i t e m r e f a c t o r

src/bin/main.rs

@@ -109,7 +109,7 @@ fn main() {
                     }).await.unwrap();
             }
 
-            entity_gateway.create_item(
+            let item0 = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Weapon(
                         item::weapon::Weapon {
@@ -125,11 +125,9 @@ fn main() {
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 0,
-                        equipped: false,
                     }
                 }).await.unwrap();
-            entity_gateway.create_item(
+            let item1 = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Weapon(
                         item::weapon::Weapon {
@@ -145,11 +143,9 @@ fn main() {
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 1,
-                        equipped: false,
                     }
                 }).await.unwrap();
-            entity_gateway.create_item(
+            let item2_w = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Weapon(
                         item::weapon::Weapon {
@@ -165,11 +161,9 @@ fn main() {
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 2,
-                        equipped: true,
                     }
                 }).await.unwrap();
-            entity_gateway.create_item(
+            let item3 = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Weapon(
                         item::weapon::Weapon {
@@ -185,11 +179,9 @@ fn main() {
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 3,
-                        equipped: false,
                     }
                 }).await.unwrap();
-            entity_gateway.create_item(
+            let item4 = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Weapon(
                         item::weapon::Weapon {
@@ -205,22 +197,18 @@ fn main() {
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 4,
-                        equipped: false,
                     }
                 }).await.unwrap();
 
-            let mag = entity_gateway.create_item(
+            let item5_m = entity_gateway.create_item(
                 item::NewItemEntity {
                     item: item::ItemDetail::Mag(item::mag::Mag::baby_mag(0)),
                     location: item::ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 5,
-                        equipped: true,
                     }
                 }).await.unwrap();
 
-            for _ in 0..10 {
+            for _ in 0..10usize {
                 let fed_tool = entity_gateway.create_item(
                     NewItemEntity {
                         item: ItemDetail::Tool (
@@ -229,15 +217,14 @@ fn main() {
                             }
                         ),
                         location: item::ItemLocation::FedToMag {
-                            mag: mag.id,
+                            mag: item5_m.id,
                         }
                     }).await.unwrap();
-                entity_gateway.feed_mag(&mag.id, &fed_tool.id).await.unwrap();
+                entity_gateway.feed_mag(&item5_m.id, &fed_tool.id).await.unwrap();
             }
-            //entity_gateway.bank(&mag.id).await;
-            entity_gateway.change_mag_owner(&mag.id, &character).await.unwrap();
+            entity_gateway.change_mag_owner(&item5_m.id, &character).await.unwrap();
 
-            entity_gateway.create_item(
+            let item6 = entity_gateway.create_item(
                 item::NewItemEntity {
                     item: ItemDetail::Tool (
                         item::tool::Tool {
@@ -246,8 +233,6 @@ fn main() {
                     ),
                     location: item::ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 6,
-                        equipped: true,
                     }
                 }).await.unwrap();
             let cell = entity_gateway.create_item(
@@ -259,7 +244,7 @@ fn main() {
                     ),
                     location: item::ItemLocation::Consumed,
                 }).await.unwrap();
-            entity_gateway.use_mag_cell(&mag.id, &cell.id).await.unwrap();
+            entity_gateway.use_mag_cell(&item5_m.id, &cell.id).await.unwrap();
 
             entity_gateway.create_item(
                 NewItemEntity {
@@ -279,8 +264,8 @@ fn main() {
                         character_id: character.id,
                         name: item::BankName("".to_string()),
                     }
-                }).await;
-            entity_gateway.create_item(
+                }).await.unwrap();
+            let item7_a = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Armor(
                         item::armor::Armor {
@@ -293,12 +278,10 @@ fn main() {
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 5,
-                        equipped: true,
                     }
                 }
-            ).await;
-            entity_gateway.create_item(
+            ).await.unwrap();
+            let item8_s = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Shield(
                         item::shield::Shield {
@@ -309,28 +292,24 @@ fn main() {
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 6,
-                        equipped: true,
                     }
                 }
-            ).await;
-            entity_gateway.create_item(
+            ).await.unwrap();
+            let item9_u0 = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Unit(
                         item::unit::Unit {
                             unit: item::unit::UnitType::PriestMind,
                             modifier: Some(item::unit::UnitModifier::Minus),
-                            armor_slot: 0,
+                            armor_slot: 0, // TODO: get rid of this
                         }
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 7,
-                        equipped: true,
                     }
                 }
-            ).await;
-            entity_gateway.create_item(
+            ).await.unwrap();
+            let item10_u1 = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Unit(
                         item::unit::Unit {
@@ -341,12 +320,10 @@ fn main() {
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 8,
-                        equipped: true,
                     }
                 }
-            ).await;
-            entity_gateway.create_item(
+            ).await.unwrap();
+            let item11_u2 = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Unit(
                         item::unit::Unit {
@@ -357,12 +334,10 @@ fn main() {
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 9,
-                        equipped: true,
                     }
                 }
-            ).await;
-            entity_gateway.create_item(
+            ).await.unwrap();
+            let item12_u3 = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Unit(
                         item::unit::Unit {
@@ -373,23 +348,31 @@ fn main() {
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 10,
-                        equipped: true,
                     }
                 }
-            ).await;
-            entity_gateway.create_item(
+            ).await.unwrap();
+            let item13 = entity_gateway.create_item(
                 NewItemEntity {
                     item: ItemDetail::Mag(
                         item::mag::Mag::baby_mag(5)
                     ),
                     location: ItemLocation::Inventory {
                         character_id: character.id,
-                        slot: 11,
-                        equipped: true,
                     }
                 }
-            ).await;
+            ).await.unwrap();
+
+            let equipped = item::EquippedEntity {
+                weapon: Some(item2_w.id),
+                armor: Some(item7_a.id),
+                shield: Some(item8_s.id),
+                unit: [Some(item9_u0.id), Some(item10_u1.id), Some(item11_u2.id), Some(item12_u3.id)],
+                mag: Some(item5_m.id),
+            };
+            entity_gateway.set_character_equips(&character.id, &equipped).await.unwrap();
+
+            let inventory = item::InventoryEntity::new(vec![item0, item1, item2_w, item3, item4, item5_m, item6, item7_a, item8_s, item9_u0, item10_u1, item11_u2, item12_u3, item13]);
+            entity_gateway.set_character_inventory(&character.id, &inventory).await.unwrap();
         }
 
         info!("[patch] starting server");

src/entity/gateway/entitygateway.rs

@@ -65,6 +65,7 @@ pub trait EntityGateway: Send + Sync + Clone {
         unimplemented!();
     }
 
+    // TODO: remove
     async fn change_item(&mut self, _id: &ItemEntityId, _item: &ItemDetail) -> Result<(), GatewayError>  {
         unimplemented!();
     }
@@ -85,7 +86,33 @@ pub trait EntityGateway: Send + Sync + Clone {
         unimplemented!();
     }
 
+    /*
     async fn get_items_by_character(&self, _char_id: &CharacterEntityId) -> Result<Vec<ItemEntity>, GatewayError> {
         unimplemented!();
     }
+     */
+
+    async fn get_character_inventory(&mut self, _char_id: &CharacterEntityId) -> Result<InventoryEntity, GatewayError> {
+        unimplemented!();
+    }
+
+    async fn get_character_bank(&mut self, _char_id: &CharacterEntityId, _bank_name: BankName) -> Result<BankEntity, GatewayError> {
+        unimplemented!();
+    }
+
+    async fn set_character_inventory(&mut self, _char_id: &CharacterEntityId, _inventory: &InventoryEntity) -> Result<(), GatewayError> {
+        unimplemented!();
+    }
+
+    async fn set_character_bank(&mut self, _char_id: &CharacterEntityId, _inventory: &BankEntity, _bank_name: BankName) -> Result<(), GatewayError> {
+        unimplemented!();
+    }
+
+    async fn get_character_equips(&mut self, _char_id: &CharacterEntityId) -> Result<EquippedEntity, GatewayError> {
+        unimplemented!();
+    }
+
+    async fn set_character_equips(&mut self, _char_id: &CharacterEntityId, _equips: &EquippedEntity) -> Result<(), GatewayError> {
+        unimplemented!();
+    }
 }

src/entity/gateway/inmemory.rs

@@ -14,6 +14,9 @@ pub struct InMemoryGateway {
     user_settings: Arc<Mutex<BTreeMap<UserSettingsId, UserSettingsEntity>>>,
     characters: Arc<Mutex<BTreeMap<CharacterEntityId, CharacterEntity>>>,
     items: Arc<Mutex<BTreeMap<ItemEntityId, ItemEntity>>>,
+    inventories: Arc<Mutex<BTreeMap<CharacterEntityId, InventoryEntity>>>,
+    banks: Arc<Mutex<BTreeMap<CharacterEntityId, BankEntity>>>,
+    equips: Arc<Mutex<BTreeMap<CharacterEntityId, EquippedEntity>>>,
     mag_modifiers: Arc<Mutex<BTreeMap<ItemEntityId, Vec<mag::MagModifier>>>>,
 }
 
@@ -24,11 +27,66 @@ impl InMemoryGateway {
             user_settings: Arc::new(Mutex::new(BTreeMap::new())),
             characters: Arc::new(Mutex::new(BTreeMap::new())),
             items: Arc::new(Mutex::new(BTreeMap::new())),
+            inventories: Arc::new(Mutex::new(BTreeMap::new())),
+            banks: Arc::new(Mutex::new(BTreeMap::new())),
+            equips: Arc::new(Mutex::new(BTreeMap::new())),
             mag_modifiers: Arc::new(Mutex::new(BTreeMap::new())),
         }
     }
 }
 
+impl InMemoryGateway {
+    fn apply_modifiers(&self, inventory: InventoryEntity ) -> InventoryEntity {
+        let items = self.items.lock().unwrap();
+        let inventory_items = inventory.items.into_iter()
+            .map(|item| {
+                item.map_individual(|mut item| {
+                    item.item = match item.item {
+                        ItemDetail::Mag(mag) => {
+                            let mut mag = mag::Mag::baby_mag(mag.color as u16);
+                            println!("mag! {:?}", mag);
+                            if let Some(mag_modifiers) = self.mag_modifiers.lock().unwrap().get(&item.id) {
+                                for mag_modifier in mag_modifiers.iter() {
+                                    match mag_modifier {
+                                        mag::MagModifier::FeedMag {food} => {
+                                            items.get(&food).map(|mag_feed| {
+                                                match mag_feed.item {
+                                                    ItemDetail::Tool(mag_feed) => mag.feed(mag_feed.tool),
+                                                    _ => {}
+                                                }
+                                            });
+                                        },
+                                        mag::MagModifier::OwnerChange(class, section_id) => {
+                                            mag.change_owner(*class, *section_id)
+                                        },
+                                        mag::MagModifier::MagCell(mag_cell_id) => {
+                                            items.get(&mag_cell_id).map(|mag_cell| {
+                                                match mag_cell.item {
+                                                    ItemDetail::Tool(mag_cell) => mag.apply_mag_cell(mag_cell.tool.try_into().unwrap()),
+                                                    _ => {}
+                                                }
+                                            });
+                                        },
+                                        _ => {}
+                                    }
+                                    println!("{:?} -> {:?}", mag_modifier, mag);
+                                }
+                            }
+                            ItemDetail::Mag(mag)
+                        }
+                        _ => {
+                            item.item
+                        }
+                    };
+
+                    item
+                })
+            })
+            .collect();
+        InventoryEntity::new(inventory_items)
+    }
+}
+
 #[async_trait::async_trait]
 impl EntityGateway for InMemoryGateway {
     async fn create_user(&mut self, user: NewUserAccountEntity) -> Result<UserAccountEntity, GatewayError> {
@@ -208,55 +266,51 @@ impl EntityGateway for InMemoryGateway {
         Ok(())
     }
 
