Quick questions about Gideros&Lua

hgy29 · August 2019

For the 2), it is platform dependant code, usually found here in the repository: https://github.com/gideros/gideros/tree/master/libgid/src

For android: https://github.com/gideros/gideros/blob/master/libgid/src/android/platform-android.cpp#L139, but since this piece of code actually calls Java, effective code is here:https://github.com/gideros/gideros/blob/master/android/GiderosAndroidPlayer/app/src/main/java/com/giderosmobile/android/player/GiderosApplication.java#L1028

For 1) Gideros should allow Sprites that are no longer reachable from lua nor on stage to be GC'ed. I am not sure about listeners though

Apollo14 · August 2019

hgy29 said:
For the 2), it is platform dependant code, usually found here in the repository: https://github.com/gideros/gideros/tree/master/libgid/src

For android: https://github.com/gideros/gideros/blob/master/libgid/src/android/platform-android.cpp#L139, but since this piece of code actually calls Java, effective code is here:https://github.com/gideros/gideros/blob/master/android/GiderosAndroidPlayer/app/src/main/java/com/giderosmobile/android/player/GiderosApplication.java#L1028

For 1) Gideros should allow Sprites that are no longer reachable from lua nor on stage to be GC'ed. I am not sure about listeners though

Thx! I guess I'll have to test garbage collection with and without different listeners and tweens that may cause memory leaks.

Apollo14 · September 2019

Guys, does font filtering affect perfomance if we enable it?

SEGOE_BOLD_30 @ \TTFont.new("gui/fonts/segoe-ui-bold.ttf",30,"",true)\

hgy29 · September 2019

Enabeling font filtering has the same impact on a font as enabling texture filtering on a texture, that is absolutely no impact on the CPU, but GPU has more work to do. I don't have any figures nor facts at hand, but I guess decent GPUs have dedicated hardware for texture filtering, so all that it costs is more reads in texture memory. This is so common that I suppose all GPU makers have optimized that case too (caches, pipeline, look ahead, etc).

Apollo14 · September 2019

Guys, does every single image inside project auto-scale if we have @2x copy of it?
(I'm concerned about spritefont PNGs and Spine texturepack PNGs - do they auto-scale?)
http://docs.giderosmobile.com/automatic_image_resolution.html

keszegh · October 2019

i have a quick question about Zerobrane studio. since i've moved to a new computer the 'outline window' is greyed out for me and so i cannot see it. do you know the reason? i've updated zbs to the most recent github version, but it's still greyed out. i need to fix this as this is one of the main reasons i use zbs.

UPDATE: i've found it as a tab next to the project window. it's a bit misleading that it's greyed out in this case. in any case at the end i've got it.

Apollo14 · October 2019

Guys, if I remember correctly, there was a small class for vertical scrolling content?
What's its name?
(I know there's big 'Layout' class, but I'd just go with small class)

keszegh · October 2019

aceslider?

Apollo14 · October 2019

keszegh said:
aceslider?

I guess yes! I've just checked it, I guess it's good.
Thx!
P. S. It seems to be grid-based. Maybe there's some other class to scroll just smoothly?

MoKaLux · October 2019

I think that you are looking for this one:

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

MoKaLux · October 2019

plus a zip example (I could not put it in the wiki because it doesn't accept zip files).

oleg · October 2019

Apollo14 said:

keszegh said:
aceslider?
I guess yes! I've just checked it, I guess it's good.
Thx!
P. S. It seems to be grid-based. Maybe there's some other class to scroll just smoothly?

My aceslider modification:
http://forum.giderosmobile.com/discussion/7636/my-scroll-class#latest

rrraptor · October 2019

Its not a question, and definitely not worth for a separated thread, so i decided to post it here

I was playing around with noises (perlin and simplex), and they uses math.floor() 3 times per noise function call, and folowing this page, i also tried to make a fastfloor function) And i found a couple ways:

function fastfloor1(value)
	return (value*2)//2
end
function fastfloor2(value)
	return value << 0
end
function fastfloor3(value)
	return value >> 0
end
function fastfloor3(value)
	return value | 0
end

Here is profiler code:

max@100000
calls@10
local randomSeed,random,floor=Core.randomSeed,Core.random,math.floor
local rad=math.rad
randomSeed(0,1) -- just in case the first call takes longer
 
function test1()
	randomSeed(0,1)
	for loop=1,max do
		local v=random()*100000
		local floored = v >> 0
	end
end
--
function test2()
	randomSeed(0,1)
	for loop=1,max do
		local v=random()*100000
		local floored = v << 0
	end
end
function test3()
	randomSeed(0,1)
	for loop=1,max do
		local v=random()*100000
		local floored = v | 0
	end
end
function test4()
	randomSeed(0,1)
	for loop=1,max do
		local v=random()*100000
		local floored = (v*2)//2
	end
end
--
function test5()
	randomSeed(0,1)
	for loop=1,max do
		local v=random()*100000
		local floored = floor(v)
	end
end
--
 
Core.profilerReset()
Core.profilerStart()
for loop=1,calls do
	test1()
	test2()
	test3()
	test4()
	test5()
end
Core.profilerStop()
result=Core.profilerReport()
print("Number of tests:",max*calls)
for k,v in pairs(result) do
	local found=false
	for k2,v2 in pairs(v) do
		if found and k2=="time" then print(v1,v2) end
		if k2=="name" and string.sub(v2,1,4)=="test" then v1=v2 found=true end
	end
end</pre>

And the results:

Number of tests:	1000000
test2	0.3579149000052
test3	0.41253449999931
test5	0.75688079999782
test4	0.44130270000278
test1	0.35352640000201

hgy29 · October 2019

@rrraptor I usually use value//1 instead of floor

rrraptor · October 2019

@hgy29 shifting to the right faster

But ony for a large number of calculations ofcourse.

hgy29 · October 2019

rrraptor said:
@hgy29 shifting to the right faster But ony for a large number of calculations ofcourse.

