Thread: KeyListener - how to make program react to the key that was pressed twice?

So, shortly...

My mini game:
When I press a 'Space bar' key - the first ball (A) stops moving, and the second ball (B) starts moving.
The problem: How to make the second ball (B) stop moving with a same (Space bar) key?
What i need: 1st time 'Space bar' pressed - first ball stops. 2nd time 'Space bar' pressed - second ball stops.

How to do that?

I manage to make them both stop if i set that balls stop moving after different keys pressed. But I don't need that.

public void run() {
		while(running){
			if(BallA.ballMoves)
				BallA.move();
			if(!BallA.ballMoves){
				BallB.move();
}
 
@Override
	public void keyPressed(KeyEvent e) {
 
		if(e.getKeyCode() == KeyEvent.VK_SPACE){
			BallA.ballMoves = false;
		}

Sorry, if I'm writing in a wrong sub-forum...

Originally Posted by Norm

You need a way to keep track of the state of the key presses. Assign a different value to a variable for each state: No presses, one press, two presses, ????
How many states are there? Is there a 'three pressed' state or does the state restart at No presses?

no presses - first ball moves.
one press - first ball stops, second ball starts to move.
two presses - second ball stops (both are not moving).

Then some small action happens in the game and the thing with a 'space bar' key should restart.

I'm making a small basketball shooting game.
1st thing what I need is to set shot's accuracy. So there is a cross on which one ball is moving up and down, the other ball moves - left and right. I'm trying to stop them both with 'space bar' key.
Untitled-1.png

When both balls will be stopped, shot's accuracy will be calculated and the shot will happen. After the first shot, I will need to set an accuracy for the second shot and so on and on.

I hope you understand what I'm trying to say.
Sorry for my bad english....