cannon game using turtle graphic

cannon_turtle3.py

import turtle
import math
import random

screen = turtle.getscreen()
screen.setup(width=1.0, height=0.9, startx=0, starty=0)
#width, height = screen.window_width(), screen.window_height()
width  = random.randint(20000,50000)
height = width
screen.setworldcoordinates(0,0,width, height)

turtle.speed(0)
kanone1 = turtle.Turtle()
kanone2 = turtle.Turtle()
ball1 = turtle.Turtle()
ball2 = turtle.Turtle()
ball1.speed(0)
ball2.speed(0)

x1 = 20
x2 = width - 20

for (ball, kanone) in ((ball1, kanone1),(ball2,kanone2)):
    kanone.penup()
    ball.penup()
    kanone.shape("turtle")
    ball.shape("circle")
    kanone.shapesize(2,2,1)
    if kanone == kanone2:
        kanone.goto(x2,20)
        kanone.color("red","red")
        ball.color("red","red")
        kanone.left(180)
    else:
        kanone.goto(x1,20)
        kanone.color("blue","blue")
        ball.color("blue","blue")
    ball.goto(kanone.pos())
    ball.pendown()
    
winkel1, speed1 = 30,300
winkel2, speed2 = 40,400
player1 = turtle.textinput("Player1","Wie heißt Du, Spieler1?")
player2 = turtle.textinput("Player2","Wie heißt Du, Spieler2?")
text1 = text2 = f"Distanz zum Ziel: {kanone2.xcor()-kanone1.xcor()} m\n"
#text2 = ""

gameover = False
g = -9.81
crit = 1
dt = 0.25
runde = 0
while True:
    runde += 1
    winkel1 = turtle.numinput(f"{player1} Schuss {runde} Winkel",
			  f"{text1}{player1} Winkel in ° eingeben (0-90) >>>",
			  winkel1,0,90)
    speed1 = turtle.numinput(f"{player1} Schuss {runde} Speed",
             f"{text1}{player1} speed in [m/s] eingeben (1-99999) >>>", 
             speed1,1,99999)
    winkel2 = turtle.numinput(f"{player2} Schuss {runde} Winkel", 
             f"{text2}{player2} Winkel in ° eingeben (0-90) >>>", 
             winkel2,0,90)
    speed2 = turtle.numinput(f"{player2} Schuss {runde} Speed", 
             f"{text2}{player2} speed in [m/s] eingeben (1-99999) >>>",
              speed2,1,99999)
    kanone1.setheading(winkel1)
    kanone2.setheading(180-winkel2)
    ball1.goto(kanone1.pos())
    ball2.goto(kanone2.pos())
    ball1.clear()
    ball2.clear()
    
    vx1 = math.cos(math.radians(winkel1)) * speed1
    vy1 = math.sin(math.radians(winkel1)) * speed1
    
    vx2 = math.cos(math.radians(180-winkel2)) * speed2
    vy2 = math.sin(math.radians(180-winkel2)) * speed2
    t=0
    
    while ball1.ycor() >= 20 or ball2.ycor() >= 20:
        t += dt
        x1 = kanone1.xcor() + vx1 * t
        y1 = kanone1.ycor() + vy1 * t + g * 0.5 * t * t
        x2 = kanone2.xcor() + vx2 * t
        y2 = kanone2.ycor() + vy2 * t + g * 0.5 * t * t 
        
        if ball1.ycor() >= 20:
            ball1.goto(x1,y1)
        if ball2.ycor() >= 20:
            ball2.goto(x2,y2)
    # --- auswertung ----
    win1 = False
    win2 = False
    distance1 = ball1.xcor() - kanone2.xcor()
    distance2 = kanone1.xcor() - ball2.xcor()
    if abs(distance1) < crit:
        win1 = True
    if abs(distance2) < crit:
        win2 = True
    if win1 or win2:
        break
    
    text1 += "Schuss Nummer {} ({}°, {}m/s) war {} Meter {}\n".format(
        runde, winkel1, speed1, abs(distance1),
        'zu weit' if distance1 > 0 else 'zu kurz')
    text2 += "Schuss Nummer {} ({}°, {}m/s) war {} Meter {}\n".format(
        runde, winkel2, speed2, abs(distance2),
         'zu weit' if distance2 > 0 else 'zu kurz')
    
# winner
if win1 and win2:
    text = "unentschieden"
elif win1:
    text = f"{player1} gewinnt"
elif win2:
    text = f"{player2} gewinnt" 
turtle.penup()
turtle.goto(width/2,height/2)
turtle.pendown()
turtle.write(text,align="center", font=("System", 50))
    
turtle.exitonclick()