Maybe if you say so (the //1 case isn't part of your profiling), however I think //1 is more readable than >>0. But that's my opinion

Apollo14 · October 2019

MoKaLux said:
I think that you are looking for this one:

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

hell, after 2 days messing with scrollable classes my nerve cells are really annoyed
I have to admit that coding interfaces is ugly as hell in gideros: monkey-coding at its best

I guess I should give 'Layout' class a try

keszegh · October 2019

@Apollo14 , yes, what i hate most about (game) programming is doing the interface, especially if i want it to adapt to various screen sizes. but this issue is not that much gideros dependent i think, although a visual editor could help a lot. and yes, Layout class maybe helpful, i did not use it yet in any project.

oleg · October 2019

@Apollo14 @keszegh Explain what is difficult for you in interfaces? It is enough to create a template 1 time and then use it in all games ..

Apollo14 · October 2019

keszegh said:
@Apollo14 , yes, what i hate most about (game) programming is doing the interface, especially if i want it to adapt to various screen sizes. but this issue is not that much gideros dependent i think, although a visual editor could help a lot. and yes, Layout class maybe helpful, i did not use it yet in any project.

in my case event listeners from 'listview' and 'button' classes messed with each other, it got ugly
(I use my customized button class)

keszegh · October 2019

@oleg, well, if you look at the gui of my game ikonomikon you'd see that it's a bit different from what one usually needs. the same goes for my app fragmenter. also i do not make many apps/games, just a few that i work on a lot, thus so far i could not reuse my templates/snippets too much.
but you are right, next time i do a gui, it will be way faster than the first time.
in general what i find most annoying is to make the gui adapt to screen sizes from ratio almost 1:1 to almost 2:1. if you just put things in the middle of the screen and in corners, that's fine, but if you want to have kind of a frame and many buttons arranged inside, then there will be difficulties.

oleg · October 2019

Apollo14 said:

keszegh said:
@Apollo14 , yes, what i hate most about (game) programming is doing the interface, especially if i want it to adapt to various screen sizes. but this issue is not that much gideros dependent i think, although a visual editor could help a lot. and yes, Layout class maybe helpful, i did not use it yet in any project.
in my case event listeners from 'listview' and 'button' classes messed with each other, it got ugly
(I use my customized button class)

That is the reason I redesigned aceslider for my button class

oleg · October 2019

keszegh said:
@oleg, well, if you look at the gui of my game ikonomikon you'd see that it's a bit different from what one usually needs. the same goes for my app fragmenter. also i do not make many apps/games, just a few that i work on a lot, thus so far i could not reuse my templates/snippets too much.
but you are right, next time i do a gui, it will be way faster than the first time.
in general what i find most annoying is to make the gui adapt to screen sizes from ratio almost 1:1 to almost 2:1. if you just put things in the middle of the screen and in corners, that's fine, but if you want to have kind of a frame and many buttons arranged inside, then there will be difficulties.

Here's my 2: 1 screen adaptation option.
I tie all the elements not to specific coordinates but to a percentage of the screen width.

hgy29 · October 2019

I am making my own UI system with several widgets (List/Table,Tree,Scrollable pane, Checkbox,RadioButton,TextFields,Label,...). I used it for my last game and it saved me a lot of time. It adapts to screen dimensions automatically. It also support gestures, drag and drop, templates and factories, and a powerful layout builder from a table description.

I will release it as part of gideros soon, but I’ll need your help for the documentation!

oleg · October 2019

@hgy29 It would be good if the Gideros GUI could be modified directly from the code

I like how it is done in defold: I can add a text box from the code to the properties panel and associate it with a variable in the game code. Then I can visually change the values of the variables through the properties panel

Apollo14 · October 2019

hgy29 said:
I will release it as part of gideros soon, but I’ll need your help for the documentation!

We'll help!

hgy29 · October 2019

oleg said:
@hgy29 It would be good if the Gideros GUI could be modified directly from the code

Everything will be modifiable from the code, actually I don't have a graphical UI builder yet.

oleg · October 2019

hgy29 said:

oleg said:
@hgy29 It would be good if the Gideros GUI could be modified directly from the code
actually I don't have a graphical UI builder yet.

I said something else
We command Print () - we can output the text to the console 'Output'.
And in defold there is a console 'Properties' in which you can create a text field in the console and output values from the program code, and then you can read the values from the text field in the console in the table lua /

It is hard for me to write in english, just follow the link:
https://defold.com/manuals/script-properties/?q=properties
This function is called go.property

oleg · October 2019

Sprite:hitTestPoint(x,y,shapeFlag)

shapeFlag - Is on or off by default?

hgy29 · October 2019

off by default

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