fix picking up stacked items messing up inventory count

src/ship/items.rs

@@ -21,16 +21,16 @@ struct RoomItemId(RoomId, u32);
 #[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
 pub struct ClientItemId(pub u32);
 
-#[derive(Debug, Clone)]
-enum ActiveItemEntityId {
+#[derive(Debug, Clone, PartialEq)]
+pub enum ActiveItemEntityId {
     Individual(ItemEntityId),
     Stacked(Vec<ItemEntityId>),
     Meseta(Meseta),
 }
 
 
-#[derive(Debug, Clone)]
-enum HeldItemType {
+#[derive(Debug, Clone, PartialEq)]
+pub enum HeldItemType {
     Individual(ItemDetail),
     Stacked(Tool, usize),
 }
@@ -89,10 +89,10 @@ impl FloorItemType {
 
 #[derive(Debug, Clone)]
 pub struct InventoryItem {
-    entity_id: ActiveItemEntityId,
-    item_id: ClientItemId,
-    item: HeldItemType,
-    equipped: bool,
+    pub entity_id: ActiveItemEntityId,
+    pub item_id: ClientItemId,
+    pub item: HeldItemType,
+    pub equipped: bool,
 }
 
 #[derive(Debug, Clone)]
@@ -113,6 +113,7 @@ pub struct BankItem {
 }
 
 
+#[derive(Debug)]
 pub struct CharacterInventory<'a>(&'a Vec<InventoryItem>);
 
 impl<'a> CharacterInventory<'a> {
@@ -132,6 +133,10 @@ impl<'a> CharacterInventory<'a> {
             })
     }
 
+    pub fn slot(&self, slot: usize) -> Option<&'a InventoryItem> {
+        self.0.get(slot)
+    }
+
     pub fn count(&self) -> usize {
         self.0.len()
     }
@@ -325,13 +330,46 @@ impl ItemManager {
                     inventory.push(inventory_item);
                 } // else something went very wrong TODO: log it
             },
-            FloorItemType::Stacked(tool, usize) => {
-                let inventory_item = InventoryItem {
-                    entity_id: floor_item.entity_id,
-                    item_id: floor_item.item_id,
-                    item: HeldItemType::Stacked(tool, usize),
-                    equipped: false,
-                };
+            FloorItemType::Stacked(tool, amount) => {
+                let inventory_item = inventory.iter_mut()
+                    .filter(|i| {
+                        if let HeldItemType::Stacked(tooltype, _amount) = i.item {
+                            tooltype == tool
+                        }
+                        else {
+                            false
+                        }
+                    })
+                    .next()
+                    .map(|existing_inv_item| {
+                        // TOOD: check stack amount does not exceed limit
+                        if let (ActiveItemEntityId::Stacked(ref mut inv_item_id),
+                                ActiveItemEntityId::Stacked(floor_item_id))
+                            = (&mut existing_inv_item.entity_id, &floor_item.entity_id)
+                        {
+                            inv_item_id.append(&mut floor_item_id.clone());
+                        }
+
+                        if let (HeldItemType::Stacked(_inv_tooltype, ref mut inv_amount),
+                                FloorItemType::Stacked(_floor_tooltype, floor_amount))
+                            = (&mut existing_inv_item.item, &floor_item.item)
+                        {
+                            // TODO: check tools are eq?
+                            *inv_amount += floor_amount
+                        }
+
+                        existing_inv_item.clone()
+                    })
+                    .unwrap_or_else(|| {
+                        let picked_up_item = InventoryItem {
+                            entity_id: floor_item.entity_id,
+                            item_id: floor_item.item_id,
+                            item: HeldItemType::Stacked(tool, amount),
+                            equipped: false,
+                        };
+                        inventory.push(picked_up_item.clone());
+                        picked_up_item
+                    });
 
                 if let ActiveItemEntityId::Stacked(item_ids) = &inventory_item.entity_id {
                     for item_id in item_ids {
@@ -345,7 +383,6 @@ impl ItemManager {
                             },
                         }); // TODO: error check
                     };
-                    inventory.push(inventory_item);
                 } // else something went very wrong TODO: log it
             },
             FloorItemType::Meseta(meseta) => {

src/ship/ship.rs

@@ -243,7 +243,7 @@ pub struct ShipServerState<EG: EntityGateway> {
     level_table: CharacterLevelTable,
     name: String,
     rooms: Rooms,
-    item_manager: items::ItemManager,
+    pub item_manager: items::ItemManager,
     quests: quests::QuestList,
 }
 

