Damage dealing through meta attribute and custom exec

forge/calculators/ForgeDamageExecution.cs

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+using System.Collections.Generic;
+using Gamesmiths.Forge.Attributes;
+using Gamesmiths.Forge.Core;
+using Gamesmiths.Forge.Effects;
+using Gamesmiths.Forge.Effects.Calculator;
+using Gamesmiths.Forge.Effects.Magnitudes;
+using Gamesmiths.Forge.Effects.Modifiers;
+using Gamesmiths.Forge.Events;
+using Gamesmiths.Forge.Godot.Core;
+using Gamesmiths.Forge.Godot.Resources;
+using Gamesmiths.Forge.Godot.Resources.Calculators;
+using Gamesmiths.Forge.Tags;
+using Godot;
+
+namespace Movementtests.tools.calculators;
+
+public record DamageDone(DamageType DamageType, float Damage, float OverkillDamage);
+
+public class DamageExecution : CustomExecution
+{
+	private readonly DamageType _damageType;
+	private readonly ForgeTagContainer? _damageDealerEventTags;
+	private readonly ForgeTagContainer? _damageReceiverEventTags;
+
+	// Define attributes to capture and modify
+	public AttributeCaptureDefinition TargetHealth { get; }
+
+	public AttributeCaptureDefinition TargetIncomingDamage { get; }
+
+	public DamageExecution(DamageType damageType, ForgeTagContainer? damageDealerEventTags, ForgeTagContainer? damageReceiverEventTags)
+	{
+		// Capture target mana and magic resistance
+		TargetHealth = new AttributeCaptureDefinition(
+			"CharacterAttributeSet.Health",
+			AttributeCaptureSource.Target,
+			false);
+
+		TargetIncomingDamage = new AttributeCaptureDefinition(
+			"MetaAttributeSet.IncomingDamage",
+			AttributeCaptureSource.Target);
+
+		// Register attributes for capture
+		AttributesToCapture.Add(TargetHealth);
+		AttributesToCapture.Add(TargetIncomingDamage);
+		
+		_damageType = damageType;
+		_damageDealerEventTags = damageDealerEventTags;
+		_damageReceiverEventTags = damageReceiverEventTags;
+	}
+
+	public override ModifierEvaluatedData[] EvaluateExecution(
+		Effect effect, IForgeEntity target, EffectEvaluatedData? effectEvaluatedData)
+	{
+		var results = new List<ModifierEvaluatedData>();
+
+		float targetIncomingDamage = CaptureAttributeMagnitude(
+			TargetIncomingDamage,
+			effect,
+			target,
+			effectEvaluatedData);
+
+		if (targetIncomingDamage <= 0)
+		{
+			return [.. results];
+		}
+
+		if (effectEvaluatedData?.TryGetContextData(out float multiplier) == true)
+		{
+			targetIncomingDamage *= multiplier;
+		}
+
+		// Apply health reduction to target if attribute exists
+		if (TargetHealth.TryGetAttribute(target, out EntityAttribute? targetHealthAttribute))
+		{
+			results.Add(new ModifierEvaluatedData(
+				targetHealthAttribute,
+				ModifierOperation.FlatBonus,
+				-targetIncomingDamage)); // Negative for damage
+		}
+
+		var finalDamage = targetIncomingDamage;
+		var overkillDamage = 0.0f;
+		if (targetHealthAttribute!.CurrentValue - targetIncomingDamage <= targetHealthAttribute.Min)
+		{
+			finalDamage = targetHealthAttribute.CurrentValue - targetHealthAttribute.Min;
+			overkillDamage = targetIncomingDamage - finalDamage;
+		}
+		
+		if (_damageReceiverEventTags is null) return [.. results];
+		
+		target.Events.Raise(new EventData<DamageDone>
+		{
+			EventTags = _damageReceiverEventTags.GetTagContainer(),
+			Source = effect.Ownership.Owner,
+			Target = target,
+			EventMagnitude = finalDamage,
+			Payload = new DamageDone(_damageType, finalDamage, overkillDamage)
+		});
+
+		if (effect.Ownership.Source is null || _damageDealerEventTags is null)
+		{
+			return [.. results];
+		}
+
+		effect.Ownership.Source.Events.Raise(new EventData<DamageDone>
+		{
+			EventTags = _damageDealerEventTags.GetTagContainer(),
+			Source = effect.Ownership.Owner,
+			Target = target,
+			EventMagnitude = finalDamage,
+			Payload = new DamageDone(_damageType, finalDamage, overkillDamage)
+		});
+
+		return [.. results];
+	}
+}
+
+
+[Tool]
+[GlobalClass]
+public partial class ForgeDamageExecution : ForgeCustomExecution
+{
+    [Export]
+    public DamageType DamageType { get; set; } = DamageType.Physical;
+    [Export]
+    public ForgeTagContainer? DamageDealerEventTags { get; set; }
+    [Export]
+    public ForgeTagContainer? DamageReceiverEventTags { get; set; }
+
+    public override CustomExecution GetExecutionClass()
+    {
+        return new DamageExecution(DamageType, DamageDealerEventTags, DamageReceiverEventTags);
+    }
+}