var tileWidth; tileWidth = 16;
var tileHeight; tileHeight = 16;
var grid; grid = ds_grid_create(room_width/tileWidth,room_height/tileHeight  )
var map; map = ds_map_create();
//Make sure to add you objects here and their character equivalent.
//ds_map_add(map,object0,'a')
ds_map_add(map,BrickWall,'2')
ds_map_add(map,BlueWall,'3')
ds_map_add(map,TileWall,'4')
ds_map_add(map,RockWall,'10')



ds_grid_set_region(grid,0,0,room_width/tileWidth,room_height/tileHeight,'12');
with(all)
{

    if(id <> other.id)
    {
         var char; char = ds_map_find_value(map,object_index)
         if( string(char) = '2')
         {
             char = string(choose(1,1,1,1,1,1,1,1,2,3));
         }
         else if ( string(char) = '3' )
         {
            char = string(choose(4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,6));
         }
         else if ( string(char) = '4')
         {
            char = string(choose(7,7,7,7,7,7,7,8,9));
         }
         ds_grid_set(grid, floor(x/tileWidth),floor(y/tileHeight),char);
    }
}

var f; f = file_text_open_append("levels.txt");
file_text_write_string(f,'"');
var xx,yy;
xx = 0;
yy = 0;
repeat(ds_grid_height(grid))
{
repeat(ds_grid_width(grid))
{
file_text_write_string(f,ds_grid_get(grid,xx,yy));
if( (xx + 1) < ds_grid_width(grid))
{
   file_text_write_string(f,',');
}
xx+=1;
}
file_text_write_string(f,'\n');

xx = 0;
yy+=1;
}

file_text_write_string(f,'",');
file_text_close(f)