I thought it would help implement an efficient collision detection... I have entities located in a rectangular cell in the world, and I need to check whether the player is in the same cell of one of them (and need to know which one).

EDIT: thanks for pointing out it's an internal class.

Hi all,

Could anyone point to or provide an example of usage of FlxQuadTree? I could not find any so far.

Thanks!

One last detail: this was useful on Windows. On Linux, audio will work even if there is no speaker plugged in.

Thanks @DleanJeans. The FlxAsyncLoop example you provide works well.

Hi all,

Has anyone a working example using FlxUILoadingScreen?

It's for a FlxUIState .create() method which is a bit long. Ideally I would like to do the whole thing in one fuction (create()), where I would create the FlxUILoadingScreen substate, refresh the screen/update, do a bit of work, set 10% progress, refresh/update, do a bit more work, set 20%, etc.

Tried something like that but it did not work (black screen):

@:access(flixel.FlxGame)
override public function create():Void {
  super.create()
  loading = new FlxUILoadingScreen(FlxColor.GREEN);
  openSubState(loading);

  FlxG.game.step();
  FlxG.game.draw();

  ...
  loading.set(0.1);
  FlxG.game.step();
  FlxG.game.draw();

  ...

Thanks!

Ok, I think the following correctly catches errors related to the sound system:

@:access(flixel.system.frontEnds.SoundFrontEnd.update)
static public function play(soundId:String) {
  if (!enabled) return;
  var sound:FlxSound = FlxG.sound.load(FlxG.sound.cache(soundId), 1, false, false);
  try {
    sound.play();
    FlxG.sound.update(0); /* This will fail and be caught if there is an issue with sounds (like no audio device present) */
  } catch (e:Dynamic) {
    trace('Warning: Failed to play $soundId, disabling sounds');
    enabled = false;
    sound.stop();
  }
}

The key is to call FlxG.sound.update(0), because sound.play() will happily continue even if there is an error in the AL library. The crash will happen later, during the update. Calling the update here does not seem to cause adverse effects. Calling sound.stop() ensures that from that point on the game loop calling FlxG.sound.update() will not cause a crash.

If anyone knows a cleaner way to do this please let me know.

Hi all, when loading sounds on Windows I get "AL lib: (EE) MMDevApiOpenPlayback: Device init failed: 0x80070490" when there is no audio device plugged in.

In this case, sound objects loaded with FlxG.sound.cache() + FlxG.sound.load() appear valid, but will crash the application when calling play() on them (more precisely: it's an "Invalid operation (/)" "Called from flixel.system.FlxSound::update line 258")

Is there a way to determine when the underlying sound system is not working properly? I would like to disable sounds in this case, rather than crashing.

Edit: haxe 3.3.0, haxeflixel 4.1.1, lime: 2.9.1, openfl: 3.6.1

Thanks!