Add attribute system with core stats and gameplay components

GameCore/Combat/WeaponSystem.cs

@@ -0,0 +1,39 @@
+using GameCore.Combat.Effects;
+using GameCore.ECS;
+using GameCore.ECS.Interfaces;
+using GameCore.Events;
+using GameCore.Input;
+using GameCore.Movement;
+using GameCore.Physics;
+
+namespace GameCore.Combat;
+
+public class WeaponSystem : ISystem
+{
+    public void Update(World world, float deltaTime)
+    {
+        var entities = world.GetEntitiesWith<InputStateComponent>();
+        foreach (var entity in entities)
+        {
+            var input = world.GetComponent<InputStateComponent>(entity);
+            var weapon = world.GetComponent<WeaponComponent>(entity);
+            var position = world.GetComponent<PositionComponent>(entity);
+            var rotation = world.GetComponent<RotationComponent>(entity);
+
+            if (input == null || weapon == null || position == null || rotation == null)
+                continue;
+
+            if (weapon.CooldownTimer > 0f) weapon.CooldownTimer -= deltaTime;
+
+            if (input.IsFiring && weapon.CooldownTimer <= 0f)
+            {
+                var context = new EffectContext { World = world, Owner = entity };
+
+                foreach (var effect in weapon.OnFireEffects) effect.Execute(context);
+
+                world.PublishEvent(new WeaponFiredEvent(entity, input.MuzzlePosition));
+                weapon.CooldownTimer = 1f / weapon.FireRate;
+            }
+        }
+    }
+}