Add core game components including ConfigFileHandler, GameManager, SaveSystem, and UIManager

scripts/components/DamageComponent.cs

@@ -0,0 +1,105 @@
+using Godot;
+using Mr.BrickAdventures.scripts.Resources;
+
+namespace Mr.BrickAdventures.scripts.components;
+
+public partial class DamageComponent : Node
+{
+    [Export] public float Damage { get; set; } = 0.25f;
+    [Export] public Area2D Area { get; set; }
+    [Export] public StatusEffectDataResource StatusEffectData { get; set; }
+    [Export] public Timer DamageTimer { get; set; }
+    
+    private Node _currentTarget = null;
+    
+    [Signal] public delegate void EffectInflictedEventHandler(Node2D target, StatusEffectDataResource effect);
+
+    public override void _Ready()
+    {
+        if (Area == null)
+        {
+            GD.PushError($"DamageComponent: Area2D node is not set.");
+            return;
+        }
+        
+        Area.BodyEntered += OnAreaBodyEntered;
+        Area.BodyExited += OnAreaBodyExited;
+        Area.AreaEntered += OnAreaAreaEntered;
+
+        if (DamageTimer != null)
+        {
+            DamageTimer.Timeout += OnDamageTimerTimeout;
+        }
+    }
+
+    public override void _Process(double delta)
+    {
+        if (_currentTarget == null) return;
+        if (DamageTimer != null) return;
+        
+        ProcessEntityAndApplyDamage(_currentTarget as Node2D);
+    }
+
+    public void DealDamage(HealthComponent target) => target.DecreaseHealth(Damage);
+
+    private void OnAreaAreaEntered(Area2D area)
+    {
+        if (!CheckIfProcessingIsOn())
+            return;
+        if (area == Area) return;
+
+        var parent = area.GetParent();
+        if (parent.HasNode("DamageComponent"))
+            ProcessEntityAndApplyDamage(parent as Node2D);
+    }
+
+    private void OnAreaBodyExited(Node2D body)
+    {
+        if (body != _currentTarget) return;
+        _currentTarget = null;
+        DamageTimer?.Stop();
+    }
+
+    private void OnAreaBodyEntered(Node2D body)
+    {
+        _currentTarget = body;
+
+        if (!CheckIfProcessingIsOn())
+            return;
+
+        DamageTimer?.Start();
+
+        ProcessEntityAndApplyDamage(body);
+    }
+    
+    private void OnDamageTimerTimeout()
+    {
+        if (_currentTarget == null) return;
+        
+        ProcessEntityAndApplyDamage(_currentTarget as Node2D);
+    }
+    
+    private void ProcessEntityAndApplyDamage(Node2D body)
+    {
+        if (body == null) return;
+
+        if (!body.HasNode("HealthComponent")) return;
+        var health = body.GetNode<HealthComponent>("HealthComponent");
+        var inv = body.GetNodeOrNull<InvulnerabilityComponent>("InvulnerabilityComponent");
+
+        if (inv != null && inv.IsInvulnerable())
+            return;
+
+        if (StatusEffectData != null && StatusEffectData.Type != StatusEffectType.None)
+            EmitSignalEffectInflicted(body, StatusEffectData);
+
+        DealDamage(health);
+
+        inv?.Activate();
+    }
+    
+    private bool CheckIfProcessingIsOn()
+    {
+        return ProcessMode is ProcessModeEnum.Inherit or ProcessModeEnum.Always;
+    }
+}