開啟按鈕效果

官網點擊效果範例：https://pixijs.io/examples/#/basics/click.js
預設sprite是無法被點擊到的，因為要偵測這些事件會讓sprite更耗資源，因此如果我們想要讓一個sprite可以被點擊，則要特別對元件設定：

// Opt-in to interactivity
sprite.interactive = true;
// Shows hand cursor
sprite.buttonMode = true;
// Pointers normalize touch and mouse
sprite.on('pointerdown', onClick);
sprite.on('click', onClick); // mouse-only
sprite.on('tap', onClick); // touch-only

在連連看專案加入按鈕

ButtonBase

因為連連看裡面有許多個按鈕，每個按鈕雖然功能不同，但是會有許多相似的設定，因此將按鈕抽出一個ButtonBase的父類別
ButtonBase.ts的內容如下：

import Sprite = PIXI.Sprite;
import {Loader} from "../core/Loader";

export class ButtonBase extends Sprite{

    constructor(_id:string, textureID:string, _x:number, _y:number) {
        super();
        this.texture = Loader.resources[_id].textures[textureID];
        this.interactive = true;
        this.buttonMode = true;
        this.x = _x;
        this.y = _y;
        this.anchor.set(0.5);

        //按下效果
        this.on("mousedown", this.mouseDownEffect.bind(this));
        this.on("mouseup", this.mouseUpEffect.bind(this));
        this.on("mouseout", this.mouseOutEffect.bind(this));
        this.on("touchstart", this.mouseDownEffect.bind(this));
        this.on("touchend", this.mouseUpEffect.bind(this));
        
        this.on("mouseup", this.trigger.bind(this));
        this.on("touchend", this.trigger.bind(this));
    }
    public trigger(){
    }
    public mouseDownEffect():void{
    }
    public mouseUpEffect():void{
    }
    public mouseOutEffect():void{
    }
}

SoundBtn

新增一個檔案SoundBtn.ts，製作聲音開/關按鈕，內容如下：

import {ButtonBase} from "./ButtonBase";
import {Loader} from "../core/Loader";
import {SoundMgr} from "../core/SoundMgr";


export class SoundBtn extends ButtonBase {
    private isMute: boolean = false;
    constructor() {
        super('Button','Sound_On',50,170);
        this.updateImage();
        
    }
    public trigger(){
        this.isMute = !this.isMute;
        SoundMgr.mute(this.isMute);
        this.updateImage();
    }
    updateImage = ()=>{
        if (this.isMute){
            this.texture = this.texture = Loader.resources['Button'].textures['Sound_Off'];
        } else{
            this.texture = this.texture = Loader.resources['Button'].textures['Sound_On'];
        }
    }
    
}

GameScene

因為除了聲音按鈕外，要設定整個場景還需要加入非常多東西，因此我新增了一個類別叫GameScene，主要在將所有場景上的物件加進場景裡
GameScene.ts其內容如下

import {Loader} from "../core/Loader";
import {application} from "../Main";
import {SoundBtn} from "./SoundBtn";

export class GameScene {
    
    public static draw(){
        //加入背景
        application.stage.addChild(PIXI.Sprite.from(Loader.resources["background"].texture));
        //加入按鈕
        application.stage.addChild(new SoundBtn());
    }
}

實作靜音功能

在SoundMgr.ts加上靜音功能

static isMute: boolean = false;
public static mute(value:boolean):void {
    this.isMute = value;
    if (this.isMute) {
        //禁聲
        Howler.mute(true);
    } else {
        //出聲
        Howler.mute(false);
    }
}

今日成果

線上demo：http://claire-chang.com/ironman2018/1102/
檔案下載：ironman20181102