After experimenting with a long running average at maxed out FPS and a variety of map sizes, 128 seems to actually be a good size to use if only drawing bits of world with stuff in it. 64 actually did even better in some situations, but significantly worse in others (lots of land, zoomed out).
/*
** $Id: ltm.h,v 2.6.1.1 2007/12/27 13:02:25 roberto Exp $
** Tag methods
** See Copyright Notice in lua.h
*/
#ifndef ltm_h
#define ltm_h
#include "lobject.h"
/*
* WARNING: if you change the order of this enumeration,
* grep "ORDER TM"
*/
typedef enum {
TM_INDEX,
TM_NEWINDEX,
TM_GC,
TM_MODE,
TM_EQ, /* last tag method with `fast' access */
TM_ADD,
TM_SUB,
TM_MUL,
TM_DIV,
TM_MOD,
TM_POW,
TM_UNM,
TM_LEN,
TM_LT,
TM_LE,
TM_CONCAT,
TM_CALL,
TM_N /* number of elements in the enum */
} TMS;
#define gfasttm(g,et,e) ((et) == NULL ? NULL : \
((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))
#define fasttm(l,et,e) gfasttm(G(l), et, e)
LUAI_DATA const char *const luaT_typenames[];
LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename);
LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o,
TMS event);
LUAI_FUNC void luaT_init (lua_State *L);
#endif