cocos2d for iPhone

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

1. 

   Devnoob
   Member

   hello.

   i am having a problem with creating objects on the fly .my game contains the following.. game scene, game layer:layer, enemyClass:AtlasSprite

   1- I want to make objects from the enemyClass on the fly on a specified period of the game which i dont know how...both logic and programming

   2- then when the user touch the enemy i want to fade out then release it..what i ve tried is
   [parent removeChild:self cleanup:YES];>>>>this is working but i cant see the fade out.
   ex...
   enemyClass
   (void)kill
   {
   change position...
   fade...
   [parent removeChild:self cleanup:YES];
   }

   Posted 2 years ago #
2. 

   pabloruiz55
   Member

   hi!

   To make the sprite fade and THEN be removed you should create a sequence, which first action is the fadeout and then a callfuncN which takes that node and removes it.

   Posted 2 years ago #
3. 

   Devnoob
   Member

   thanks i've tried but with no luck ,the object just disappears before updating the graphics on the screen ...what i am doing in enemyClass
   init{
   [self schedule:@selector(move:)];
   }
   (void)move{
   //move enemy}

   (bool)ccTouch....{
   if touch{
   [self fade];}

   (void)fade{
   //change position...
   //channge texture to include blood splatter
   //fade...
   //[self kill];}

   ....// then (void)kill {[parent removeChild:self cleanup:YES];}

   Posted 2 years ago #
4. 

   Blue Ether
   Member

   you have to schedule your kill function, not just call it. As in:

   [self schedule:@selector(kill:) interval:1.0f];
   // change the interval to however many seconds you want the kill to be delayed by
   
   - (void) kill:(ccTime)dt
   {[parent removeChild:self cleanup:YES];}

   Posted 2 years ago #
5. 

   Devnoob
   Member

   thanks alot .scheduling the kill fuction worked .:)))
   but can you help me with the first problem.
   1-i want to make objects from the enemyClass on the fly on a specified period of the game which i dont know how...both logic and programming

   Posted 2 years ago #
6. 

   Blue Ether
   Member

   There are any number of ways you could keep spawning new enemies. One simple way would be to schedule spawn functions in your Layer with different interval times. You're getting pretty close to the heart of game design though, and not really anything cocos2d-specific. If I were you I would hunt down some general game design tutorials for design patterns.

   Also I forgot to put it in my code above but you should probably unschedule the kill function after it has run, since you only want to run it once. It would look like this:

   - (void) kill:(ccTime)dt
   {
   [parent removeChild:self cleanup:YES];
   [self unschedule:@selector(kill:)];
   }

   Scheduled selectors keep running at their scheduled interval (or every frame if no interval is selected). So you have to explicitly unschedule them to have "run once" behavior.

   Posted 2 years ago #
7. 

   Devnoob
   Member

   hi pabloruiz55

   {To make the sprite fade and THEN be removed you should create a sequence, which first action is the fadeout and then a callfuncN which takes that node and removes it. }

   i just figure it out CallfuncN is a class sorry my bad...i will give it a try

   Posted 2 years ago #

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