tests/test_item_pickup.rs

@@ -0,0 +1,216 @@
+use std::time::SystemTime;
+
+use elseware::common::serverstate::{ClientId, ServerState};
+use elseware::entity::gateway::{EntityGateway, InMemoryGateway};
+use elseware::entity::account::{UserAccountEntity, NewUserAccountEntity, NewUserSettingsEntity};
+use elseware::entity::character::{CharacterEntity, NewCharacterEntity};
+//use elseware::entity::item::{NewItemEntity, ItemDetail, ItemLocation};
+use elseware::entity::item;
+use elseware::ship::ship::{ShipServerState, RecvShipPacket};
+use elseware::ship::items::{ClientItemId, ActiveItemEntityId, HeldItemType};
+
+use libpso::packet::ship::*;
+use libpso::packet::messages::*;
+use libpso::packet::login::{Login, Session};
+use libpso::{utf8_to_array, utf8_to_utf16_array};
+
+
+pub fn new_user_character<EG: EntityGateway>(entity_gateway: &mut EG, username: &str, password: &str) -> (UserAccountEntity, CharacterEntity) {
+    let new_user = NewUserAccountEntity {
+        username: username.into(),
+        password: bcrypt::hash(password, 5).unwrap(),
+        guildcard: 1,
+        team_id: None,
+        banned: false,
+        muted_until: SystemTime::now(),
+        created_at: SystemTime::now(),
+        flags: 0,
+    };
+
+    let user = entity_gateway.create_user(new_user).unwrap();
+    let new_settings = NewUserSettingsEntity::new(user.id);
+    let _settings = entity_gateway.create_user_settings(new_settings).unwrap();
+    let new_character = NewCharacterEntity::new(user.id);
+    let character = entity_gateway.create_character(new_character).unwrap();
+
+    (user, character)
+}
+
+pub fn log_in_char<EG: EntityGateway>(ship: &mut ShipServerState<EG>, id: ClientId, username: &str, password: &str) {
+    let username = username.to_string();
+    let password = password.to_string();
+    ship.handle(id, &RecvShipPacket::Login(Login {
+        tag: 0,
+        guildcard: 0,
+        version: 0,
+        unknown1: [0; 6],
+        team: 0,
+        username: utf8_to_array!(username, 16),
+        unknown2: [0; 32],
+        password: utf8_to_array!(password, 16),
+        unknown3: [0; 40],
+        hwinfo: [0; 8],
+        session: Session::new(),
+    })).unwrap().for_each(drop);
+}
+
+pub fn join_lobby<EG: EntityGateway>(ship: &mut ShipServerState<EG>, id: ClientId) {
+    ship.handle(id, &RecvShipPacket::CharData(CharData {
+        _unknown: [0; 0x828]
+    })).unwrap().for_each(drop);
+}
+
+pub fn create_room<EG: EntityGateway>(ship: &mut ShipServerState<EG>, id: ClientId, name: &str, password: &str) {
+    ship.handle(id, &RecvShipPacket::CreateRoom(CreateRoom {
+        unknown: [0; 2],
+        name: utf8_to_utf16_array!(name, 16),
+        password: utf8_to_utf16_array!(password, 16),
+        difficulty: 0,
+        battle: 0,
+        challenge: 0,
+        episode: 1,
+        single_player: 0,
+        padding: [0; 3],
+    })).unwrap().for_each(drop);
+    ship.handle(id, &RecvShipPacket::DoneBursting(DoneBursting {})).unwrap().for_each(drop);
+}
+
+pub fn join_room<EG: EntityGateway>(ship: &mut ShipServerState<EG>, id: ClientId, room_id: u32) {
+    ship.handle(id, &RecvShipPacket::MenuSelect(MenuSelect {
+        menu: ROOM_MENU_ID,
+        item: room_id,
+    })).unwrap().for_each(drop);
+}
+
+
+#[test]
+fn test_pick_up_item_stack_of_items_already_in_inventory() {
+    let mut entity_gateway = InMemoryGateway::new();
+
+    let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a");
+    let (_user2, char2) = new_user_character(&mut entity_gateway, "a2", "a");
+
+    entity_gateway.create_item(
+        item::NewItemEntity {
+            item: item::ItemDetail::Tool(
+                item::tool::Tool {
+                    tool: item::tool::ToolType::Monomate
+                }
+            ),
+            location: item::ItemLocation::Inventory {
+                character_id: char1.id,
+                slot: 0,
+                equipped: false,
+            }
+        });
+
+    for (slot, tool) in vec![item::tool::ToolType::Monomate, item::tool::ToolType::Monofluid].into_iter().enumerate() {
