cocos2d for iPhone

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

1. 

   jd
   Member

   This if statement does not work. Neither does mainTo.isDone. Is there a way to find out if my character has landed after jumping that's not a hack?

   id mainTo = [JumpTo actionWithDuration:2 position:[AppDelegate get].mainCharacter.position height:50 jumps:1];
   
   	if ([mainTo isDone]) {
   		[[AppDelegate get].mainCharacter runAction: mainTo];
   	}

   Posted 2 years ago #
2. 

   rolando
   Moderator

   > This if statement does not work. Neither does mainTo.isDone. Is
   > there a way to find out if my character has landed after jumping
   > that's not a hack?
   >
   > id mainTo = [JumpTo actionWithDuration:2 position:
   > [DieMonstersDieAppDelegate get].mainCharacter.position height:50
   > jumps:1];
   >
   > if ([mainTo isDone]) {
   > [[DieMonstersDieAppDelegate get].mainCharacter runAction: mainTo];
   > }

   [action stop] is called when the action stops. What I'm doing right
   now in ShinyCocos to install a hook when the action stops is to use
   that stop selector. Actually, I'm replacing the implementation of
   @selector(stop) in the Action class, but you could get the same effect
   subclassing JumpTo and implementing just the stop method, or just
   opening it:

   @interface JumpTo (StopHook)
   - (void)stop;
   @end
   
   @implementation JumpTo (StopHook)
   - (void)stop {
   	// do something here
   }
   @end

   Also, are you constantly testing for [mainTo isDone]?...
   hth,
   --
   Rolando Abarca M.

   Posted 2 years ago #
3. 

   jd
   Member

   I'm testing mainTo isDone only when they press the jump button. I might just put a temp hack to check if Y position = original Y position.

   Posted 2 years ago #
4. 

   jp16
   Member

   I have a similar problem.

   Does subclassing RepeatForever and overriding start and stop work the same way? I tried doing this and the actions called by actionWithAction in my CustomRepeatForever class stopped running.

   Posted 2 years ago #
5. 

   Nicke
   Member

   I solved my "Can the user jump again?" dilemma by checking if he has "landed", e.g his y coordinate has returned to ground level. Works just fine, although I do see the value of being able to check if the action is done too...

   Posted 2 years ago #
6. 

   jp16
   Member

   Thanks for the reply Nicke. I was using the same method to detect when my character has landed as well. However for some strange reason when landing from using a "JumpBy" action, the Y position is off, 100.00001 vs 100. So during my check to see if the sprite lands, it fails and is not able to jump again. I resolved this by using a MoveTo action to move the sprite back to 100.0. Did you encounter this problem?

   Posted 2 years ago #
7. 

   Nicke
   Member

   Casting it to an integer should solve your problem.

   Posted 2 years ago #

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