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Module 4 Assignment - Loops SPRING 2023 CSci 203 INTRODUCTION TO COMPUTATIONAL MEDIA Module 4 Assignment – Loops Due Date: February 26th @ 11:59 P.M. In this assignment, you will demonstrate the use of loops to repeat code without writing duplicate code (the same code repeated over and over). You will also use concepts from Modules 1-4. Although your alien ship doesn’t have to be exact, you should draw an alien ship which closely resembles the ship on the next page. You do need to use the shapes and functions listed below and your objects should do the actions defined. Directions: 0. Save your work in the format, YourInitials_AlienShips. YourInitials should be your initials, for me it would be TH_AlienShips. Be sure to save your work often and make comments above the different sections of code. 1. At the top of your code, include the programming standards (your name, date, etc.) found in Blackboard in the “Course Information” section. (1 point) 2. Scene Details. The scene should be 800 by 800 pixels in size. 3. Create a spaceship in the top left corner of the scene window. You may want to turn stroke off for everything except lines. The description of the objects in the scene is below: a. Spaceship window – 5 ellipses. (2 points) b. Spaceship and Beam Origin – 4 ellipses and any other shapes you need to get the black bottom of the ship, I used many rectangles. (2 points) c. Beam and Beam light – 3 ellipses; 1 triangle; 2 lines. The lines may not be needed depends on how you use the triangle. (2 points) d. Planet and stars – 7 ellipses (1 point) Background and Spaceship Window Color: 4. Create a global Boolean variable to know when to change the color (you can name it what you want) and assign it a value of False. 1 point) 5. Below and outside of the draw function (not in), make a keyPressed function (see Chapter 2 and 3 slides). (1 point) a. In the keyPressed function, inform the computer that the value of the global Boolean variable you made in step 4 will change in the function by using the keyword “global”. (1 point) b. Using the not operator, flip the value of the global Boolean variable. (1 point) c. In the draw function create a conditional structure (if – else) to test Spaceship window beam beam light beam origin Spaceship star planet star i. If the variable equals False – change the background color ii. else – change the background color back to the original color (2 points) The beam should be some consistent color but for one bonus point, you should color the beam the same color as one of the background colors when that color isn’t the background. When the background is that color, the beam should change to white (this is where you can use the color of the triangle). Planet and Beam Origin Color: 6. Create a global Boolean variable and assign it the value True. (1 point) 7. Make a mousePressed function below and outside of the draw function and keyPressed functions (see Chapter 2 and 3 slides). Use a global statement with the variable to inform the computer that the value will change. Next in an assignment statement flip the variables value using the keyword not. (1 point). 8. In the draw() function before the planet and beam origin code, use a conditional statement (if – else) to test the Boolean variable. (2 points) a. In the if condition – the fill should be the original color. b. In the else – the color should be different. You can use whatever two colors you would like. The beam light and stars: 9. The beam light and stars should just use any random colors. Both lines in a particular star should be the same color but each star can be different as well as the beam light. It should kind of flicker when the scene is playing (refer to the video). (1 point) Using loops to make multiple ships: 10. Following examples from Chapter 4 slides, you will create a nested loop (an outer “while loop” and an inner “for loop”) that will repeat the code you used to make the alien ship to fill the screen. This will require local variables (known as loop control variables) in the draw function, one for the “while loop” and another for the “for loop”. (*hint: the loop control variables will be used as the x and y coordinates of the shapes). a. In the draw() function: before the code for the alien ship, create a local variable (it will be used as the loop control variable for the “while loop”) for the x OR y coordinates of the shapes. You should assign this variable the value of your starting position of your alien ship’s x OR y coordinate of the shape you used as your starting/center shape (probably the ellipse of your ship but you should decide). (1 point) b. After the local variable (but before the code for the ship), create a “while loop” that tests the value of the variable you made above (the loop control variable) is less than the height or width of your scene window (depending on the coordinate you picked). (1 point) i. Highlight all the code for the alien ship, stars beam and any other object you have and tab it all over once, so the code is part of (inside) the “while loop”. ii. Before you start changing numbers, you may want to copy your shapes code, comment out the original and change the copy so you keep all the original values. iii. At the end of the code (at the bottom) for your alien ship and objects code (tabbed over the same as the other code), use a combination assignment operator or math operation to increase the value of the “while loops” loop control variable. Be sure the value is large enough so that the alien ships and other objects don’t overlap. (1 point) iv. Replace all the x OR y coordinates (whichever one you picked for the while loop) of the alien ships and other objects with the “while loops” loop control variable and adjust the offsets. You may want to adjust one shape at a time and run your code after each change to ensure its working correctly. You should have a line of alien ships and other objects either across the window or down the window depending on whether you replaced the x OR y coordinates. I replaced the y coordinates, so mine go down. You’ve now used a loop to repeat code without needing to write extra code. (2 points) c. Beneath the “while loop” but before the alien ship and other objects code, create a “for loop” with a loop control variable (you can name it whatever you want) for the other coordinate (x OR y that you didn’t chose before). The range function of the “for loop” should have 3 values: a start value (should be the Alien ships x OR y coordinate of the center shape whichever one you didn’t use in the while loop), an end value (the width or height of your window), and a step value (how much space you want between the different objects so that they don’t overlap) (2 points) i. Highlight all the alien ships and other objects code and tab it all over again once so that the code is now part of (inside) the “for loop”. ii. Replace each shape’s value coordinates (whichever one you didn’t use for the “while loop”) with the “for loop” loop control variable and adjust the offsets. Be sure to run your code as you make changes. Your window should be full of alien ships and other objects. (2 points) 11. Use of good programming structure, comments, etc. (2 points) Submission: 12. Save your finished work (make sure the naming format matches: YourInitials_AlienShips and remember the Yourintials part are your actual initials). 13. Zip the folder containing your finished work and upload the zipped file to Blackboard under Assignment 4. How to zip a file: Windows: Right click on the folder/file you want to zip. In the drop-down menu, select Send to, and in that drop-down menu, select Compressed (zipped) folder. Mac: Right click on the folder/file you want to zip. In the drop-down menu, select Compress “theNameOfTheFolder” SPRING 2023 CSci 203 INTRODUCTION TO COMPUTATIONAL MEDIA Module 4 Assignment – Loops Directions: 5. Below and outside of the draw function (not in), make a keyPressed function (see Chapter 2 and 3 slides). (1 point) a. In the keyPressed function, inform the computer that the value of the global Boolean variable you made in step 4 will change in the function by using the keyword “global”. (1 point) i. If the variable equals False – change the background color ii. else – change the background color back to the original color (2 points) Submission: How to zip a file: Windows: Mac: