workadventure/front/src/Phaser/Components/SoundMeterSprite.ts

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2020-06-23 12:24:36 +02:00
import Container = Phaser.GameObjects.Container;
import {Scene} from "phaser";
import GameObject = Phaser.GameObjects.GameObject;
import Rectangle = Phaser.GameObjects.Rectangle;
export class SoundMeterSprite extends Container {
private rectangles: Rectangle[] = new Array<Rectangle>();
private static readonly NB_BARS = 20;
constructor(scene: Scene, x?: number, y?: number, children?: GameObject[]) {
super(scene, x, y, children);
for (let i = 0; i < SoundMeterSprite.NB_BARS; i++) {
const rectangle = new Rectangle(scene, i * 13, 0, 10, 20, (Math.round(255 - i * 255 / SoundMeterSprite.NB_BARS) << 8) + (Math.round(i * 255 / SoundMeterSprite.NB_BARS) << 16));
this.add(rectangle);
this.rectangles.push(rectangle);
}
}
/**
* A number between 0 and 100
*
* @param volume
*/
public setVolume(volume: number): void {
const normalizedVolume = volume / 100 * SoundMeterSprite.NB_BARS;
for (let i = 0; i < SoundMeterSprite.NB_BARS; i++) {
if (normalizedVolume < i) {
this.rectangles[i].alpha = 0.5;
} else {
this.rectangles[i].alpha = 1;
}
}
}
public getWidth(): number {
return SoundMeterSprite.NB_BARS * 13;
}
}