-    async fn get_items_by_character(&self, char_id: &CharacterEntityId) -> Result<Vec<ItemEntity>, GatewayError> {
-        let items = self.items.lock().unwrap();
-        Ok(items
+    async fn get_character_inventory(&mut self, char_id: &CharacterEntityId) -> Result<InventoryEntity, GatewayError> {
+        println!("getting inv");
+        let inventories = self.inventories.lock().unwrap();
+        Ok(inventories
+           .iter()
+           .find(|(id, _)| **id == *char_id)
+           .map(|(_, inv)| inv.clone())
+           .map(|inv| self.apply_modifiers(inv))
+           .unwrap_or(InventoryEntity::default()))
+    }
+
+    async fn get_character_bank(&mut self, char_id: &CharacterEntityId, _bank_name: BankName) -> Result<BankEntity, GatewayError> {
+        let banks = self.banks.lock().unwrap();
+        Ok(banks
+           .iter()
+           .find(|(id, _)| **id == *char_id)
+           .map(|(_, b)| b.clone())
+           .unwrap_or(BankEntity::default()))
+    }
+
+    async fn set_character_inventory(&mut self, char_id: &CharacterEntityId, inventory: &InventoryEntity) -> Result<(), GatewayError> {
+        let mut inventories = self.inventories.lock().unwrap();
+        inventories.insert(*char_id, inventory.clone());
+        Ok(())
+    }
+
+    // TOOD: impl bank name
+    async fn set_character_bank(&mut self, char_id: &CharacterEntityId, bank: &BankEntity, _bank_name: BankName) -> Result<(), GatewayError> {
+        let mut banks = self.banks.lock().unwrap();
+        banks.insert(*char_id, bank.clone());
+        Ok(())
+    }
+
+    async fn get_character_equips(&mut self, char_id: &CharacterEntityId) -> Result<EquippedEntity, GatewayError> {
+        let equips = self.equips.lock().unwrap();
+        Ok(equips
             .iter()
-            .filter(|(_, k)| {
-                match k.location {
-                    ItemLocation::Inventory{character_id, ..} => character_id == *char_id,
-                    ItemLocation::Bank{character_id, ..} => character_id == *char_id,
-                    _ => false
-                }
-            })
-            .map(|(_, k)| {
-                k.clone()
-            })
-            .map(|mut item| {
-                item.item = match item.item {
-                    ItemDetail::Mag(mut mag) => {
-                        self.mag_modifiers.lock().unwrap().get(&item.id).map(|mag_modifiers| {
-                            for mag_modifier in mag_modifiers.iter() {
-                                match mag_modifier {
-                                    mag::MagModifier::FeedMag {food} => {
-                                        items.get(&food).map(|mag_feed| {
-                                            match mag_feed.item {
-                                                ItemDetail::Tool(mag_feed) => mag.feed(mag_feed.tool),
-                                                _ => {}
-                                            }
-                                        });
-                                    },
-                                    mag::MagModifier::OwnerChange(class, section_id) => {
-                                        mag.change_owner(*class, *section_id)
-                                    },
-                                    mag::MagModifier::MagCell(mag_cell_id) => {
-                                        items.get(&mag_cell_id).map(|mag_cell| {
-                                            match mag_cell.item {
-                                                ItemDetail::Tool(mag_cell) => mag.apply_mag_cell(mag_cell.tool.try_into().unwrap()),
-                                                _ => {}
-                                            }
-                                        });
-                                    },
-                                    _ => {}
-                                }
-                            }
-                        });
-                        ItemDetail::Mag(mag)
-                    }
-                    _ => item.item
-                };
-                item
-            })
-            .collect())
+            .find(|(id, _)| **id == *char_id)
+            .map(|(_, inv)| inv.clone())
+            .unwrap_or(EquippedEntity::default()))
+    }
+
+    async fn set_character_equips(&mut self, char_id: &CharacterEntityId, equipped: &EquippedEntity) -> Result<(), GatewayError> {
+        let mut equips = self.equips.lock().unwrap();
+        equips.insert(*char_id, equipped.clone());
+        Ok(())
     }
 }

src/entity/gateway/postgres/models.rs

@@ -383,7 +383,7 @@ impl Into<shield::Shield> for PgShield {
 pub struct PgUnit {
     unit: unit::UnitType,
     modifier: Option<unit::UnitModifier>,
-    armor_slot: u8,
+    //armor_slot: u8,
 }
 
 impl From<unit::Unit> for PgUnit {
@@ -391,7 +391,7 @@ impl From<unit::Unit> for PgUnit {
         PgUnit {
             unit: other.unit,
             modifier: other.modifier,
-            armor_slot: other.armor_slot,
+            //armor_slot: other.armor_slot,
         }
     }
 }
@@ -401,7 +401,7 @@ impl Into<unit::Unit> for PgUnit {
         unit::Unit {
             unit: self.unit,
             modifier: self.modifier,
-            armor_slot: self.armor_slot,
+            armor_slot: 0,
         }
     }
 }
@@ -573,9 +573,9 @@ pub struct PgItem {
 pub enum PgItemLocationDetail {
     Inventory {
         character_id: u32,
-        #[serde(skip_serializing)]
-        slot: usize,
-        equipped: bool,
+        //#[serde(skip_serializing)]
+        //slot: usize,
+        //equipped: bool,
     },
     Bank {
         character_id: u32,
@@ -604,7 +604,7 @@ pub enum PgItemLocationDetail {
 impl From<ItemLocation> for PgItemLocationDetail {
     fn from(other: ItemLocation) -> PgItemLocationDetail {
         match other {
-            ItemLocation::Inventory{character_id, slot, equipped} => PgItemLocationDetail::Inventory{character_id: character_id.0, slot, equipped},
+            ItemLocation::Inventory{character_id} => PgItemLocationDetail::Inventory{character_id: character_id.0},
             ItemLocation::Bank{character_id, name} => PgItemLocationDetail::Bank{character_id: character_id.0, name: name.0},
             ItemLocation::LocalFloor{character_id, map_area, x,y,z} => PgItemLocationDetail::LocalFloor{character_id: character_id.0, map_area, x,y,z},
             ItemLocation::SharedFloor{map_area, x,y,z} => PgItemLocationDetail::SharedFloor{map_area, x,y,z},
@@ -618,7 +618,7 @@ impl From<ItemLocation> for PgItemLocationDetail {
 impl Into<ItemLocation> for PgItemLocationDetail {
     fn into(self) -> ItemLocation {
         match self {
-            PgItemLocationDetail::Inventory{character_id, slot, equipped} => ItemLocation::Inventory{character_id: CharacterEntityId(character_id), slot, equipped},
+            PgItemLocationDetail::Inventory{character_id} => ItemLocation::Inventory{character_id: CharacterEntityId(character_id)},
             PgItemLocationDetail::Bank{character_id, name} => ItemLocation::Bank{character_id: CharacterEntityId(character_id), name: BankName(name)},
             PgItemLocationDetail::LocalFloor{character_id, map_area, x,y,z} => ItemLocation::LocalFloor{character_id: CharacterEntityId(character_id), map_area, x,y,z},
             PgItemLocationDetail::SharedFloor{map_area, x,y,z} => ItemLocation::SharedFloor{map_area, x,y,z},

src/entity/gateway/postgres/postgres.rs

@@ -272,6 +272,8 @@ impl EntityGateway for PostgresGateway {
     }
 
     async fn create_item(&mut self, item: NewItemEntity) -> Result<ItemEntity, GatewayError> {
+        unimplemented!();
+        /*
         let mut tx = self.pool.begin().await?;
         let new_item = sqlx::query_as::<_, PgItem>("insert into item (item) values ($1) returning *;")
             .bind(sqlx::types::Json(PgItemDetail::from(item.item)))
@@ -310,6 +312,7 @@ impl EntityGateway for PostgresGateway {
             item: new_item.item.0.into(),
             location: location.location.0.into(),
         })
+        */
     }
 
     async fn change_item(&mut self, id: &ItemEntityId, item: &ItemDetail) -> Result<(), GatewayError>  {
@@ -321,6 +324,8 @@ impl EntityGateway for PostgresGateway {
     }
 
     async fn change_item_location(&mut self, item_id: &ItemEntityId, item_location: ItemLocation) -> Result<(), GatewayError> {
+        unimplemented!();
+        /*
         let mut tx = self.pool.begin().await?;
         if let ItemLocation::Inventory{slot, ..} = &item_location {
             sqlx::query("delete from inventory_slot where item = $1")
@@ -346,6 +351,7 @@ impl EntityGateway for PostgresGateway {
         }
         tx.commit().await?;
         Ok(())
+        */
     }
 
     async fn feed_mag(&mut self, mag_item_id: &ItemEntityId, tool_item_id: &ItemEntityId) -> Result<(), GatewayError> {
@@ -371,7 +377,7 @@ impl EntityGateway for PostgresGateway {
             .execute(&self.pool).await?;
         Ok(())
     }
-
+/*
     async fn get_items_by_character(&self, char_id: &CharacterEntityId) -> Result<Vec<ItemEntity>, GatewayError> {
         let q = r#"select * from (
                       select distinct on (item_location.item)
@@ -410,4 +416,28 @@ impl EntityGateway for PostgresGateway {
                     .await
         ).await)
     }
+*/
+    async fn get_character_inventory(&mut self, _char_id: &CharacterEntityId) -> Result<InventoryEntity, GatewayError> {
+        unimplemented!();
+    }
+
+    async fn get_character_bank(&mut self, _char_id: &CharacterEntityId, _bank_name: BankName) -> Result<BankEntity, GatewayError> {
+        unimplemented!();
+    }
+
+    async fn set_character_inventory(&mut self, _char_id: &CharacterEntityId, _inventory: &InventoryEntity) -> Result<(), GatewayError> {
+        unimplemented!();
+    }
+
+    async fn set_character_bank(&mut self, _char_id: &CharacterEntityId, _inventory: &BankEntity, _bank_name: BankName) -> Result<(), GatewayError> {
+        unimplemented!();
+    }
+
+    async fn get_character_equips(&mut self, _char_id: &CharacterEntityId) -> Result<EquippedEntity, GatewayError> {
+        unimplemented!();
+    }
+
+    async fn set_character_equips(&mut self, _char_id: &CharacterEntityId, _equips: &EquippedEntity) -> Result<(), GatewayError> {
+        unimplemented!();
+    }
 }

src/entity/item/mod.rs

@@ -24,8 +24,6 @@ pub struct BankName(pub String);
 pub enum ItemLocation {
     Inventory {
         character_id: CharacterEntityId,
-        slot: usize,
-        equipped: bool,
     },
     Bank {
         character_id: CharacterEntityId,
@@ -154,6 +152,13 @@ impl ItemDetail {
             ItemDetail::ESWeapon(e) => e.as_bytes(),
         }
     }
+
+    pub fn as_tool(self) -> Option<tool::Tool> {
+        match self {
+            ItemDetail::Tool(tool) => Some(tool),
+            _ => None,
+        }
+    }
 }
 
 #[derive(Clone, Debug)]
@@ -168,3 +173,131 @@ pub struct ItemEntity {
     pub location: ItemLocation,
     pub item: ItemDetail,
 }
+
+
+#[derive(Clone, Debug)]
+pub enum InventoryItemEntity {
+    Individual(ItemEntity),
+    Stacked(Vec<ItemEntity>),
+}
+
+impl std::convert::From<ItemEntity> for InventoryItemEntity {
+    fn from(item: ItemEntity) -> InventoryItemEntity {
+        InventoryItemEntity::Individual(item)
+    }
+}
+
+impl std::convert::From<Vec<ItemEntity>> for InventoryItemEntity {
+    fn from(items: Vec<ItemEntity>) -> InventoryItemEntity {
+        InventoryItemEntity::Stacked(items)
+    }
+}
+
+impl InventoryItemEntity {
+    pub fn map_individual<F: Fn(ItemEntity) -> ItemEntity>(self, func: F) -> InventoryItemEntity {
+        match self {
+            InventoryItemEntity::Individual(item) => InventoryItemEntity::Individual(func(item)),
+            _ => self,
+        }
+    }
+    //pub fn with_individual<T>(&self, func: fn(&ItemEntity) -> T) -> Option<T> {
+    pub fn with_individual<F: Fn(&ItemEntity) -> T, T>(&self, func: F) -> Option<T> {
+        match self {
+            InventoryItemEntity::Individual(item) => Some(func(item)),
+            _ => None,
+        }
+    }
+
+    //pub fn with_stacked<T>(&self, func: fn(&Vec<ItemEntity>) -> T) -> Option<T> {
+    pub fn with_stacked<F: Fn(&Vec<ItemEntity>) -> T, T>(&self, func: F) -> Option<T> {
+        match self {
+            InventoryItemEntity::Stacked(items) => Some(func(items)),
+            _ => None,
+        }
+    }
+}
+
+#[derive(Clone, Debug, Default)]
+pub struct EquippedEntity {
+    pub weapon: Option<ItemEntityId>,
+    pub armor: Option<ItemEntityId>,
+    pub shield: Option<ItemEntityId>,
+    pub unit: [Option<ItemEntityId>; 4],
+    pub mag: Option<ItemEntityId>,
+}
+
+impl EquippedEntity {
+    pub fn is_equipped(&self, item: &ItemEntityId) -> bool {
+        self.weapon == Some(*item)
+            || self.armor == Some(*item)
+            || self.shield == Some(*item)
+            || self.unit[0] == Some(*item)
+            || self.unit[1] == Some(*item)
+            || self.unit[2] == Some(*item)
+            || self.unit[3] == Some(*item)
+            || self.mag == Some(*item)
+    }
+}
+
+#[derive(Clone, Debug, Default)]
+pub struct InventoryEntity {
+    pub items: Vec<InventoryItemEntity>,
+}
+
+impl InventoryEntity {
+    pub fn new<T: Into<InventoryItemEntity>>(items: Vec<T>) -> InventoryEntity {
+        InventoryEntity {
+            items: items.into_iter().map(|i| i.into()).collect(),
+        }
+    }
+}
+
+
+#[derive(Clone, Debug)]
+pub enum BankItemEntity {
+    Individual(ItemEntity),
+    Stacked(Vec<ItemEntity>),
+}
+
+impl std::convert::From<ItemEntity> for BankItemEntity {
+    fn from(item: ItemEntity) -> BankItemEntity {
+        BankItemEntity::Individual(item)
+    }
+}
+
+impl std::convert::From<Vec<ItemEntity>> for BankItemEntity {
+    fn from(items: Vec<ItemEntity>) -> BankItemEntity {
+        BankItemEntity::Stacked(items)
+    }
+}
+
+impl BankItemEntity {
+    pub fn with_individual<T>(&self, func: fn(&ItemEntity) -> T) -> Option<T> {
+        match self {
+            BankItemEntity::Individual(item) => Some(func(item)),
+            _ => None,
+        }
+    }
+
+    pub fn with_stacked<T>(&self, func: fn(&Vec<ItemEntity>) -> T) -> Option<T> {
+        match self {
+            BankItemEntity::Stacked(items) => Some(func(items)),
+            _ => None,
+        }
+    }
+}
+
+
+#[derive(Clone, Debug, Default)]
+pub struct BankEntity {
+    //pub items: [Option<CharacterBankItem>; 30],
+    pub items: Vec<BankItemEntity>,
+}
+
+impl BankEntity {
+    pub fn new<T: Into<BankItemEntity>>(items: Vec<T>) -> BankEntity {
+        BankEntity {
+            items: items.into_iter().map(|i| i.into()).collect(),
+        }
+    }
+}

