Add tofixed lua function

src/lua_baselib.c

@@ -345,6 +345,18 @@ static int lib_reserveLuabanks(lua_State *L)
 	return 1;
 }
 
+static int lib_tofixed(lua_State *L)
+{
+	const char *arg = luaL_checkstring(L, 1);
+	char *end;
+	float f = strtof(arg, &end);
+	if (*end != '\0')
+		lua_pushnil(L);
+	else
+		lua_pushnumber(L, FLOAT_TO_FIXED(f));
+	return 1;
+}
+
 // M_MENU
 //////////////
 
@@ -4333,6 +4345,7 @@ static luaL_Reg lib[] = {
 	{"userdataMetatable", lib_userdataMetatable},
 	{"IsPlayerAdmin", lib_isPlayerAdmin},
 	{"reserveLuabanks", lib_reserveLuabanks},
+	{"tofixed", lib_tofixed},
 
 	// m_menu
 	{"M_MoveColorAfter",lib_pMoveColorAfter},