How to do this, without using numerous ENTER_FRAMEs?

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• plamen Member

  December 2012

  @Tom2012: you can always use box2d :-)

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• Tom2012 Guru

  December 2012

  Thanks Plamen - just found what I needed. :-)
  
  I had no idea you could chain tweens in Gtween. That combined with running functions onComplete is very powerful.
  
  Here's the code I found...

  function someFunction()   print("something")   end   local tween1 = GTween.new(self, 1, {x = 100}, {onComplete=someFunction}) local tween2 = GTween.new(self, 1, {x = 400}, {autoPlay = false}) local tween3 = GTween.new(self, 1, {alpha = .5}, {autoPlay = false}) tween1.nextTween = tween2 tween2.nextTween = tween3 tween3.nextTween = tween1   end

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• Tom2012 Guru

  December 2012 edited December 2012

  For anyone interested in doing the same thing, here's my class for creating an animated character that walks back and forth without using Enterframes
  
  (Uses TNT Animator Studio)
  
  The speed is pixels per second

  WormWraith = Core.class(Sprite);   function WormWraith:init(scene,x,y,xDist,xSpeed)   self.scene = scene   local animLoader = CTNTAnimatorLoader.new() animLoader:loadAnimations("Animations/Atlas 2 Animations.tan", self.scene.atlas2, true) local anim = CTNTAnimator.new(animLoader) anim:setAnimation("WORM_WRAITH_WALK") anim:addToParent(anim) anim:playAnimation() self:addChild(anim) self.anim = anim;   self:setPosition(x,y)   --self:addEventListener(Event.ENTER_FRAME, onEnterFrame)       -- add transition   self.animProperties = {}   self.animProperties.repeatCount = 1 self.animProperties.dispatchEvents = true       -- first work out the x positions   self.point1 = self:getX() self.point2 = self.point1 - xDist;   self.travelTime = xDist / xSpeed   -- function where you can change animation or do other stuff at turning point... function turn() self:setScaleX(self:getScaleX()*-1) end     local tween1 = GTween.new(self, self.travelTime, {x = self.point2}, {onComplete=turn, delay=.4}) local tween2 = GTween.new(self, self.travelTime, {x = self.point1}, {onComplete=turn, delay = .4}) tween1.nextTween = tween2 tween2.nextTween = tween1   end

  And here's how to use it:

  local wormWraith = WormWraith.new(self,300,130,200, 50) stage:addChild(wormWraith)

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• plamen Member

  December 2012

  @Tom2012 just don't forget that the fact you may not using enterFrames doesn't mean your library don't use it. You can use timers with less resolution than enterFrames for improved performance but they could go asynchronous and do time interference with display refresh and make actors move shaky.

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