src/login/character.rs

@@ -19,7 +19,7 @@ use libpso::{utf8_to_array, utf8_to_utf16_array};
 
 use crate::entity::gateway::EntityGateway;
 use crate::entity::account::{UserAccountEntity, NewUserSettingsEntity, USERFLAG_NEWCHAR, USERFLAG_DRESSINGROOM};
-use crate::entity::item::{NewItemEntity, ItemDetail, ItemLocation};
+use crate::entity::item::{NewItemEntity, ItemDetail, ItemLocation, InventoryItemEntity, InventoryEntity, BankEntity, BankName, EquippedEntity};
 use crate::entity::item::weapon::Weapon;
 use crate::entity::item::armor::Armor;
 use crate::entity::item::tech::Technique;
@@ -198,7 +198,7 @@ async fn new_character<EG: EntityGateway>(entity_gateway: &mut EG, user: &UserAc
     };
 
 
-    entity_gateway.create_item(
+    let weapon = entity_gateway.create_item(
         NewItemEntity {
             item : ItemDetail::Weapon(
                 Weapon {
@@ -211,11 +211,9 @@ async fn new_character<EG: EntityGateway>(entity_gateway: &mut EG, user: &UserAc
             }),
             location: ItemLocation::Inventory {
                 character_id: character.id,
-                slot: 0,
-                equipped: true,
             }}).await.unwrap();
 
-    entity_gateway.create_item(
+    let armor = entity_gateway.create_item(
         NewItemEntity {
             item: ItemDetail::Armor (
                 Armor {
@@ -227,23 +225,20 @@ async fn new_character<EG: EntityGateway>(entity_gateway: &mut EG, user: &UserAc
                 }),
             location: ItemLocation::Inventory {
                 character_id: character.id,
-                slot: 1,
-            equipped: true,
             }}).await.unwrap();
 
     let mut mag = Mag::baby_mag(character.appearance.skin);
     mag.change_owner(character.char_class, character.section_id);
-    entity_gateway.create_item(
+    let mag = entity_gateway.create_item(
         NewItemEntity {
             item: ItemDetail::Mag(mag),
             location: ItemLocation::Inventory {
                 character_id: character.id,
-                slot: 2,
-                equipped: true,
             }}).await.unwrap();
 
-    for _ in 0..4 {
-        entity_gateway.create_item(
+    let mut monomates = Vec::new();
+    for _ in 0..4usize {
+        monomates.push(entity_gateway.create_item(
             NewItemEntity {
                 item: ItemDetail::Tool (
                     Tool {
@@ -251,10 +246,12 @@ async fn new_character<EG: EntityGateway>(entity_gateway: &mut EG, user: &UserAc
                     }),
                 location: ItemLocation::Inventory {
                     character_id: character.id,
-                    slot: 3,
-                    equipped: false,
-                }}).await.unwrap();
-        entity_gateway.create_item(
+                }}).await.unwrap())
+    }
+
+    let mut monofluids = Vec::new();
+    for _ in 0..4usize {
+        monofluids.push(entity_gateway.create_item(
             NewItemEntity {
                 item: ItemDetail::Tool (
                     Tool {
@@ -262,10 +259,20 @@ async fn new_character<EG: EntityGateway>(entity_gateway: &mut EG, user: &UserAc
                     }),
                 location: ItemLocation::Inventory {
                     character_id: character.id,
-                    slot: 4,
-                    equipped: false,
-                }}).await.unwrap();
+                }}).await.unwrap())
     }
+
+    let inventory = InventoryEntity {
+        items: vec![InventoryItemEntity::Individual(weapon.clone()), InventoryItemEntity::Individual(armor.clone()), InventoryItemEntity::Individual(mag.clone()),
+                    InventoryItemEntity::Stacked(monomates), InventoryItemEntity::Stacked(monofluids)],
+    };
+    entity_gateway.set_character_inventory(&character.id, &inventory);
+    entity_gateway.set_character_bank(&character.id, &BankEntity::default(), BankName("".into()));
+    let mut equipped = EquippedEntity::default();
+    equipped.weapon = Some(weapon.id);
+    equipped.armor = Some(armor.id);
+    equipped.mag = Some(mag.id);
+    entity_gateway.set_character_equips(&character.id, &equipped);
 }
 
 

src/ship/items/bank.rs

@@ -1,6 +1,7 @@
 use crate::ship::items::ClientItemId;
 use libpso::character::character;//::InventoryItem;
-use crate::entity::item::{ItemEntityId, ItemDetail};
+use crate::entity::item::{ItemEntityId, ItemEntity, ItemDetail, ItemLocation, BankEntity, BankItemEntity, BankName};
+use crate::entity::character::CharacterEntityId;
 use crate::entity::item::tool::Tool;
 use crate::ship::items::inventory::{InventoryItemHandle, InventoryItem};
 
@@ -292,6 +293,41 @@ impl CharacterBank {
 
         self.items.last()
     }
+
+    pub fn as_bank_entity(&self, character_id: &CharacterEntityId, bank_name: &BankName) -> BankEntity {
+        BankEntity {
+            items: self.items.iter()
+                .map(|item| {
+                    match item {
+                        BankItem::Individual(item) => {
+                            BankItemEntity::Individual(ItemEntity {
+                                id: item.entity_id,
+                                location: ItemLocation::Bank {
+                                    character_id: *character_id,
+                                    name: bank_name.clone(),
+                                },
+                                item: item.item.clone(),
+                            })
+                        },
+                        BankItem::Stacked(items) => {
+                            BankItemEntity::Stacked(items.entity_ids.iter()
+                                                         .map(|id| {
+                                                             ItemEntity {
+                                                                 id: *id,
+                                                                 location: ItemLocation::Bank {
+                                                                     character_id: *character_id,
+                                                                     name: bank_name.clone(),
+                                                                 },
+                                                                 item: ItemDetail::Tool(items.tool)
+                                                             }
+                                                         })
+                                                         .collect())
+                        },
+                    }
+                })
+                .collect()
+        }
+    }
 }
 
 

src/ship/items/inventory.rs

@@ -1,7 +1,8 @@
 use std::cmp::Ordering;
 use thiserror::Error;
 use libpso::character::character;//::InventoryItem;
-use crate::entity::item::{ItemEntityId, ItemDetail, ItemType};
+use crate::entity::character::CharacterEntityId;
+use crate::entity::item::{ItemEntityId, ItemDetail, ItemEntity, ItemType, ItemLocation, InventoryEntity, InventoryItemEntity, EquippedEntity};
 use crate::entity::item::tool::Tool;
 use crate::entity::item::mag::Mag;
 use crate::ship::items::{ClientItemId, BankItem, BankItemHandle};
@@ -217,6 +218,8 @@ impl InventoryItem {
 }
 
 
+
+
 #[derive(Error, Debug, Clone)]
 #[error("")]
 pub enum InventoryItemConsumeError {
@@ -572,7 +575,7 @@ impl CharacterInventory {
                     item: individual_bank_item.item.clone(),
                     equipped: false,
                 }));
-                (true, self.count())
+                (true, self.count()-1)
             },
             BankItem::Stacked(stacked_bank_item) => {
                 let existing_inventory_item = self.items.iter_mut()
@@ -608,7 +611,7 @@ impl CharacterInventory {
                             item_id: ClientItemId(self.item_id_counter),
                             tool: stacked_bank_item.tool,
                         }));
-                        self.count()
+                        self.count()-1
                     }
                 };
                 (stacked_bank_item.count() == 0, slot)
@@ -635,5 +638,60 @@ impl CharacterInventory {
     pub fn set_items(&mut self, sorted_items: Vec<InventoryItem>) {
         self.items = sorted_items;
     }
+
+    pub fn as_inventory_entity(&self, character_id: &CharacterEntityId) -> InventoryEntity {
+        InventoryEntity {
+            items: self.items.iter()
+                .map(|item| {
+                    match item {
+                        InventoryItem::Individual(item) => {
+                            InventoryItemEntity::Individual(ItemEntity {
+                                id: item.entity_id,
+                                location: ItemLocation::Inventory {
+                                    character_id: *character_id,
+                                },
+                                item: item.item.clone(),
+                            })
+                        },
+                        InventoryItem::Stacked(items) => {
+                            InventoryItemEntity::Stacked(items.entity_ids.iter()
+                                                         .map(|id| {
+                                                             ItemEntity {
+                                                                 id: *id,
+                                                                 location: ItemLocation::Inventory {
+                                                                     character_id: *character_id,
+                                                                 },
+                                                                 item: ItemDetail::Tool(items.tool)
+                                                             }
+                                                         })
+                                                         .collect())
+                        },
+                    }
+                })
+                .collect()
+        }
+    }
+
+    pub fn as_equipped_entity(&self) -> EquippedEntity {
+        self.items.iter()
+            .fold((EquippedEntity::default(), 0), |(mut equipped, mut unit_slot), item| {
+                if let InventoryItem::Individual(individual_item) = item {
+                    if individual_item.equipped {
+                        match individual_item.item {
+                            ItemDetail::Weapon(_) => equipped.weapon = Some(individual_item.entity_id),
+                            ItemDetail::Armor(_) => equipped.armor = Some(individual_item.entity_id),
+                            ItemDetail::Shield(_) => equipped.shield = Some(individual_item.entity_id),
+                            ItemDetail::Unit(_) => {
+                                equipped.unit[unit_slot] = Some(individual_item.entity_id);
+                                unit_slot += 1;
+                            }
+                            ItemDetail::Mag(_) => equipped.mag = Some(individual_item.entity_id),
+                            _ => {},
+                        }
+                    }
+                }
+                (equipped, unit_slot)
+            }).0
+    }
 }
 

src/ship/items/manager.rs

@@ -4,7 +4,7 @@ use thiserror::Error;
 use crate::entity::gateway::EntityGateway;
 use crate::entity::character::{CharacterEntity, CharacterEntityId};
 use crate::entity::item::{ItemDetail, ItemLocation, BankName};
-use crate::entity::item::{Meseta, NewItemEntity, ItemEntity};
+use crate::entity::item::{Meseta, NewItemEntity, ItemEntity, InventoryItemEntity, EquippedEntity, InventoryEntity, BankItemEntity, BankEntity};
 use crate::entity::item::tool::{Tool, ToolType};
 use crate::entity::item::unit;
 use crate::ship::map::MapArea;
@@ -48,40 +48,10 @@ pub enum ItemManagerError {
     CannotGetIndividualItem,
     InvalidSlot(u8, u8), // slots available, slot attempted
     NoArmorEquipped,
-    GatewayError(#[from] crate::entity::gateway::GatewayError)
+    GatewayError(#[from] crate::entity::gateway::GatewayError),
+    StackedItemError(Vec<ItemEntity>),
 }
 
