first commit

Minecraft.World/BlockReplacements.cpp

@@ -0,0 +1,26 @@
+#include "stdafx.h"
+#include "BlockReplacements.h"
+#include "net.minecraft.world.level.tile.h"
+
+byteArray BlockReplacements::replacements = byteArray(256);
+
+void BlockReplacements::staticCtor()
+{
+    for (int i = 0; i < 256; i++)
+	{
+        byte b = (byte) i;
+        if (b != 0 && Tile::tiles[b & 0xff] == NULL)
+		{
+            b = 0;
+        }
+        BlockReplacements::replacements[i] = b;
+    }
+}
+
+void BlockReplacements::replace(byteArray blocks)
+{
+    for (unsigned int i = 0; i < blocks.length; i++)
+	{
+        blocks[i] = replacements[blocks[i] & 0xff];
+    }
+}