static/js/index.js

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function Ship(ctx){
	gameMonitor.im.loadImage(['static/img/player.png']);
	this.width = 80;
	this.height = 80;
	this.left = gameMonitor.w/2 - this.width/2;
	this.top = gameMonitor.h - 2*this.height;
	this.player = gameMonitor.im.createImage('static/img/player.png');

	this.paint = function(){
		ctx.drawImage(this.player, this.left, this.top, this.width, this.height);
	}

	this.setPosition = function(event){
		if(gameMonitor.isMobile()){
			var tarL = event.changedTouches[0].clientX;
			var tarT = event.changedTouches[0].clientY;
		}
		else{
			var tarL = event.offsetX;
			var tarT = event.offsetY;
		}
		this.left = tarL - this.width/2 - 16;
		this.top = tarT - this.height/2;
		if(this.left<0){
			this.left = 0;
		}
		if(this.left>320-this.width){
			this.left = 320-this.width;
		}
		if(this.top<0){
			this.top = 0;
		}
		if(this.top>gameMonitor.h - this.height){
			this.top = gameMonitor.h - this.height;
		}
		this.paint();
	}

	this.controll = function(){
		var _this = this;
		var stage = $('#gamepanel');
		var currentX = this.left,
			currentY = this.top,
			move = false;
		stage.on(gameMonitor.eventType.start, function(event){
			_this.setPosition(event);
			move = true;
		}).on(gameMonitor.eventType.end, function(){
			move = false;
		}).on(gameMonitor.eventType.move, function(event){
			event.preventDefault();
			if(move){
				_this.setPosition(event);	
			}
			
		});
	}

	this.eat = function(foodlist){
		for(var i=foodlist.length-1; i>=0; i--){