Due: Friday May 1st

This assignment requires creating a new class called "sprite". The goal is to have sprite objects, similar to the ones in Scratch, that move around the screen and that the user can control using the arrow keys or the mouse. It may be helpful to look back at the simple ball code on the course schedule to get an idea for how the sprite should be coded.

The sprite class should have the following data members:

• An x and a y to store the location of the sprite. These should both be floats.
• An x velocity and a y velocity that make the sprite move around the screen.

The sprite class should also have the following functions (methods):

• A constructor that sets the initial position and velocity of the sprite.
• A function called display() that draws the sprite on the screen. How the sprite looks is up to you. It's probably easiest to start with an ellipse and make it fancier later.
• A function called update() that changes the position of the sprite based on its velocity. If the sprite reaches a side of the window it should either bounce off the side or "wrap" around to the other side of the window. Which one it does is up to you, but this movement should be handled by the update() function.
• A function called adjust_velocity() that takes two inputs and changes the velocity of the sprite according to those two inputs.

The main program should do the following:

• Create a sprite object.
• In the draw() function repeatedly display() and update() the sprite so that it moves around the screen.
• Use the keyPressed() function to get user input and control the sprite. When the user presses a key use the adjust_velocity() function to change the sprites velocity.
• How you handle erasing the window if up to you. You could use the background() function to completely erase it or the rect() function with a fill with an alpha value to partially erase it and have the sprite leave a trail.

Extra Credit

• Create several sprites, only one of which is controlled by the user. In this case the other sprites should have random starting postions and/or random initial velocities.
• Use an image for the background and for the sprite.
• Create two different sprites that are controlled by different sets of keys.

Turn in: Save your project with the name [scratchname]Assignment13. E.g. my project would be saved as tsoule89Assignment13 (without the []'s). Zip up the entire project folder - you can find it in your processing folder. Email the zipped project as an attachment to both TAs Allen, Craig (alle7522@vandals.uidaho.edu); MacPhereson, Serendel (macp6269@vandals.uidaho.edu). Make the subject of the email CS112Assignment13.