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POIn cocos2d how do you implement a touch hash code and reference it later?
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copied!<p>How do you implement a touch hash code and reference it later? I have read about a "hash" code, but I don't understand how to use it. I want to know when two of my Sprites are touched at the same time, like as if pressing a chord on two keys of a piano.</p> <p>Here is an example of what I have for my ccTouchesBegan:</p> <pre><code>- (void) ccTouchesBegan:(NSSet*)touches withEvent:(UIEvent*)event { NSSet *allTouches = [event allTouches]; int validTouchCount = 0; for (UITouch* touch in allTouches) { BOOL touchIsValid = FALSE; CGPoint location = [touch locationInView: [touch view]]; CGPoint convertedLocation = [[CCDirector sharedDirector] convertToGL:location]; if (CGRectContainsPoint(_fourButtonsRect, convertedLocation)) { NSLog(@"Touch is within four buttons"); touchIsValid = TRUE; } _playerDidAction = 0; NSLog(@"before the loop"); if (touchIsValid) { validTouchCount++; NSLog(@"Within ValidTouches loop"); CGPoint validLocation = [touch locationInView: [touch view]]; CGPoint convertedValidLocation = [[CCDirector sharedDirector] convertToGL:validLocation]; if (CGRectContainsPoint(_redButtonSprite.boundingBox, convertedValidLocation)) { _redButtonStatus = TRUE; [_redButtonSprite setTexture:_redButtonLit]; if (validTouchCount == 1) { _playerDidAction = 1; } } else if (CGRectContainsPoint(_blueButtonSprite.boundingBox, convertedValidLocation)) { _blueButtonStatus = TRUE; [_blueButtonSprite setTexture:_blueButtonLit]; if (validTouchCount == 1) { _playerDidAction = 2; } } else if (CGRectContainsPoint(_greenButtonSprite.boundingBox, convertedValidLocation)) { _greenButtonStatus = TRUE; [_greenButtonSprite setTexture:_greenButtonLit]; if (validTouchCount == 1) { _playerDidAction = 3; } } else if (CGRectContainsPoint(_yellowButtonSprite.boundingBox, convertedValidLocation)) { _yellowButtonStatus = TRUE; [_yellowButtonSprite setTexture:_yellowButtonLit]; if (validTouchCount == 1) { _playerDidAction = 4; } } if (validTouchCount > 1) { if (_redButtonStatus && _blueButtonStatus) { _comboRB = TRUE; _playerDidAction = 5; } else if (_redButtonStatus && _greenButtonStatus) { _comboRG = TRUE; _playerDidAction = 6; } else if (_redButtonStatus && _yellowButtonStatus) { _comboRY = TRUE; _playerDidAction = 7; } else if (_blueButtonStatus && _greenButtonStatus) { _comboBG = TRUE; _playerDidAction = 8; } else if (_blueButtonStatus && _yellowButtonStatus) { _comboBY = TRUE; _playerDidAction = 9; } else if (_greenButtonStatus && _yellowButtonStatus) { _comboGY = TRUE; _playerDidAction = 10; } } } } } </code></pre> <p>And here is the beginning of my ccTouchesEnded:</p> <pre><code>- (void)ccTouchesEnded:(NSSet*)touches withEvent:(UIEvent*)event { for (UITouch *touch in touches) { CGPoint location = [touch locationInView: [touch view]]; CGPoint convertedLocation = [[CCDirector sharedDirector] convertToGL:location]; if (CGRectContainsPoint(_redButtonSprite.boundingBox, convertedLocation)) { _redButtonStatus = FALSE; [_redButtonSprite setTexture:_redButtonNormal]; } if (CGRectContainsPoint(_blueButtonSprite.boundingBox, convertedLocation)) { _blueButtonStatus = FALSE; [_blueButtonSprite setTexture:_blueButtonNormal]; } if (CGRectContainsPoint(_greenButtonSprite.boundingBox, convertedLocation)) { _greenButtonStatus = FALSE; [_greenButtonSprite setTexture:_greenButtonNormal]; } if (CGRectContainsPoint(_yellowButtonSprite.boundingBox, convertedLocation)) { _yellowButtonStatus = FALSE; [_yellowButtonSprite setTexture:_yellowButtonNormal]; } } } </code></pre> <p>Could you maybe give me an example of how you would capture touches that began on a sprite and ended on a sprite? I have been struggling and can't get the hash code to work - just not understanding how the hash code can be used to reference a touch later. I guess what I'm trying to make would be called a hash tracker?</p> <p>I am sure there is a much less convoluted way to do it using the hash codes and less state variables. I haven't fleshed out the ccTouchesEnded method with the other state variable effects because I was hoping to find a simpler way (I know I still need to make the ccTouchesMoved and Canceled methods too).</p> <p>Any advise would be very appreciated!</p>

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