cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   AkumaStreak
   Member

   Hi Guys,

   I have one bug remaining in my game. Every now and then the main button I use to fire a laser sticks (stays stuck on) even after moving my finger off of it or removing my finger from the screen. This is a graphic/using targeted touches, not anything to do with the cocos2d menu code.

   Here's how I do things:

   @implementation BoostButton
   
   @synthesize radius = _radius;
   @synthesize isPressed = _isPressed;
   @synthesize availableBoost = _availableBoost;
   @synthesize boostDuration = _boostDuration;
   
   -(void)onEnter
   {
   	[super onEnter];
   
   	_radius = self.contentSize.width / 2.0f;
   	_isPressed = NO;
   	_availableBoost = 0.0f;
   	_boostDuration = 0.0f;
   
   	[[TouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];
   }
   
   -(void)onExit
   {
   	[[TouchDispatcher sharedDispatcher] removeDelegate:self];
   
   	[super onExit];
   }
   
   -(BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
   {
   	InGameLayer *pGameLayer = ((InGameMode *)([ModeManager instance].pCurrMode)).pInGameLayer;
   	cpVect cpvTouchPt = [[Director sharedDirector] convertToGL:[touch locationInView:[touch view]]];
   	if (ccpDistance([self position], cpvTouchPt) <= _radius)
   	{
   		if ((_availableBoost == 0.0f) || [pGameLayer tiltInteractionEnabled])
   		{
   			[[SimpleAudioEngine sharedEngine] playEffect:@"Assets/Audio/BoostCannonCannotFire.caf"];
   		}
   
   		_isPressed = YES;
   		return YES;
   	}
   
   	return NO;
   }
   
   -(void)ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event
   {
   	cpVect cpvTouchPt = [[Director sharedDirector] convertToGL:[touch locationInView:[touch view]]];
   	if (ccpDistance([self position], cpvTouchPt) > [self radius])
   	{
   		_isPressed = NO;
   	}
   }
   
   -(void)ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event
   {
   	_isPressed = NO;
   }
   
   -(void)ccTouchCancelled:(UITouch *)touch withEvent:(UIEvent *)event
   {
   	_isPressed = NO;
   }
   
   @end

   I am sure that the way I use the isPressed property in the rest of my code is ok. Any ideas? My other game code simply does something like this:

   if ([_pBoostButton isPressed] && ([_pBoostButton availableBoost] > 0.0f) && !_tiltInteractionEnabled && !_gameHasEnded)
   {
   	turnLaserOnIfIt'sNotOnAlready
   }
   else
   {
   	turnLaserOffIfIt'sNotOffAlready
   }

   Thanks For Your Thoughts,
   Jason

   Posted 2 years ago #
2. 

   AkumaStreak
   Member

   And I should clarify -- the button does not stay stuck once I press it and release again. But when this happens it can pretty much wreck the current game (button pressing timing is critical).

   Posted 2 years ago #
3. 

   Steve Oldmeadow
   Administrator

   There is a known issue on iDevices where touchEnded events are sometimes missed. See this thread:

   http://www.cocos2d-iphone.org/forum/topic/2500

   Posted 2 years ago #
4. 

   AkumaStreak
   Member

   Nice, thanks Steve! I will try reducing accelerometer demands as suggested in the other threads.

   Posted 2 years ago #

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