Advanced Graphics with Classes

For this tutorial, return to your ggame-tutorials repository that you forked earlier. Create a new file called tutorial4.py and paste the following code into it to get started:

from ggame import App, RectangleAsset, ImageAsset, Sprite, LineStyle, Color

SCREEN_WIDTH = 640
SCREEN_HEIGHT = 480

# Background
black = Color(0, 1)
noline = LineStyle(0, black)
bg_asset = RectangleAsset(SCREEN_WIDTH, SCREEN_HEIGHT, noline, black)
bg = Sprite(bg_asset, (0,0))


myapp = App(SCREEN_WIDTH, SCREEN_HEIGHT)
myapp.run()

This snippet should look familiar, as it is a "cut down" version of the last tutorial that you worked on (tutorial3.py). Notice that we have removed the step function entirely. In this tutorial, we will add the step function back, but in an entirely different way!

Create a New App Class

For the first part of this tutorial, we would like to customize the behavior of the standard App class by creating an entirely new application class called MyApp that inherits its basic behavior from the standard App class.