rpsgame.py

import random

rolls = {
    "rock": {"defeats": ["scissors"], "defeated_by": ["paper"]},
    "paper": {"defeats": ["rock"], "defeated_by": ["scissors"]},
    "scissors": {"defeats": ["paper"], "defeated_by": ["rock"]},
}


def main():
    show_header()
    play_game("You", "Computer")


def show_header():
    print("---------------------------")
    print("   Rock Paper Scissors")
    print(" Data Structures Edition")
    print("---------------------------")


def play_game(player_1, player_2):
    wins = {player_1: 0, player_2: 0}
    roll_names = list(rolls.keys())

    while not find_winner(wins, wins.keys()):
        roll1 = get_roll(player_1, roll_names)
        roll2 = random.choice(roll_names)

        if not roll1:
            print("Try again!")
            continue

        print(f"{player_1} roll {roll1}")
        print(f"{player_2} rolls {roll2}")

        winner = check_for_winning_throw(player_1, player_2, roll1, roll2)

        if winner is None:
            print("This round was a tie!")
        else:
            print(f"{winner} takes the round!")
            wins[winner] += 1

        # print(f"Current win status: {wins}")

        print(
            f"Score is {player_1}: {wins[player_1]} and {player_2}: {wins[player_2]}."
        )
        print()

    overall_winner = find_winner(wins, wins.keys())
    print(f"{overall_winner} wins the game!")


def find_winner(wins, names):
    best_of = 3
    for name in names:
        if wins.get(name, 0) >= best_of:
            return name

    return None


def check_for_winning_throw(player_1, player_2, roll1, roll2):
    winner = None
    if roll1 == roll2:
        print("The play was tied!")

    outcome = rolls.get(roll1, {})
    if roll2 in outcome.get("defeats"):
        return player_1
    elif roll2 in outcome.get("defeated_by"):
        return player_2

    return winner


def get_roll(player_name, roll_names):
    print("Available rolls:")
    for index, r in enumerate(roll_names, start=1):
        print(f"{index}. {r}")

    text = input(f"{player_name}, what is your roll? ")
    selected_index = int(text) - 1

    if selected_index < 0 or selected_index >= len(rolls):
        print(f"Sorry {player_name}, {text} is out of bounds!")
        return None

    return roll_names[selected_index]


if __name__ == "__main__":
    main()