TextureRegion in ArrayList Won't draw to screen

0
votes

I'm having some issues drawing TextureRegions with a spriteBatch in LibGDX.

So I have a main class that hosts the game logic. In the constructor, I have:

atlas = new TextureAtlas(Gdx.files.internal("sheet.txt") );
this.loadTileGFX();

the loadTileGFX() method does this:

roseFrames = new ArrayList<AtlasRegion>();

roseFrames.add(atlas.findRegion("Dirt", 0));
roseFrames.add(atlas.findRegion("Dirt", 1));
roseFrames.add(atlas.findRegion("Dirt", 2));
roseFrames.add(atlas.findRegion("Dirt", 3));

Then I pass the arrayList of AtlasRegions into the object:

///in the main class
rsoe = new RoseSquare(roseFrames, st, col, row, tileWidth);

//in the constructor for the object to draw
this.textureRegions = roseFrames;

Then every render() loop I call:

batch.begin();
rose.draw(batch);
batch.end()

The rose.draw() method looks like this:

public void draw(SpriteBatch batch){
    batch.draw(this.textureRegions.get(1), rect.x, rect.y, rect.width, rect.height);
}

But the thing is, this doesn't draw anything to the screen.

BUT HERE'S THE THING. If I change the code to be:

 public void draw(SpriteBatch batch){
    batch.draw(new TextureAtlas(Gdx.files.internal("sheet.txt")).findRegion("Dirt", 0)), rect.x, rect.y, rect.width, rect.height);
}

Then it draws correctly. Can anybody shed some light on what error I might have? Keep in ming I don't get any errors with the "nothing drawn" code. Also, I can trace the details of this.textureRegions.get(1), and they all are correct....

Thanks.

2
libgdx
In first aproach you are rendering AtlasRegion in second one TextureRegion. Im not sure those are the same. Huh? – Veljko
This is probably the problem, but you draw second texture in your first code (at index 1), but first texture in your second code (at index 0). Also @Veljko AtlasRegion extends TextureRegion – kajacx
No, sorry, that's not the issue, I have tried different indices.....hmmmm. – drew tenenbaum

2 Answers

0
votes

If you need to draw an array of something that has textures you can do like this: 

batch.begin();
for (Ground ground : groundArray){
    batch.draw(ground.getTextureRegion(), ground.x, ground.y);
}
batch.end();

As you see i am drawing the TextureRegion here.

You can check related classes and other information in my answers HERE and HERE

Answering drew's comment:

public TextureRegion customGetTextureRegion(int i){
    switch(i){
    case 1:  return atlas.findRegion("dirt1"); break;
    case 2:  return atlas.findRegion("dirt2"); break;
    case 3:  return atlas.findRegion("dirt3"); break;
    }
}
0
votes

I have found a solution to my own problem.

I was also drawing some debug ShapeRenderer stuff.

The issue seemed to be that libGDX didn't like a SpriteBatch and a ShapeRenderer to be "on" at the same time:

//LibGDX Doesn't like this:
spriteBatch.begin();

shapeRenderer.begin(ShapeType.Line);
shapeRenderer.drawRect(x, y, width, height);
shapeRenderer.end();

sprtieBatch.draw(texRegion, x, y, width, height);
spriteBatch.end();

It prefers:

//LibGDX likes this:
shapeRenderer.begin(ShapeType.Line);
shapeRenderer.drawRect(x, y, width, height);
shapeRenderer.end();


spriteBatch.begin();
sprtieBatch.draw(texRegion, x, y, width, height);
spriteBatch.end();

Thanks for your responses everyone.