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updated 新增事件监听

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郑浩乐 2015-12-31 18:04:30 +08:00
parent 3b49e790c6
commit f85907d46d
1 changed files with 40 additions and 14 deletions
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54
pacman.js
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@ -1,4 +1,4 @@
// 'use strict';
'use strict';
//活动对象构造
function Item(options){
options = options||{};
@ -27,19 +27,18 @@ function Item(options){
function Game(id,options){
var _ = this;
var _settings = {
name:'Pac-Man', //游戏名称
name:'Pac-Man', //游戏名称
copyright:'passer-by.com', //版权信息
width:960, //画布宽度
height:640, //画布高度
map:{ //地图信息
x:0, //地图起点坐标
width:960, //画布宽度
height:640, //画布高度
map:{ //地图信息
x:0, //地图起点坐标
y:0,
size:20, //地图单元的宽度
size:20, //地图单元的宽度
data:[]
},
fresh:100, //画布刷新频率,一秒10帧
audio:[], //音频资源
images:[], //图片资源
audio:[], //音频资源
images:[], //图片资源
};
for(i in options){
_settings[i] = options[i];
@ -49,8 +48,8 @@ function Game(id,options){
$canvas.height = _settings.height;
var _context = $canvas.getContext('2d'); //画布上下文环境
var _items = []; //动画对象队列
var _status = 0; //页面状态
var _hander = null; //画布更新
var _status, //页面状态
_hander; //画布更新
//动画开始
this.startAnimate = function(callback,frame){
frame = frame||1;
@ -59,6 +58,7 @@ function Game(id,options){
var fn = function(){
t++;
if(!(t%frame)){
_context.clearRect(0,0,_settings.width,_settings.height); //清除画布
callback(t/frame);
}
_hander = requestAnimationFrame(fn);
@ -71,11 +71,18 @@ function Game(id,options){
var cancelAnimationFrame = window.cancelAnimationFrame || window.webkitCancelAnimationFrame||window.mozCancelAnimationFrame ||window.msCancelAnimationFrame;
_hander&&cancelAnimationFrame(_hander);
};
//事件坐标
this.windowToCanvas = function(x,y){
var box = $canvas.getBoundingClientRect();
return {
x:x-box.left*(_settings.width/box.width),
y:y-box.top*(_settings.height/box.height)
};
}
//开始画面
this.launch = function(){
_status = 0;
_.startAnimate(function(t){
//清除画布
_context.clearRect(0,0,_settings.width,_settings.height);
//logo
_context.fillStyle = '#FC3';
_context.beginPath();
@ -107,6 +114,14 @@ function Game(id,options){
_context.fillText('© '+_settings.copyright,_settings.width-12,_settings.height-5);
},10);
};
//开始游戏
this.start = function(){
_status = 1;
_.startAnimate(function(){
},10);
};
//更新画布
this.update = function(){
_startAnimate(function(t){
_items.forEach(function(item,index){
@ -127,4 +142,15 @@ function Game(id,options){
};
//事件
//鼠标点击事件
$canvas.addEventListener('mousedown',function(e){
var position = _.windowToCanvas(e.clientX,e.clientY);
if(!_status){
_.start();
}
});
$canvas.addEventListener('mouseup',function(e){
var position = _.windowToCanvas(e.clientX,e.clientY);
//React to the mouse down event
});
}