Greenfoot

NUKES

2022/2/3

#

So I made a Method in my Shooter Class which adds a new object when Space is Pressed, but it creates a whole lot of bullets. I only want 1 bullet to be shot when Spacebar is pressed, but I am not sure how I can make that happen.

public void shoot()
    {
     getWorld().addObject(new bullet(), getX(), getY()); 
    }

and then further down on the class:

if (Greenfoot.isKeyDown("space"))
            {
          shoot();
         }

danpost

2022/2/3

#

NUKES wrote...

So I made a Method in my Shooter Class which adds a new object when Space is Pressed, but it creates a whole lot of bullets. I only want 1 bullet to be shot when Spacebar is pressed, but I am not sure how I can make that happen.

Add a boolean to track the state of the space bar:

private boolean spaceKeyDown;

// action code
if (spaceKeyDown != Greenfoot.isKeyDown("space")) // detect change in state of space key
{
    spaceKeyDown = ! spaceKeyDown; // tracking state of space key
    if (spaceKeyDown) shoot();
}

NUKES

2022/2/3

#

works perfectly, thank you very much!

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how do I make it so I only shoot 1 bullet when space is pressed?