new class for friendlyCreatures and their graphic

Drone.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class Drone here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class Drone extends FriendlyCreatures
+{
+    /**
+     * Act - do whatever the Drone 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.
+    }
+}

ExplodingRobot.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class ExplodingRobot here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class ExplodingRobot extends FriendlyCreatures
+{
+    /**
+     * Act - do whatever the ExplodingRobot 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.
+    }
+}

FriendlyCreatures.java

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+import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
+
+/**
+ * Write a description of class FriendlyCreatures here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class FriendlyCreatures extends SuperSmoothMover
+{
+    /**
+     * Act - do whatever the FriendlyCreatures 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.
+    }
+}