I have a CCSpriteSheet and a CCSpriteBatchNode animating from a .png and .plist files running perfectly, but, is there any way to know in which frame is the anymation in order to launch another CCAction??
For example, I have a CCAnimation with 30 frames and I want animate another sprite when the animation is in frame 15. Is this possible??
Thanks in advance.
Split the animation up into parts and use a CCSequence. For example:
CCAction *Action = [CCSequence actions:
[CCAnimate actionWithAnimation:myCCanimationPart1],
[CCCallBlock actionWithBlock:^
{
[myOtherSprite runAction:(otherAnimationAction)];
}],
[CCAnimate actionWithAnimation:myCCanimationPart2],
nil];
I typically fulfill this kind of need with something like this code fragment from one of my games :
float stall;
CCAnimation *secondAnim;
CCSprite *secondSprite;
NSString *dyingFx;
id sound = (self.alive ? [GENoopAction action] :
[GEPlayFx actionWithSoundFile:dyingFx]
);
id second = [CCSequence actions:
[CCDelayTime actionWithDuration:stall]
, [CCShow action]
, sound
, [CCAnimate actionWithAnimation:secondAnim]
, [CCCallFunc actionWithTarget:self selector:#selector(hurtComplete)]
];
secondSprite.visible= NO;
[secondSprite runAction:second];
GEPlayFx and GENoopAction are toys i created for myself (CCActionInstant implementations).
Related
i'm newbie to both cocos2d and box2d and i've been struggling for two days with this problem : i have a scene with many sprites dropping down (with bodies attached to them). and i have a BackgroundLayer from which i add my background image into the scene (which is not involded into the physics simulation). In my backgroundLayer i'm trying to perform an action on a sprite :
(it blink in the first position and jump directly to the end position )
id flyBubble = [CCEaseInOut actionWithAction:[CCMoveTo actionWithDuration:0.7 position:randomEndPosition]];
but my sprite doesn't respond at all to this action!! my sprite doesn't have any b2body attached and seems like it respond to the tick: method of the physics world (which is in my Main Scene). How can i perform an action to a sprite that doesn't have a b2body attached.
any help would be appreciated!!! thanks
here is the entire code :
CCSprite *bubble = [CCSprite spriteWithFile:#"bubble.png"];
[self addChild:bubble];
CGPoint startPosition = ccp(100, 100);
bubble.position = startPosition;
CGPoint endPosition = ccp(400, 400);
id flyBubble = [CCEaseInOut actionWithAction:[CCMoveTo actionWithDuration:0.7 position:randomEndPosition]];
id remove = [CCCallBlockN actionWithBlock:^(CCNode *node) {
[self removeFruit:(CCSprite *)node];
}];
[bubble runAction:[CCSequence actions:flyBubble, remove, nil]];
I guess source and destination position of sprite is same. So no difference in action.
try like this..
sprite.position = ccp(0,0);
id flyBubble = [CCMoveTo actionWithDuration:0.7 position:randomEndPosition];
[sprite runAction:flyBubble];
i did a little mistake that costs me lot of times. it was in this line of code
id flyBubble = [CCEaseInOut actionWithAction:[CCMoveTo actionWithDuration:0.7 position:randomEndPosition]];
CCEaseInOut doesn't work i don't know why!! when i used CCEaseExponentialInOut it worked perfectly.
Thanks anyway!
I've got a problem in my current game.
I'm trying to move a sprite based on the movement of a other physic body, for a map. This is my code:
...
NSMutableArray *mapObjetcs = [[[NSMutableArray alloc]init]autorelease];
[mapObjetcs addObject:swordman];
[mapObjetcs addObject:icon];
CCCallFuncND* iconMap = [CCCallFuncND actionWithTarget:self selector:#selector(mapLoc:mapObj:) data:mapObjetcs];
CCSequence* iconMapSequence = [CCSequence actions:[CCDelayTime actionWithDuration:1.0f/60.0f], iconMap, nil];;
CCRepeatForever* iconRef = [CCRepeatForever actionWithAction:iconMapSequence];
[self runAction:iconRef];
}
-(void) mapLoc:(ccTime)delta mapObj:(NSMutableArray*)mapObj
{
GB2Sprite *swordmanTemp = (GB2Sprite*)[mapObj objectAtIndex:0];
CCSprite *iconTemp = (CCSprite*)[mapObj objectAtIndex:1];
CGPoint swordmanPos = [swordmanTemp ccPosition];
float pos = (swordmanPos.x/convFactor)+65;
iconTemp.position = ccp(pos, 290);
}
Every time i run the code with the CCRepeatForever the games freezes, if i run the code without the CCRepeatForever the game run grat but dont refresh the icon in map.
Can anybody help me??? Thanks
Its a problem with running CCRepeatForever on layer itself.. Ofcourse it will freeze the game.. You can try for alternate solution I guess.. Instead of using a separate CCRepeatForever loop, use the update method of your layer.. As its already doing same thing that you want to do with your own action..
