import {Component, ElementRef, ViewChild, OnInit, Input, OnDestroy, HostListener} from '@angular/core';
import {
Label,
MySprite, tweenChange,
} from './Unit';
import {res, resAudio} from './resources';
import {Subject} from 'rxjs';
import {debounceTime} from 'rxjs/operators';
import TWEEN from '@tweenjs/tween.js';
@Component({
selector: 'app-play',
templateUrl: './play.component.html',
styleUrls: ['./play.component.css']
})
export class PlayComponent implements OnInit, OnDestroy {
@ViewChild('canvas', {static: true }) canvas: ElementRef;
@ViewChild('wrap', {static: true }) wrap: ElementRef;
// 数据
data;
ctx;
canvasWidth = 1280; // canvas实际宽度
canvasHeight = 720; // canvas实际高度
canvasBaseW = 1280; // canvas 资源预设宽度
canvasBaseH = 720; // canvas 资源预设高度
mx; // 点击x坐标
my; // 点击y坐标
// 资源
rawImages = new Map(res);
rawAudios = new Map(resAudio);
images = new Map();
animationId: any;
winResizeEventStream = new Subject();
audioObj = {};
renderArr;
mapScale = 1;
canvasLeft;
canvasTop;
saveKey = 'test_0011';
btnLeft;
btnRight;
pic1;
pic2;
canTouch = true;
curPic;
@HostListener('window:resize', ['$event'])
onResize(event) {
this.winResizeEventStream.next();
}
ngOnInit() {
this.data = {};
// 获取数据
const getData = (<any> window).courseware.getData;
getData((data) => {
if (data && typeof data == 'object') {
this.data = data;
}
// console.log('data:' , data);
// 初始化 各事件监听
this.initListener();
// 若无数据 则为预览模式 需要填充一些默认数据用来显示
this.initDefaultData();
// 初始化 音频资源
this.initAudio();
// 初始化 图片资源
this.initImg();
// 开始预加载资源
this.load();
}, this.saveKey);
}
ngOnDestroy() {
window['curCtx'] = null;
window.cancelAnimationFrame(this.animationId);
}
load() {
// 预加载资源
this.loadResources().then(() => {
window["air"].hideAirClassLoading(this.saveKey, this.data);
this.init();
this.update();
});
}
init() {
this.initCtx();
this.initData();
this.initView();
}
initCtx() {
this.canvasWidth = this.wrap.nativeElement.clientWidth;
this.canvasHeight = this.wrap.nativeElement.clientHeight;
this.canvas.nativeElement.width = this.wrap.nativeElement.clientWidth;
this.canvas.nativeElement.height = this.wrap.nativeElement.clientHeight;
this.ctx = this.canvas.nativeElement.getContext('2d');
this.canvas.nativeElement.width = this.canvasWidth;
this.canvas.nativeElement.height = this.canvasHeight;
window['curCtx'] = this.ctx;
}
updateItem(item) {
if (item) {
item.update();
}
}
updateArr(arr) {
if (!arr) {
return;
}
for (let i = 0; i < arr.length; i++) {
arr[i].update(this);
}
}
initListener() {
this.winResizeEventStream
.pipe(debounceTime(500))
.subscribe(data => {
this.renderAfterResize();
});
// ---------------------------------------------
const setParentOffset = () => {
const rect = this.canvas.nativeElement.getBoundingClientRect();
this.canvasLeft = rect.left;
this.canvasTop = rect.top;
};
const setMxMyByTouch = (event) => {
if (event.touches.length <= 0) {
return;
}
if (this.canvasLeft == null) {
setParentOffset();
}
this.mx = event.touches[0].pageX - this.canvasLeft;
this.my = event.touches[0].pageY - this.canvasTop;
};
const setMxMyByMouse = (event) => {
this.mx = event.offsetX;
this.my = event.offsetY;
};
// ---------------------------------------------
let firstTouch = true;
const touchDownFunc = (e) => {
if (firstTouch) {
firstTouch = false;
removeMouseListener();
}
setMxMyByTouch(e);
this.mapDown(e);
};
const touchMoveFunc = (e) => {
setMxMyByTouch(e);
this.mapMove(e);
};
const touchUpFunc = (e) => {
setMxMyByTouch(e);
this.mapUp(e);
};
const mouseDownFunc = (e) => {
if (firstTouch) {
