1. Pong

Präsentation

Zustandsdiagramm

Event-State Tabelle

Zustand Ereignis	IDLE	BL:MOVE_LEFT	MOVE_LEFT	BR:MOVE_RIGHT	MOVE_RIGHT	A_WINS	B_WINS
Button A	Ball in Mitte MOVE_LEFT	MOVE_RIGHT
Kein Button A		B_WINS
Button B	Ball in Mitte MOVE_RIGHT			MOVE_LEFT
Kein Button B				A_WINS
500ms timer	Happy IDLE		Ball nach links, Position anzeigen MOVE_LEFT		Ball nach rechts, Position anzeigen MOVE_RIGHT	A IDLE	B IDLE

Ausprobieren auf Micro:Bit

Material

Micro:Bit

mit USB-Kabel an den Computer angeschlossen

Editor

Online-Editor 👉 python.microbit.org

from microbit import *

state = 'IDLE'

def current_pos():
    for i in range(5):
        if display.get_pixel(i, 2) == 9:
            return i
    return 2

def set_ball(pos):
    display.clear()
    display.set_pixel(pos, 2, 9)

while True:
    btn_a = button_a.was_pressed()
    btn_b = button_b.was_pressed()
    pos = current_pos()

    if state == 'IDLE':
        display.show(Image.HAPPY)
        if btn_a:
            set_ball(2)
            state = 'MOVE_LEFT'
        elif btn_b:
            set_ball(2)
            state = 'MOVE_RIGHT'
    elif state == 'MOVE_LEFT':
        if pos == 0:
            if btn_a:
                state = 'MOVE_RIGHT'
            else:
                state = 'B_WINS'
        else:
            pos = pos - 1
            set_ball(pos)
    elif state == 'MOVE_RIGHT':
        if pos == 4:
            if btn_b:
                state = 'MOVE_LEFT'
            else:
                state = 'A_WINS'
        else:
            pos = pos + 1
            set_ball(pos)
    elif state == 'A_WINS':
        display.show('A')
        sleep(1500)
        state = 'IDLE'
    elif state == 'B_WINS':
        display.show('B')
        sleep(1500)
        state = 'IDLE'
    sleep(500)