作为一个前端小白，有一个热爱学习的心。对游戏开发有这深刻的兴趣，将围住神经猫游戏开发的源码，分享一下。
或许很多人没有听说过这款游戏，游戏思路很简单，就是让这只猫无路可走。
就类似这样一个页面，直到让这只猫无路可走。
我并没有找到这只猫的图片，随意我用另一种颜色的球来代替，模拟这只猫。主要用了canvas，面向对象，以及一些简单的逻辑。
并且引了一个基于canvas开发的easeljs框架，可以去网站去下载一下http://createjs.com/
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
</style>
<script src="js/easeljs-0.8.2.min.js" type="text/javascript" charset="utf-8"></script>
<script src="js/Circle.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<canvas id="gameView" width="800px" height="800px"></canvas>
<script src="js/app.js" type="text/javascript" charset="utf-8"></script>
</body>
</html>
Circle.js
function Circle(){
createjs.Shape.call(this);
this.setCircleType = function(type){
this._circleType = type;
switch (type){
//没有点击过的颜色
case Circle.TYPE_UNSELECTED:
this.setColor("#cccccc");
break;
//点击过的颜色
case Circle.TYPE_SELECTED:
this.setColor("#ff6600");
break;
//猫的颜色
case Circle.TYPE_CAT:
this.setColor("#0000ff");
break;
}
}
this.setColor = function(colorString){
this.graphics.beginFill(colorString);
this.graphics.drawCircle(0,0,25);
this.graphics.endFill();
}
this.getCircleType = function(){
return this._circleType;
}
this.setCircleType(1);
}
Circle.prototype = new createjs.Shape();
//三种状态 表示 一个为点击之后的 一个点击之前 一个是猫
Circle.TYPE_UNSELECTED = 1;
Circle.TYPE_SELECTED = 2;
Circle.TYPE_CAT = 3;
app.js
var stage = new createjs.Stage("gameView");
createjs.Ticker.setFPS(30);
createjs.Ticker.addEventListener("tick",stage);
var gameView = new createjs.Container();
gameView.x = 30;
gameView.y = 30;
stage.addChild(gameView);
var circleArr = [[],[],[],[],[],[],[],[],[]];
var currentCat;
//定义7种状态 表示 移动位置
var MOVE_NONE = -1,MOVE_LEFT = 0,MOVE_UP_LEFT = 1,MOVE_UP_RIGHT = 2,MOVE_RIGHT = 3,MOVE_DOWN_RIGHT = 4,MOVE_DOWN_LEFT = 5;
function getMoveDir(cat){
//分别判断能走的位置
var distanceMap = [];
//left
var can = true;
for (var x = cat.indexX;x>=0;x--) {
if(circleArr[x][cat.indexY].getCircleType() == Circle.TYPE_SELECTED){
can = false;
distanceMap[MOVE_LEFT] = cat.indexX - x;
break;
}
}
if(can){
return MOVE_LEFT;
}
//left up
can =true;
var x = cat.indexX , y = cat.indexY;
while(true){
if(circleArr[x][y].getCircleType() == Circle.TYPE_SELECTED){
can = false;
distanceMap[MOVE_UP_LEFT] = can.indexY-y;
break;
}
if(y%2 == 0){
x--;
}
y--;
if(y<0 ||x<0){
break;
}
}
if(can){
return MOVE_UP_LEFT;
}
//right up
can =true;
var x = cat.indexX , y = cat.indexY;
while(true){
if(circleArr[x][y].getCircleType() == Circle.TYPE_SELECTED){
can = false;
distanceMap[MOVE_UP_RIGHT] = can.indexY-y;
break;
}
if(y%2 == 1){
x++;
}
y--;
if(y <0||x>8){
break;
}
}
if(can){
return MOVE_UP_RIGHT;
}
//right
can =true;
for (var x= cat.indexX;x<9;x++) {
if(circleArr[x][cat.indexY].getCircleType() == Circle.TYPE_SELECTED){
can =false;
distanceMap[MOVE_RIGHT] = x -cat.indexX;
break;
}
}
if(can){
return MOVE_RIGHT;
}
//ritht down
can = true;
x= cat.indexX,y = cat.indexY;
while(true){
if(circleArr[x][y].getCircleType() == Circle.TYPE_SELECTED){
