RST-05: Boundaries

Lesson

• go over why to add a constants file

• we need an if statement to prevent the sprite from moving off the screen

  • Note:  the"location" of the sprite is actually referenced by its top-left corner of the 16x16 size

• the screen size is 160 pixels x 128 pixels

• when moving the sprite, you must take into consideration its width!

constants.py

code.py