Another solution is make a same CCRepeatForever for your icon sprite.. and in its CCCallFuncND take the position of other object....
Hope this helps.. Try yourself.. If it doesn't work.. I'll try 2 give you code... Don't run CCRepeatForever Loop on your layer itself.. :)
To avoud such actions you can simply schedule some method with needed interval. smth like
[self schedule: #selector(methodToBeCalled) interval: intervalInSeconds];
just don't forget to unschedule it later
I have a CCSprite called sprite that is a child of a CCLayer called movingLayer that is itself a child of the current CCLayer running my game logic, so it is self in this case. movingLayer is moving back and forth across the screen in a repeat forever action and sprite is riding along on it. I want to get sprite to "get off" of movingLayer and "get on" to self where it can do some actions of its own.
When I try to do this, I need to tell movingLayer to remove sprite and self to add sprite. This is what I did...
- (void)attack:(id)sender
{
[sprite stopAllActions];
[movingLayer removeChild:sprite cleanup:YES];
[self addChild:sprite z:1];
CGFloat distance = ccpDistance(sprite.position, ccp(sprite.position.x, -sprite.contentSize.height/2));
id goDown = [CCMoveTo actionWithDuration:distance/moveDuration position:ccp(sprite.position.x, -sprite.contentSize.height/2)];
id repeatDown = [CCRepeatForever actionWithAction:[CCSequence actions:[CCMoveTo actionWithDuration:0 position:ccp(sprite.position.x, sprite.contentSize.height/2+self.contentSize.height)], [CCMoveTo actionWithDuration:moveDuration position:ccp(sprite.position.x, -sprite.contentSize.height/2)], nil]];
id attackAction = [CCSequence actions:goDown, repeatDown, nil];
[sprite runAction:attackAction];
}
I think stopAllActions is redundant, but that's not the problem. If I remove sprite from movingLayer before adding it to self I crash for accessing a zombie, and if I try to add it to self first, I crash for trying to add something already added.
Have you tried setting cleanup to NO?
Alternatively, try to retain sprite before you remove it from movingLayer, then release it when you're done with it:
[sprite retain];
[movingLayer removeChild:sprite cleanup:YES];
[self addChild:sprite z:1];
[sprite release];
I have 3 question.
How to keep fps rate constant(almost) in cocos2d.When lots of CCSprite created and removed within a small interval like (5-8) per second is it possible to keep frame rate lmost constant??
Is [self removeChild:sprite cleanup:YES] is enough or I should also use
CCTexture2D *texture = [sprite texture]; [[CCTextureCache sharedTextureCache] removeTexture: texture];
The following Part of code is responsible for my frame drop.How to accomplish same task in better way?
id fadeout = [CCFadeOut actionWithDuration:1.4f];
id call = [CCCallFunc actionWithTarget:self
selector:#selector(RemoveSmashedSprite:)];
CCSequence* sequence= [CCSequence
actions:fadeout, call, nil];
[smash runAction:sequence];
... and...
> -(void)RemoveSmashedSprite:(id)sender
{
CCSprite *sp = (CCSprite *)sender;
[self removeChild:sp cleanup:YES];
}
This is called 5-8 times per second. So the frame rate goes down. Can any one help me?
You shouldn't remove textures if you're going to reuse them in the short term. It would only benefit memory while having a great drawback in performance.
To maintain a constant frame rate you could try reusing the sprites instead of creating and removing them. Instead of calling removeChild you could set visible = NO and add it to an array of unused sprites. Then when you need a new of these sprites you check if there is any in that unused array and only create a new one if it's empty. This way you would minimize the amount of sprites created and destroyed.
Change this:
id call = [CCCallFunc actionWithTarget:self selector:#selector(RemoveSmashedSprite:)];
Into this:
id call = [CCCallFuncN actionWithTarget:self selector:#selector(RemoveSmashedSprite:)];
You can use remove action as your last action, instead of CCCallFunc.
id action = [CCActionRemove action];
This action will remove the node running this action from its parent
i am spending a lot for my time for a simple things i think.I want to hide and show a sprite
in scene.
myS = [CCSprite spriteWithFile:#"Background_Pause_pad.png"];
[myS setPosition:ccp(384,470)];
myS.opacity = 0;
[self addChild:myS z:1];
and when i need to appear it..
[myS runAction:[CCFadeIn actionWithDuration:1]];
and hide it
[myS runAction:[CCFadeOut actionWithDuration:1]];
but it does not work.....can anyone plz help??
Why do you use a Sequence for one action ?
You have to choose the animation you want !
E.g : if you choose CCFadeIn
[mySprite runAction:[CCFadeIn actionWithDuration:0.5f]];
I think you can try the below stuff of the code. It would work for you
id action1 = [CCFadeIn actionWithDuration:1];
id action2 = [CCDelayTime actionWithDuration:1];
id action3 = [CCFadeOut actionWithDuration:1];
[myS runAction:[CCSequence actions:action1,action2,action3,nil]];
As you need the fadein fadeout action it would generate it and display the Same.