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In this Discussion
Make a sprite move left or right when swiped
Tom2012
Guru
Here's the code I used for this in my game Hungry Hector. In case it helps anyone - here's the code.
As always - any improvements welcomed.
In main.lua.
And here's the class file
I've attached an example game project below. Hope it helps. ;-)
As always - any improvements welcomed.
In main.lua.
-- setup the sprite / swipe movement local heroSprite = SwipeSprite.new() stage:addChild(heroSprite) |
SwipeSprite = Core.class(Sprite); function SwipeSprite:init() -- Set up sprite local mySprite = Bitmap.new(Texture.new("block.png")); self:addChild(mySprite) self.swipeTime = 0; -- set up swipe timer local timer = Timer.new(100, math.huge); self.swipeTimer = timer; timer:addEventListener(Event.TIMER, self.timeSwipe, self); self.speed = 2.3; -- touch listeners self:addEventListener(Event.TOUCHES_BEGIN, self.touchesBegin, self); self:addEventListener(Event.TOUCHES_END, self.touchesEnd, self); self:addEventListener(Event.ENTER_FRAME, self.onEnterFrame, self); end -- Enterframe loop - animation etc function SwipeSprite:onEnterFrame() if(self.moving=="right") then self:setX(self:getX()+self.speed) elseif(self.moving=="left") then self:setX(self:getX()-self.speed) end end function SwipeSprite:timeSwipe() self.swipeTime = self.swipeTime + 100; end -- When touch begins function SwipeSprite:touchesBegin(event) self.alreadySwiping = true -- ignore any touches that happen while we are swiping self.activeTouchId = event.touch.id -- remember touch id self.startX = event.touch.x; self.swipeTimer:start(); end function SwipeSprite:touchesEnd(event) if(self.activeTouchId == event.touch.id) then -- if this is the touch that started the swipe self.swipeTimer:stop(); self.swipeTime = 0; self.alreadySwiping = false if(self.swipeTime <= 800) then if(event.touch.x > self.startX + 20) then self.moving = "right"; elseif(event.touch.x < self.startX - 20) then self.moving = "left" end end end end |
Likes: TsubasaOzora
Lost Caverns - my little game on Play Store - https://play.google.com/store/apps/details?id=com.firecroc.lostcaverns
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Comments
Thanks anyway