问题
I have a python turtle program which is displayed below.
i want to be able to stop game when turtle touches black or touches line but i cant find any help online!!!
import logging
from datetime import datetime
import time
from turtle import *
import winsound
#while True:
# player1 = input("enter player1 name\n")
# break
#while True:
# player2 = input("enter player2 name\n")
# print("Please click on window titled pacman")
# break
setup(600, 600)
Screen()
title("Rendering")
horse2 = Turtle()
horse2.shape("triangle")
horse2.color("blue")
#making the map
map1 = Turtle()
map1.color("black")
map1.shape("square")
map1.forward(100)
map1.left(90)
map1.forward(50)
map1.left(180)
map1.forward(50)
map1.right(90)
map1.forward(100)
map1.right(90)
map1.forward(50)
map1.penup()
map1.left(90)
map1.forward(50)
map1.pendown()
map1.forward(50)
map1.right(90)
map1.forward(50)
map1.left(90)
map1.forward(50)
map1.penup()
map1.forward(50)
map1.left(90)
map1.pendown()
map1.forward(50)
map1.forward(50)
map1.left(90)
map1.forward(50)
map1.right(90)
map1.forward(50)
map1.left(90)
map1.forward(50)
map1.penup()
map1.forward(50)
map1.pendown()
map1.right(90)
map1.forward(50)
map1.forward(50)
map1.right(90)
map1.forward(200)
map1.forward(40)
map1.right(90)
map1.forward(400)
map1.right(90)
map1.forward(500)
map1.right(90)
map1.forward(450)
map1.penup()
map1.forward(50)
map1.pendown()
map1.right(90)
map1.forward(500)
map1.right(90)
map1.forward(100)
map1.right(90)
map1.forward(100)
map1.right(90)
map1.forward(50)
map1.left(180)
map1.forward(50)
map1.penup()
map1.forward(50)
map1.forward(50)
map1.pendown()
map1.left(90)
map1.forward(50)
map1.left(180)
map1.forward(100)
map1.left(180)
map1.forward(150)
map1.right(180)
map1.forward(150)
map1.penup()
map1.forward(50)
map1.forward(100)
map1.right(90)
map1.pendown()
map1.forward(150)
map1.right(90)
map1.forward(100)
map1.forward(50)
map1.left(90)
map1.forward(50)
map1.right(180)
map1.penup()
map1.forward(100)
map1.penup()
map1.forward(200)
map1.forward(50)
map1.left(90)
map1.forward(10)
map1.right(90)
map1.pendown()
map1.forward(50)
map1.right(90)
map1.forward(50)
map1.left(90)
map1.forward(50)
map1.right(90)
map1.forward(50)
map1.left(90)
map1.penup()
map1.forward(50)
#making the map
showturtle()
hideturtle()
horse2.penup()
horse2.goto(-250, -100)
title("Pacman")
def k3():
horse2.right(90)
def k2():
horse2.left(90)
if horse2.xcor() > 250:
print(player2+" wins")
logging.basicConfig(filename=("bobobwinner.log"), filemode='w', format='%(name)s - %(message)s')
logging.warning(player2+' won')
def k1():
horse2.forward(20)
onkey(k1, "w")
onkey(k2, "a")
onkey(k3, "d")
#onkey(k4, "Left")
#onkey(k5, "Down")
listen()
mainloop()
i have no error message however i have failed time after time to succeed. Please can someone help. I am well aware that turtle is a very limited game engine so if this is not possible is anybody aware how i could code my own module to supplement for colour detection in turtle.
