cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   demetriusb
   Member

   I've tried working through the transitions example. I've torn that example apart. When I try to apply it to what I'm working on it doesn't work. I'm using this code:

   @interface FadeWhiteTransition : FadeTransition
   +(id) transitionWithDuration:(ccTime) t scene:(Scene*)s;
   @end

   @implementation FadeWhiteTransition
   +(id) transitionWithDuration:(ccTime) t scene:(Scene*)s {
   return [self transitionWithDuration:t scene:s withColor:ccWhite];
   }

   -(void)startGame: (id)sender {

   OneScene * os = [OneScene node]
   [[Director sharedDirector] replaceScene: [transition transitionWithDuration:TRANSITION_DURATION scene:os]];
   }

   First of all ccWhite throws up an error.
   Next "transition" undeclared first use of this action.

   If anyone has a concrete example, I'd appreciate it. While the transitions example is good for showing all the possibilities, it not very useful for showing how to implement just one transition.

   Demetrius

   Posted 2 years ago #
2. 

   exorcyze
   Member

   I just use the following :
   

   GameScene *newscene = [GameScene node];
   [[Director sharedDirector] replaceScene:[ZoomFlipXTransition transitionWithDuration:0.5 scene:newscene]];

   That's it. =)

   There are a bunch of baked-in transitions available ( like SlideInRTransition, ShrinkGrowTransition, etc ) - you can see a list in ... Transitions.h if memory serves. Otherwise you can do a search through the source to find the location they're all listed in.

   Posted 2 years ago #
3. 

   javy
   Member

   I had problems with FadeWhiteTransition myself. Doesn't seem to work like the others.

   //Class transition = NSClassFromString(@"FadeWhiteTransition"); // FAIL
   Class transition = NSClassFromString(@"FadeTransition");        // Okay
   [[Director sharedDirector] replaceScene: [transition transitionWithDuration:0.5f scene:[MenuScene node]];

   This was with Cocos 0.8.1

   Posted 2 years ago #
4. 

   demetriusb
   Member

   Thanks. I made it harder than it actually was. The hard stuff I can do. Sometimes it's the easy stuff that trips me up.

   Demetrius

   Posted 2 years ago #
5. 

   javy
   Member

   My code example was from something I saw somewhere else. I like how you wrote the transition calling the transition directly. I'll use that in the future.

   Posted 2 years ago #
6. 

   leanhtai
   Member

   What is OneScene? I wonder where you guys normally declare that ?

   Posted 2 years ago #
7. 

   leocck
   Member

   "OneScene" is some class created for your game, the name is only an example.

   You must create at least one class that extends Scene to run your game with Cocos2d.

   Posted 2 years ago #
8. 

   leanhtai
   Member

   Hi again! I making a timer that count down the time and display on the screen. I am so frustrated now. Because I can only make it count up.

   label = [Label labelWithString:@"0" fontName:@"Helvetica" fontSize:50];
   label.position = ccp(100,280);
   [label setColor:ccc3(0, 0, 0)];
   [self addChild:label];
   [self schedule: @selector(timeCounter:) interval:1.0f];

   -(void)timeCounter:(ccTime) delta
   {

   timer +=1;
   [label setString: [NSString stringWithFormat:@"%2.1f", timer] ];

   }

   Could anyone tell me how to fix this issue. Thanks a lot for any help. And one more thing,the interval is just take float, i just want interger then what should I apply?

   Posted 2 years ago #
9. 

   leocck
   Member

   Shouldn't be ....:

   -(void)timeCounter:(ccTime) delta
   {
   
      timer -=1;
      [label setString: [NSString stringWithFormat:@"%02d", timer] ];
   
   }

   ?

   Posted 2 years ago #
10. 

    leanhtai
    Member

    Hi Thanks a lot for your help. I have tried like what you suggested. At the label I write like this
    label = [Label labelWithString:@"20" fontName:@"Helvetica" fontSize:50];
    label.position = ccp(100,280);
    [label setColor:ccc3(0, 0, 0)];
    [self addChild:label];
    [self schedule: @selector(timeCounter:) interval:1.0f];

    and the timerCounter I write like what you said
    -(void)timeCounter:(ccTime) delta
    {

    timer -=1;
    [label setString: [NSString stringWithFormat:@"%02d", timer] ];

    }
    It will appear 20 at first. Then 1 second passed it will show 0 and stay there for good.
    If i change the stringWithFormat : @"%2.1f" like this It will appear 20 at first then it starts to appear negative number like -1,-2 every second passes.

    Please give me some advise in this. I am so grateful.

    Posted 2 years ago #
11. 

    leanhtai
    Member

    Hi again. And another problem, each time it calls back the scene, it will go to the first state of the timer again. So even though the player already play for 10 seconds it will still count from 20 to 0 again. Any thoughts to solve this problem? I thank you so much

    Posted 2 years ago #
12. 

    leocck
    Member

    Hi,

    Where did you init the "timer" value? If you init only label's string it won't works... 'cos every time you are using timer's value inside your timeCounter function.

    So you want to keep the total amount of time the user has played... I think the best approach to do this is to "save" the value on NSUserDefaults (search API's documentation for this)

    Posted 2 years ago #
13. 

    leanhtai
    Member

    Yea that is it, thanks alot , I fixed my timer. ^^.... thanks again for your help

    Posted 2 years ago #

RSS feed for this topic

Reply

You must log in to post.