25 static void openDirEnum(lua_State *l);
27 static const struct luaL_reg luaMathLib[];
29 static int distance(lua_State *l);
30 static int clamp(lua_State *l);
31 static int magnitude(lua_State *l);
32 static int normalize(lua_State *l);
33 static int lerp(lua_State *l);
34 static int forwardVector(lua_State *l);
35 static int rectNearRect(lua_State *l);
36 static int checkCollision(lua_State *l);
37 static int toSceneSpace(lua_State *l);
38 static int fromSceneSpace(lua_State *l);