FB Instant game is very slow on iOS

pm1891 · September 2019

Hi guys,
So I'm back with an odd problem. My fb instant game is running very slow on iPhone, be it touch events or gtween events. The game otoh runs smoothly on android devices, even the entry-level ones. So what can the issue be? Thanks.

pm1891 · September 2019

Ok, so after looking at the forums for some advice, these are the following things I've changed:-

1)I got rid of all touch events in my game. Now there's exactly one touch event added to the stage and I handle all touch events through it, like this

 
function M:onMouseDown(event)
 
	for k, v in pairs(mydata.touchHolder) do
		if k and v and v:hitTestPoint(event.x, event.y) then
			onMouseDown(v, event)		
                end		
	end
 
end

2)Then I'm trying to pool my bitmaps at the start of every scene like this. I'm not sure I'm doing this right as a speed bump has been negligible. So I would really appreciate some advice here.

pool.lua

function pool.create(newO, poolSize, Base)
 
	if newO==150 then
 
		local function newObject()
			local obj = shape.rect(-dx,-dy,fullw+dx+dx,fullh+dy+dy)
			return obj
		end
 
		poolSize = poolSize or 16
		assert(newObject, "A function that returns new objects for the pool is required.")	
 
		local freeObjects = {}
		for _ = 1, poolSize do
			table.insert(freeObjects, newObject())
			if _==poolSize then 
				print("bitmap loaded") 
				local text = TextField.new(mydata.font1, "bitmap loaded")
				stage:addChild(text)
				text:setPosition(50, 50)
			end
		end
 
		return setmetatable({
				freeObjects = freeObjects,
				newObject = newObject
			},
			poolmt
		)
 
 
	else
 
		local function newObject()
			local obj = Bitmap.new(Base:getTextureRegion(newO))
			return obj
		end
 
		poolSize = poolSize or 16
		assert(newObject, "A function that returns new objects for the pool is required.")	
 
		local freeObjects = {}
		for _ = 1, poolSize do
			table.insert(freeObjects, newObject())
			if _==poolSize then 
				print("bitmap loaded") 
				local text = TextField.new(mydata.font1, "bitmap loaded")
				stage:addChild(text)
				text:setPosition(50, 50)
			end
		end
 
		return setmetatable({
				freeObjects = freeObjects,
				newObject = newObject
			},
			poolmt
		)
 
 
 
	end
end
 
function pool:obtain()
	return #self.freeObjects == 0 and self.newObject() or table.remove(self.freeObjects)
end
 
function pool:free(obj)
	assert(obj, "An object to be freed must be passed.")
 
	table.insert(self.freeObjects, obj)
	if obj.reset then obj.reset() end
end
 
function pool:clear()
	for k in pairs(self.freeObjects) do
		self.freeObjects[k] = nil
	end
end
 
return pool

levelselectscene.lua

function LevelSelectScene:init(t)
	if t then
		print("LevelSelectScene: ", t)
	end		
 
    local levelselect = mydata.levelselect
    local Base = mydata.Base
 
    -----------------------pooling bitmaps----------------------------
 
	mydata.bitmaps = {}
	mydata.bitmaps[1] = pool.create(77, 4, Base)  --["rect_btn6"] = 77,
	mydata.bitmaps[2] = pool.create(86, 4, Base)  --["socialBase"] = 86,
	mydata.bitmaps[3] = pool.create(98, 4, Base)   --["xClose"] = 98,
	mydata.bitmaps[4] = pool.create(86, 4, Base)  --["socialBase"] = 86,
	mydata.bitmaps[5] = pool.create(150, 4, Base)  --["socialBase"] = 86,
    mydata.bitmaps[6] = pool.create(42, 4, Base)  --["PopUpStar"] = 42,
    mydata.bitmaps[7] = pool.create(75, 4, Base)  --["rect_btn4"] = 75,
    mydata.bitmaps[8] = pool.create(70, 4, Base)   --["levelLives"] = 70
    mydata.bitmaps[9] = pool.create(66, 4, Base)   --["levelLives"] = 70
    mydata.bitmaps[10] = pool.create(56, 4, Base)   --["levelLives"] = 70
    mydata.bitmaps[11] = pool.create(117, 4, Base)   --["levelLives"] = 70
    mydata.bitmaps[12] = pool.create(80, 4, Base)   --["levelLives"] = 70
    mydata.bitmaps[13] = pool.create(124, 4, Base)   --["levelLives"] = 70
    mydata.bitmaps[14] = pool.create(126, 4, Base)   --["levelLives"] = 70
    mydata.bitmaps[15] = pool.create(132, 4, Base)   --["levelLives"] = 70
    mydata.bitmaps[16] = pool.create(69, 4, Base)  --["levelCoins"] = 69
 
 
	self:addEventListener("enterBegin", self.onTransitionInBegin, self)
	self:addEventListener("enterEnd", self.onTransitionInEnd, self)
	self:addEventListener("exitBegin", self.onTransitionOutBegin, self)
	self:addEventListener("exitEnd", self.onTransitionOutEnd, self)
end

