🦞 Preview damage

entities/player/Player.cs

@@ -8,6 +8,9 @@ public sealed class Player : Character
     [Signal]
     public delegate void ScoreAdded(int amount);
 
+    [Signal]
+    public delegate void DamagePrepared(int amount);
+
     protected override Vector2 Forward => Vector2.Down;
 
     protected override void OnDeath()
@@ -55,4 +58,9 @@ public void AddScore(int amount)
     {
         EmitSignal(nameof(ScoreAdded), amount);
     }
+
+    public void PreviewDamage(int amount)
+    {
+        EmitSignal(nameof(DamagePrepared), amount);
+    }
 }

scenes/main/Main.cs

@@ -43,6 +43,7 @@ public override void _Process(float delta)
 
     private void onRoomExited()
     {
+        GetNode<TopHud>("TopHud").DiscardDamagePreview();
         if (gameOver) return;
         if (dungeonTraverser.MoveForward())
         {
@@ -63,6 +64,11 @@ private void onPlayerHealthChanged(int newHealth, int maxHealth, int healthChang
         }
     }
 
+    private void onDamagePrepared(int damage)
+    {
+        GetNode<TopHud>("TopHud").PreviewDamage(damage);
+    }
+
     private void onPlayerDied()
     {
         doGameOver();

scenes/main/TopHud.cs

@@ -5,17 +5,38 @@ public sealed class TopHud : Control
 {
     private const int maxWidth = 58;
 
+    private int health;
+    private int maxHealth;
+
     public override void _Ready()
     {
         UpdateScore(0);
     }
 
-    public void UpdateHealth(int newHealth, int maxHealth)
+    public void UpdateHealth(int newHealth, int newMaxHealth)
+    {
+        health = newHealth;
+        maxHealth = newMaxHealth;
+
+        updateBarWidth(GetNode<NinePatchRect>("HealthFill"), health);
+        updateBarWidth(GetNode<NinePatchRect>("HealthPreview"), health);
+    }
+
+    public void PreviewDamage(int amount)
+    {
+        updateBarWidth(GetNode<NinePatchRect>("HealthFill"), Math.Max(0, health - amount));
+    }
+
+    public void DiscardDamagePreview()
+    {
+        updateBarWidth(GetNode<NinePatchRect>("HealthFill"), health);
+    }
+
+    private void updateBarWidth(Control rect, int h)
     {
-        var healthFill = GetNode<NinePatchRect>("HealthFill");
-        var percentage = (float) newHealth / maxHealth;
+        var percentage = (float) h / maxHealth;
         var pixelWidth = (int) Math.Round(percentage * maxWidth);
-        healthFill.RectSize = new Vector2(pixelWidth, healthFill.RectSize.y);
+        rect.RectSize = new Vector2(pixelWidth, rect.RectSize.y);
     }
 
     public void UpdateScore(int newScore)

scenes/main/TopHud.tscn

@@ -96,11 +96,21 @@ custom_colors/font_color = Color( 0.654902, 0.560784, 0.541176, 1 )
 custom_fonts/font = ExtResource( 4 )
 text = "Score: 123"
 
+[node name="HealthPreview" type="NinePatchRect" parent="."]
+modulate = Color( 0.458824, 0.247059, 0.247059, 1 )
+margin_left = 17.0
+margin_top = 5.0
+margin_right = 22.0
+margin_bottom = 8.0
+rect_pivot_offset = Vector2( -12, -7 )
+texture = ExtResource( 1 )
+
 [node name="HealthFill" type="NinePatchRect" parent="."]
 margin_left = 17.0
 margin_top = 5.0
-margin_right = 17.0
+margin_right = 18.0
 margin_bottom = 8.0
+rect_pivot_offset = Vector2( -12, -7 )
 texture = ExtResource( 1 )
 
 [node name="Backpack" type="TextureRect" parent="."]

scenes/main/main.tscn

@@ -72,6 +72,7 @@ script = ExtResource( 7 )
 visible = false
 
 [connection signal="RoomExited" from="Room" to="." method="onRoomExited"]
+[connection signal="DamagePrepared" from="Player" to="." method="onDamagePrepared"]
 [connection signal="HealthChanged" from="Player" to="." method="onPlayerHealthChanged"]
 [connection signal="PlayerDied" from="Player" to="." method="onPlayerDied"]
 [connection signal="ScoreAdded" from="Player" to="." method="onScoreAdded"]

scenes/room/steps/EncounterStep.cs

@@ -88,6 +88,7 @@ private void punch()
 
         private void startPlayerTurn()
         {
+            player.PreviewDamage(hazard.Type.AttackDamage());
             player.ShowPunchButton();
             waitingForInteraction = true;
             cursor.Enable();
@@ -102,6 +103,7 @@ private void finishPlayerTurn()
             }
 
             player.AddScore(hazard.Type.Score());
+            player.PreviewDamage(0);
             QueueFree();
             complete();
         }