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game/README.TXT

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+------------------------------------------------------------------------
+这是这个工程的README文件，你可以在这里描述你的工程。告诉读者（某些对这个
+工程一无所知的人）所有他所需要知道的东西。你的说明通常至少应该包含以下几
+个部分：
+------------------------------------------------------------------------
+
+工程名：
+工程的目标：
+版本或者日期：
+如何启动这个工程：
+作者
+使用指南：

game/card.ctxt

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+#BlueJ class context
+comment0.target=card
+comment0.text=\r\n\ Write\ a\ description\ of\ class\ card\ here.\r\n\ \r\n\ @author\ (your\ name)\ \r\n\ @version\ (a\ version\ number\ or\ a\ date)\r\n
+comment1.params=
+comment1.target=void\ act()
+comment1.text=\r\n\ Act\ -\ do\ whatever\ the\ card\ wants\ to\ do.\ This\ method\ is\ called\ whenever\r\n\ the\ 'Act'\ or\ 'Run'\ button\ gets\ pressed\ in\ the\ environment.\r\n
+comment2.params=
+comment2.target=int\ getValue()
+comment3.params=
+comment3.target=boolean\ getFaceup()
+comment4.params=
+comment4.target=void\ turnFaceDown()
+comment5.params=cardValue
+comment5.target=card(int)
+numComments=6

game/card.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+import java.util.*;
+/**
+ * Write a description of class card here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class card extends Actor
+{
+    /**
+     * Act - do whatever the card wants to do. This method is called whenever
+     * the 'Act' or 'Run' button gets pressed in the environment.
+     */
+    public void act()
+    {
+        // Add your action code here.
+         if(Greenfoot.mouseClicked(this)){
+            if(!isFaceUp){
+                setImage(faceUpImage);
+                isFaceUp = true;
+            }
+        }
+
+    }
+    // 获取这张牌的点数
+    public int getValue(){
+        return value;
+    }
+    
+    // 获取这张牌是否已翻面
+    public boolean getFaceup(){
+        return isFaceUp;
+    }
+    
+    // 将牌翻成背面朝上
+    public void turnFaceDown(){
+        isFaceUp=false;
+        setImage(faceDownImage);
+    
+    }
+
+    private int value = -1;    //初始点数为-1，表示还没有生成确定的扑克牌。一旦生成了一张牌，其点数就不为-1
+    private boolean isFaceUp = false;	//isFaceUp=true，则牌正面朝上，否则背面朝上
+    private GreenfootImage faceUpImage = null;//faceUpImage表示牌的正面图案文件
+    private GreenfootImage faceDownImage = null;//faceDownImage表示牌的背面面图案文件
+    
+    //Card类的构造方法    
+     public card(int cardValue) {//cardValue是构造一张Card对象时传入的牌的点数        
+         value = cardValue;        
+         isFaceUp = false;	//所有被构造的牌都是背面朝上的       
+         String fileName = "hearts" + value + ".png";  //根据牌点数匹配的正面图案文件名        
+         //生成牌的正面图像对象        
+         faceUpImage = new GreenfootImage(fileName.toLowerCase());        
+         faceDownImage = new GreenfootImage("blueflip.png");	
+         //生成牌的背面图案对象        
+         setImage(faceDownImage);//让牌背面朝上放在牌桌上 
+        } 
+}

game/project.greenfoot

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+#Greenfoot project file
+class.card.image=blueflip.png
+class.table.image=porkboard.jpg
+dependency1.from=table
+dependency1.to=card
+dependency1.type=UsesDependency
+editor.fx.0.height=0
+editor.fx.0.width=0
+editor.fx.0.x=0
+editor.fx.0.y=0
+height=584
+package.numDependencies=1
+package.numTargets=2
+project.charset=UTF-8
+publish.hasSource=false
+publish.locked=true
+publish.longDesc=
+publish.shortDesc=
+publish.tags=
+publish.title=
+publish.url=
+readme.height=60
+readme.name=@README
+readme.width=49
+readme.x=10
+readme.y=10
+simulation.speed=50
+target1.height=70
+target1.name=card
+target1.showInterface=false
+target1.type=ClassTarget
+target1.width=120
+target1.x=0
+target1.y=0
+target2.height=70
+target2.name=table
+target2.showInterface=false
+target2.type=ClassTarget
+target2.width=120
+target2.x=0
+target2.y=0
+version=3.0.0
+width=828
+world.lastInstantiated=table
+xPosition=271
+yPosition=119

game/table.ctxt

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+#BlueJ class context
+comment0.target=table
+comment0.text=\r\n\ Write\ a\ description\ of\ class\ table\ here.\r\n\ \r\n\ @author\ (your\ name)\ \r\n\ @version\ (a\ version\ number\ or\ a\ date)\r\n
+comment1.params=
+comment1.target=table()
+comment1.text=\r\n\ Constructor\ for\ objects\ of\ class\ table.\r\n\ \r\n
+comment2.params=
+comment2.target=void\ act()
+numComments=3

game/table.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+import java.util.*;
+/**
+ * Write a description of class table here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class table extends World
+{
+    ArrayList<card> cards=new ArrayList<card>();
+    /**
+     * Constructor for objects of class table.
+     * 
+     */
+    public table()
+    {    
+        // Create a new world with 600x400 cells with a cell size of 1x1 pixels.
+        super(600, 400, 1);
+          for (int i=1; i<=5; i++) {      //向集合cards中添加两组共10张5点以下的牌            
+            cards.add(new card(i));            
+            cards.add(new card(i));        
+        }        
+        Collections.shuffle(cards); //集合类Collections的混排算法，用于打乱集合cards中牌的顺序        
+        int x=100, y=100;   //牌桌上摆放牌的起点坐标        
+        for (int i=0; i<5; i++) {   //用for循环依次在牌桌上摆放每排5张，共两排的扑克牌            
+            addObject(cards.get(i) , x, y);            
+            addObject(cards.get(i+5) , x, y + cards.get(i).getImage().getHeight() + 20);           
+            x += cards.get(i).getImage().getWidth()+20;       
+        }
+
+    }
+    public void act(){
+    card card1 = null, card2 = null;
+        int count = 0;
+        int card1Value = 0, card2Value = 0;
+        for(int i = 0; i < cards.size(); i++){
+            if(cards.get(i).getFaceup() == true){
+                count++;
+                if(count == 1){
+                    card1 = cards.get(i);
+                    card1Value = card1.getValue();
+                }
+                if(count == 2){
+                    card2 = cards.get(i);
+                    card2Value = card2.getValue();
+                    
+                    if(card1Value == card2Value)
+                    {
+                          Greenfoot.delay(30);
+                          
+                          removeObject(card1);                        
+                          removeObject(card2);                        
+                          cards.remove(card1);                        
+                          cards.remove(card2);
+                    }
+                    else{
+                        Greenfoot.delay(30);	
+                        card1.turnFaceDown();
+                        card2.turnFaceDown();
+                    }
+                }
+            }
+            
+        }
+
+    }
+}