113 lines
2.9 KiB
JavaScript
113 lines
2.9 KiB
JavaScript
'use strict';
|
|
//活动对象构造
|
|
function Item(options){
|
|
options = options||{};
|
|
var _ = this;
|
|
var settings = {
|
|
x:0, //横坐标
|
|
y:0, //纵坐标
|
|
width:20, //宽
|
|
height:20, //高
|
|
type:1, //对象类型
|
|
status:1, //对象状态,1表示正常
|
|
orientation:0, //当前定位方向,0表示上,1表示右,2表示下,3表示左
|
|
vector:{ //目标坐标
|
|
x:0,
|
|
y:0
|
|
},
|
|
speed:1, //速度等级,1表示与刷新频率一致
|
|
update:function(){}, //更新参数信息
|
|
draw:function(){} //绘制
|
|
};
|
|
for(var i in settings){
|
|
_[i] = options[i]||settings[i];
|
|
}
|
|
}
|
|
//游戏对象
|
|
function Game(id,options){
|
|
var _ = this;
|
|
var _settings = {
|
|
name:'Pac-Man', //游戏名称
|
|
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
|
|
data:[]
|
|
},
|
|
fresh:100, //画布刷新频率,一秒10帧
|
|
audio:[], //音频资源
|
|
images:[], //图片资源
|
|
};
|
|
for(i in options){
|
|
_settings[i] = options[i];
|
|
}
|
|
var $canvas = document.getElementById(id);
|
|
$canvas.width = _settings.width;
|
|
$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 _t = 0; //内部计算器,交替帧数更新动画
|
|
var _hander = null; //画布更新
|
|
|
|
//开始画面
|
|
this.launch = function(){
|
|
_hander = setInterval(function(){
|
|
_t++;
|
|
var s = _t%4;
|
|
//清除画布
|
|
_context.clearRect(0,0,_settings.width,_settings.height);
|
|
//logo
|
|
_context.fillStyle = '#FC3';
|
|
_context.beginPath();
|
|
if(s<2){
|
|
_context.arc(_settings.width/2,_settings.height*.45,50,.20*Math.PI,1.80*Math.PI,false);
|
|
_context.lineTo(_settings.width/2,_settings.height*.45);
|
|
}else{
|
|
_context.arc(_settings.width/2,_settings.height*.45,50,.01*Math.PI,1.99*Math.PI,false);
|
|
_context.lineTo(_settings.width/2,_settings.height*.45);
|
|
}
|
|
_context.closePath();
|
|
_context.fill();
|
|
_context.fillStyle = '#000';
|
|
_context.beginPath();
|
|
_context.arc(_settings.width/2+5,_settings.height*.45-27,7,0,2*Math.PI,false);
|
|
_context.closePath();
|
|
_context.fill();
|
|
//游戏名
|
|
_context.font = 'bold 42px Helvetica';
|
|
_context.textAlign = 'center';
|
|
_context.textBaseline = 'middle';
|
|
_context.fillStyle = '#FFF';
|
|
_context.fillText(_settings.name,_settings.width/2,_settings.height*.618);
|
|
},_settings.fresh);
|
|
};
|
|
//动画停止
|
|
this.stop = function(){
|
|
_hander&&clearInterval(_hander);
|
|
};
|
|
//动画开始
|
|
this.start = function(){
|
|
_.stop();
|
|
_hander = setInterval(function(){ //定时刷新画布
|
|
_t++;
|
|
_items.forEach(function(item,index){
|
|
item.update(_t);
|
|
});
|
|
},_settings.fresh);
|
|
};
|
|
//添加对象
|
|
this.addItem = function(item){
|
|
_items.push(item);
|
|
};
|
|
//条件嗅探
|
|
this.render = function(){
|
|
|
|
};
|
|
//绘图
|
|
this.draw = function(){
|
|
|
|
};
|
|
} |