Kill half of enemies in room

src/enemy/Enemy.cs

@@ -148,6 +148,7 @@ public partial class Enemy : CharacterBody3D, IEnemy, IProvide<IEnemyLogic>
 
   public void Die()
   {
+    _currentHP.OnNext(0);
     _enemyLogic.Input(new EnemyLogic.Input.EnemyDefeated());
     _collisionShape.SetDeferred("disabled", true);
     _enemyModelView.PlayDeathAnimation();

src/items/effect/EffectItem.cs

@@ -43,6 +43,8 @@ public partial class EffectItem : Node3D, IUsableItem
       Game.DoubleEXP(TimeSpan.FromSeconds(30));
     if (_effectItemStats.UsableItemTags.Contains(UsableItemTag.TeleportAllEnemiesToRoom))
       TeleportEnemiesToCurrentRoom();
+    if (_effectItemStats.UsableItemTags.Contains(UsableItemTag.KillHalfEnemiesInRoom))
+      KillHalfEnemiesInRoom();
   }
 
   public void SetItemStats(InventoryItemStats inventoryItemStats)
@@ -88,4 +90,19 @@ public partial class EffectItem : Node3D, IUsableItem
       enemy.SetEnemyGlobalPosition(randomSpawnPoint.GlobalPosition);
     }
   }
+
+  private void KillHalfEnemiesInRoom()
+  {
+    var currentRoom = Player.GetCurrentRoom();
+    if (currentRoom is not MonsterRoom)
+      return;
+
+    var currentMonsterRoom = (MonsterRoom)currentRoom;
+    var enemyList = currentMonsterRoom.GetEnemiesInCurrentRoom().ToList();
+    var enemiesToKill = enemyList.Count / 2;
+    for (var i = 0; i < enemiesToKill; i++)
+    {
+      enemyList[i].Die();
+    }
+  }
 }

src/items/effect/resources/DevicBalance.tres

@@ -0,0 +1,18 @@
+[gd_resource type="Resource" script_class="EffectItemStats" load_steps=3 format=3 uid="uid://cxfu683mhpu6v"]
+
+[ext_resource type="Script" uid="uid://b5w4iw4iqmxtn" path="res://src/items/effect/EffectItemStats.cs" id="1_50lqu"]
+[ext_resource type="Texture2D" uid="uid://c7v5pm32sedkg" path="res://src/items/effect/textures/entropic seal.PNG" id="1_j7j7j"]
+
+[resource]
+script = ExtResource("1_50lqu")
+UsableItemTags = Array[int]([6])
+Name = "Devic Balance"
+Description = "Kill half of all enemies in current room."
+Texture = ExtResource("1_j7j7j")
+SpawnRate = 0.5
+ThrowSpeed = 12.0
+HealHPAmount = 0
+HealVTAmount = 0
+ThrowDamage = 5
+ItemTags = Array[int]([])
+metadata/_custom_type_script = "uid://b5w4iw4iqmxtn"

src/map/dungeon/floors/Floor00.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=62 format=4 uid="uid://dl6h1djc27ddl"]
+[gd_scene load_steps=63 format=4 uid="uid://dl6h1djc27ddl"]
 
 [ext_resource type="Script" uid="uid://c1nhqlem1ew3m" path="res://src/map/dungeon/code/Floor0.cs" id="1_db2o3"]
 [ext_resource type="Texture2D" uid="uid://b27ksiyfefb33" path="res://src/map/dungeon/models/Set A/02. Altar/02_ALTAR_FLOOR_ZER0_VER_outside_desert.png" id="2_xh2ej"]
@@ -16,7 +16,8 @@
 [ext_resource type="Texture2D" uid="uid://4k6vtn4oip5f" path="res://src/map/dungeon/models/Set A/02. Altar/02_ALTAR_FLOOR_ZER0_VER_TILE4.png" id="14_qqc7i"]
 [ext_resource type="Texture2D" uid="uid://cururtxtgylxf" path="res://src/map/dungeon/models/Set A/02. Altar/02_ALTAR_FLOOR_ZER0_VER_COLUMN.jpg" id="15_ojbcg"]
 [ext_resource type="PackedScene" uid="uid://d0pl1n1jf77jm" path="res://src/items/effect/EffectItem.tscn" id="16_aqomv"]
-[ext_resource type="Resource" uid="uid://bptg6eybj5dxk" path="res://src/items/effect/resources/DevicRecall.tres" id="17_db2o3"]
+[ext_resource type="Resource" uid="uid://cxfu683mhpu6v" path="res://src/items/effect/resources/DevicBalance.tres" id="17_db2o3"]
+[ext_resource type="Resource" uid="uid://bptg6eybj5dxk" path="res://src/items/effect/resources/DevicRecall.tres" id="18_ntxe5"]
 
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_3ubi4"]
 shading_mode = 0
@@ -891,3 +892,7 @@ shape = SubResource("BoxShape3D_ntxe5")
 [node name="EffectItem" parent="." instance=ExtResource("16_aqomv")]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -3.65239, -2.58967, -1.14642)
 _effectItemStats = ExtResource("17_db2o3")
+
+[node name="EffectItem2" parent="." instance=ExtResource("16_aqomv")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -3.65239, -2.58967, -1.14642)
+_effectItemStats = ExtResource("18_ntxe5")