Gideros 2025.10

hgy29 · October 17

Hello,

A new Gideros version is available, mainly focused on performance improvements in specific cases.

Full change log:
Improvements
[gfx/sprite] new 'addChildrenAt' call to add several children to specific positions inside a sprite in one call (faster)
[gfx/particles] addParticles is much more efficient with a lot of particles
[export/html5] Change code to support WASM64 (not yet enabled)
[layout] getLayoutContsraints, getLayoutParameters and getLayoutInfo now accept a mask of needed values in return for faster processing
[styling] More color operations in styles

Fixes
[export/html5] Fix some existing files not replaced on export
[plugin/tts] Use correct lua context in callbacks
[Library] Fix 3D library shader

Download it from here:
http://giderosmobile.com/download

MoKaLux · October 17

awesome, thank you hgy29

will update the wiki to the best of my ability asap, God's willing!

hgy29 · October 17

Yes @MoKaLux, I didn't explain how to use those new functions.
Sprite:addChildrenAt() takes a single argument, a table with keys indicating the position where to add a new child, and values the children themselves.
Exemple:

 parentSprite:addChildrenAt({1=child1, 3=child3})

hgy29 · October 17

Another example for Sprite:getLayoutParameters()

-- Return a table containing only the computed cellSpacingY of the layout, instead of returning everything
local lp=sprite:getLayoutParameters(true,Sprite.LayoutKeys.cellSpacingY)

MoKaLux · October 17

hgy29 said:

Exemple:

 parentSprite:addChildrenAt({1=child1, 3=child3})

I tried but got this instead

local sprite = Sprite.new()
local pix = Pixel.new(0x0000ff, 1, 32, 32)
pix2 = pix:clone()
pix3 = pix:clone()
pix2:setColor(0xff0000)
pix3:setColor(0x00ff00)
-- position
pix:setPosition(1*32, 1*32)
pix2:setPosition(1.5*32, 1.5*32)
pix3:setPosition(2*32, 2*32)
-- order
sprite:addChild(pix)
-- Expected '}' (to close '{' at column 22), got '='
--parentSprite:addChildrenAt({1=child1, 3=child3}) -- not ok
--sprite:addChildrenAt( { 2=pix3, 3=pix2 } ) -- not ok
--sprite:addChildrenAt { 2=pix3, 3=pix2 } -- not ok
 
local pixs = {}
pixs[1] = pix3
pixs[3] = pix2
sprite:addChildrenAt( pixs ) -- OK
 
stage:addChild(sprite)

hgy29 · October 17

Example for new 'brightness' operator in style tables:

local stageStyle={
	baseColor=ColorValue(0.7,0.6,0,1)
}
 
local spriteStyle={
	__Parent=stageStyle, --Inherits from 'stageStyle'
	color1="=baseColor:brightness:1.1",
	color2="=baseColor:brightness:0.8",
}
for x=1,4 do
	for y=1,4 do
		local gradient=Pixel.new(0xFFFFFF,1,32,32)
		gradient:setPosition(x*32,y*32)
		gradient:setStyle(spriteStyle)
		gradient:setColor("color"..(1+((x+y)%2)))
		stage:addChild(gradient)
	end
end
 
stage:addEventListener(Event.MOUSE_DOWN,function() 
	stageStyle.baseColor=ColorValue(math.random(),math.random(),math.random(),1)
	stage:setStyle(stageStyle,true)
end)

hgy29 · October 17

@MoKaLux,

Sorry right syntax was probably:

 parentSprite:addChildrenAt({[1]=child1, [3]=child3})

hgy29 · October 17

There was a little bug in the binaries, I have updated them a few minutes ago. If you already downloaded them, the new style functions weren't completely correct.

hgy29 · October 17

Also, Sprite:addChildrenAt() can also be used like this:

parent:addChildrenAt({ child1, child2, child3 })

MoKaLux · October 18

ok I added a couple of the new functions (plus some more)

:
- Sprite:setHiddenChildren
- Sprite:isOnStage
- Sprite:setStyle
- Sprite:resolveStyle
- Sprite:addChildrenAt

Those are missing because I couldn't wrap my head around them

:
- sprite:setWorldAlign
- sprite:updateStyle (is this one actually really easy?)
- sprite:spriteToLocalMatrix

Viva Gideros!

hgy29 · October 18

Sprite:setWorldAlign(boolean) instructs Gideros to align the Sprite position on a screen pixel. This is useful for Textfields since it makes the text look more sharp.
Sprite:spriteToLocalMatrix(otherSprite) returns a Matrix that transforms a coordinate in otherSprite space into a coordinate in current sprite space.

Sprite:updateStyle() performs what need to be done when the style table of a Sprite has changed. It is called automatically by Gideros or when application:applyStyles() is called.
It can be overriden by your own classes if needed, so it is lua visible so that you can call it in such cases.

MobAmuse · October 21

Using latest Android Studio Narwhal (API 36.1) and latest updates results in gradle build problems on Android export...

Android Studio Narwhal 4 Feature Drop | 2025.1.4
Build #AI-251.27812.49.2514.14217341, built on October 6, 2025

---

[Incubating] Problems report is available at: file:///C:/Temp/Dweebs/tmp/build/reports/problems/problems-report.html

Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

For more on this, please refer to https://docs.gradle.org/8.13/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.

FAILURE: Build completed with 2 failures.

1: Task failed with an exception.
-----------
* Where:
Build file 'C:\Temp\Dweebs\tmp\app\build.gradle' line: 4

* What went wrong:
A problem occurred evaluating project ':app'.
> Value is null

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
==============================================================================

2: Task failed with an exception.
-----------
* What went wrong:
A problem occurred configuring project ':app'.
> Android Gradle Plugin: project ':app' does not specify `compileSdk` in build.gradle (C:\Temp\Dweebs\tmp\app\build.gradle).

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
==============================================================================

BUILD FAILED in 4s
Exec returned: 1
Export failed! See details above.

hgy29 · October 21

MobAmuse said:

* What went wrong:
A problem occurred evaluating project ':app'.
> Value is null

Gideros does set 'compileSdkVersion' in the build.gradle if it was able to find it. I will investigate further.

test29 · October 29

Me too have the same problem.

A problem occurred configuring project ':app'.
> Android Gradle Plugin: project ':app' does not specify `compileSdk` in build.gradle

test29 · October 30

I found what's the problem.
In export project you must fill Android SDK version (optional) too.

MobAmuse · November 5

@test29 That works great thank you!

hgy29 · November 6

@MobAmuse, @test29,

Problem spotted, I pushed a fix in Gideros for that

MobAmuse · November 12

@hgy29 Awesome thank you

John · November 12

When I export to html and run it in firefox / mac I get splash screen and spinning gideros icon. I get the following error: Loading failed for the with source “localhost:8888/gideros-wasm.js”. That file not exported. It doesn't work with previous version either so it is not a new problem.

John · November 12

OK - Found a workaround that works. It happens when you check the enable PWA and compressed files. If you uncheck both of them it works. I haven't narrowed it down to specific checkbox as the cause but it one of those 2.

hgy29 · November 12

We should remove compression mode anyhow. Most web servers do perform gzip compression on the fly and some android devices tinker with the .png that holds compressed data.

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