Xtend ColorAccessor v2

package net.dermetfan.someLibgdxTests.tween

import aurelienribon.tweenengine.Tween
import aurelienribon.tweenengine.TweenAccessor
import aurelienribon.tweenengine.TweenManager
import com.badlogic.gdx.graphics.Color

class ColorAccessor implements TweenAccessor<Color> {

    static final int R = 0
    static final int G = 1
    static final int B = 2
    static final int A = 3

    override getValues(Color target, int tweenType, float[] returnValues) {
        switch (tweenType) {
            case R: {
                returnValues.set(0, target.r)
                1
            }
            case G: {
                returnValues.set(0, target.g)
                1
            }
            case B: {
                returnValues.set(0, target.b)
                1
            }
            case A: {
                returnValues.set(0, target.a)
                1
            }
            default:
                -1
        }
    }

    override setValues(Color target, int tweenType, float[] newValues) {
        switch (tweenType) {
            case R:
                target.r = newValues.get(0)
            case G:
                target.g = newValues.get(0)
            case B:
                target.b = newValues.get(0)
            case A:
                target.a = newValues.get(0)
        }
    }

    def static void main(String[] args) {
        val manager = new TweenManager
        var color = new Color

        Tween.registerAccessor(Color, new ColorAccessor)
        Tween.to(color, R, 2).target(5).start(manager)

        for (i : 0 .. 1000) {
            manager.update(1 / 60f)
            println(color.r)
        }
    }

}