C++ reading array of strings from lua

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C++ reading array of strings from lua

Postby werdo659 on Tue Feb 19, 2013 10:08 am

Hey guys I've made a few SDL games now and want to release one to the community, but I need to have the maps load from files so i don't have to recompile every time I change the map it's really annoying another problem is it used to be in all C++/SDL but I want it to have lua implementation now and, allow the community to have tons of mods and maps the players can make and share but I haven't done much in lua yet and i ran into a problem :oops: I'm doing the file reading for my map in lua and C++ isn't reading the table that the location of the tile image is in. here's the code

Tile = {}

--opens file and reads it
local file = io.open("../Maps/Map.txt")
local n = 0
while(n <= 494) do
Tile[n] = file:read(1)
n = n+1
--end of reading file

n = 0
local x = 0

-- creates a new array for the tiles
whatsTile = {}
isSolid = {}

--sets the tiles to their specific image
while(n <= 494) do
if(Tile[n] ~= "\n" and Tile[n] ~= "\r") then
if(Tile[n] == '0') then
--Note it must be a bmp or sdl will not support the image. Also note each tile is 32x32 this is not changeable
whatsTile[x] = "../GameResources/Pictures/Tile1.bmp"
--sets this tile to non solid
isSolid[x] = 0
--You can add new tiles just set their number and, add a directory for the Bitmap image.
--Make sure you set the directory based on where the executable file is, not this script.
x = x+1
n = n+1

#include <SDL/SDL.h>
#include <string>
#include <iostream>
#include <lua.hpp>
#include <fstream>

using namespace std;

extern "C"{
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include <luaconf.h>

void loadMapLua();

string whatsTile[475];

int main(int argc, char** argv){

ofstream myfile;


SDL_Event event;


SDL_Surface* Screen = SDL_SetVideoMode(800, 608, 32, SDL_SWSURFACE);
SDL_Surface* BackGround = SDL_LoadBMP("../GameResources/Pictures/BackGround.bmp");
SDL_Surface* Tiles[475];

const char* c;

SDL_Rect Tile[475];

int n = 0;

while(n < 475){
c = whatsTile[n].c_str();
Tiles[n] = SDL_LoadBMP(c);
Tile[n].w = 32;
Tile[n].h = 32;
Tile[n].x = n*32;
Tile[n].y = (n/25)*32;
n ++;

n = 0;

myfile << whatsTile[0] << endl;
bool gameRunning = true;

if(event.type == SDL_QUIT){
gameRunning = false;

SDL_FillRect(Screen, 0, SDL_MapRGB(Screen->format, 255, 255, 255));
SDL_BlitSurface(BackGround, NULL, Screen, NULL);

while(n < 475){
SDL_BlitSurface(Tiles[n], NULL, Screen, &Tile[n]);
n ++;

return 0;

void loadMapLua(){
lua_State* Map = lua_open();
luaL_dofile(Map, "../GameResources/LuaScripts/Map.lua");
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