need some 2d advice

[Halan]

hey,

im building a little 2d engine on top of sdl as it is quite simple...

but my problem or question is: does anybody know where i can find a site or whatever containing an explanation how to save maps in the memory so that its easy accessable and doesn not need that much memory also i would be happy about some general pixel design pages

thanks,
Halan

[Nodtveidt]

For tile-based 2D games, the easiest and most efficient way is to simply use an array. For example:

Code: Select all

char cMapArray[100][100];

It isn't the most memory-friendly method, but it is very efficient and easy to work with. That should get you started in the right direction.

For pixel design in general, I'd recommend Tsugumo's tutorials. google the name, you should be able to find something.

[messen]

Hi!

In my 2d tiled game i use a procedural generated - modified perlin noise - level map and i just store the visible part and the story depended part of the level. I use this site to learn perlin.

[zenaku]

Code: Select all

class CTile
{
    public:
     Bitmap *Pic;

    void Load(char *filename)
    {
         Pic = LoadBitmap(filename);
    }

};

CTile *Tiles = new CTile[10];
...
CTile **Map = new CTile *[100 * 100];


for(int x = 0;x<100;x++)
   for(int y = 0;y<100;y++)
      Map[y * 100 + x] = &Tiles[0];    //Set all tiles in the map to the first tile

The Map is made up of only pointers, so the memory usage is x*y*sizeof(CTile *) which is 4 bytes on 32 bit systems. A 100 x 100 map is about 40k of ram.