added block breaking

Chunk.cs

@@ -2,8 +2,8 @@
 {
     public class Chunk
     {
-        public readonly int Size = 16;
-        public readonly int Height = 256;
+        public static int Size = 16;
+        public static int Height = 256;
         public readonly int PositionX;
         public readonly int PositionY;
 
@@ -45,9 +45,12 @@
 
         private void Initialize()
         {
-            Random rng = new Random();
-            for (int i = 0; i < Size * Size * 16; i++)
-                _blocks[i] = (Blocks)rng.Next(5);
+            for (int i = 0; i < Size * Size; i++)
+                _blocks[i] = Blocks.Bedrock;
+            for (int i = Size * Size * 1; i < Size * Size * 15; i++)
+                _blocks[i] = Blocks.Stone;
+            for (int i = Size * Size * 15; i < Size * Size * 16; i++)
+                _blocks[i] = Blocks.Grass;
         }
 
         // todo
@@ -62,6 +65,9 @@
 
         private int GetBlockIndex(int x, int y, int z)
         {
+            if (x < 0 || x > 15 || y < 0 || y > 255 || z < 0 || z > 15)
+                return 0;
+
             return x + z * Size + y * Size * Size;
         }