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  2. 2D小游戏开发学习笔记（5）-CreateJs游戏案例

2D小游戏开发学习笔记（5）-CreateJs游戏案例

由 一曲冷凌霜 提交于 2020-04-06 05:54:07

一、围住神经猫游戏

游戏玩法：玩法很简单，蓝色圆圈代表神经猫，通过点击周围圆圈把猫困住，就算游戏成功

游戏效果

逻辑梳理：

1、绘制规律的圆点；

2、设置神经猫位置；

3、设置逻辑

1）六个方向游走；

2）游戏结束：走到边界、围堵到中间不能跳动

开发过程

1.下载CreateJs包文件包

2.围绕神经猫游戏页面元素的绘制

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;//保存这只猫

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;

            c.x = indexY%2?indexX*55+25:indexX*55;
            c.y = indexY * 55;
            if(indexX == 4 && indexY == 4){


                c.setCircleType(3);
                currentCat = c;
            }else if(Math.random() <0.1){

                c.setCircleType(Circle.TYPE_SELECTED);
            }
            //添加监听事件
            c.addEventListener("click",circleClicked);
        }
    }
}
addCircles();

index.html

 <!DOCTYPE html>
 <html>
     <head>
         <meta charset="UTF-8">
         <title></title>
         <script src="easeljs.min.js"></script>
         <script src="Circle.js"></script>
     </head>
     <body>
         <canvas id="gameView" width="800px" height="800px"></canvas>
         <script src="app.js" type="text/javascript" charset="utf-8"></script>
     </body>
 </html>

3.围住神经猫游戏添加监听事件

点击圆改变颜色，点击神经猫的颜色不变

Circle.js

function Circle(){
    createjs.Shape.call(this);
    this.setCircleType = function(type){
        this._circleType = type;
        switch (type){
            //初始颜色
            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    
Circle.TYPE_UNSELECTED = 1;
Circle.TYPE_SELECTED = 2;
Circle.TYPE_CAT = 3;

app.js

//添加监听事件
            c.addEventListener("click",circleClicked);

4.简单的逻辑实现围绕神经猫游戏效果

1）六个方向游走；

2）游戏结束：走到边界、围堵到中间不能跳动

app.js中添加

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;
//6个方向的参数
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;
    }
    //判断是否被围住 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){
        //看是否还存在道路可走
        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;

        default:
            alert("游戏结束");
    }
}

二、看你有多色游戏

游戏玩法： 找出颜色不同的方块

游戏效果

开发步骤

1.绘制页面

app.js

var stage= new createjs.Stage("gameView");
createjs.Ticker.setFPS(30);
createjs.Ticker.addEventListener("tick",stage);
var gameView = new createjs.Container();
stage.addChild(gameView);

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="easeljs.min.js"></script>
</head>
<body>
<canvas id="gameView" width="400px" height="400px"></canvas>
<script src="app.js"></script>
</body>

</html>

2.创建函数与方法，实现游戏逻辑

设置小方块属性：

Rect.js

function Rect(n,color,RectColor){                    
    createjs.Shape.call(this);
    this.setRectType = function(type){
        this._RectType = type;
        switch (type){
            case 1:
                this.setColor(color);           
                break;
            case 2:
            this.setColor(RectColor);
                break;
        }
    }
//设置颜色的方法
    this.setColor = function(colorString){
        this.graphics.beginFill(colorString);
        this.graphics.drawRect(0,0,400/n-5,400/n-5);//绘制方块
        this.graphics.endFill();
    }
    this.getRectType = function(){
        return this._RectType;
    }
    this.setRectType(1);
    
}
Rect.prototype = new createjs.Shape();

app.js

var stage= new createjs.Stage("gameView");
createjs.Ticker.setFPS(30);
createjs.Ticker.addEventListener("tick",stage);
var gameView = new createjs.Container();
stage.addChild(gameView);

//n  列数 最少等于2
var n = 2;
function addRect(){
    //随机生成一个颜色
    var cl = parseInt(Math.random() * 1000000);
    var color = "#"+cl;
    //根据n 生成不同的颜色  n越大生成的颜色越接近
    var lhh = cl+(10-n)*500;
    var RectColor = "#"+lhh;
    var x = parseInt(Math.random() * n);
    var y = parseInt(Math.random() * n);
    //渲染页面
    for (var indexX = 0; indexX < n ;indexX++) {
        for (var indexY = 0;indexY <n;indexY++) {
            var r = new Rect(n,color,RectColor);
            gameView.addChild(r);
            r.x = indexX;
            r.y = indexY;
            if(r.x ==x &&r.y == y){
                r.setRectType(2);
            }
            r.x = indexX * (400/n);
            r.y = indexY * (400/n);
            if(r.getRectType() == 2){
                r.addEventListener("click",function(){
                    if(n<7){
                        ++n;
                    }
                    gameView.removeAllChildren();
                    addRect()
                })
            }
        }
    }
}
addRect()
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