added block breaking

Player.cs

@@ -0,0 +1,40 @@
+using OpenTK.Mathematics;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Voxel
+{
+    public class Player
+    {
+        public Vector3 Position;
+
+        private World _world;
+
+        public Player(World world, Vector3 startPos)
+        {
+            _world = world;
+        }
+
+        public void BreakBlock()
+        {
+            var (hit, x, y, z) = _world.Raycast(5f); // max 5 blocks
+            if (hit != Blocks.Air)
+            {
+                _world.SetBlock(x, y, z, Blocks.Air);
+            }
+        }
+
+        public void Update(float deltaTime)
+        {
+            Camera.Update(deltaTime);
+
+            if (Input.GetKey(OpenTK.Windowing.GraphicsLibraryFramework.Keys.Space))
+            {
+                BreakBlock();
+            }
+        }
+    }
+}