Draw priority

totebo

With this code, the shape is never visible. Why is that? Does addChild happen with a delay, or on the next frame? Maybe Gideros waits until the whole chunk of code is ready before it draws?

I'm looking to show a loading screen before some heavy duty work, and bumped into this issue. Is there a safe way to detect when the shape is showing, so I can start the heavy lifting afterwards?

local shape = Shape.new() shape:setFillStyle(Shape.SOLID, 0xff0000, 1) shape:beginPath() shape:moveTo(0,0) shape:lineTo(100, 0) shape:lineTo(100, 100) shape:lineTo(0, 100) shape:lineTo(0, 0) shape:endPath() shape:setPosition(0, 150) stage:addChild(shape)   for i=1, 100000000 do end   shape:removeFromParent()

totebo

Perhaps even more curiously, why doesn't the shape become visible with this code?

local shape = Shape.new() shape:setFillStyle(Shape.SOLID, 0xff0000, 1) shape:beginPath() shape:moveTo(0,0) shape:lineTo(100, 0) shape:lineTo(100, 100) shape:lineTo(0, 100) shape:lineTo(0, 0) shape:endPath() shape:setPosition(0, 150)   local onAddedToStage = function() for i=1, 100000000 do end shape:removeFromParent() end   shape:addEventListener( Event.ADDED_TO_STAGE, onAddedToStage )   stage:addChild(shape)

totebo

This works! Why?! Is it "safe"?

local shape = Shape.new() shape:setFillStyle(Shape.SOLID, 0xff0000, 1) shape:beginPath() shape:moveTo(0,0) shape:lineTo(100, 0) shape:lineTo(100, 100) shape:lineTo(0, 100) shape:lineTo(0, 0) shape:endPath() shape:setPosition(0, 150)   local heavy = function() for i=1, 100000000 do end shape:removeFromParent() end   Timer.delayedCall( 1, heavy )   stage:addChild(shape)

ar2rsawseen

so to simplyfy things, gideros works like this
run code
render

which together is frame

so it does

runcode
render
runcode
render
runcode
render
runcode
render

all the time under the hood

Delay runs code on next enter frame or basically next time code is run, all other examples are on the same runcode time

totebo

Thanks, got it.