Add hit animations and death for bosses

src/boss/Boss.cs

@@ -1,4 +1,5 @@
 using Chickensoft.AutoInject;
+using Chickensoft.Collections;
 using Chickensoft.GodotNodeInterfaces;
 using Chickensoft.Introspection;
 using Godot;
@@ -12,6 +13,8 @@ namespace GameJamDungeon
     public Timer AttackTimer { get; }
 
     public void Activate();
+
+    public AutoProp<double> CurrentHP { get; }
   }
 
   [Meta(typeof(IAutoNode))]
@@ -21,6 +24,8 @@ namespace GameJamDungeon
 
     public IBossLogic BossLogic { get; set; } = default!;
 
+    [Export] public EnemyStatResource BossResource { get; set; } = default!;
+
     IBossLogic IProvide<IBossLogic>.Value() => BossLogic;
 
     public BossLogic.IBinding BossBinding { get; set; } = default!;
@@ -31,6 +36,12 @@ namespace GameJamDungeon
 
     [Node] public Timer AttackTimer { get; set; } = default!;
 
+    [Node] public AnimationPlayer HitAnimation { get; set; } = default!;
+
+    [Node] public Area3D Hitbox { get; set; } = default!;
+
+    public AutoProp<double> CurrentHP { get; set; }
+
     public void Setup()
     {
       BossLogic = new BossLogic();
@@ -44,10 +55,38 @@ namespace GameJamDungeon
     public void OnResolved()
     {
       BossBinding = BossLogic.Bind();
+      BossBinding
+      .Handle((in BossLogic.Output.HitByPlayer output) =>
+      {
 
+      })
+      .Handle((in BossLogic.Output.Defeated output) =>
+      {
+        QueueFree();
+      });
       this.Provide();
       BossLogic.Start();
+      CurrentHP = new AutoProp<double>(BossResource.MaximumHP);
+      CurrentHP.Sync += OnHPChanged;
       AttackTimer.Timeout += AttackTimer_Timeout;
+      Hitbox.AreaEntered += Hitbox_AreaEntered;
+    }
+
+    private void Hitbox_AreaEntered(Area3D area)
+    {
+      if (area is IHitbox)
+      {
+        HitAnimation.Play("Hit");
+        var isCriticalHit = false;
+        var rng = new RandomNumberGenerator();
+        rng.Randomize();
+        var roll = rng.Randf();
+        if (roll <= GameRepo.PlayerData.Inventory.EquippedWeapon.Value.WeaponStats.Luck)
+          isCriticalHit = true;
+        var damage = DamageCalculator.CalculateWeaponAttackDamage(GameRepo.PlayerData.CurrentAttack.Value + GameRepo.PlayerData.BonusAttack, BossResource, GameRepo.PlayerData.Inventory.EquippedWeapon.Value.WeaponStats, isCriticalHit);
+        GD.Print($"Enemy Hit for {damage} damage.");
+        BossLogic.Input(new BossLogic.Input.HitByPlayer(damage));
+      }
     }
 
     public void Activate()
@@ -71,5 +110,11 @@ namespace GameJamDungeon
       BossLogic.Input(new BossLogic.Input.PhysicsTick(delta));
       MoveAndSlide();
     }
+
+    private void OnHPChanged(double newHP)
+    {
+      if (newHP <= 0)
+        BossLogic.Input(new BossLogic.Input.BossDefeated());
+    }
   }
 }