android - How do I detect if a sprite was touched in Java libGDX?

Question

In the past few days I've been porting my game (Apopalypse) to the Android Mobile platform. I've did a quick search on Google of sprite touch detection but didn't find anything helpful. Each balloon will pop once touched and I just need to detect if it's touched. Here's my balloon spawning code:

Rendering (x, y, width, and height are randomized):

public void render() {
    y += 2;
    balloon.setX(x);
    balloon.setY(y);
    balloon.setSize(width, height);
    batch.begin();
    balloon.draw(batch);
    batch.end();
}

Spawning in main game class:

addBalloon(new Balloon());

public static void addBalloon(Balloon b) {
    balloons.add(b);
}

Answer 1

in your class having the render method use can do following code:

Vector3 touchPoint=new Vector3();

void update()
{
  if(Gdx.input.justTouched())
   {
    //unprojects the camera
    camera.unproject(touchPoint.set(Gdx.input.getX(),Gdx.input.getY(),0));
    if(balloon.getBoundingRectangles().contains(touchPoint.x,touchPoint.y))
     {
      // will be here when balloon will be touched
     }
    }
   }