Lerp in flambe

[mgr...@teravisiongames.com]

Hi all!!, is there any function in the flambe framework that simulates the Unity's Lerp function?

Best Regards

[Martin Parent]

No but you can create your own Math Utils class and add the lerp function to it:

public static function lerp(start:Float, end:Float, percent:Float):Float
{
    if (start == end)
    {
        return start;
    }
    return (end - start) * percent + start;
}

[Marcos Grillo]

Thanks!, I used a slighter different implementation

public static function lerp(start:Float, end:Float, percent:Float):Float

{

    return start + (percent*(end - start));

}

--

Ing. Marcos Grillo

[Mark Knol]

If you want to take deltatime in account, you might want to use this:

    inline public static function lerpMoveTo(from:Float, to:Float, deltaTime:Float, duration:Float):Float {

      return (to - from) * (1 - Math.pow(0.01, deltaTime / duration));

    }

With this you can use it like this:

    override public function onUpdate(dt:Float) {

      var sprite = owner.get(Sprite);

      sprite.x._ += lerpMoveTo(sprite.x._, targetX, dt, 4);

      sprite.y._ += lerpMoveTo(sprite.y._, targetY, dt, 4);

    }

Enjoy your day!

[Marcos Grillo]

That looks nice, thanks Mark!!!

--

Ing. Marcos Grillo