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I am trying to create a custom scene transition that will simulate the opening of a book cover. The out-going scene must flip open to the left (hinged on the left edge of the screen) and display the in-coming scene as if it where the first page of the book.
I started playing with code based on CCTransitionFlipX.
I think it is going to take me a while to figure out, and was hoping someone might be able to give me some advice or clues on how to implement this type of transition.
I was able to create a subclass of CCTransitionSceneOriented the performs a simple, book cover transition. If the transition is not too slow, it looks good.
@implementation TransitionBookCover
-(void) onEnter
{
[super onEnter];
[inScene_ setVisible:NO];
id outCameraAct = [CCOrbitCamera actionWithDuration:duration_/2 radius:1 deltaRadius:0 angleZ:180 deltaAngleZ:65 angleX:0 deltaAngleX:0];
id outHideAct = [CCHide action];
id outGroupAct1 = [CCSequence actions:outCameraAct, outHideAct, nil];
id outMoveAct = [CCMoveTo actionWithDuration:duration_/4 position:ccp(-384.0,0.0)];
id outGroupAct2 = [CCSpawn actions:outMoveAct, outGroupAct1, nil];
id inDelayAct = [CCDelayTime actionWithDuration:duration_/2];
id inFadeAct = [CCShow action];
id inGroupAct = [CCSequence actions:inDelayAct, inFadeAct, nil];
[outScene_ runAction:outGroupAct2];
[inScene_ runAction:inGroupAct];
}
@endI was missing a call to finish during the in-coming scene's actions.
Unfortunately this transition is not professional looking because the in-coming scene is not incrementally displayed as the cover is opened :-(
@implementation TransitionBookCover
-(void) onEnter
{
[super onEnter];
[inScene_ setVisible:NO];
id outCameraAct = [CCOrbitCamera actionWithDuration:duration_/2 radius:1 deltaRadius:0 angleZ:180 deltaAngleZ:65 angleX:0 deltaAngleX:0];
id outHideAct = [CCHide action];
id outDelayAct = [CCDelayTime actionWithDuration:duration_/2];
id outGroupAct1 = [CCSequence actions:outCameraAct, outHideAct, outDelayAct, nil];
id outMoveAct = [CCMoveTo actionWithDuration:duration_/4 position:ccp(-384.0,0.0)];
id outGroupAct2 = [CCSpawn actions:outMoveAct, outGroupAct1, nil];
id inDelayAct = [CCDelayTime actionWithDuration:duration_/2];
id inShowAct = [CCShow action];
id inFuncAct = [CCCallFunc actionWithTarget:self selector:@selector(finish)];
id inGroupAct = [CCSequence actions:inDelayAct, inShowAct, inFuncAct, nil];
[outScene_ runAction:outGroupAct2];
[inScene_ runAction:inGroupAct];
}
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