added files

Author: lhns

.gitignore

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+#Git
+.cache
+
+#Gradle
+.gradle/
+build/
+gradle-app.setting
+
+#Other
+*.log
+
+#Eclipse
+.project
+.classpath
+.settings/
+bin/
+
+#IntelliJ
+*.iml
+*.ipr
+*.iws
+.idea/
+out/
+projectFilesBackup*/
+
+#Scala
+.scala_dependencies
+.worksheet
+
+#SBT
+.cache/
+.history/
+.lib/
+dist/*
+target/
+lib_managed/
+src_managed/
+project/boot/
+project/plugins/project/
+
+#Java
+*.class

Apple.ctxt

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+#BlueJ class context
+comment0.params=obj
+comment0.target=boolean\ solidAgainst(GameObj)
+comment1.params=obj
+comment1.target=boolean\ solidAgainstPost(GameObj)
+comment2.params=obj
+comment2.target=boolean\ pushable(GameObj)
+comment3.params=
+comment3.target=void\ created()
+comment4.params=
+comment4.target=void\ onRemove()
+comment5.params=
+comment5.target=int\ getId()
+numComments=6

Apple.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class Apple here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class Apple extends GameObj
+{
+    public boolean solidAgainst(GameObj obj) {
+        return !(obj instanceof Pushy || obj instanceof LaserRay);
+    }
+    
+    public boolean solidAgainstPost(GameObj obj) {
+        if (obj instanceof Pushy) {
+            remove();
+            Sound.drop.play();
+        }
+        return false;
+    }
+    
+    public boolean pushable(GameObj obj) {
+        return (obj instanceof PowerPistonHead);
+    }
+    
+    public void created() {
+        getWorld().openGoal();
+    }
+    
+    public void onRemove() {
+        getWorld().closeGoal();
+    }
+    
+    public int getId() {
+        return 21;
+    }
+}

Ball.ctxt

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+#BlueJ class context
+comment0.params=
+comment0.target=void\ update()
+comment1.params=color\ bool
+comment1.target=java.lang.String\ getColoredIcon(int,\ boolean)
+comment2.params=
+comment2.target=int\ getColor()
+comment3.params=color
+comment3.target=void\ setColor(int)
+comment4.params=obj
+comment4.target=boolean\ pushable(GameObj)
+comment5.params=
+comment5.target=void\ created()
+comment6.params=
+comment6.target=void\ onRemove()
+numComments=7

Ball.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class Ball here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class Ball extends GameObj implements IColored
+{
+    public void update() 
+    {
+        setImage(getColoredIcon(getColor(), false));
+    }
+    
+    public String getColoredIcon(int color, boolean bool) {
+        if (color==1) return "1.png";
+        if (color==2) return "2.png";
+        if (color==3) return "113.png";
+        if (color==4) return "3.png";
+        return "100.png";
+    }
+    
+    public int getColor() {
+        return extraData.getInt("color");
+    }
+    
+    public void setColor(int color) {
+        extraData.setInt("color", color);
+        setImage(getColoredIcon(color, false));
+    }
+
+    public boolean pushable(GameObj obj) {
+        return (obj instanceof Pushy || obj instanceof PowerPistonHead);
+    }
+    
+    public void created() {
+        getWorld().openGoal();
+    }
+    
+    public void onRemove() {
+        getWorld().closeGoal();
+    }
+}

BallBlue.ctxt

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+#BlueJ class context
+comment0.params=
+comment0.target=void\ created()
+comment1.params=
+comment1.target=int\ getId()
+numComments=2

BallBlue.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class Blue here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class BallBlue extends Ball
+{
+    public void created() {
+        super.created();
+        setColor(2);
+    }
+
+    public int getId() {
+        return 2;
+    }
+}

BallGreen.ctxt

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+#BlueJ class context
+comment0.params=
+comment0.target=void\ created()
+comment1.params=
+comment1.target=int\ getId()
+numComments=2

BallGreen.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class Green here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class BallGreen extends Ball
+{
+    public void created() {
+        super.created();
+        setColor(4);
+    }
+
+    public int getId() {
+        return 3;
+    }
+}

BallRed.ctxt

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+#BlueJ class context
+comment0.params=
+comment0.target=void\ created()
+comment1.params=
+comment1.target=int\ getId()
+numComments=2

BallRed.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class Red here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class BallRed extends Ball
+{
+    public void created() {
+        super.created();
+        setColor(1);
+    }
+
+    public int getId() {
+        return 1;
+    }
+}

BallYellow.ctxt

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+#BlueJ class context
+comment0.params=
+comment0.target=void\ created()
+comment1.params=
+comment1.target=int\ getId()
+numComments=2

BallYellow.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class BYellow here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class BallYellow extends Ball
+{
+    public void created() {
+        super.created();
+        setColor(3);
+    }
+
+    public int getId() {
+        return 101;
+    }   
+}

Box.ctxt

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+#BlueJ class context
+comment0.params=obj
+comment0.target=boolean\ pushable(GameObj)
+comment1.params=
+comment1.target=int\ getId()
+numComments=2

Box.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class Box here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class Box extends GameObj
+{
+    public boolean pushable(GameObj obj) {
+        return (obj instanceof Pushy || obj instanceof PowerPistonHead);
+    }
+    
+    public int getId() {
+        return 9;
+    }
+}

BoxGoal.ctxt

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+#BlueJ class context
+comment0.params=
+comment0.target=void\ created()
+comment1.params=obj
+comment1.target=boolean\ solidAgainst(GameObj)
+comment2.params=obj
+comment2.target=boolean\ solidAgainstPost(GameObj)
+comment3.params=obj
+comment3.target=void\ onLeave(GameObj)
+comment4.params=
+comment4.target=int\ getRenderOrder()
+comment5.params=
+comment5.target=int\ getId()
+numComments=6

BoxGoal.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class BoxGoal here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class BoxGoal extends GameObj
+{
+    public void created() {
+        getWorld().openGoal();
+    }
+    
+    public boolean solidAgainst(GameObj obj) {
+        return false;
+    }
+    
+    public boolean solidAgainstPost(GameObj obj) {
+        if (obj instanceof Box) {
+            getWorld().closeGoal();
+            Sound.drop.play();
+        }
+        return false;
+    }
+    
+    public void onLeave(GameObj obj) {
+        if (obj instanceof Box) {
+            getWorld().openGoal();
+        }
+    }
+    
+    public int getRenderOrder() {
+        return GameObj.R_Bck;
+    }
+    
+    public int getId() {
+        return 18;
+    }
+}

Button.ctxt

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+#BlueJ class context
+comment0.params=obj
+comment0.target=boolean\ solidAgainst(GameObj)
+comment1.params=obj
+comment1.target=boolean\ solidAgainstPost(GameObj)
+comment2.params=obj
+comment2.target=void\ onLeave(GameObj)
+comment3.params=
+comment3.target=void\ onRemove()
+comment4.params=
+comment4.target=int\ getRenderOrder()
+comment5.params=
+comment5.target=int\ getId()
+numComments=6