import turtle
import random

# Number to be guessed: 1 to UPPER_RANGE
UPPER_RANGE = 12
PLAYER_1_COLOR = 'red'
PLAYER_2_COLOR = 'green'
WINNING_SCORE = 2

def get_guess(player):
    """
    Returns a valid user input guess number from 1 to WINNING_SCORE

    Args:
        player: the player number to show in the prompt to get output.

    Returns:
        int: a int from 1 to WINNING_SCORE
    """
    while True:
        try:
            guess_str = input(f"Player #{player}: please make a guess from 1 to {UPPER_RANGE}: ")
            guess = int(guess_str)
            if 1 <= guess <= UPPER_RANGE:
                return guess
            else:
                print(f"   Invalid Guess.Please enter a number between 1 and {UPPER_RANGE}.")
        except (ValueError, TypeError):
            print("   Invalid Input. Please enter a valid number.")

# Set up the turtle screen
screen = turtle.Screen()
screen.setup(width=400, height=200)
screen.title(f"Guess Game: Player 1 ({PLAYER_1_COLOR}), Player 2 ({PLAYER_2_COLOR})")

# t1: turtle for player #1
t1 = turtle.Turtle()
t1.shape("turtle")
t1.color(PLAYER_1_COLOR)
t1.penup()
t1.goto(-150, 30) 
t1.pendown()

# t2: turtle for player #2
t2 = turtle.Turtle()
t2.shape("turtle")
t2.color(PLAYER_2_COLOR)
t2.penup()
t2.goto(-150, -30) 
t2.pendown()

#  initial scores for the two players.
player_1_score = 0
player_2_score = 0

#  get the first random number from 1 to UPPER_RANGE
correct_answer = random.randint(1, UPPER_RANGE)

#  play the game.
while True:
    #   every iteration includes a guess from player #1 and a guess
    #   guess from player #2, until one player wins.

    #   get a guess from player 1 and process it.
    guess = get_guess(1) 
    #   process the guess.
    if guess == correct_answer:
        #   update player #1 score.
        player_1_score += 1
        #   move player #1 turtle.
        t1.forward(300 // WINNING_SCORE)
        
        if player_1_score >= WINNING_SCORE:
            #   player #1 wins.
            print(f"Correct. Player 1 wins. Score: {player_1_score}")
            print(f"   Player 2 loses; score: {player_2_score}") 
            break
        else:
            #   no winner yet. Continue to play the game.
            print(f"  Correct. Player 1 score: {player_1_score}")
            correct_answer = random.randint(1, UPPER_RANGE)
    else: 
        #   Provide feedback.
        print(f"  Incorrect. Your guess is {'smaller' if guess < correct_answer else 'larger'} then the answer.")  

    #   get a guess from player 2 and process it.
    guess = get_guess(2)
    #   process the guess.
    if guess == correct_answer:
        #   update player #2 score.
        player_2_score += 1
        #   move player #2 turtle.
        t2.forward(300 // WINNING_SCORE)
        
        if player_2_score >= WINNING_SCORE:
            #   player #2 wins.
            print(f"Correct. Player 2 wins. Score: {player_2_score}")
            print(f"   Player 1 lose; score: {player_1_score}") 
            break
        else:
            #   no winner yet. Continue to play the game.
            print(f"  Correct. Player 2 score: {player_2_score}")
            correct_answer = random.randint(1, UPPER_RANGE)
    else:
        #   Provide feedback.    
        print(f"  Incorrect. Your guess is {'smaller' if guess < correct_answer else 'larger'} then the answer.")  

# Keep the window open until closed manually
screen.mainloop()