A fast, easy to use, free, and community supported 2D game engine
VTX
Member
Hi,
Im new around here, building my current game with cocos2d, which is really really great!
I currently got a problem:
I have a 'menu scene' with multiple layers. On the main menu I have 1 button that is animated with repeatForever. When I switchs layers, and get back to the main menu the animation on that button is lost?
Is there something that I forget?
Thanks!
Hi VTX, welcome to Cocos2D!
It's kind of hard to understand your problem without seeing some code examples. put your code examples between backticks to make it readable in the forum backticks make it look like this. The backtick " ` " is the key located with tilde "~" above it (well, at least on my macbook pro).
VTX
Member
Thanks for your reply David.
I use a menu scene with multiple layers. In the one layer I execute this code:
// Load animation
// loads the sprite frames from a Zwoptex generated file
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"menuAnimation.plist"];
NSMutableArray *animFrames = [NSMutableArray array];
for(int i = 0; i < 21; i++) {
CCSpriteFrame *frame = [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:@"Faster_Menu%i.png",i]];
[animFrames addObject:frame];
}
CCAnimation *animation = [CCAnimation animationWithName:@"dance" delay:0.07f frames:animFrames];
CCSprite *logo = [CCSprite spriteWithSpriteFrameName:@"Faster_Menu0.png"];
id action = [CCAnimate actionWithAnimation: animation];
id delay = [CCDelayTime actionWithDuration:3.5f];
id repeating = [CCRepeatForever actionWithAction:[CCSequence actions:delay,action,nil]];
logo.position = ccp(160,242);
[self addChild:logo z:2];
[logo runAction:repeating];When I now switch to a different layer like this for example:
[(CCMultiplexLayer *)parent_ switchTo:1];
And then switch back to Layer 0 (where the animation should be playing), the animation is stopped.
Do you need more info?
Thanks!
I haven't used CCMultiplexLayer before so I am not familar with it's behavior. It appears to just be a subclass of CCLayer which allows you to switch from one to the next as you have used it. Now as for why your animation is not working-- where are you initializing your animation action (in the init method or some other method)? What happens when CCMultiplexLayer's swichTo method is called? Does it reinit the layer. What happens to the layer that is previously running? Can you trace any of this with NSLog calls?
I'm guessig that Cocos stops the running actions when you switch layers.
Here is the -(void)switchTo method from CCLayer.M:
-(void) switchTo: (unsigned int) n
{
NSAssert( n < [layers count], @"Invalid index in MultiplexLayer switchTo message" );
[self removeChild: [layers objectAtIndex:enabledLayer] cleanup:YES];
enabledLayer = n;
[self addChild: [layers objectAtIndex:n]];
}since it is calling addChild when you switch back to the previous layer, it should be calling the init method again - I would look over your init method code again and see if you might be doing something wrong there. For instance, is your sharedSpriteFrameCache being cleared on switching layers? Probably not, what happens when your call this again, etc...
VTX
Member
Here is the current init code:
@implementation MenuLayer
- (id) init {
NSLog(@"MenuLayer");
self = [super init];
if (self != nil) {
// FadeOut startup image
CCSprite *startup = [CCSprite spriteWithFile:@"Default.png"];
[startup setPosition:ccp(160, 240)];
id fadeToBlack = [CCFadeTo actionWithDuration:.5f opacity:0];
[startup runAction: [CCSpawn actions: fadeToBlack,nil]];
[self addChild:startup z:0];
// Set up menu background
CCSprite *bg = [CCSprite spriteWithFile:@"menuBackground.png"];
[bg setOpacity:0];
[bg setPosition:ccp(160, 240)];
id fadeToBg = [CCFadeTo actionWithDuration:.5f opacity:255];
[bg runAction: [CCSpawn actions: fadeToBg,nil]];
[self addChild:bg z:0];
// Load animation
// loads the sprite frames from a Zwoptex generated file
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"menuAnimation.plist"];
NSMutableArray *animFrames = [NSMutableArray array];
for(int i = 0; i < 21; i++) {
CCSpriteFrame *frame = [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:@"Faster_Menu%i.png",i]];
[animFrames addObject:frame];
}
CCAnimation *animation = [CCAnimation animationWithName:@"dance" delay:0.07f frames:animFrames];
CCSprite *logo = [CCSprite spriteWithSpriteFrameName:@"Faster_Menu0.png"];
id action = [CCAnimate actionWithAnimation: animation];
id delay = [CCDelayTime actionWithDuration:3.5f];
id repeating = [CCRepeatForever actionWithAction:[CCSequence actions:delay,action,nil]];
logo.position = ccp(160,242);
[self addChild:logo z:2];
[logo runAction:repeating];
// Show Main Menu
[self showMainMenu];
}
return self;
}
VTX
Member
I finally fixed it by modifying the switchTo method in CCLayer.m. I set cleanup to NO.
Hopefully this will not cause new problem to popup, Im still investigating this :)
-(void) switchTo: (unsigned int) n
{
NSAssert( n < [layers count], @"Invalid index in MultiplexLayer switchTo message" );
[self removeChild: [layers objectAtIndex:enabledLayer] cleanup:NO];
enabledLayer = n;
[self addChild: [layers objectAtIndex:n]];
}
You must log in to post.