feat: add Player class wrapping Camera with chunk-coordinate accessor

Game/Player.cs

@@ -0,0 +1,45 @@
+using OpenTK.Mathematics;
+using VoxelEngine.Core;
+using VoxelEngine.Rendering;
+using VoxelChunk = VoxelEngine.World.Chunk.Chunk;
+
+namespace VoxelEngine.Game;
+
+public sealed class Player
+{
+    private readonly Configuration _cfg;
+
+    public Camera Camera { get; }
+    public Vector3 Position => this.Camera.Position;
+    public float MoveSpeed => this._cfg.MoveSpeed;
+    public float MouseSensitivity => this._cfg.MouseSensitivity;
+
+    public Vector3i ChunkPosition
+    {
+        get
+        {
+            Vector3 p = this.Position;
+            return new Vector3i(
+                Player.FloorDiv((int)MathF.Floor(p.X), VoxelChunk.Size),
+                Player.FloorDiv((int)MathF.Floor(p.Y), VoxelChunk.Size),
+                Player.FloorDiv((int)MathF.Floor(p.Z), VoxelChunk.Size));
+        }
+    }
+
+    public Player(Configuration cfg, Vector3 spawnPosition, float aspectRatio)
+    {
+        this._cfg = cfg;
+        this.Camera = new Camera(spawnPosition, aspectRatio) { Fov = cfg.Fov };
+    }
+
+    public void Move(Vector3 delta) => this.Camera.Move(delta);
+
+    public void AddRotation(float yawDelta, float pitchDelta) => this.Camera.AddRotation(yawDelta, pitchDelta);
+
+    private static int FloorDiv(int value, int size)
+    {
+        int q = value / size;
+        if (value % size != 0 && value < 0) q--;
+        return q;
+    }
+}