回答1:
As @furas notes in his comment, we don't have color detection in turtle though we can get object detection at the tkinter level and then check colors. Below is a different approach: we build all the walls out of turtles and use distance calculations, in conjunction with the wall's length, to detect collision:
from turtle import Screen, Turtle
CURSOR_SIZE = 20
walls = []
def make_wall(turtle, distance):
turtle.forward(distance / 2)
clone = turtle.clone()
clone.shapesize(stretch_len=distance/CURSOR_SIZE)
clone.showturtle()
turtle.forward(distance / 2)
walls.append(clone)
def collision(turtle):
tx, ty = turtle.position()
for wall in walls:
if wall.distance(turtle) < CURSOR_SIZE / 2:
wall.color('red')
return True
wx, wy = wall.position()
heading = wall.heading()
_, stretch_len, _ = wall.shapesize()
half_length = stretch_len * (CURSOR_SIZE + 1) / 2
if heading in [0, 180]: # horizontal wall
if abs(ty - wy) < CURSOR_SIZE / 2 and abs(tx - wx) < half_length:
wall.color('red')
return True
elif heading in [90, 270]: # vertical wall
if abs(tx - wx) < CURSOR_SIZE / 2 and abs(ty - wy) < half_length:
wall.color('red')
return True
return False
def k3():
horse.right(90)
def k2():
horse.left(90)
def k1():
screen.onkey(None, "w")
horse.forward(15)
if horse.xcor() > 250:
screen.title("Player wins!")
elif collision(horse):
screen.title("Collision!")
else:
screen.onkey(k1, "w")
screen = Screen()
screen.setup(600, 600)
screen.title("Rendering")
screen.tracer(False)
mapper = Turtle()
mapper.shape("square")
mapper.hideturtle()
mapper.penup()
mapper.shapesize(stretch_wid=1/CURSOR_SIZE)
# making the map
make_wall(mapper, 100)
mapper.left(90)
make_wall(mapper, 50)
mapper.left(180)
make_wall(mapper, 50)
mapper.right(90)
make_wall(mapper, 100)
mapper.right(90)
make_wall(mapper, 50)
mapper.left(90)
mapper.forward(50)
make_wall(mapper, 50)
mapper.right(90)
make_wall(mapper, 50)
mapper.left(90)
make_wall(mapper, 50)
mapper.forward(50)
mapper.left(90)
make_wall(mapper, 100)
mapper.left(90)
make_wall(mapper, 50)
mapper.right(90)
make_wall(mapper, 50)
mapper.left(90)
make_wall(mapper, 50)
mapper.forward(50)
mapper.right(90)
make_wall(mapper, 100)
mapper.right(90)
make_wall(mapper, 240)
mapper.right(90)
make_wall(mapper, 400)
mapper.right(90)
make_wall(mapper, 500)
mapper.right(90)
make_wall(mapper, 450)
mapper.forward(50)
mapper.right(90)
make_wall(mapper, 500)
mapper.right(90)
make_wall(mapper, 100)
mapper.right(90)
make_wall(mapper, 100)
mapper.right(90)
make_wall(mapper, 50)
mapper.left(180)
make_wall(mapper, 50)
mapper.forward(100)
mapper.left(90)
make_wall(mapper, 50)
mapper.left(180)
make_wall(mapper, 100)
mapper.left(180)
make_wall(mapper, 150)
mapper.right(180)
make_wall(mapper, 150)
mapper.forward(150)
mapper.right(90)
make_wall(mapper, 150)
mapper.right(90)
make_wall(mapper, 150)
mapper.left(90)
make_wall(mapper, 50)
mapper.right(180)
mapper.forward(350)
mapper.left(90)
mapper.forward(10)
mapper.right(90)
make_wall(mapper, 50)
mapper.right(90)
make_wall(mapper, 50)
mapper.left(90)
make_wall(mapper, 50)
mapper.right(90)
make_wall(mapper, 50)
horse = Turtle()
horse.shape("triangle")
horse.color("blue")
horse.penup()
horse.goto(-250, -100)
screen.onkey(k1, "w")
screen.onkey(k2, "a")
screen.onkey(k3, "d")
screen.listen()
screen.tracer(True)
screen.title("Maze")
screen.mainloop()
This is complicated, particularly the collision() function, but it basically works. I've simplified your original example slightly to remove items that have nothing to do with the issue in question.
来源：https://stackoverflow.com/questions/57071985/how-do-i-make-colour-detection-in-turtle