Physics Problem - Solved :)

Ninjadoodle

Hi guys

I'm trying to get the hang off physics in Gideros and I'm using debug mode.

Everything setups correctly and the physics shapes work the way they are supposed to, but I can't get the images to update/stick to their physics bodies. They are created in the correct place, but not updated.

This is my EnterFrame ...

function Stage09:onEnterFrame()   self.world:step(1/60, 8, 3)   for i = 1, self.ph:getNumChildren() do   local sprite = self.ph:getChildAt(i)   if sprite.body then   local body = sprite.body local bodyX, bodyY = body:getPosition() sprite:setPosition(bodyX, bodyY) sprite:setRotation(body:getAngle() * 180 / math.pi)   end end end

here is one of my objects ...

S09Ball = Core.class(Sprite)   function S09Ball:init(x, y, wrld, atlas, container)   self.sprite = Bitmap.new(atlas:getTextureRegion("s05Debris.png")) self.sprite:setAnchorPoint(0.5, 0.5) self.sprite:setPosition(x, y) self:addChild(self.sprite) container:addChild(self)   local radius = self.sprite:getWidth() / 2   local body = wrld:createBody{type = b2.DYNAMIC_BODY} body:setPosition(self.sprite:getX(), self.sprite:getY()) body:setAngle(self.sprite:getRotation() * math.pi / 180)   local circle = b2.CircleShape.new(0, 0, radius) local fixture = body:createFixture{shape = circle, density = 1.0, friction = 0.1, restitution = 0.2}   self.sprite.body = body self.sprite.body.type = "ball"   end

and here is how I add it ...

self.onTouch = function(target, event)   if target:hitTestPoint(event.touch.x, event.touch.y) then   self.ball = S09Ball.new(event.touch.x, event.touch.y, self.world, self.pack, self.ph)   end end   self:addEventListener(Event.TOUCHES_BEGIN, self.onTouch, self)

Thanks heaps for any help

Ninjadoodle

Got it! I was not referencing the sprite correctly inside the ENTER_FRAME function ...

Since I'm using a class, it needs to be something like this ...

function Stage09:onEnterFrame()   self.world:step(1/60, 8, 3)   for i = 1, self.ph:getNumChildren() do   local item = self.ph:getChildAt(i)   if item.sprite.body then   local body = item.sprite.body local bodyX, bodyY = body:getPosition() item.sprite:setPosition(bodyX, bodyY) item.sprite:setRotation(body:getAngle() * 180 / math.pi)   end end end