Add attribute system with core stats and gameplay components

GameCore/Movement/RotationSystem.cs

@@ -0,0 +1,29 @@
+using GameCore.ECS;
+using GameCore.ECS.Interfaces;
+using GameCore.Input;
+
+namespace GameCore.Movement;
+
+public class RotationSystem : ISystem
+{
+    private const float MinPitch = -(float)System.Math.PI / 2f;
+    private const float MaxPitch = (float)System.Math.PI / 2f;
+
+    public void Update(World world, float deltaTime)
+    {
+        var entities = world.GetEntitiesWith<InputStateComponent>();
+        foreach (var entity in entities)
+        {
+            var input = world.GetComponent<InputStateComponent>(entity);
+            var rotation = world.GetComponent<RotationComponent>(entity);
+
+            if (input == null || rotation == null)
+                continue;
+
+            rotation.Rotation.Y += input.LookDirection.Y;
+            rotation.Rotation.X += input.LookDirection.X;
+
+            rotation.Rotation.X = System.Math.Clamp(rotation.Rotation.X, MinPitch, MaxPitch);
+        }
+    }
+}