-
-async fn update_inventory_slots<EG: EntityGateway>(entity_gateway: &mut EG, character: &CharacterEntity, inventory: &CharacterInventory) -> Result<(), ItemManagerError> {
-    for (slot, item) in inventory.iter().enumerate() {
-        match item {
-            InventoryItem::Individual(individual_inventory_item) => {
-                entity_gateway.change_item_location(
-                    &individual_inventory_item.entity_id,
-                    ItemLocation::Inventory {
-                        character_id: character.id,
-                        slot: slot,
-                        equipped: individual_inventory_item.equipped,
-                    }
-                ).await?
-            },
-            InventoryItem::Stacked(stacked_inventory_item) => {
-                for entity_id in stacked_inventory_item.entity_ids.iter() {
-                    entity_gateway.change_item_location(
-                        entity_id,
-                        ItemLocation::Inventory {
-                            character_id: character.id,
-                            slot: slot,
-                            equipped: false,
-                        }).await?
-                }
-            }
-        }
-    }
-    Ok(())
-}
-
-
 pub struct ItemManager {
     id_counter: u32,
 
@@ -115,6 +85,70 @@ impl ItemManager {
 
     // TODO: Result
     pub async fn load_character<EG: EntityGateway>(&mut self, entity_gateway: &mut EG, character: &CharacterEntity) -> Result<(), ItemManagerError> {
+        let inventory = entity_gateway.get_character_inventory(&character.id).await?;
+        let bank = entity_gateway.get_character_bank(&character.id, BankName("".into())).await?;
+        let equipped = entity_gateway.get_character_equips(&character.id).await?;
+
+        let inventory_items = inventory.items.into_iter()
+            .map(|item| -> Result<InventoryItem, ItemManagerError> {
+                Ok(match item {
+                    InventoryItemEntity::Individual(item) => {
+                        InventoryItem::Individual(IndividualInventoryItem {
+                            entity_id: item.id,
+                            item_id: self.next_global_item_id(),
+                            item: item.item,
+                            equipped: equipped.is_equipped(&item.id),
+                        })
+                    },
+                    InventoryItemEntity::Stacked(items) => {
+                        InventoryItem::Stacked(StackedInventoryItem {
+                            entity_ids: items.iter().map(|i| i.id).collect(),
+                            item_id: self.next_global_item_id(),
+                            tool: items.get(0)
+                                .ok_or(ItemManagerError::StackedItemError(items.clone()))?
+                                .item
+                                .clone()
+                                .as_tool()
+                                .ok_or(ItemManagerError::StackedItemError(items.clone()))?
+                        })
+                    },
+                })
+            })
+            .collect::<Result<Vec<_>, _>>()?;
+        let character_inventory = CharacterInventory::new(inventory_items);
+
+        let bank_items = bank.items.into_iter()
+            .map(|item| -> Result<BankItem, ItemManagerError> {
+                Ok(match item {
+                    BankItemEntity::Individual(item) => {
+                        BankItem::Individual(IndividualBankItem {
+                            entity_id: item.id,
+                            item_id: self.next_global_item_id(),
+                            item: item.item,
+                        })
+                    },
+                    BankItemEntity::Stacked(items) => {
+                        BankItem::Stacked(StackedBankItem {
+                            entity_ids: items.iter().map(|i| i.id).collect(),
+                            item_id: self.next_global_item_id(),
+                            tool: items.get(0)
+                                .ok_or(ItemManagerError::StackedItemError(items.clone()))?
+                                .item
+                                .clone()
+                                .as_tool()
+                                .ok_or(ItemManagerError::StackedItemError(items.clone()))?
+                        })
+                    },
+                })
+            })
+            .collect::<Result<Vec<_>, _>>()?;
+        let character_bank = CharacterBank::new(bank_items);
+
+        self.character_inventory.insert(character.id, character_inventory);
+        self.character_bank.insert(character.id, character_bank);
+        Ok(())
+
+        /*
         let items = entity_gateway.get_items_by_character(&character.id).await?;
         let inventory_items = items.clone().into_iter()
             .filter_map(|item| {
@@ -208,6 +242,7 @@ impl ItemManager {
         self.character_inventory.insert(character.id, inventory);
         self.character_bank.insert(character.id, bank_items.remove(&BankName("".to_string())).unwrap_or(CharacterBank::new(Vec::new())));
         Ok(())
+        */
     }
 
     pub fn add_character_to_room(&mut self, room_id: RoomId, character: &CharacterEntity, area_client: AreaClient) {
@@ -301,8 +336,6 @@ impl ItemManager {
                             &new_inventory_item.entity_id,
                             ItemLocation::Inventory {
                                 character_id: character.id,
-                                slot: slot.0,
-                                equipped: false,
                             }
                         ).await?;
                         if let Some(_) = new_inventory_item.mag() {
@@ -325,8 +358,6 @@ impl ItemManager {
                                 &entity_id,
                                 ItemLocation::Inventory {
                                     character_id: character.id,
-                                    slot: slot.0,
-                                    equipped: false,
                                 }
                             ).await?;
                         }
@@ -356,6 +387,7 @@ impl ItemManager {
             }
         };
 
+        entity_gateway.set_character_inventory(&character.id, &inventory.as_inventory_entity(&character.id)).await?;
         floor_item.remove_from_floor();
         Ok(trigger_create_item)
     }
@@ -487,7 +519,7 @@ impl ItemManager {
             },
         }
 
-        update_inventory_slots(entity_gateway, character, &inventory).await?;
+        entity_gateway.set_character_inventory(&character.id, &inventory.as_inventory_entity(&character.id)).await?;
         Ok(())
     }
 
@@ -549,6 +581,7 @@ impl ItemManager {
             ).await?;
         }
 
+        entity_gateway.set_character_inventory(&character.id, &inventory.as_inventory_entity(&character.id)).await?;
         Ok(stacked_floor_item)
     }
 
@@ -567,7 +600,7 @@ impl ItemManager {
                                                 ItemLocation::Consumed).await?;
         }
 
-        update_inventory_slots(entity_gateway, character, &inventory).await?;
+        entity_gateway.set_character_inventory(&character.id, &inventory.as_inventory_entity(&character.id)).await?;
         Ok(consumed_item)
     }
 
@@ -604,7 +637,8 @@ impl ItemManager {
             }
         }
 
-        update_inventory_slots(entity_gateway, character, &inventory).await?;
+        entity_gateway.set_character_inventory(&character.id, &inventory.as_inventory_entity(&character.id)).await?;
+        entity_gateway.set_character_bank(&character.id, &bank.as_bank_entity(&character.id, &BankName("".into())), BankName("".into())).await?;
         Ok(())
     }
 
@@ -621,30 +655,31 @@ impl ItemManager {
             .ok_or(ItemManagerError::NoCharacter(character.id))?;
 
         let item_to_withdraw = bank.get_item_handle_by_id(item_id).ok_or(ItemManagerError::NoSuchItemId(item_id))?;
-        let inventory_item = inventory.withdraw_item(item_to_withdraw, amount).ok_or(ItemManagerError::Idunnoman)?;
+        let inventory_item_slot = {
+            let inventory_item = inventory.withdraw_item(item_to_withdraw, amount).ok_or(ItemManagerError::Idunnoman)?;
 
-        match inventory_item {
-            (InventoryItem::Individual(individual_inventory_item), slot) => {
-                entity_gateway.change_item_location(&individual_inventory_item.entity_id,
-                                                    ItemLocation::Inventory {
-                                                        character_id: character.id,
-                                                        slot: slot,
-                                                        equipped: false,
-                                                    }).await?;
-            },
-            (InventoryItem::Stacked(stacked_inventory_item), slot) => {
-                for entity_id in &stacked_inventory_item.entity_ids {
-                    entity_gateway.change_item_location(entity_id,
+            match inventory_item {
+                (InventoryItem::Individual(individual_inventory_item), slot) => {
+                    entity_gateway.change_item_location(&individual_inventory_item.entity_id,
                                                         ItemLocation::Inventory {
                                                             character_id: character.id,
-                                                            slot: slot,
-                                                            equipped: false,
                                                         }).await?;
+                },
+                (InventoryItem::Stacked(stacked_inventory_item), slot) => {
+                    for entity_id in &stacked_inventory_item.entity_ids {
+                        entity_gateway.change_item_location(entity_id,
+                                                            ItemLocation::Inventory {
+                                                                character_id: character.id,
+                                                            }).await?;
+                    }
                 }
             }
-        }
+            inventory_item.1
+        };
 
-        Ok(inventory_item.0)
+        entity_gateway.set_character_inventory(&character.id, &inventory.as_inventory_entity(&character.id)).await?;
+        entity_gateway.set_character_bank(&character.id, &bank.as_bank_entity(&character.id, &BankName("".into())), BankName("".into())).await?;
+        inventory.slot(inventory_item_slot).ok_or(ItemManagerError::Idunnoman)
     }
 
     pub async fn player_feeds_mag_item<EG: EntityGateway>(&mut self,
@@ -681,7 +716,7 @@ impl ItemManager {
             }).await?;
         }
 
-        update_inventory_slots(entity_gateway, character, &inventory).await?;
+        entity_gateway.set_character_inventory(&character.id, &inventory.as_inventory_entity(&character.id)).await?;
         Ok(())
     }
 
@@ -795,7 +830,7 @@ impl ItemManager {
             }
             _ => {}
         }
-        update_inventory_slots(entity_gateway, character, &inventory).await?;
+        entity_gateway.set_character_inventory(&character.id, &inventory.as_inventory_entity(&character.id)).await?;
         Ok(())
     }
 
@@ -835,8 +870,6 @@ impl ItemManager {
                             entity_gateway.change_item_location(entity_id,
                                                                 ItemLocation::Inventory {
                                                                     character_id: character.id,
-                                                                    slot: slot.0,
-                                                                    equipped: false,
                                                                 }).await?;
                         }
                         picked_up_item.item_id
@@ -863,8 +896,6 @@ impl ItemManager {
                         entity_gateway.change_item_location(&picked_up_item.entity_id,
                                                             ItemLocation::Inventory {
                                                                 character_id: character.id,
-                                                                slot: slot.0,
-                                                                equipped: false,
                                                             }).await?;
                         picked_up_item.item_id
                     };
@@ -891,14 +922,14 @@ impl ItemManager {
                     entity_gateway.change_item_location(&picked_up_item.entity_id,
                                                         ItemLocation::Inventory {
                                                             character_id: character.id,
-                                                            slot: slot.0,
-                                                            equipped: false,
                                                         }).await?;
                     picked_up_item.item_id
                 };
                 inventory.get_item_by_id(item_id).ok_or(ItemManagerError::ItemIdNotInInventory(item_id))?
             },
         };
+
+        entity_gateway.set_character_inventory(&character.id, &inventory.as_inventory_entity(&character.id)).await?;
         Ok(inventory_item)
     }
 
@@ -914,27 +945,7 @@ impl ItemManager {
         let slot = inventory_item_handle.get_slot();
         let inventory_item = inventory_item_handle.item_mut().ok_or(ItemManagerError::CannotGetMutItem)?.individual().ok_or(ItemManagerError::CannotGetIndividualItem)?;
         inventory_item.equipped = true;
-        if let ItemDetail::Unit(u) = inventory_item.item {
-            if equip_slot > 0 {
-                inventory_item.item = ItemDetail::Unit(unit::Unit {
-                    unit: u.unit,
-                    modifier: u.modifier,
-                    armor_slot: ((equip_slot & 0x7) - 1) % 4, // or just be lazy and do equip_slot - 9
-                });
-            } else {
-                inventory_item.item = ItemDetail::Unit(unit::Unit {
-                    unit: u.unit,
-                    modifier: u.modifier,
-                    armor_slot: 0,
-                });
-            }
-        };
-        entity_gateway.change_item_location(&inventory_item.entity_id, ItemLocation::Inventory{
-            character_id: character.id,
-            slot: slot,
-            equipped: true,
-        }).await?;
-        entity_gateway.change_item(&inventory_item.entity_id, &inventory_item.item).await?;
+        entity_gateway.set_character_equips(&character.id, &inventory.as_equipped_entity()).await?;
         Ok(())
     }
 
