Add NUM_TILES_PER_METATILE

include/fieldmap.h

@@ -12,6 +12,8 @@
 #define MAX_MAP_DATA_SIZE 0x2800
 #define VIRTUAL_MAP_SIZE (MAX_MAP_DATA_SIZE)
 
+#define NUM_TILES_PER_METATILE 8
+
 // Map coordinates are offset by 7 when using the map
 // buffer because it needs to load sufficient border
 // metatiles to fill the player's view (the player has