prevent exp steal from bosses and friends

src/entity/item/weapon.rs

@@ -1423,7 +1423,7 @@ impl WeaponType {
     }
 
     pub fn special_penalty(&self) -> f32 {
-        match(self) {
+        match self {
             WeaponType::Saber => 0.0,
             WeaponType::Brand => 0.0,
             WeaponType::Buster => 0.0,

src/ship/packet/handler/message.rs

@@ -402,11 +402,9 @@ where
     Ok(Box::new(None.into_iter()))
 }
 
-// TODO: multihit weapon penalty?
 // TODO: restrict stealable exp to 100%
 // TODO: track stealable exp per client
 // TODO: convenience function for giving exp and checking levelups (un-duplicate code here and `request_exp`)
-// TODO: reject bosses
 // TODO: use real errors (Idunnoman)
 // TODO: create InventoryError::CannotGetItemHandle or something
 pub async fn player_steals_exp<EG> (id: ClientId,
@@ -430,6 +428,9 @@ where
         .ok_or(ShipError::InvalidRoom(room_id.0 as u32))?;
 
     let monster = room.maps.enemy_by_id(expsteal.enemy_id as usize)?;
+    if monster.monster.is_boss() {
+        Ok(Box::new(None.into_iter())) // should this be an error?
+    } else {
         let monster_stats = room.monster_stats.get(&monster.monster).ok_or(ShipError::UnknownMonster(monster.monster))?;
 
         let char_special_modifier: f32 = if client.character.char_class.is_android()  {
@@ -506,3 +507,4 @@ where
 
         Ok(exp_pkts)
     }
+}

tests/test_exp_gain.rs

@@ -666,6 +666,73 @@ async fn test_exp_steal_multihit_penalty() {
     assert!(c1.character.exp == 80000066);
 }
 
+#[async_std::test]
+async fn test_cannot_steal_exp_from_boss() {
+    let mut entity_gateway = InMemoryGateway::default();
+
+    let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a", 1).await;
+
+    let mut p1_inv = Vec::new();
+    p1_inv.push(entity_gateway.create_item(
+        item::NewItemEntity {
+            item: item::ItemDetail::Weapon(
+                item::weapon::Weapon {
+                    weapon: item::weapon::WeaponType::Raygun,
+                    grind: 5,
+                    special: Some(item::weapon::WeaponSpecial::Kings),
+                    attrs: [Some(item::weapon::WeaponAttribute{attr: item::weapon::Attribute::Hit, value: 100}),
+                            Some(item::weapon::WeaponAttribute{attr: item::weapon::Attribute::Dark, value: 30}),
+                            None,],
+                    tekked: true,
+                }
+            ),
+        }).await.unwrap());
+
+    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());
+    
+    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 enemy_id = {
+        let room = ship.blocks.0[0].rooms[0].as_ref().unwrap();
+        let enemy_id = (0..).filter_map(|i| {
+            room.maps.enemy_by_id(i).ok().and_then(|enemy| {
+                if enemy.monster == MonsterType::Dragon {
+                    Some(i)
+                }
+                else {
+                    None
+                }
+            })
+        }).next().unwrap();
+        enemy_id
+    };
+
+    ship.handle(ClientId(1), &RecvShipPacket::Message(Message::new(GameMessage::ExperienceSteal(ExperienceSteal{
+        client: 0,
+        target: 0,
+        client2: enemy_id as u8,
+        target2: 16,
+        enemy_id: enemy_id as u16,
+    })))).await.unwrap().for_each(drop);
+
+    let c1 = ship.clients.get(&ClientId(1)).unwrap();
+    assert!(c1.character.exp == 0);
+}
+
 #[async_std::test]
 async fn test_exp_steal_doesnt_exceed_100p() {
     assert!(false)
@@ -676,8 +743,3 @@ async fn test_each_client_can_steal_full_exp_from_same_enemy() {
     assert!(false)
 }
 
-#[async_std::test]
-async fn test_cannot_steal_exp_from_boss() {
-    assert!(false)
-}
-