Turtle Race

Alstergymnasium Python turtle

The turtle wants to race. Our program uses functions (def) and keyboard input (turtle.onkey()).

flowchart TD
    A[Program Start] --> B[Initialize Variables]
    B --> C[Setup Screen & Title]
    C --> D[Draw Finish Line]
    D --> E[Display Game Rules]
    E --> F[Create Player Turtles]
    F --> G[Position Players at Start]
    G --> H[Show Countdown]
    H --> I[Display 'Go!']
    I --> J[Setup Key Bindings]
    J --> K[Start Main Loop]
    K --> L{Key Pressed?}
    L -->|A pressed| M[Player 1 Move Forward]
    L -->|\# pressed| N[Player 2 Move Forward]
    L -->|No key| L
    M --> O[Check Winner]
    N --> O
    O --> P{Player reached finish?}
    P -->|No| L
    P -->|Yes| Q[Disable Key Bindings]
    Q --> R[Clear Countdown Display]
    R --> S[Show Winner Message]
    S --> T[End Game]

import turtle
from time import sleep

colors = ["red", "green"]
end_x = 300  # Zielposition auf x-Achse
players = []
start_y = -20

def check_winner():
    for player in players:
        if player.xcor() >= end_x:
            turtle.onkey(None, "a")
            turtle.onkey(None, "#")

            # Siegeranzeige
            countdown_turtle.clear()
            worker_turtle.teleport(countdown_turtle.xcor(), countdown_turtle.ycor())
            worker_turtle.color(player.color()[0])
            worker_turtle.write(f"{player.color()[0].capitalize()} gewinnt!", align="center", font=("Arial", 28, "bold"))
            print(f"{player.color()[0].capitalize()} gewinnt!")

def player1_move():
    players[0].forward(10)
    check_winner()

def player2_move():
    players[1].forward(10)
    check_winner()


# Bildschirm vorbereiten
turtle.title("Turtle Race")
screen = turtle.Screen()
screen.bgcolor("lightblue")

# Ziellinie zeichnen
worker_turtle = turtle.Turtle()
worker_turtle.hideturtle()
worker_turtle.teleport(end_x, -100)
worker_turtle.left(90)
worker_turtle.forward(200)

# Spielregeln schreiben
worker_turtle.teleport(0, -150)
worker_turtle.write("Spieler 1 nutzt die Taste A, Spieler 2 nutzt die Taste #, möge der bessere Spieler gewinnen!", align="center", font=("Arial", 18, "bold"))

# Rennteilnehmer erstellen und aufstellen
for color in colors:
    player_turtle = turtle.Turtle()
    player_turtle.color(color)
    player_turtle.shape("turtle")
    player_turtle.penup()
    player_turtle.goto(-300, start_y)
    player_turtle.pendown()
    players.append(player_turtle)
    start_y += 40

# Countdown
countdown_turtle = turtle.Turtle()
countdown_turtle.hideturtle()
countdown_turtle.teleport(0, 100)
for i in range(3, 0, -1):       # Countdown zählt rückwärts
    countdown_turtle.clear()
    countdown_turtle.write(f"{i}", align="center", font=("Arial", 36, "bold"))
    sleep(1)
countdown_turtle.clear()
countdown_turtle.write("Los!", align="center", font=("Arial", 32, "bold"))

# Das Rennen starten
turtle.onkey(player1_move, "a")     # Player1 Taste zuweisen
turtle.onkey(player2_move, "#")     # Player2 Taste zuweisen
turtle.listen()                     # Tastatur Abfragen aktivieren
turtle.mainloop()                   # Fortlaufende Schleife, damit Tastaturabfrage ausgeführt wird