Libgdx Creating fast maps without TiledMap

Question

i am trying to make A game like Minecraft (in 2D). I dont wanna use TiledMap, becouse it cant (ive didnt found a way how) generate random maps.

My Test & code:

public class game implements ApplicationListener {
    private OrthographicCamera camera;
    private SpriteBatch batch;

    private Sprite block[] = new Sprite[26];
    private int createdBlocks = 0;
    private int line = 0;
    @Override
    public void create() {      
        float w = Gdx.graphics.getWidth();
        float h = Gdx.graphics.getHeight();

        camera = new OrthographicCamera(w, h);
        batch = new SpriteBatch();

        camera.position.x = 480;
        camera.position.y = 320;
        camera.update();

        graphics.create();
        player.create();
    }

    @Override
    public void dispose() {
        batch.dispose();
    }

    @Override
    public void render() {
        for(int i=0; i<=25;i++){        
            block[i] = new Sprite(graphics.stone);
            if(i==5 || i==10 || i==15 || i==20)
            line++;
            int i2 = i;
            if(i > 5)
            i = 0;
            block[i].setPosition(i2 * 32, line * 32);
        }
        Gdx.gl.glClearColor(1, 1, 1, 1);
        Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

        batch.setProjectionMatrix(camera.combined);
        batch.begin();
        player.render(batch);
        for(int i=0; i<=100;i++)
        block[i].draw(batch);
        batch.end();
    }

    @Override
    public void resize(int width, int height) {
    }

    @Override
    public void pause() {
    }

    @Override
    public void resume() {
    }
}

its just lagging, slow (loading) and not usefull.

is there a better way?

Answer 1

About your code:

You create lots of new sprites every frame (your loop inside render() method). You should create your sprites in other place, probably in create() method.

About creating map without TiledMap:

You can use SpriteCache instead SpriteBatch for building tile based terrain. You can take a look at example of using SpriteCache here

About random generation of TiledMap

.tmx file - is just XML structured file. You can generate it in code as you want with any XML parser, that's why creating a random TiledMap is not a problem. Here is some basic instructions:

1. Create tile sets for your random maps.
2. Create an example map with this sets in tmx editor.
3. Open it with any text editor and a take a look at file structure.
4. Generate a similar file in code with any XML parser (you can use libgdx built in parser )

PS I don't recommend you to develop your own solution for 2D maps, in 90% of cases tmx is more than enough for creating 2D maps. You also already have optimized tmx render class inside libgdx.