Add attribute system with core stats and gameplay components

GameCore/Combat/Effects/BulkProjectileEffect.cs

@@ -0,0 +1,48 @@
+using GameCore.Combat.Interfaces;
+using GameCore.Events;
+using GameCore.Input;
+using GameCore.Movement;
+
+namespace GameCore.Combat.Effects;
+
+public class BulkProjectileEffect(string archetypeId, int count, float spreadAngle, float speed) : IEffect
+{
+    private static readonly Random _random = new();
+
+    public void Execute(EffectContext context)
+    {
+        var ownerInput = context.World.GetComponent<InputStateComponent>(context.Owner);
+        if (ownerInput == null)
+            return;
+
+        var ownerRotation = context.World.GetComponent<RotationComponent>(context.Owner);
+        if (ownerRotation == null) return;
+
+        var spreadRadians = spreadAngle * (float)System.Math.PI / 180f;
+
+        for (var i = 0; i < count; i++)
+        {
+            var direction = ownerInput.MuzzleDirection;
+
+            if (spreadRadians > 0f)
+            {
+                var randomYaw = ((float)_random.NextDouble() * 2f - 1f) * spreadRadians;
+                var randomPitch = ((float)_random.NextDouble() * 2f - 1f) * spreadRadians;
+
+                direction = context.World.WorldQuery.RotateVectorByYaw(direction, randomYaw);
+                direction.Y += (float)System.Math.Sin(randomPitch);
+                direction = direction.Normalize();
+            }
+
+            var initialVelocity = direction * speed;
+
+            context.World.PublishEvent(new SpawnEntityEvent(
+                archetypeId,
+                ownerInput.MuzzlePosition,
+                ownerRotation.Rotation,
+                context.Owner,
+                initialVelocity
+            ));
+        }
+    }
+}