Hello,

Making a new shooter game here in the vein of "Galaga" (my fav shooter game growing up).

Here's the code I have for bullet physics:

-(IBAction)shootBullet:(id)sender{
imgBullet.hidden = NO;
timer = [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(fireBullet) userInfo:Nil repeats:YES];
}

-(void)fireBullet{
imgBullet.center = CGPointMake(imgBullet.center.x + bulletVelocity.x , imgBullet.center.y + bulletVelocity.y);
if(imgBullet.center.y <= 0){
 imgBullet.hidden = YES;
 imgBullet.center = self.view.center;
 [timer invalidate];
}
}

Anyway, the obvious issue is that once the bullet leaves the screen, its center is being reset, so I'm reusing the same bullet for each press of the "fire" button.

Ideally, I would like the user to be able to spam the "fire" button without causing the program to crash. How would I tinker this existing code so that a bullet object would spawn on the button press each time, and then despawn after it exits the screen, or collides with an enemy?

Thank you for any assistance you can offer!