firstTouch = false;
removeTouchListener();
}
setMxMyByMouse(e);
this.mapDown(e);
};
const mouseMoveFunc = (e) => {
setMxMyByMouse(e);
this.mapMove(e);
};
const mouseUpFunc = (e) => {
setMxMyByMouse(e);
this.mapUp(e);
};
const element = this.canvas.nativeElement;
const addTouchListener = () => {
element.addEventListener('touchstart', touchDownFunc);
element.addEventListener('touchmove', touchMoveFunc);
element.addEventListener('touchend', touchUpFunc);
element.addEventListener('touchcancel', touchUpFunc);
};
const removeTouchListener = () => {
element.removeEventListener('touchstart', touchDownFunc);
element.removeEventListener('touchmove', touchMoveFunc);
element.removeEventListener('touchend', touchUpFunc);
element.removeEventListener('touchcancel', touchUpFunc);
};
const addMouseListener = () => {
element.addEventListener('mousedown', mouseDownFunc);
element.addEventListener('mousemove', mouseMoveFunc);
element.addEventListener('mouseup', mouseUpFunc);
};
const removeMouseListener = () => {
element.removeEventListener('mousedown', mouseDownFunc);
element.removeEventListener('mousemove', mouseMoveFunc);
element.removeEventListener('mouseup', mouseUpFunc);
};
addMouseListener();
addTouchListener();
}
playAudio(key, now = false, callback = null) {
const audio = this.audioObj[key];
if (audio) {
if (now) {
audio.pause();
audio.currentTime = 0;
}
if (callback) {
audio.onended = () => {
callback();
};
}
audio.play();
}
}
loadResources() {
const pr = [];
this.rawImages.forEach((value, key) => {// 预加载图片
const p = this.preload(value)
.then(img => {
this.images.set(key, img);
})
.catch(err => console.log(err));
pr.push(p);
});
this.rawAudios.forEach((value, key) => {// 预加载音频
const a = this.preloadAudio(value)
.then(() => {
// this.images.set(key, img);
})
.catch(err => console.log(err));
pr.push(a);
});
return Promise.all(pr);
}
preload(url) {
return new Promise((resolve, reject) => {
const img = new Image();
// img.crossOrigin = "anonymous";
img.onload = () => resolve(img);
img.onerror = reject;
img.src = url;
});
}
preloadAudio(url) {
return new Promise((resolve, reject) => {
const audio = new Audio();
audio.oncanplay = (a) => {
resolve();
};
audio.onerror = () => {
reject();
};
audio.src = url;
audio.load();
});
}
renderAfterResize() {
this.canvasWidth = this.wrap.nativeElement.clientWidth;
this.canvasHeight = this.wrap.nativeElement.clientHeight;
this.init();
}
checkClickTarget(target) {
const rect = target.getBoundingBox();
if (this.checkPointInRect(this.mx, this.my, rect)) {
return true;
}
return false;
}
getWorlRect(target) {
let rect = target.getBoundingBox();
if (target.parent) {
const pRect = this.getWorlRect(target.parent);
rect.x += pRect.x;
rect.y += pRect.y;
}
return rect;
}
checkPointInRect(x, y, rect) {
if (x >= rect.x && x <= rect.x + rect.width) {
if (y >= rect.y && y <= rect.y + rect.height) {
return true;
}
}
return false;
}
addUrlToAudioObj(key, url = null, vlomue = 1, loop = false, callback = null) {
const audioObj = this.audioObj;
if (url == null) {
url = key;
}
this.rawAudios.set(key, url);
const audio = new Audio();
audio.src = url;
audio.load();
audio.loop = loop;
audio.volume = vlomue;
audioObj[key] = audio;
if (callback) {
audio.onended = () => {
callback();
};
}
}
addUrlToImages(url) {
this.rawImages.set(url, url);
}
// ======================================================编写区域==========================================================================
/**
* 添加默认数据 便于无数据时的展示
*/
initDefaultData() {
if (!this.data.pic_url) {
