FlxSprite graphic angular vibration

[puggsoy]

Hey, anyone know a way to edit a FlxSprite's graphic's angle? In particular I want to make it vibrate, but I can't use the FlxSprite's angle property itself because I'm using that to determine movement and such. I just want the graphic to vibrate as a purely cosmetic effect.

Is there a way to do this? I didn't find an angle property on FlxSprite.graphic. I'm using the dev branch on GitHub, by the way.

[SruloArt]

Try "FlxFrameAngle"...

[Gama11]

I don't see any reason why you couldn't FlxSprite#angle for both.

[puggsoy]

As I said, the movement is dependant on the angle. I only want the sprite to vibrate visually, I don't want it to move back and forth along with it.

I tried FlxSprite.frame.angle, but that's a FlxFrameAngle as opposed to a Float or something. I'm unsure how to create or modify it. This is how the type is defined:

@:enum
abstract FlxFrameAngle(Int) from Int to Int
{
    var ANGLE_0            = 0;
    var ANGLE_90        = 90;
    var ANGLE_NEG_90    = -90;
    var ANGLE_270        = -90;
}

I'm unfamiliar with abstracts but it looks like a sort of enum, which isn't much help.

[Gama11]

I'm not sure what exactly you're going for. If you change the angle of the graphic, it's obviously going to move.

[puggsoy]

What I mean is, in update() I modify the sprite's x and y depending on its angle property. This is fine, since I change the angle in-game using the mouse or whatever.

However, in addition I want to give the graphic a little vibration. However I don't want this vibration to affect the x and y values. I can't use FlxSprite.angle since that's what I use for determining how to move the x and y.

[Gama11]

Just keep a backup of the "real" angle and add some noise on top of that?

package;

import flixel.FlxG;

import flixel.FlxSprite;

import flixel.FlxState;

using flixel.util.FlxSpriteUtil;

class PlayState extends FlxState

{

var realAngle = 0;

var sprite:FlxSprite;

override public function create():Void

{

sprite = new FlxSprite();

sprite.makeGraphic(100, 100);

sprite.screenCenter();

add(sprite);

}

override public function update():Void 

{

super.update();

realAngle += Std.int(100 * FlxG.elapsed);

sprite.angle = realAngle + Math.sin(FlxG.game.ticks) * 4;

}

}

[puggsoy]

Hmm, good idea. Not exactly sure why I didn't think of that myself. Thanks!

Also, the ticks is a good way to add noise, I actually wasn't aware of that.