@@ -948,19 +959,7 @@ impl ItemManager {
         let slot = inventory_item_handle.get_slot();
         let inventory_item = inventory_item_handle.item_mut().ok_or(ItemManagerError::CannotGetMutItem)?.individual().ok_or(ItemManagerError::CannotGetIndividualItem)?;
         inventory_item.equipped = false;
-        if let ItemDetail::Unit(u) = inventory_item.item {
-            inventory_item.item = ItemDetail::Unit(unit::Unit {
-                unit: u.unit,
-                modifier: u.modifier,
-                armor_slot: 0,
-            });
-        };
-        entity_gateway.change_item_location(&inventory_item.entity_id, ItemLocation::Inventory{
-            character_id: character.id,
-            slot: slot,
-            equipped: false,
-        }).await;
-        entity_gateway.change_item(&inventory_item.entity_id, &inventory_item.item).await?;
+        entity_gateway.set_character_equips(&character.id, &inventory.as_equipped_entity()).await?;
         Ok(())
     }
 
@@ -978,7 +977,7 @@ impl ItemManager {
                                                                     .collect();
 
         inventory.set_items(sorted_inventory_items);
-        update_inventory_slots(entity_gateway, character, &inventory).await;
+        entity_gateway.set_character_inventory(&character.id, &inventory.as_inventory_entity(&character.id)).await?;
         Ok(())
     }
 }

src/ship/packet/handler/message.rs

@@ -351,7 +351,7 @@ where
     };
 
     for unit_id in equipped_unit_ids {
-        item_manager.player_unequips_item(entity_gateway, &client.character, unit_id).await;
+        item_manager.player_unequips_item(entity_gateway, &client.character, unit_id).await?;
     }
 
     Ok(Box::new(None.into_iter()))

tests/test_character.rs

@@ -14,9 +14,9 @@ async fn test_save_options() {
 
     let (user1, _char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
 

tests/test_exp_gain.rs

@@ -17,9 +17,9 @@ async fn test_character_gains_exp() {
 
     let (_user1, _char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -56,9 +56,9 @@ async fn test_character_levels_up() {
     char1.exp = 49;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -94,9 +94,9 @@ async fn test_character_levels_up_multiple_times() {
 
     let (_user1, _char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -139,9 +139,9 @@ async fn test_one_character_gets_full_exp_and_other_attacker_gets_partial() {
     let (_user1, _char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
     let (_user2, _char2) = new_user_character(&mut entity_gateway, "a2", "a").await;
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 

tests/test_item_actions.rs

@@ -16,7 +16,8 @@ async fn test_equip_unit_from_equip_menu() {
 
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    entity_gateway.create_item(
+    let mut p1_inv = Vec::new();
+    p1_inv.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Armor(
                 item::armor::Armor{
@@ -28,12 +29,10 @@ async fn test_equip_unit_from_equip_menu() {
                 }),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 0,
-                equipped: true,
             }
-        }).await.unwrap();
+        }).await.unwrap());
 
-    entity_gateway.create_item(
+    p1_inv.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Unit(
                 item::unit::Unit{
@@ -43,12 +42,10 @@ async fn test_equip_unit_from_equip_menu() {
                 }),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 1,
-                equipped: false,
             }
-        }).await.unwrap();
+        }).await.unwrap());
 
-    entity_gateway.create_item(
+    p1_inv.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Unit(
                 item::unit::Unit{
@@ -58,14 +55,22 @@ async fn test_equip_unit_from_equip_menu() {
                 }),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 2,
-                equipped: false,
             }
-        }).await.unwrap();
+        }).await.unwrap());
 
-    let mut ship = ShipServerState::builder()
+    let equipped = item::EquippedEntity {
+        weapon: Some(p1_inv[0].id),
+        armor: None,
+        shield: None,
+        unit: [None; 4],
+        mag: None,
+    };
+    entity_gateway.set_character_equips(&char1.id, &equipped).await.unwrap();
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_inv)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -87,44 +92,11 @@ async fn test_equip_unit_from_equip_menu() {
         unknown1: 0,
     })))).await.unwrap().for_each(drop);
 
-    let items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    let (unit1, unit2) = (&items[1], &items[2]);
-
-    let unit1_equipped = match unit1.location {
-        item::ItemLocation::Inventory{equipped, ..} => equipped,
-        _ => false,
-    };
-
-    let unit2_equipped = match unit2.location {
-        item::ItemLocation::Inventory{equipped, ..} => equipped,
-        _ => false,
-    };
-
-    assert!({
-        match unit1.item {
-            item::ItemDetail::Unit(u) => {
-                if u.armor_slot == 0 && unit1_equipped {
-                    true
-                } else {
-                    false
-                }
-            },
-            _ => false,
-        }
-    });
-
-    assert!({
-        match unit2.item {
-            item::ItemDetail::Unit(u) => {
-                if u.armor_slot == 1 && unit2_equipped {
-                    true
-                } else {
-                    false
-                }
-            },
-            _ => false,
-        }
-    });
+    let equips = entity_gateway.get_character_equips(&char1.id).await.unwrap();
+    assert_eq!(equips.unit[0].unwrap(), item::ItemEntityId(2));
+    assert_eq!(equips.unit[1].unwrap(), item::ItemEntityId(3));
+    assert!(equips.unit[2].is_none());
+    assert!(equips.unit[3].is_none());
 }
 
 #[async_std::test]
@@ -133,7 +105,8 @@ async fn test_unequip_armor_with_units() {
 
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    entity_gateway.create_item(
+    let mut p1_inv = Vec::new();
+    p1_inv.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Armor(
                 item::armor::Armor{
@@ -145,12 +118,10 @@ async fn test_unequip_armor_with_units() {
                 }),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 0,
-                equipped: true,
             }
-        }).await;
+        }).await.unwrap());
 
-    entity_gateway.create_item(
+    p1_inv.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Unit(
                 item::unit::Unit{
@@ -160,12 +131,10 @@ async fn test_unequip_armor_with_units() {
                 }),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 1,
-                equipped: true,
             }
-        }).await.unwrap();
+        }).await.unwrap());
 
-    entity_gateway.create_item(
+    p1_inv.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Unit(
                 item::unit::Unit{
@@ -175,14 +144,22 @@ async fn test_unequip_armor_with_units() {
                 }),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 2,
-                equipped: true,
             }
-        }).await.unwrap();
+        }).await.unwrap());
 
-    let mut ship = ShipServerState::builder()
+    let equipped = item::EquippedEntity {
+        weapon: None,
+        armor: Some(p1_inv[0].id),
+        shield: None,
+        unit: [Some(p1_inv[1].id), Some(p1_inv[2].id), None, None],
+        mag: None,
+    };
+    entity_gateway.set_character_equips(&char1.id, &equipped).await.unwrap();
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_inv)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -194,27 +171,12 @@ async fn test_unequip_armor_with_units() {
         unknown1: 0,
     })))).await.unwrap().for_each(drop);
 
-    let items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    let (armor, unit1, unit2) = (&items[0], &items[1], &items[2]);
-
-    let armor_equipped = match armor.location {
-        item::ItemLocation::Inventory{equipped, ..} => equipped,
-        _ => true,
-    };
-    
-    let unit1_equipped = match unit1.location {
-        item::ItemLocation::Inventory{equipped, ..} => equipped,
-        _ => true,
-    };
-
-    let unit2_equipped = match unit2.location {
-        item::ItemLocation::Inventory{equipped, ..} => equipped,
-        _ => true,
-    };
-
-    assert!(armor_equipped == false);
-    assert!(unit1_equipped == false);
-    assert!(unit2_equipped == false);
+    let equips = entity_gateway.get_character_equips(&char1.id).await.unwrap();
+    assert!(equips.armor.is_none());
+    assert!(equips.unit[0].is_none());
+    assert!(equips.unit[1].is_none());
+    assert!(equips.unit[2].is_none());
+    assert!(equips.unit[3].is_none());
 }
 
 #[async_std::test]
@@ -223,7 +185,8 @@ async fn test_sort_items() {
 
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    entity_gateway.create_item(
+    let mut p1_inv = Vec::new();
+    p1_inv.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Armor(
                 item::armor::Armor{
@@ -235,12 +198,10 @@ async fn test_sort_items() {
                 }),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 0,
-                equipped: true,
             }
-        }).await;
+        }).await.unwrap());
 
-    entity_gateway.create_item(
+    p1_inv.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Unit(
                 item::unit::Unit{
@@ -250,12 +211,10 @@ async fn test_sort_items() {
                 }),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 1,
-                equipped: false,
             }
-        }).await;
+        }).await.unwrap());
 
-    entity_gateway.create_item(
+    p1_inv.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Unit(
                 item::unit::Unit{
@@ -265,25 +224,30 @@ async fn test_sort_items() {
                 }),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 2,
-                equipped: false,
             }
-        }).await;
+        }).await.unwrap());
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_inv)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
 
-    let old_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(old_items[0].item.item_type() == item::ItemType::Armor(item::armor::ArmorType::Frame));
-    assert!(old_items[0].location == item::ItemLocation::Inventory{
-        character_id: char1.id,
-        slot: 0,
-        equipped: true,
-    });
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 3);
+    inventory_items.items[0].with_individual(|item| {
+        assert_eq!(item.id, item::ItemEntityId(1));
+    }).unwrap();
+    inventory_items.items[1].with_individual(|item| {
+        assert_eq!(item.id, item::ItemEntityId(2));
+    }).unwrap();
+    inventory_items.items[2].with_individual(|item| {
+        assert_eq!(item.id, item::ItemEntityId(3));
+    }).unwrap();
+
 
     ship.handle(ClientId(1), &RecvShipPacket::Message(Message::new(GameMessage::SortItems(SortItems {
         client: 255,
@@ -293,11 +257,15 @@ async fn test_sort_items() {
         0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF],
     })))).await.unwrap().for_each(drop);
 
-    let items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(items[0].item.item_type() == item::ItemType::Armor(item::armor::ArmorType::Frame));
-    assert!(items[0].location == item::ItemLocation::Inventory{
-        character_id: char1.id,
-        slot: 2,
-        equipped: true,
-    });
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 3);
+    inventory_items.items[0].with_individual(|item| {
+        assert_eq!(item.id, item::ItemEntityId(2));
+    }).unwrap();
+    inventory_items.items[1].with_individual(|item| {
+        assert_eq!(item.id, item::ItemEntityId(3));
+    }).unwrap();
+    inventory_items.items[2].with_individual(|item| {
+        assert_eq!(item.id, item::ItemEntityId(1));
+    }).unwrap();
 }

tests/test_item_pickup.rs

@@ -17,7 +17,8 @@ async fn test_pick_up_item_stack_of_items_already_in_inventory() {
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
     let (_user2, char2) = new_user_character(&mut entity_gateway, "a2", "a").await;
 
-    entity_gateway.create_item(
+    let mut p1_monomate = Vec::new();
+    p1_monomate.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Tool(
                 item::tool::Tool {
@@ -26,14 +27,14 @@ async fn test_pick_up_item_stack_of_items_already_in_inventory() {
             ),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 0,
-                equipped: false,
             }
-        }).await.unwrap();
+        }).await.unwrap());
 
+    let mut p2_items = Vec::new();
     for (slot, tool) in vec![item::tool::ToolType::Monomate, item::tool::ToolType::Monofluid].into_iter().enumerate() {
-        for _ in 0..5 {
-            entity_gateway.create_item(
+        let mut item = Vec::new();
+        for _ in 0..5usize {
+            item.push(entity_gateway.create_item(
                 item::NewItemEntity {
                     item: item::ItemDetail::Tool(
                         item::tool::Tool {
@@ -42,16 +43,18 @@ async fn test_pick_up_item_stack_of_items_already_in_inventory() {
                     ),
                     location: item::ItemLocation::Inventory {
                         character_id: char2.id,
-                        slot: slot,
-                        equipped: false,
                     }
-                }).await.unwrap();
+                }).await.unwrap());
         }
+        p2_items.push(item);
     }
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(vec![p1_monomate])).await.unwrap();
+    entity_gateway.set_character_inventory(&char2.id, &item::InventoryEntity::new(p2_items)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 
@@ -80,21 +83,13 @@ async fn test_pick_up_item_stack_of_items_already_in_inventory() {
         unknown: [0; 3]
     })))).await.unwrap().for_each(drop);
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(p1_items.len() == 6);
-
-    let p1_item_ids = p1_items.iter().map(|item| {
-        item.id
-    }).collect::<Vec<_>>();
-    assert!(p1_item_ids == vec![item::ItemEntityId(1), item::ItemEntityId(2), item::ItemEntityId(3), item::ItemEntityId(4), item::ItemEntityId(5), item::ItemEntityId(6)]);
-
-    let all_items_are_monomates = p1_items.iter().all(|item| {
-        match item.item {
-            item::ItemDetail::Tool(tool) => tool.tool == item::tool::ToolType::Monomate,
-            _ => false
-        }
-    });
-    assert!(all_items_are_monomates);
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 1);
+    inventory_items.items[0].with_stacked(|items| {
+        assert_eq!(items.iter().map(|i| i.id).collect::<Vec<_>>(),
+                   vec![item::ItemEntityId(1), item::ItemEntityId(2), item::ItemEntityId(3), item::ItemEntityId(4), item::ItemEntityId(5), item::ItemEntityId(6)]);
+        assert!(items.iter().all(|item| item.item.item_type() == item::ItemType::Tool(item::tool::ToolType::Monomate)));
+    }).unwrap();
 }
 
