import org.jointheleague.graphical.robot.Robot;

/*** Teacher's note ***/

/* Before beginning recipe:

* 1. ask students to find and explain the method in this recipe.

* 2. ask students how they might use the method to make the picture in the laminated hand-outs. */

public class StarShow {

Robot robot = new Robot("batman");

void makeStars() {

//5. delete this line. you will draw the star again in step 8.

// 13. Set the speed to 8

robot.setSpeed(10);

// 6. Make a variable to hold the X position of the Robot and set it to 10

int Xpos = 10;

// 7. Make a variable to hold the Y position of the Robot and set it to 950

int Ypos = 950;

// 8. Make a variable to hold the star size and set it to 25

int starSize = 25;

// 12. Repeat the steps #19 to #18, 30 times

for (int i=0; i<=30; i++) {

System.out.println(Ypos);

System.out.println(Xpos);

// 19. Set the pen width to i

robot.setPenWidth(i);

// 10. Set the X position of the robot to your X variable

robot.setX(Xpos);

// 11. Set the Y position of the robot to your Y variable

robot.setY(Ypos);

// 9. Call the drawStar() method with your star size variable

drawStar(starSize);

// 14. Increase the X position by star size. See Figure 2.

Xpos=Xpos+starSize;

// 15. decrease the Y position by star size. See Figure 3.

Ypos=Ypos-starSize;

// 16. Increase the star size by 20

starSize=starSize+20;

// 17. Turn the robot 12 degrees

robot.turn(12);

// 18. Make each star a different random color like in Figure 4.

robot.setRandomPenColor();

}

}

private void drawStar(int starSize) {

// 2. Put the robot's pen down

robot.penDown();

// 4. Repeat both commands 5 times. See Figure 1 at http://bit.ly/star-show

for (int i=0; i<5; i++) {

// 1. Move the robot the distance of the starSize variable

robot.move(starSize);

robot.setRandomPenColor();

// 3. Turn the robot 144 degrees

robot.turn(144);

}

}

public static void main(String[] args) {

new StarShow().makeStars();

}

}