Problems pausing chained tweens

Tom2012

I like chaining tweens but pausing them is problematic.

I'm getting odd things happening, such as the character jumping and moving backwards etc...

Here's the code:

self.tween1 = GTween.new(self, self.travelTime, {x = self.point2}, {onComplete=turn, delay=.1})   self.tween2 = GTween.new(self, self.travelTime, {x = self.point1}, {autoPlay = false, onComplete=turn, delay = .1})   self.tween1.nextTween = self.tween2 self.tween2.nextTween = self.tween1

And here's the bit where I'm pausing...

self.health = self.health - 1 self.invincible = true   if (self.tween1:isPaused() == false) then self.tween1:setPaused(true) end   if (self.tween2:isPaused() == false) then self.tween2:setPaused(true) end     self.anim:setAnimation("WORM_WRAITH_HIT") Timer.delayedCall(400, function() self.invincible = false     if (self.tween1:isPaused() == true) then self.tween1:setPaused(false) end   if (self.tween2:isPaused() == true) then self.tween2:setPaused(false) end

I'll post the entire code in the next post...

Tom2012

WormWraith = Core.class(Sprite);   function WormWraith:init(scene,tileX,tileY,xDist,xSpeed)   -- work out the x and y from tile reference   tileX = tileX + 1 tileY = tileY + 1   self.xPos = (tileX * 50) - 25 self.yPos = (tileY * 50) - 25 self.health = 3   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:setAnimAnchorPoint(.5,.5) anim:addToParent(anim) anim:playAnimation() self:addChild(anim) self.anim = anim;   self:setPosition(self.xPos,self.yPos)   self.facing = "left" table.insert(self.scene.enemies, self)       -- 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 turn()   anim:setAnimation("WORM_WRAITH_TURN")     Timer.delayedCall(100, function()   if(not(self.dead)) then anim:setAnimation("WORM_WRAITH_WALK") end   if(self.facing=="left") then   self:setScaleX(-1) self.facing = "right"   else   self:setScaleX(1) self.facing = "left"   end     end)     end   self.invincible = true Timer.delayedCall(1000, function() self.invincible = false end)     self.tween1 = GTween.new(self, self.travelTime, {x = self.point2}, {onComplete=turn, delay=.1})   self.tween2 = GTween.new(self, self.travelTime, {x = self.point1}, {autoPlay = false, onComplete=turn, delay = .1})   self.tween1.nextTween = self.tween2 self.tween2.nextTween = self.tween1   end         function WormWraith:reduceHealth(index)   if(not(self.invincible)) then   self.health = self.health - 1 self.invincible = true   if (self.tween1:isPaused() == false) then self.tween1:setPaused(true) end   if (self.tween2:isPaused() == false) then self.tween2:setPaused(true) end     self.anim:setAnimation("WORM_WRAITH_HIT") Timer.delayedCall(400, function() self.invincible = false     if (self.tween1:isPaused() == true) then self.tween1:setPaused(false) end   if (self.tween2:isPaused() == true) then self.tween2:setPaused(false) end     if(not(self.dead)) then self.anim:setAnimation("WORM_WRAITH_WALK") end   end)   -- I have died   if(self.health<=0) then   self.tween1:setPaused(true) self.tween2:setPaused(true) self.dead = true table.remove(self.scene.enemies, index) self.anim:setAnimation("WORM_WRAITH_DIE")   Timer.delayedCall(1000, function() local tween = GTween.new(self, .3, {alpha=0}) end)   Timer.delayedCall(1400, function() self.scene.enemyLayer:removeChild(self) end)   end   end   end

Tom2012

I have figured this out...

The problem is you can't pause all tweens in the chain. You have to find out which tween is the current one and only pause that.

In my case I used this in the function that runs after each tween:

if(self.currentTween==1) then self.currentTween = 2 else self.currentTween = 1 end

In conjunction with...

if(self.currentTween==1) then self.tween1:setPaused(true) else self.tween2:setPaused(true) end

To only pause the current tween...