Differences

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--- your_initials_in_beepers [2019/08/17 12:12] – frchris
+++ your_initials_in_beepers [2019/08/18 12:40] (current) – frchris
@@ Line 4: / Line 4: @@
 {{http://danshuster.com/apcs/karel25.jpg|}}
-Here is some starter code for a new class.  Feel free to rename the class or the robot.<code java>
+Here is some starter code for a new class.  Feel free to rename the class or the robot.
+[[http://csis.pace.edu/%7Ebergin/KarelJava2ed/KJRdocs/index.html|API]] (Application Programming Interface)
+<code java>
 import kareltherobot.*;
 /**
@@ Line 13: / Line 18: @@
  *
  */
+public class DrawInitials implements Directions
-public class DrawInitials implements Directions {
+{
+	public static void main(String[] args)
-	public static void main(String[] args) {
+	{
-		World.setDelay(50);
+		World.setDelay(30);
-                World.setSize(8,15);
+		World.setSize(8,15);
 		World.setVisible();
 		task();
 	}
-    public static void task(){
+	public static void task()
-    	DrawInitials lisa = new MileWalker(1, 9, North, infinity);
+	{
-   	    lisa.putBeeper();
+		Robot lisa = new Robot(5, 1, South, infinity);
-   	    lisa.turnLeft();
-   	    lisa.move();
+		lisa.putBeeper();
-    	lisa.turnOff();
+		lisa.move();
-    }
+		lisa.putBeeper();
+		lisa.move();
+		lisa.putBeeper();
+		lisa.move();
+		lisa.putBeeper();
+		lisa.move();
+		lisa.turnLeft();
+		lisa.putBeeper();
+		lisa.move();
+                lisa.putBeeper();
+		lisa.move();
+		lisa.putBeeper();
+		lisa.move();
+		lisa.turnOff();
+	}
 }
 </code>
+====== Making a method ======
+With all those ''move()'' and ''putBeeper()'' statements it is hard to read the code.  You can make  a method in your class called ''placeSomeBeepers'':<code java>/**
+	 * Places n beepers from Robot r ina striaght line
+	 * @param r the Robot placing the beepers
+	 * (precondtion: Robot must have enough beepers)
+	 * @param n the number of beepers to place
+	 */
+	public static void placeSomeBeepers(Robot r, int n)
+	{
+		for (int i=0; i < n; i++)
+		{
+			r.putBeeper();
+			r.move();
+		}
+	}</code>
+Now all your ''task()'' method can look like this:<code java>public static void task()
+	{
+		Robot lisa = new Robot(5, 1, South, infinity);
+		placeSomeBeepers(lisa, 4);
+		lisa.turnLeft();
+		placeSomeBeepers(lisa, 3);
+		lisa.move();
+		lisa.turnOff();
+	}</code>