Calling another method from Cocos2d Hud layer

Question

I have two class files hudlayer.m and actionlayer.m

I have a method named jump in hudlayer.m And i have a method named jumpone in actionlayer.m

-(void) jumpone {
    _heroBody->ApplyLinearImpulse(b2Vec2(_playerVelX/[_lhelper pixelsToMeterRatio], 1.25), _heroBody->GetWorldCenter()); 
}

and another method called jump in hudlayer.m

-(void)jump {
   ActionLayer *aob = [[ActionLayer alloc] init]; 
   [aob jumpone];
}

The problem is when i call the Jumpone method from actionlayer.m my sprite jumps (i.e method called)

My init method of action layer

- (id)initWithHUD:(HUDLayer *)hud
{
    if ((self = [super init])) {

        [self setupWorld]; 
    }
    return self;
}

But when i call jumpone via jump method in from hudlayer.m it fails and my app crashed. Any help will be appreciated .thanks

Can you post the init method of ActionLayer ? and some traces from the error ? — giorashc, Jun 24 '12 at 14:16
ok... lets see the entire initialization ... :). Hey and what happend to jumpone call in the jump method ? — giorashc, Jun 24 '12 at 14:25
Can you also post how you create your world objects and bodies ? and the error messages ? — giorashc, Jun 24 '12 at 14:33
no error,,it comes to box2d source file...and i created bodies using level helper — vishnu, Jun 24 '12 at 14:42
Well its not clear than what exactly going on there but why do you create an entire layer for just jumping ??? in hud layer you should have a pointer to an already initialized action layer and just call the jumpone method with no initialization — giorashc, Jun 24 '12 at 14:48
My scene is parallax...so i can't use a button in action layer scene. — vishnu, Jun 24 '12 at 14:52
Still it is hard to figure what exactly is going on without some relevant code posted , specially scene/layer initialization and logic — giorashc, Jun 24 '12 at 17:43

score 0 · Answer 1 · answered Jun 24 '12 at 18:32

Everytime you call jump it creates a new instance of you ActionLayer. And following that, you setup a new world and everything get tangled up. Furthermore its a memory leak.

Make you ActionLayer to an iVar of HUDLayer and call

   aob = [[ActionLayer alloc] init];

in the HUDs init method. Dont forget to release aob in dealloc of the HUDLayer

score 0 · Accepted Answer · answered Jun 24 '12 at 18:50

0

the best solution for your problem is to add a tag to hudlayer & action layer

ex: hudlayer.tag=1; actionlayer.tag=2;

and then just use getChildByTag like this:

[[[[CCDirector sharedDirector]runningScene] getChildByTag:1]jumpone];

answered Jun 24 '12 at 18:50

skytz

2,201
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Hi thanks for reply...but if i add HUDLayer.tag = 2; i get an error "property tag not found on object of HUDlayer" – vishnu Jun 25 '12 at 15:20
well not HUDLayer.tag literally...i ment add self.tag in hud layer init method...i should've been more specific – skytz Jun 25 '12 at 15:59
Thanks a lot bro its working now :) bro can i get your Skype ? – vishnu Jun 25 '12 at 16:01
well..funny thing..i dont have skype =) but you can contact me through email (see profile) – skytz Jun 25 '12 at 16:15

Calling another method from Cocos2d Hud layer

2 Answers2