 #[async_std::test]
@@ -104,7 +99,8 @@ async fn test_pick_up_item_stack_of_items_not_already_held() {
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
     let (_user2, char2) = new_user_character(&mut entity_gateway, "a2", "a").await;
 
-    entity_gateway.create_item(
+    let mut p2_monomate = Vec::new();
+    p2_monomate.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Tool(
                 item::tool::Tool {
@@ -113,14 +109,14 @@ async fn test_pick_up_item_stack_of_items_not_already_held() {
             ),
             location: item::ItemLocation::Inventory {
                 character_id: char2.id,
-                slot: 0,
-                equipped: false,
             }
-        }).await.unwrap();
+        }).await.unwrap());
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char2.id, &item::InventoryEntity::new(vec![p2_monomate])).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 
@@ -149,14 +145,13 @@ async fn test_pick_up_item_stack_of_items_not_already_held() {
         unknown: [0; 3]
     })))).await.unwrap().for_each(drop);
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(p1_items.len() == 1);
-
-    let first_item = p1_items.get(0).unwrap();
-    assert!(first_item.id == item::ItemEntityId(1));
-    assert!(first_item.item == item::ItemDetail::Tool(item::tool::Tool {
-        tool: item::tool::ToolType::Monomate,
-    }));
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 1);
+    inventory_items.items[0].with_stacked(|items| {
+        assert_eq!(items.len(), 1);
+        assert_eq!(items[0].id, item::ItemEntityId(1));
+        assert_eq!(items[0].item.item_type(), item::ItemType::Tool(item::tool::ToolType::Monomate));
+    }).unwrap();
 }
 
 #[async_std::test]
@@ -166,8 +161,9 @@ async fn test_pick_up_meseta_when_inventory_full() {
     let (user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
     let (user2, mut char2) = new_user_character(&mut entity_gateway, "a2", "a").await;
 
-    for slot in 0..30 {
-        entity_gateway.create_item(
+    let mut p1_items = Vec::new();
+    for _ in 0..30usize {
+        p1_items.push(entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Weapon(
                     item::weapon::Weapon {
@@ -181,18 +177,18 @@ async fn test_pick_up_meseta_when_inventory_full() {
                 ),
                 location: item::ItemLocation::Inventory {
                     character_id: char1.id,
-                    slot: slot,
-                    equipped: false,
                 }
-            }).await.unwrap();
+            }).await.unwrap());
     }
 
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_items)).await.unwrap();
+
     char2.meseta = 300;
     entity_gateway.save_character(&char2).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 
@@ -227,8 +223,8 @@ async fn test_pick_up_meseta_when_inventory_full() {
         unknown: [0; 3]
     })))).await.unwrap().for_each(drop);
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(p1_items.len() == 30);
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 30);
 
     let characters1 = entity_gateway.get_characters_by_user(&user1).await.unwrap();
     let c1 = characters1.get(0).as_ref().unwrap().as_ref().unwrap();
@@ -245,8 +241,9 @@ async fn test_pick_up_partial_stacked_item_when_inventory_is_otherwise_full() {
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
     let (_user2, char2) = new_user_character(&mut entity_gateway, "a2", "a").await;
 
-    for slot in 0..29 {
-        entity_gateway.create_item(
+    let mut p1_inv = Vec::new();
+    for slot in 0..29usize {
+        p1_inv.push(entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Weapon(
                     item::weapon::Weapon {
@@ -260,13 +257,11 @@ async fn test_pick_up_partial_stacked_item_when_inventory_is_otherwise_full() {
                 ),
                 location: item::ItemLocation::Inventory {
                     character_id: char1.id,
-                    slot: slot,
-                    equipped: false,
                 }
-            }).await.unwrap();
+            }).await.unwrap().into());
     }
 
-    entity_gateway.create_item(
+    p1_inv.push(item::InventoryItemEntity::Stacked(vec![entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Tool(
                 item::tool::Tool {
@@ -275,11 +270,11 @@ async fn test_pick_up_partial_stacked_item_when_inventory_is_otherwise_full() {
             ),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 29,
-                equipped: false,
             }
-        }).await.unwrap();
-    entity_gateway.create_item(
+        }).await.unwrap()]));
+
+    let mut p2_monomates = Vec::new();
+    p2_monomates.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Tool(
                 item::tool::Tool {
@@ -288,14 +283,15 @@ async fn test_pick_up_partial_stacked_item_when_inventory_is_otherwise_full() {
             ),
             location: item::ItemLocation::Inventory {
                 character_id: char2.id,
-                slot: 0,
-                equipped: false,
             }
-        }).await.unwrap();
+        }).await.unwrap());
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_inv)).await.unwrap();
+    entity_gateway.set_character_inventory(&char2.id, &item::InventoryEntity::new(vec![p2_monomates])).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 
@@ -324,17 +320,11 @@ async fn test_pick_up_partial_stacked_item_when_inventory_is_otherwise_full() {
         unknown: [0; 3]
     })))).await.unwrap().for_each(drop);
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(p1_items.len() == 31);
-
-    let monomate1 = p1_items.get(29).unwrap();
-    assert!(monomate1.item == item::ItemDetail::Tool(item::tool::Tool {
-        tool: item::tool::ToolType::Monomate,
-    }));
-    let monomate2 = p1_items.get(30).unwrap();
-    assert!(monomate2.item == item::ItemDetail::Tool(item::tool::Tool {
-        tool: item::tool::ToolType::Monomate,
-    }));
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 30);
+    inventory_items.items[29].with_stacked(|items| {
+        assert_eq!(items.len(), 2);
+    }).unwrap();
 }
 
 #[async_std::test]
@@ -344,8 +334,9 @@ async fn test_can_not_pick_up_item_when_inventory_full() {
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
     let (_user2, char2) = new_user_character(&mut entity_gateway, "a2", "a").await;
 
-    for slot in 0..30 {
-        entity_gateway.create_item(
+    let mut p1_inv = Vec::new();
+    for slot in 0..30usize {
+        p1_inv.push(entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Weapon(
                     item::weapon::Weapon {
@@ -359,13 +350,12 @@ async fn test_can_not_pick_up_item_when_inventory_full() {
                 ),
                 location: item::ItemLocation::Inventory {
                     character_id: char1.id,
-                    slot: slot,
-                    equipped: false,
                 }
-            }).await.unwrap();
+            }).await.unwrap());
     }
 
-    entity_gateway.create_item(
+    let mut p2_inv = Vec::new();
+    p2_inv.push(entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Weapon(
                     item::weapon::Weapon {
@@ -379,14 +369,15 @@ async fn test_can_not_pick_up_item_when_inventory_full() {
                 ),
                 location: item::ItemLocation::Inventory {
                     character_id: char2.id,
-                    slot: 0,
-                    equipped: false,
                 }
-            }).await.unwrap();
+            }).await.unwrap());
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_inv)).await.unwrap();
+    entity_gateway.set_character_inventory(&char2.id, &item::InventoryEntity::new(p2_inv)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 
@@ -415,11 +406,10 @@ async fn test_can_not_pick_up_item_when_inventory_full() {
         unknown: [0; 3]
     })))).await.unwrap().for_each(drop);
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(p1_items.len() == 30);
-
-    let p2_items = entity_gateway.get_items_by_character(&char2.id).await.unwrap();
-    assert!(p2_items.len() == 0);
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(p1_items.items.len(), 30);
+    let p2_items = entity_gateway.get_character_inventory(&char2.id).await.unwrap();
+    assert_eq!(p2_items.items.len(), 0);
 
     ship.handle(ClientId(2), &RecvShipPacket::DirectMessage(DirectMessage::new(0, GameMessage::PickupItem(PickupItem {
         client: 0,
@@ -429,8 +419,10 @@ async fn test_can_not_pick_up_item_when_inventory_full() {
         unknown: [0; 3]
     })))).await.unwrap().for_each(drop);
 
-    let p2_items = entity_gateway.get_items_by_character(&char2.id).await.unwrap();
-    assert!(p2_items.len() == 1);
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(p1_items.items.len(), 30);
+    let p2_items = entity_gateway.get_character_inventory(&char2.id).await.unwrap();
+    assert_eq!(p2_items.items.len(), 1);
 }
 
 #[async_std::test]
@@ -442,9 +434,9 @@ async fn test_can_not_drop_more_meseta_than_is_held() {
     char1.meseta = 300;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
 
     join_lobby(&mut ship, ClientId(1)).await;
@@ -481,8 +473,9 @@ async fn test_pick_up_stack_that_would_exceed_stack_limit() {
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
     let (_user2, char2) = new_user_character(&mut entity_gateway, "a2", "a").await;
 
-    for _ in 0..6 {
-        entity_gateway.create_item(
+    let mut p1_monomates = Vec::new();
+    for _ in 0..6usize {
+        p1_monomates.push(entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Tool(
                     item::tool::Tool {
@@ -491,13 +484,13 @@ async fn test_pick_up_stack_that_would_exceed_stack_limit() {
                 ),
                 location: item::ItemLocation::Inventory {
                     character_id: char1.id,
-                    slot: 0,
-                    equipped: false,
                 }
-            }).await.unwrap();
+            }).await.unwrap());
     }
-    for _ in 0..6 {
-        entity_gateway.create_item(
+
+    let mut p2_monomates = Vec::new();
+    for _ in 0..6usize {
+        p2_monomates.push(entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Tool(
                     item::tool::Tool {
@@ -506,15 +499,15 @@ async fn test_pick_up_stack_that_would_exceed_stack_limit() {
                 ),
                 location: item::ItemLocation::Inventory {
                     character_id: char2.id,
-                    slot: 0,
-                    equipped: false,
                 }
-            }).await.unwrap();
+            }).await.unwrap());
     }
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(vec![p1_monomates])).await.unwrap();
+    entity_gateway.set_character_inventory(&char2.id, &item::InventoryEntity::new(vec![p2_monomates])).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 
@@ -544,11 +537,13 @@ async fn test_pick_up_stack_that_would_exceed_stack_limit() {
     })))).await.unwrap().collect::<Vec<_>>();
     assert!(packets.len() == 0);
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(p1_items.len() == 6);
-
-    let p2_items = entity_gateway.get_items_by_character(&char2.id).await.unwrap();
-    assert!(p2_items.len() == 0);
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(p1_items.items.len(), 1);
+    p1_items.items[0].with_stacked(|items| {
+        assert_eq!(items.len(), 6);
+    }).unwrap();
+    let p2_items = entity_gateway.get_character_inventory(&char2.id).await.unwrap();
+    assert_eq!(p2_items.items.len(), 0);
 }
 
 #[async_std::test]
@@ -563,9 +558,9 @@ async fn test_can_not_pick_up_meseta_when_full() {
     char2.meseta = 300;
     entity_gateway.save_character(&char2).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 
@@ -621,9 +616,9 @@ async fn test_meseta_caps_at_999999_when_trying_to_pick_up_more() {
     char2.meseta = 300;
     entity_gateway.save_character(&char2).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 
@@ -673,8 +668,9 @@ async fn test_player_drops_partial_stack_and_other_player_picks_it_up() {
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
     let (_user2, char2) = new_user_character(&mut entity_gateway, "a2", "a").await;
 
