languages support (WIP)

src/constants.h

@@ -5,7 +5,7 @@
 #include "typedefs.h"
 
 const int ENGINE_VERSION_MAJOR = 0;
-const int ENGINE_VERSION_MINOR = 15;
+const int ENGINE_VERSION_MINOR = 16;
 
 const int CHUNK_W = 16;
 const int CHUNK_H = 256;
@@ -16,6 +16,7 @@ const int CHUNK_VOL = (CHUNK_W * CHUNK_H * CHUNK_D);
 
 /* BLOCK_VOID is block id used to mark non-existing voxel (voxel of missing chunk) */
 const blockid_t BLOCK_VOID = std::numeric_limits<blockid_t>::max();
+const blockid_t MAX_BLOCKS = BLOCK_VOID;
 
 inline uint vox_index(int x, int y, int z, int w=CHUNK_W, int d=CHUNK_D) {
 	return (y * d + z) * w + x;