can =false;
distanceMap[MOVE_DOWN_RIGHT] = y -cat.indexY;
break;
}
if(y%2 == 1){
x++;
}
y++;
if(y>8 ||x>8){
break;
}
}
if(can){
return MOVE_DOWN_RIGHT;
}
//left down
can = true;
x= cat.indexX,y = cat.indexY;
while(true){
if(circleArr[x][y].getCircleType() == Circle.TYPE_SELECTED){
can = false;
distanceMap[MOVE_DOWN_LEFT] = y -cat.index;
break;
}
if(y%2 == 0){
x--;
}
y++;
if(y>8 || x<0){
break;
}
}
if(can){
return MOVE_DOWN_LEFT;
}
var maxDir = -1,maxValue = -1;
for (var dir = 0;dir<distanceMap.length;dir++) {
if(distanceMap[dir]>maxValue){
maxValue = distanceMap[dir];
maxDir = dir;
}
}
if(maxValue > 1){
return maxDir;
}else{
return MOVE_NONE;
}
}
function circleClicked(event){
if(event.target.getCircleType() != Circle.TYPE_CAT){
event.target.setCircleType(Circle.TYPE_SELECTED);
}else{
return;
}
//表示碰到边缘 游戏结束
if(currentCat.indexX == 0 ||currentCat.indexX == 8 ||currentCat.indexY==0 ||currentCat.indexY==8){
alert("游戏结束");
return;
}
var dir = getMoveDir(currentCat);
switch (dir){
//判断他要走那一个方向
case MOVE_LEFT:
currentCat.setCircleType(Circle.TYPE_UNSELECTED);
currentCat = circleArr[currentCat.indexX - 1][currentCat.indexY];
currentCat.setCircleType(Circle.TYPE_CAT)
break;
case MOVE_UP_LEFT:
currentCat.setCircleType(Circle.TYPE_UNSELECTED);
currentCat = circleArr[currentCat.indexY%2?currentCat.indexX:currentCat.indexX- 1][currentCat.indexY-1];
currentCat.setCircleType(Circle.TYPE_CAT)
break;
case MOVE_UP_RIGHT:
currentCat.setCircleType(Circle.TYPE_UNSELECTED);
currentCat = circleArr[currentCat.indexY%2?currentCat.indexX+1:currentCat.indexX][currentCat.indexY-1];
currentCat.setCircleType(Circle.TYPE_CAT)
break;
case MOVE_RIGHT:
currentCat.setCircleType(Circle.TYPE_UNSELECTED);
currentCat = circleArr[currentCat.indexX+1][currentCat.indexY];
currentCat.setCircleType(Circle.TYPE_CAT)
break;
case MOVE_DOWN_RIGHT:
currentCat.setCircleType(Circle.TYPE_UNSELECTED);
currentCat = circleArr[currentCat.indexY%2?currentCat.indexX+1:currentCat.indexX][currentCat.indexY+1];
currentCat.setCircleType(Circle.TYPE_CAT)
break;
case MOVE_DOWN_LEFT:
currentCat.setCircleType(Circle.TYPE_UNSELECTED);
currentCat = circleArr[currentCat.indexY%2?currentCat.indexX:currentCat.indexX-1][currentCat.indexY+1];
currentCat.setCircleType(Circle.TYPE_CAT)
break;
//没有方向走 游戏结束
default:
alert("游戏结束");
}
}
function addCircles(){
//生成游戏背景
for (var indexY = 0; indexY <9;indexY++ ) {
for (var indexX = 0;indexX<9;indexX++) {
var c = new Circle();
gameView.addChild(c);
circleArr[indexX][indexY] = c;
c.indexX = indexX;
c.indexY = indexY;
//因为Y轴是 一前一后 所有判断一下 Y%2
c.x = indexY%2?indexX*55+25:indexX*55;
c.y = indexY * 55;
if(indexX == 4 && indexY == 4){
//中间出现一只猫
c.setCircleType(3);
currentCat = c;
}else if(Math.random() <0.1){
//让页面上随机出现 不能走的方框 方便围这只猫
c.setCircleType(Circle.TYPE_SELECTED);
}
//添加事件
c.addEventListener("click",circleClicked);
}
}
}
addCircles();
这样制作出了一个简单的围住神经猫的游戏开发。