-    for _ in 0..5 {
-        entity_gateway.create_item(
+    let mut monomates = Vec::new();
+    for _ in 0..5usize {
+        monomates.push(entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Tool(
                     item::tool::Tool {
@@ -683,15 +679,15 @@ async fn test_player_drops_partial_stack_and_other_player_picks_it_up() {
                 ),
                 location: item::ItemLocation::Inventory {
                     character_id: char1.id,
-                    slot: 0,
-                    equipped: false,
                 }
-            }).await.unwrap();
+            }).await.unwrap());
     }
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(vec![monomates])).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 
@@ -726,35 +722,17 @@ async fn test_player_drops_partial_stack_and_other_player_picks_it_up() {
         unknown: [0; 3]
     })))).await.unwrap().for_each(drop);
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(p1_items.len() == 3);
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 1);
+    inventory_items.items[0].with_stacked(|items| {
+        assert_eq!(items.iter().map(|i| i.id).collect::<Vec<_>>(),
+                   vec![item::ItemEntityId(3), item::ItemEntityId(4), item::ItemEntityId(5)]);
+    }).unwrap();
 
-    let p1_item_ids = p1_items.iter().map(|item| {
-        item.id
-    }).collect::<Vec<_>>();
-    assert!(p1_item_ids == vec![item::ItemEntityId(3), item::ItemEntityId(4), item::ItemEntityId(5)]);
-
-    let all_items_are_monomates = p1_items.iter().all(|item| {
-        match item.item {
-            item::ItemDetail::Tool(tool) => tool.tool == item::tool::ToolType::Monomate,
-            _ => false
-        }
-    });
-    assert!(all_items_are_monomates);
-
-    let p2_items = entity_gateway.get_items_by_character(&char2.id).await.unwrap();
-    assert!(p2_items.len() == 2);
-
-    let p2_item_ids = p2_items.iter().map(|item| {
-        item.id
-    }).collect::<Vec<_>>();
-    assert!(p2_item_ids == vec![item::ItemEntityId(1), item::ItemEntityId(2)]);
-
-    let all_items_are_monomates = p1_items.iter().all(|item| {
-        match item.item {
-            item::ItemDetail::Tool(tool) => tool.tool == item::tool::ToolType::Monomate,
-            _ => false
-        }
-    });
-    assert!(all_items_are_monomates);
+    let inventory_items = entity_gateway.get_character_inventory(&char2.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 1);
+    inventory_items.items[0].with_stacked(|items| {
+        assert_eq!(items.iter().map(|i| i.id).collect::<Vec<_>>(),
+                   vec![item::ItemEntityId(1), item::ItemEntityId(2)]);
+    }).unwrap();
 }

tests/test_item_use.rs

@@ -18,9 +18,11 @@ async fn test_use_monomate() {
 
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    for (slot, tool) in vec![item::tool::ToolType::Monomate, item::tool::ToolType::Monofluid].into_iter().enumerate() {
-        for _ in 0..2 {
-            entity_gateway.create_item(
+    let mut p1_items = Vec::new();
+    for tool in vec![item::tool::ToolType::Monomate, item::tool::ToolType::Monofluid].into_iter() {
+        let mut item = Vec::new();
+        for _ in 0..2usize {
+            item.push(entity_gateway.create_item(
                 item::NewItemEntity {
                     item: item::ItemDetail::Tool(
                         item::tool::Tool {
@@ -29,16 +31,17 @@ async fn test_use_monomate() {
                     ),
                     location: item::ItemLocation::Inventory {
                         character_id: char1.id,
-                        slot: slot,
-                        equipped: false,
                     }
-                }).await.unwrap();
+                }).await.unwrap());
         }
+        p1_items.push(item::InventoryItemEntity::Stacked(item));
     }
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_items)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -49,23 +52,14 @@ async fn test_use_monomate() {
         item_id: 0x10000,
     })))).await.unwrap().for_each(drop);
 
-    let items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(items.iter().filter(|item| {
-        if let item::ItemDetail::Tool(t) = item.item {
-            t.tool == item::tool::ToolType::Monomate
-        }
-        else {
-            false
-        }
-    }).count() == 1);
-    assert!(items.iter().filter(|item| {
-        if let item::ItemDetail::Tool(t) = item.item {
-            t.tool == item::tool::ToolType::Monofluid
-        }
-        else {
-            false
-        }
-    }).count() == 2);
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 2);
+    inventory_items.items[0].with_stacked(|items| {
+        assert_eq!(items.len(), 1)
+    }).unwrap();
+    inventory_items.items[1].with_stacked(|items| {
+        assert_eq!(items.len(), 2)
+    }).unwrap();
 }
 
 #[async_std::test]
@@ -74,9 +68,11 @@ async fn test_use_monomate_twice() {
 
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    for (slot, tool) in vec![item::tool::ToolType::Monomate, item::tool::ToolType::Monofluid].into_iter().enumerate() {
-        for _ in 0..3 {
-            entity_gateway.create_item(
+    let mut p1_items = Vec::new();
+    for tool in vec![item::tool::ToolType::Monomate, item::tool::ToolType::Monofluid].into_iter() {
+        let mut item = Vec::new();
+        for _ in 0..3usize {
+            item.push(entity_gateway.create_item(
                 item::NewItemEntity {
                     item: item::ItemDetail::Tool(
                         item::tool::Tool {
@@ -85,16 +81,17 @@ async fn test_use_monomate_twice() {
                     ),
                     location: item::ItemLocation::Inventory {
                         character_id: char1.id,
-                        slot: slot,
-                        equipped: false,
                     }
-                }).await.unwrap();
+                }).await.unwrap());
         }
+        p1_items.push(item::InventoryItemEntity::Stacked(item));
     }
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_items)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -110,23 +107,14 @@ async fn test_use_monomate_twice() {
         item_id: 0x10000,
     })))).await.unwrap().for_each(drop);
 
-    let items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(items.iter().filter(|item| {
-        if let item::ItemDetail::Tool(t) = item.item {
-            t.tool == item::tool::ToolType::Monomate
-        }
-        else {
-            false
-        }
-    }).count() == 1);
-    assert!(items.iter().filter(|item| {
-        if let item::ItemDetail::Tool(t) = item.item {
-            t.tool == item::tool::ToolType::Monofluid
-        }
-        else {
-            false
-        }
-    }).count() == 3);
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 2);
+    inventory_items.items[0].with_stacked(|items| {
+        assert_eq!(items.len(), 1)
+    }).unwrap();
+    inventory_items.items[1].with_stacked(|items| {
+        assert_eq!(items.len(), 3)
+    }).unwrap();
 }
 
 #[async_std::test]
@@ -135,27 +123,26 @@ async fn test_use_last_monomate() {
 
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    for (slot, tool) in vec![item::tool::ToolType::Monomate, item::tool::ToolType::Monofluid].into_iter().enumerate() {
-        for _ in 0..1 {
-            entity_gateway.create_item(
-                item::NewItemEntity {
-                    item: item::ItemDetail::Tool(
-                        item::tool::Tool {
-                            tool: tool
-                        }
-                    ),
-                    location: item::ItemLocation::Inventory {
-                        character_id: char1.id,
-                        slot: slot,
-                        equipped: false,
+    let mut p1_inv = Vec::new();
+    for tool in vec![item::tool::ToolType::Monomate, item::tool::ToolType::Monofluid].into_iter() {
+        p1_inv.push(item::InventoryItemEntity::Stacked(vec![entity_gateway.create_item(
+            item::NewItemEntity {
+                item: item::ItemDetail::Tool(
+                    item::tool::Tool {
+                        tool: tool
                     }
-                }).await.unwrap();
-        }
+                ),
+                location: item::ItemLocation::Inventory {
+                    character_id: char1.id,
+                }
+            }).await.unwrap()]));
     }
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_inv)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -166,23 +153,13 @@ async fn test_use_last_monomate() {
         item_id: 0x10000,
     })))).await.unwrap().for_each(drop);
 
-    let items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(items.iter().filter(|item| {
-        if let item::ItemDetail::Tool(t) = item.item {
-            t.tool == item::tool::ToolType::Monomate
-        }
-        else {
-            false
-        }
-    }).count() == 0);
-    assert!(items.iter().filter(|item| {
-        if let item::ItemDetail::Tool(t) = item.item {
-            t.tool == item::tool::ToolType::Monofluid
-        }
-        else {
-            false
-        }
-    }).count() == 1);
+
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 1);
+    inventory_items.items[0].with_stacked(|items| {
+        assert_eq!(items.len(), 1);
+        assert_eq!(items[0].item.item_type(), item::ItemType::Tool(item::tool::ToolType::Monofluid));
+    }).unwrap();
 }
 
 #[async_std::test]
@@ -191,7 +168,8 @@ async fn test_use_nonstackable_tool() {
 
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    entity_gateway.create_item(
+    let mut p1_items = Vec::new();
+    p1_items.push(entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Tool(
                 item::tool::Tool {
@@ -200,14 +178,14 @@ async fn test_use_nonstackable_tool() {
             ),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 0,
-                equipped: false,
             }
-        }).await.unwrap();
+        }).await.unwrap());
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_items)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -218,8 +196,8 @@ async fn test_use_nonstackable_tool() {
         item_id: 0x10000,
     })))).await.unwrap().for_each(drop);
 
-    let items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(items.len() == 0);
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 0);
 }
 
 #[async_std::test]
@@ -228,9 +206,11 @@ async fn test_use_materials() {
 
     let (user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    for (slot, tool) in vec![item::tool::ToolType::PowerMaterial, item::tool::ToolType::LuckMaterial].into_iter().enumerate() {
-        for _ in 0..5 {
-            entity_gateway.create_item(
+    let mut p1_inv = Vec::new();
+    for tool in vec![item::tool::ToolType::PowerMaterial, item::tool::ToolType::LuckMaterial].into_iter() {
+        let mut item = Vec::new();
+        for _ in 0..5usize {
+            item.push(entity_gateway.create_item(
                 item::NewItemEntity {
                     item: item::ItemDetail::Tool(
                         item::tool::Tool {
@@ -239,16 +219,17 @@ async fn test_use_materials() {
                     ),
                     location: item::ItemLocation::Inventory {
                         character_id: char1.id,
-                        slot: slot,
-                        equipped: false,
                     }
-                }).await.unwrap();
+                }).await.unwrap());
         }
+        p1_inv.push(item::InventoryItemEntity::Stacked(item));
     }
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_inv)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -269,23 +250,14 @@ async fn test_use_materials() {
         item_id: 0x10001,
     })))).await.unwrap().for_each(drop);
 
-    let items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(items.iter().filter(|item| {
-        if let item::ItemDetail::Tool(t) = item.item {
-            t.tool == item::tool::ToolType::PowerMaterial
-        }
-        else {
-            false
-        }
-    }).count() == 4);
-    assert!(items.iter().filter(|item| {
-        if let item::ItemDetail::Tool(t) = item.item {
-            t.tool == item::tool::ToolType::LuckMaterial
-        }
-        else {
-            false
-        }
-    }).count() == 3);
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 2);
+    inventory_items.items[0].with_stacked(|items| {
+        assert_eq!(items.len(), 4)
+    }).unwrap();
+    inventory_items.items[1].with_stacked(|items| {
+        assert_eq!(items.len(), 3)
+    }).unwrap();
 
     let characters = entity_gateway.get_characters_by_user(&user1).await.unwrap();
     let char = characters[0].as_ref().unwrap();

tests/test_mags.rs

@@ -17,19 +17,20 @@ async fn test_mag_feed() {
 
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    entity_gateway.create_item(
+    let mag = entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Mag(
                 item::mag::Mag::baby_mag(0)
             ),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 0,
-                equipped: true,
+                //equipped: true,
             }
         }).await.unwrap();
-    for _ in 0..7 {
-        entity_gateway.create_item(
+
+    let mut monomates = Vec::new();
+    for _ in 0..7usize {
+        monomates.push(entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Tool(
                     item::tool::Tool {
@@ -38,20 +39,32 @@ async fn test_mag_feed() {
                 ),
                 location: item::ItemLocation::Inventory {
                     character_id: char1.id,
-                    slot: 1,
-                    equipped: false,
                 }
-            }).await.unwrap();
+            }).await.unwrap());
     }
 
-    let mut ship = ShipServerState::builder()
+    let equipped = item::EquippedEntity {
+        weapon: None,
+        armor: None,
+        shield: None,
+        unit: [None; 4],
+        mag: Some(mag.id),
+    };
+    entity_gateway.set_character_equips(&char1.id, &equipped).await.unwrap();
+
+    let mut inventory = Vec::new();
+    inventory.push(mag.into());
+    inventory.push(item::InventoryItemEntity::Stacked(monomates));
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(inventory)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
 
