Lines with PyGameZero

linien.py

# Linien
# License: MIT
# Olav Schettler <olav@schettler.net>

WIDTH = 800
HEIGHT = 600

offset = 0

def incr_offset():
    global offset
    offset += 1
    if offset > 39:
        offset = 0

clock.schedule_interval(incr_offset, 0.1)

def draw():
    screen.clear()
    for x in range(0, WIDTH, 40):
        screen.draw.line(
            (0, HEIGHT - x - offset), 
            (x + offset, 0),
            (255, 0, 0)
        )
        screen.draw.line(
            (WIDTH, x + offset), 
            (WIDTH - x - offset, HEIGHT),
            (255, 0, 0)
        )