45 lines
1.3 KiB
TypeScript
45 lines
1.3 KiB
TypeScript
import Container = Phaser.GameObjects.Container;
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import type {Scene} from "phaser";
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import GameObject = Phaser.GameObjects.GameObject;
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import Rectangle = Phaser.GameObjects.Rectangle;
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export class SoundMeterSprite extends Container {
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private rectangles: Rectangle[] = new Array<Rectangle>();
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private static readonly NB_BARS = 20;
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constructor(scene: Scene, x?: number, y?: number, children?: GameObject[]) {
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super(scene, x, y, children);
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for (let i = 0; i < SoundMeterSprite.NB_BARS; i++) {
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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));
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this.add(rectangle);
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this.rectangles.push(rectangle);
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}
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}
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/**
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* A number between 0 and 100
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*
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* @param volume
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*/
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public setVolume(volume: number): void {
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const normalizedVolume = volume / 100 * SoundMeterSprite.NB_BARS;
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for (let i = 0; i < SoundMeterSprite.NB_BARS; i++) {
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if (normalizedVolume < i) {
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this.rectangles[i].alpha = 0.5;
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} else {
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this.rectangles[i].alpha = 1;
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}
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}
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}
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public getWidth(): number {
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return SoundMeterSprite.NB_BARS * 13;
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}
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}
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