this.data.pic_url = 'assets/play/default/pic.jpg';
this.data.pic_url_2 = 'assets/play/default/pic.jpg';
}
}
/**
* 添加预加载图片
*/
initImg() {
this.addUrlToImages(this.data.pic_url);
this.addUrlToImages(this.data.pic_url_2);
}
/**
* 添加预加载音频
*/
initAudio() {
// 音频资源
this.addUrlToAudioObj(this.data.audio_url);
this.addUrlToAudioObj(this.data.audio_url_2);
// 音效
this.addUrlToAudioObj('click', this.rawAudios.get('click'), 0.3);
}
/**
* 初始化数据
*/
initData() {
const sx = this.canvasWidth / this.canvasBaseW;
const sy = this.canvasHeight / this.canvasBaseH;
const s = Math.min(sx, sy);
this.mapScale = s;
// this.mapScale = sx;
// this.mapScale = sy;
this.renderArr = [];
}
/**
* 初始化试图
*/
initView() {
this.initPic();
this.initBottomPart();
}
initBottomPart() {
const btnLeft = new MySprite();
btnLeft.init(this.images.get('btn_left'));
btnLeft.x = this.canvasWidth - 150 * this.mapScale;
btnLeft.y = this.canvasHeight - 100 * this.mapScale;
btnLeft.setScaleXY(this.mapScale);
this.renderArr.push(btnLeft);
this.btnLeft = btnLeft;
const btnRight = new MySprite();
btnRight.init(this.images.get('btn_right'));
btnRight.x = this.canvasWidth - 50 * this.mapScale;
btnRight.y = this.canvasHeight - 100 * this.mapScale;
btnRight.setScaleXY(this.mapScale);
this.renderArr.push(btnRight);
this.btnRight = btnRight;
}
initPic() {
const maxW = this.canvasWidth * 0.7;
const pic1 = new MySprite();
pic1.init(this.images.get(this.data.pic_url));
pic1.x = this.canvasWidth / 2;
pic1.y = this.canvasHeight / 2;
pic1.setScaleXY(maxW / pic1.width);
this.renderArr.push(pic1);
this.pic1 = pic1;
const label1 = new Label();
label1.text = this.data.text;
label1.textAlign = 'center';
label1.fontSize = 50;
label1.fontName = 'BRLNSDB';
label1.fontColor = '#ffffff';
pic1.addChild(label1);
const pic2 = new MySprite();
pic2.init(this.images.get(this.data.pic_url_2));
pic2.x = this.canvasWidth / 2 + this.canvasWidth;
pic2.y = this.canvasHeight / 2;
pic2.setScaleXY(maxW / pic2.width);
this.renderArr.push(pic2);
this.pic2 = pic2;
this.curPic = pic1;
}
btnLeftClicked() {
this.lastPage();
}
btnRightClicked() {
this.nextPage();
}
lastPage() {
if (this.curPic == this.pic1) {
return;
}
this.canTouch = false;
const moveLen = this.canvasWidth;
tweenChange(this.pic1, {x: this.pic1.x + moveLen}, 1);
tweenChange(this.pic2, {x: this.pic2.x + moveLen}, 1, () => {
this.canTouch = true;
this.curPic = this.pic1;
});
}
nextPage() {
if (this.curPic == this.pic2) {
return;
}
this.canTouch = false;
const moveLen = this.canvasWidth;
tweenChange(this.pic1, {x: this.pic1.x - moveLen}, 1);
tweenChange(this.pic2, {x: this.pic2.x - moveLen}, 1, () => {
this.canTouch = true;
this.curPic = this.pic2;
});
}
pic1Clicked() {
this.playAudio(this.data.audio_url);
}
pic2Clicked() {
this.playAudio(this.data.audio_url_2);
}
mapDown(event) {
if (!this.canTouch) {
return;
}
if ( this.checkClickTarget(this.btnLeft) ) {
this.btnLeftClicked();
return;
}
if ( this.checkClickTarget(this.btnRight) ) {
this.btnRightClicked();
return;
}
if ( this.checkClickTarget(this.pic1) ) {
this.pic1Clicked();
return;
}
if ( this.checkClickTarget(this.pic2) ) {
this.pic2Clicked();
return;
}
}
mapMove(event) {
}
mapUp(event) {
}
update() {
// ----------------------------------------------------------
this.animationId = window.requestAnimationFrame(this.update.bind(this));
// 清除画布内容
this.ctx.clearRect(0, 0, this.canvasWidth, this.canvasHeight);
// tween 更新动画
TWEEN.update();
// ----------------------------------------------------------
this.updateArr(this.renderArr);
}
}