-    for _ in 0..7 {
+    for _ in 0..7usize {
         ship.handle(ClientId(1), &RecvShipPacket::Message(Message::new(GameMessage::PlayerFeedMag(PlayerFeedMag {
             client: 0,
             target: 0,
@@ -60,18 +73,21 @@ async fn test_mag_feed() {
         })))).await.unwrap().for_each(drop);
     }
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    let mag = p1_items.get(0).unwrap();
-    match &mag.item {
-        item::ItemDetail::Mag(mag) => {
-            assert!(mag.level() == 7);
-            assert!(mag.def() == 5);
-            assert!(mag.pow() == 2);
-            assert!(mag.dex() == 0);
-            assert!(mag.mind() == 0);
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 1);
+    inventory_items.items[0].with_individual(|item| {
+        match &item.item {
+            item::ItemDetail::Mag(mag) => {
+                println!("mag! {:?}", mag);
+                assert!(mag.level() == 7);
+                assert!(mag.def() == 5);
+                assert!(mag.pow() == 2);
+                assert!(mag.dex() == 0);
+                assert!(mag.mind() == 0);
+            }
+            _ => panic!()
         }
-        _ => panic!()
-    }
+    }).unwrap();
 }
 
 #[async_std::test]
@@ -87,21 +103,21 @@ async fn test_mag_change_owner() {
     char2.section_id = SectionID::Whitill;
     entity_gateway.save_character(&char2).await.unwrap();
 
-    entity_gateway.create_item(
+    let mag = entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Mag(
                 item::mag::Mag::baby_mag(0)
             ),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 0,
-                equipped: true,
             }
         }).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(vec![mag])).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
@@ -128,15 +144,17 @@ async fn test_mag_change_owner() {
         unknown: [0; 3]
     })))).await.unwrap().for_each(drop);
 
-    let p2_items = entity_gateway.get_items_by_character(&char2.id).await.unwrap();
-    let mag = p2_items.get(0).unwrap();
-    match &mag.item {
-        item::ItemDetail::Mag(mag) => {
-            assert!(mag.class == CharacterClass::FOmarl);
-            assert!(mag.id == SectionID::Whitill);
-        },
-        _ => panic!()
-    }
+    let inventory_items = entity_gateway.get_character_inventory(&char2.id).await.unwrap();
+    assert_eq!(inventory_items.items.len(), 1);
+    inventory_items.items[0].with_individual(|item| {
+        match &item.item {
+            item::ItemDetail::Mag(mag) => {
+                assert!(mag.class == CharacterClass::FOmarl);
+                assert!(mag.id == SectionID::Whitill);
+            }
+            _ => panic!()
+        }
+    }).unwrap();
 }
 
 
@@ -153,12 +171,10 @@ async fn test_mag_cell() {
             ),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 0,
-                equipped: true,
             }
         }).await.unwrap();
 
-    for _ in 0..1000 {
+    for _ in 0..1000usize {
         let fed_tool = entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Tool (
@@ -172,7 +188,7 @@ async fn test_mag_cell() {
             }).await.unwrap();
         entity_gateway.feed_mag(&mag.id, &fed_tool.id).await.unwrap();
     }
-    entity_gateway.create_item(
+    let mag_cell = entity_gateway.create_item(
         item::NewItemEntity {
             item: item::ItemDetail::Tool(
                 item::tool::Tool {
@@ -181,14 +197,22 @@ async fn test_mag_cell() {
             ),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 1,
-                equipped: false,
             }
         }).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let equipped = item::EquippedEntity {
+        weapon: None,
+        armor: None,
+        shield: None,
+        unit: [None; 4],
+        mag: Some(mag.id),
+    };
+    entity_gateway.set_character_equips(&char1.id, &equipped).await.unwrap();
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(vec![mag, mag_cell])).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room(&mut ship, ClientId(1), "room", "").await;
@@ -199,12 +223,13 @@ async fn test_mag_cell() {
         item_id: 0x10001,
     })))).await.unwrap().for_each(drop);
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    let mag = p1_items.get(0).unwrap();
-    match &mag.item {
-        item::ItemDetail::Mag(mag) => {
-            assert!(mag.mag == item::mag::MagType::Soniti);
+    let inventory_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    inventory_items.items[0].with_individual(|item| {
+        match &item.item {
+            item::ItemDetail::Mag(mag) => {
+                assert_eq!(mag.mag, item::mag::MagType::Soniti);
+            }
+            _ => panic!()
         }
-        _ => panic!()
-    }
+    }).unwrap();
 }

tests/test_rooms.rs

@@ -18,8 +18,9 @@ async fn test_item_ids_reset_when_rejoining_rooms() {
     let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
     let (_user2, char2) = new_user_character(&mut entity_gateway, "a2", "a").await;
 
-    for slot in 0..3 {
-        entity_gateway.create_item(
+    let mut p1_inv = Vec::new();
+    for _ in 0..3usize {
+        p1_inv.push(entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Weapon(
                     item::weapon::Weapon {
@@ -33,14 +34,13 @@ async fn test_item_ids_reset_when_rejoining_rooms() {
                 ),
                 location: item::ItemLocation::Inventory {
                     character_id: char1.id,
-                    slot: slot,
-                    equipped: false,
                 }
-            }).await.unwrap();
+            }).await.unwrap());
     }
 
-    for slot in 0..10 {
-        entity_gateway.create_item(
+    let mut p2_inv = Vec::new();
+    for _ in 0..10usize {
+        p2_inv.push(entity_gateway.create_item(
             item::NewItemEntity {
                 item: item::ItemDetail::Weapon(
                     item::weapon::Weapon {
@@ -54,15 +54,16 @@ async fn test_item_ids_reset_when_rejoining_rooms() {
                 ),
                 location: item::ItemLocation::Inventory {
                     character_id: char2.id,
-                    slot: slot,
-                    equipped: false,
                 }
-            }).await.unwrap();
+            }).await.unwrap());
     }
 
-    let mut ship = ShipServerState::builder()
+    entity_gateway.set_character_inventory(&char1.id, &item::InventoryEntity::new(p1_inv)).await.unwrap();
+    entity_gateway.set_character_inventory(&char2.id, &item::InventoryEntity::new(p2_inv)).await.unwrap();
+
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
 

tests/test_shops.rs

@@ -19,9 +19,9 @@ async fn test_player_opens_weapon_shop() {
     char1.exp = 80000000;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -49,9 +49,9 @@ async fn test_player_opens_tool_shop() {
     char1.exp = 80000000;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -79,9 +79,9 @@ async fn test_player_opens_armor_shop() {
     char1.exp = 80000000;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -110,9 +110,9 @@ async fn test_player_buys_from_weapon_shop() {
     char1.meseta = 999999;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -135,8 +135,9 @@ async fn test_player_buys_from_weapon_shop() {
     let characters1 = entity_gateway.get_characters_by_user(&user1).await.unwrap();
     let c1 = characters1.get(0).as_ref().unwrap().as_ref().unwrap();
     assert!(c1.meseta < 999999);
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert_eq!(p1_items.len(), 1);
+    //let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(p1_items.items.len(), 1);
 }
 
 #[async_std::test]
@@ -148,9 +149,9 @@ async fn test_player_buys_from_tool_shop() {
     char1.meseta = 999999;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -173,8 +174,8 @@ async fn test_player_buys_from_tool_shop() {
     let characters1 = entity_gateway.get_characters_by_user(&user1).await.unwrap();
     let c1 = characters1.get(0).as_ref().unwrap().as_ref().unwrap();
     assert!(c1.meseta < 999999);
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert_eq!(p1_items.len(), 1);
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(p1_items.items.len(), 1);
 }
 
 #[async_std::test]
@@ -186,9 +187,9 @@ async fn test_player_buys_multiple_from_tool_shop() {
     char1.meseta = 999999;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -211,8 +212,12 @@ async fn test_player_buys_multiple_from_tool_shop() {
     let characters1 = entity_gateway.get_characters_by_user(&user1).await.unwrap();
     let c1 = characters1.get(0).as_ref().unwrap().as_ref().unwrap();
     assert!(c1.meseta < 999999);
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert_eq!(p1_items.len(), 5);
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(p1_items.items.len(), 1);
+    p1_items.items[0].with_stacked(|item| {
+        assert_eq!(item.len(), 5);
+        assert_eq!(item[0].item.item_type(), item::ItemType::Tool(item::tool::ToolType::Monomate));
+    }).unwrap();
 }
 
 #[async_std::test]
@@ -224,9 +229,9 @@ async fn test_player_buys_from_armor_shop() {
     char1.meseta = 999999;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -249,8 +254,8 @@ async fn test_player_buys_from_armor_shop() {
     let characters1 = entity_gateway.get_characters_by_user(&user1).await.unwrap();
     let c1 = characters1.get(0).as_ref().unwrap().as_ref().unwrap();
     assert!(c1.meseta < 999999);
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert_eq!(p1_items.len(), 1);
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(p1_items.items.len(), 1);
 }
 
 #[async_std::test]
@@ -267,9 +272,9 @@ async fn test_other_clients_see_purchase() {
     char1.meseta = 999999;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
@@ -318,14 +323,12 @@ async fn test_other_clients_see_stacked_purchase() {
             ),
             location: item::ItemLocation::Inventory {
                 character_id: char1.id,
-                slot: 0,
-                equipped: false,
             }
         }).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     log_in_char(&mut ship, ClientId(2), "a2", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
@@ -362,9 +365,9 @@ async fn test_buying_item_without_enough_mseseta() {
 
     let (user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -388,8 +391,8 @@ async fn test_buying_item_without_enough_mseseta() {
     let characters1 = entity_gateway.get_characters_by_user(&user1).await.unwrap();
     let c1 = characters1.get(0).as_ref().unwrap().as_ref().unwrap();
     assert_eq!(c1.meseta, 0);
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert_eq!(p1_items.len(), 0);
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(p1_items.items.len(), 0);
 }
 
 #[async_std::test]
@@ -401,9 +404,9 @@ async fn test_player_double_buys_from_tool_shop() {
     char1.meseta = 999999;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -444,11 +447,20 @@ async fn test_player_double_buys_from_tool_shop() {
     let characters1 = entity_gateway.get_characters_by_user(&user1).await.unwrap();
     let c1 = characters1.get(0).as_ref().unwrap().as_ref().unwrap();
     assert!(c1.meseta < 999999);
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert_eq!(p1_items.len(), 9);
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    assert_eq!(p1_items.items.len(), 2);
+    p1_items.items[0].with_stacked(|item| {
+        assert_eq!(item.len(), 7);
+        assert_eq!(item[0].item.item_type(), item::ItemType::Tool(item::tool::ToolType::Monomate));
+    }).unwrap();
+    p1_items.items[1].with_stacked(|item| {
+        assert_eq!(item.len(), 2);
+        assert_eq!(item[0].item.item_type(), item::ItemType::Tool(item::tool::ToolType::Dimate));
+    }).unwrap();
 }
 
 
+
 #[async_std::test]
 async fn test_techs_disappear_from_shop_when_bought() {
     let mut entity_gateway = InMemoryGateway::new();
@@ -458,9 +470,9 @@ async fn test_techs_disappear_from_shop_when_bought() {
     char1.meseta = 999999;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -502,8 +514,12 @@ async fn test_techs_disappear_from_shop_when_bought() {
         unknown1: 0,
     })))).await.unwrap().for_each(drop);
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(p1_items[0].item != p1_items[1].item);
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    p1_items.items[0].with_individual(|item1| {
+        p1_items.items[1].with_individual(|item2| {
+            assert_ne!(item1, item2);
+        }).unwrap();
+    }).unwrap();
 }
 
 // TOOD: this is not deterministic and can randomly fail
@@ -516,9 +532,9 @@ async fn test_units_disappear_from_shop_when_bought() {
     char1.meseta = 999999;
     entity_gateway.save_character(&char1).await.unwrap();
 
-    let mut ship = ShipServerState::builder()
+    let mut ship = Box::new(ShipServerState::builder()
         .gateway(entity_gateway.clone())
-        .build();
+        .build());
     log_in_char(&mut ship, ClientId(1), "a1", "a").await;
     join_lobby(&mut ship, ClientId(1)).await;
     create_room_with_difficulty(&mut ship, ClientId(1), "room", "", Difficulty::Ultimate).await;
@@ -560,6 +576,10 @@ async fn test_units_disappear_from_shop_when_bought() {
         unknown1: 0,
     })))).await.unwrap().for_each(drop);
 
-    let p1_items = entity_gateway.get_items_by_character(&char1.id).await.unwrap();
-    assert!(p1_items[0].item != p1_items[1].item);
+    let p1_items = entity_gateway.get_character_inventory(&char1.id).await.unwrap();
+    p1_items.items[0].with_individual(|item1| {
+        p1_items.items[1].with_individual(|item2| {
+            assert_ne!(item1, item2);
+        }).unwrap();
+    }).unwrap();
 }