Egret成语大挑战-场景关卡等级逻辑(三)


class SceneLevel extends eui.Component implements eui.UIComponent {
public btn_back: eui.Button;
public sc_level: eui.Scroller;
public gp_level: eui.Group;
public img_arrow: eui.Image; //箭头
// 声明数组 存放关卡按钮
private levelIcons: LevelIcon[] = [];
// 当前选择的关卡
private sel_levle: number;

private static shared: SceneLevel;
public static getInstance() {
if (!SceneLevel.shared) {
SceneLevel.shared = new SceneLevel();
}
return SceneLevel.shared;
}

public constructor() {
super();
}

protected partAdded(partName: string, instance: any): void {
super.partAdded(partName, instance);
}

protected childrenCreated(): void {
super.childrenCreated();
this.init();
}

private init() {
this.btn_back.addEventListener(egret.TouchEvent.TOUCH_TAP, this.backCallBack, this);
// scroller 关闭水平方向滚动
this.sc_level.scrollPolicyH = eui.ScrollPolicy.OFF;
//20行*10列
let col = 10;
let row = 20;
let icon_width = this.width / col;
let icon_height = this.height / row;

//创建icon的group添加到scroller上
let group: eui.Group = new eui.Group();
this.gp_level.addChild(group);
group.width = this.width;
// 每个icon的高度 * 总关卡数
group.height = icon_height * LevelDataManager.getInstance().totalLevels;

// 填充背景图
for (let i: number = 0; i < group.height / this.height; i++) {
let img_bg: eui.Image = new eui.Image(“GameBG2_jpg”);
img_bg.y = i * this.height;
this.gp_level.addChildAt(img_bg, 0);
}
//获取当前游戏的进度
let milestrone: number = LevelDataManager.getInstance().Milestone;

//设置关卡icon
for (let i: number = 0; i < LevelDataManager.getInstance().totalLevels; i++) {
let icon: LevelIcon = new LevelIcon();
group.addChild(icon);
icon.Level = i + 1;
icon.x = Math.sin(icon_height * i / 2 / 180 * Math.PI) * 200 + group.width / 2;
icon.y = group.height – icon_height * i – icon.height;
//给按钮添加点击事件回调
icon.addEventListener(egret.TouchEvent.TOUCH_TAP, this.onTapIcon, this);
//设置关卡按钮的状态 是否可以点击
icon.enabled = i < milestrone; // 把关卡按钮存入数组 this.levelIcons.push(icon); } //scroller滚动到底部 this.gp_level.scrollV = group.height – this.height; //让目前进度处于屏幕最上端（假设，我玩到了25关，让25关出现在最顶层） if (milestrone > 20) {
this.gp_level.scrollV = group.height – milestrone * icon_height;
}
//设置箭头位置
this.img_arrow.anchorOffsetX = this.img_arrow.width / 2;
this.img_arrow.anchorOffsetY = this.img_arrow.height;

let curretIcon: LevelIcon = this.levelIcons[milestrone – 1];
this.img_arrow.x = curretIcon.x + curretIcon.width / 2;
this.img_arrow.y = curretIcon.y;
//将箭头显示在最上层
this.gp_level.addChild(this.img_arrow);

//设置当前选择的关卡
this.sel_levle = milestrone;

}

private backCallBack() {
SoundManage.getInstance().playClick();
this.parent.addChild(SceneBegin.getInstance());
this.parent.removeChild(this);

}

/**
* 点击关卡按钮
*/

private onTapIcon(event) {
// 播放点击音效
SoundManage.getInstance().playClick();
// 获取当前点击的关卡
let tg_icon: LevelIcon = event.currentTarget;
this.sel_levle = tg_icon.Level;

// let currentLevel = LevelDataManager.getInstance().Milestone;

// 设置箭头的位置为当前点击关卡的位置
this.img_arrow.x = tg_icon.x + tg_icon.width / 2;
this.img_arrow.y = tg_icon.y;

// 跳转场景
this.parent.addChild( SceneGame.getInstance() );
this.parent.removeChild(this);
SceneGame.getInstance().initLevelData(tg_icon.Level);

}

public setMileStoneLevel(level: number) {

var icon = this.levelIcons[level – 1];
icon.enabled = true;
this.img_arrow.x = icon.x + icon.width / 2;
this.img_arrow.y = icon.y;

if (level > LevelDataManager.getInstance().Milestone) {
LevelDataManager.getInstance().Milestone = level;
}
}

}