+        for _ in 0..5 {
+            entity_gateway.create_item(
+                item::NewItemEntity {
+                    item: item::ItemDetail::Tool(
+                        item::tool::Tool {
+                            tool: tool
+                        }
+                    ),
+                    location: item::ItemLocation::Inventory {
+                        character_id: char2.id,
+                        slot: slot,
+                        equipped: false,
+                    }
+                });
+        }
+    }
+    
+    let mut ship = ShipServerState::new(entity_gateway.clone());
+    log_in_char(&mut ship, ClientId(1), "a1", "a");
+    log_in_char(&mut ship, ClientId(2), "a2", "a");
+
+    join_lobby(&mut ship, ClientId(1));
+    join_lobby(&mut ship, ClientId(2));
+
+    create_room(&mut ship, ClientId(1), "room", "");
+    join_room(&mut ship, ClientId(2), 0);
+
+    ship.handle(ClientId(2), &RecvShipPacket::Message(Message::new(GameMessage::PlayerDropItem(PlayerDropItem {
+        client: 0,
+        target: 0,
+        unknown1: 0,
+        area: 0,
+        item_id: 0x210000,
+        x: 0.0,
+        y: 0.0,
+        z: 0.0,
+    })))).unwrap().for_each(drop);
+
+    ship.handle(ClientId(1), &RecvShipPacket::DirectMessage(DirectMessage::new(0, GameMessage::PickupItem(PickupItem {
+        client: 0,
+        target: 0,
+        item_id: 0x210000,
+        area: 0,
+        unknown: [0; 3]
+    })))).unwrap().for_each(drop);
+
+    let p1_inventory = ship.item_manager.get_character_inventory(&char1).unwrap();
+    assert!(p1_inventory.count() == 1);
+    let inventory_item = p1_inventory.slot(0).unwrap();
+    assert!(inventory_item.entity_id == ActiveItemEntityId::Stacked(vec![item::ItemEntityId(1), item::ItemEntityId(2), item::ItemEntityId(3), item::ItemEntityId(4), item::ItemEntityId(5), item::ItemEntityId(6)]));
+    assert!(inventory_item.item == HeldItemType::Stacked(item::tool::Tool {tool: item::tool::ToolType::Monomate}, 6));
+}
+
+#[test]
+fn test_pick_up_item_stack_of_items_not_already_held() {
+    let mut entity_gateway = InMemoryGateway::new();
+
+    let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a");
+    let (_user2, char2) = new_user_character(&mut entity_gateway, "a2", "a");
+
+    entity_gateway.create_item(
+        item::NewItemEntity {
+            item: item::ItemDetail::Tool(
+                item::tool::Tool {
+                    tool: item::tool::ToolType::Monomate
+                }
+            ),
+            location: item::ItemLocation::Inventory {
+                character_id: char2.id,
+                slot: 0,
+                equipped: false,
+            }
+        });
+
+    let mut ship = ShipServerState::new(entity_gateway.clone());
+    log_in_char(&mut ship, ClientId(1), "a1", "a");
+    log_in_char(&mut ship, ClientId(2), "a2", "a");
+
+    join_lobby(&mut ship, ClientId(1));
+    join_lobby(&mut ship, ClientId(2));
+
+    create_room(&mut ship, ClientId(1), "room", "");
+    join_room(&mut ship, ClientId(2), 0);
+
+    ship.handle(ClientId(2), &RecvShipPacket::Message(Message::new(GameMessage::PlayerDropItem(PlayerDropItem {
+        client: 0,
+        target: 0,
+        unknown1: 0,
+        area: 0,
+        item_id: 0x210000,
+        x: 0.0,
+        y: 0.0,
+        z: 0.0,
+    })))).unwrap().for_each(drop);
+
+    ship.handle(ClientId(1), &RecvShipPacket::DirectMessage(DirectMessage::new(0, GameMessage::PickupItem(PickupItem {
+        client: 0,
+        target: 0,
+        item_id: 0x210000,
+        area: 0,
+        unknown: [0; 3]
+    })))).unwrap().for_each(drop);
+
+    let p1_inventory = ship.item_manager.get_character_inventory(&char1).unwrap();
+    assert!(p1_inventory.count() == 1);
+    let inventory_item = p1_inventory.slot(0).unwrap();
+    assert!(inventory_item.entity_id == ActiveItemEntityId::Stacked(vec![item::ItemEntityId(1)]));
+    assert!(inventory_item.item == HeldItemType::Stacked(item::tool::Tool {tool: item::tool::ToolType::Monomate}, 1));
+}