The game is still very sluggish on older phones like iphone 5. Any and all advice is deeply appreciated.

hgy29 · October 2019

Did you try to profile your code using gideros studio profiler ? It should point you to the right direction.

pm1891 · October 2019

@hgy29 - I'm not sure how to use the profiler.

oleg · October 2019

pm1891 said:
@hgy29 - I'm not sure how to use the profiler.

https://wiki.giderosmobile.com/index.php/Profiling

hgy29 · October 2019

If you are unsure how to interpret the profiler log, post two versions here, one for android and one for iOS. If there is a severe performance issue on iOS, it should appear.

pm1891 · October 2019

@hgy29 - Thanks. Will do.

pm1891 · October 2019

@hgy29 - Sorry for being so late with the reply. I was struggling and failing with getting profiling to work with instant game. I feel like a complete idiot- seems I can do nothing right.

Anyways, if anyone wants to take a look - here' the barebones of the game mechanics. Just game pieces dropping onto a board and looks very jerky on iOS messenger.

MoKaLux · October 2019

@pm1891 sorry I can't help here

talis · October 2019

pm1891 said:
@hgy29 - Sorry for being so late with the reply. I was struggling and failing with getting profiling to work with instant game. I feel like a complete idiot- seems I can do nothing right.

Anyways, if anyone wants to take a look - here' the barebones of the game mechanics. Just game pieces dropping onto a board and looks very jerky on iOS messenger.

Sorry that i have no comment for the code but here is some moral support:D

Don't be harsh on yourself so much, this is called a learning curve. Sometimes it is logarithmic and so much difficult, sometimes not. Important thing is to not to quit and always try. Experience can not be gained without a difficulty. When you are depressed always look to the accomplishments that you have achieved, and not focus on your failures.
Now show your skills to us Champion:D
Note: If this one will not help watch Rocky 1 one more time to give you some quick energy:D

hgy29 · October 2019

pm1891 said:
@hgy29 - Sorry for being so late with the reply. I was struggling and failing with getting profiling to work with instant game. I feel like a complete idiot- seems I can do nothing right.

Well don't feel bad about it, honestly I had almost forgotten that I was never able to profile on iOS instant game.
It is easy on IG/desktop, and it requires a bit of setup for IG/Android, but I am not sure it is even possible for IG/iOS.

Anyway I tried your code on native iOS, just to get an idea of what consumes CPU. We can see there that there is a lot of function calls per frame, and that could be optimized somehow, but I would be surprised if it was the problem since iOS devices usually have decent CPU power. It could have been canvas size related (retina), but your code doesn't seem to manipulate a lot of pixels.

It could be a general FPS issue: FPS clamped to 30 on iOS/IG, but hard to tell.

I will look further and report back.

hgy29 · October 2019

Ok, so it turns out that there is no practical way to profile under facebook app webview on iOS. However, I was able to profile a classic HTML5 export running on iOS safari. Unluckily it seems to work rather well on my iPhone (X), so I can't really tell what is supposed to be wrong...

pm1891 · October 2019

@MoKaLux - Thanks for taking a look.

@talis - Thank you so much for your kind words. Means so much to me. No lie , I did watch "Eye of the tiger" on youtube.

@hgy29 - Thank you so much for devoting time to my project. In a way it's a relief to find out that profiling doesn't work on iOS. Makes me feel less of an idiot. Even more of a relief that the game works well on iPhone X. Maybe it's the older models that have this issue with lagging.
I guess now I should just concentrate on optimizing all the functions that update per frame and hope for the best.

Again, thank you all for taking an interest in my issue. This forum is the best.

Unknown · December 2020

Is your FB system outdated? You can try to update the app's system to the latest version. Please remember to also have a software update on your iPhone. Then clear all apps running in the background and re-launch the game to see if it is still running slow. If it does, then you could try to use related professional ios repair tools such as TunesKit iOS System Recovery. This software could resolve various iOS issues including iPhone and apps running slow.

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