如何在 python tkinter 中检查两个对象是否相互接触？
How to check if two objects touch each other in python tkinter?
我正在尝试创建一个函数，告诉我两个 canvas 对象（在我的代码中，rec 和 block）是否在 Tkinter 中相互接触。我试图用他们的坐标信息来这样做，但它似乎不起作用。你能帮帮我吗？
该函数将在我在下面的代码中创建的snake中使用，所以不要问我为什么代码这么长。
函数在第119行，same_poz
这是我的代码：
from tkinter import *
import time
import random
import threading
root = Tk()
root.title('Snake')
x, y = 484, 484
recX, recY = x // 2, y // 2
recW, recH = recX + 22, recY + 22
randoms = []
for i in range(484):
if i % 11 == 0:
randoms.append(i)
blockX, blockY = random.choice(randoms), random.choice(randoms)
blockW, blockH = blockX + 22, blockY + 22
c = Canvas(root, bg='black', width=x, height=y)
c.pack()
class Snake(threading.Thread):
def __init__(self, c, x, y, recX, recY, recW, recH, blockX, blockY, blockW, blockH):
super(Snake, self).__init__()
self.c = c
self.x = x
self.y = y
self.recX = recX
self.recY = recY
self.recW = recW
self.recH = recH
self.blockW = blockW
self.blockH = blockH
self.rec = c.create_rectangle(recX, recY, recW, recH, fill='red', outline='white')
self.blockX = blockX
self.blockY = blockY
self.block = c.create_rectangle(blockX, blockY, blockW, blockH, fill='green',
outline='white')
self.moving_right = False
self.moving_left = False
self.moving_up = False
self.moving_down = False
self.moving = False
def movingright(self):
self.moving_right = True
self.moving_left = False
self.moving_up = False
self.moving_down = False
self.moving = True
c.move(self.rec, 11, 0)
self.after4 = root.after(150, self.movingright)
def movingleft(self):
self.moving_left = True
self.moving_left = False
self.moving_up = False
self.moving_down = False
self.moving = True
c.move(self.rec, -11, 0)
self.after3 = root.after(150, self.movingleft)
def movingup(self):
self.moving_up = True
self.moving_right = False
self.moving_left = False
self.moving_up = False
self.moving = True
c.move(self.rec, 0, -11)
self.after = root.after(150, self.movingup)
def movingdown(self):
self.moving_down = True
self.moving_right = False
self.moving_left = False
self.moving_down = False
self.moving = True
c.move(self.rec, 0, 11)
self.after2 = root.after(150, self.movingdown)
def stop(self):
self.moving_right = False
self.moving_left = False
self.moving_up = False
self.moving_down = False
self.moving = False
try:
root.after_cancel(self.after)
except AttributeError:
pass
try:
root.after_cancel(self.after2)
except AttributeError:
pass
try:
root.after_cancel(self.after3)
except AttributeError:
pass
try:
root.after_cancel(self.after4)
except AttributeError:
pass
def move(self, n):
if n.keysym == 'Up':
self.stop()
self.movingup()
if n.keysym == 'Down':
self.stop()
self.movingdown()
if n.keysym == 'Right':
self.stop()
self.movingright()
if n.keysym == 'Left':
self.stop()
self.movingleft()
def same_poz(self):
if self.blockY == self.recY:
self.helpY = random.randint(10, self.y - self.blockY)
self.c.move(self.block, 0, self.helpY)
if self.blockX == self.recY:
self.helpX = random.randint(10, self.x - self.blockX)
self.c.move(self.block, 0, self.helpX)
if self.blockW == self.recW:
self.helpW = random.randint(10, self.x - self.blockW)
self.c.move(self.block, 0, self.helpW)
if self.blockH == self.recH:
self.helpH = random.randint(10, self.y - self.blockH)
self.c.move(self.block, 0, helpH)
cube = Snake(c, x, y, recX, recY, recW, recH, blockX, blockY, blockW, blockH)
cube.start()
cube.c.bind_all('<Key>', cube.move, cube.stop)
cube.c.bind_all('<Key>', cube.moving_left, cube.moving_right)
cube.c.bind_all('<Key', cube.moving_up, cube.moving_down)
cube.c.bind(cube.same_poz)
root.mainloop()
您提供的代码存在太多问题。我不知道为什么你还缺乏 Python 的基础知识时使用 Tkinter 进行编程。 （不想听起来刺耳）
- 我不知道你为什么决定从
threading.Thread 继承什么时候
你对 Thread 提供的任何东西都没有任何用处
class.
- 太多的实例参数根本用不着，太多的实例参数每次都必须更改。
- 不使用
elif 而是经常使用 if。
- 如果您使用线程来处理主循环之外的 Tkinter 更改，则无需使用
.after，因为它基本上就是这样做的。
- Tkinter 对每个键都有专用的绑定，包括键的组合。无需捕捉每一个按键事件。
- 如果您使用的是单个脚本，请使用
if __name__ == '__main__': 进行测试。
- 一些关于 Tkinter 的阅读 material - http://effbot.org/tkinterbook/
这里是代码的最小返工，可以正常工作。
import time
import random
import threading
from tkinter import *
MOVINGUP = 'u'
MOVINGDOWN = 'd'
MOVINGLEFT = 'l'
MOVINGRIGHT = 'r'
NOTMOVING = '0'
class Snake:
def __init__(self, root, recX, recY, recW, recH, blockX, blockY, blockW, blockH):
self.root = root
self.c = Canvas(root, bg='black', width=x, height=y)
self.c.pack()
self.rec = self.c.create_rectangle(recX, recY, recW, recH, fill='red', outline='white')
self.block = self.c.create_rectangle(blockX, blockY, blockW, blockH, fill='green', outline='white')
self.direction = NOTMOVING
self.root.bind('<Up>', lambda e: self.moveset(MOVINGUP))
self.root.bind('<Down>', lambda e: self.moveset(MOVINGDOWN))
self.root.bind('<Left>', lambda e: self.moveset(MOVINGLEFT))
self.root.bind('<Right>', lambda e: self.moveset(MOVINGRIGHT))
def moveset(self, direction):
self.direction = direction
def movement(self):
if self.direction == MOVINGUP:
self.c.move(self.rec, 0, -11)
elif self.direction == MOVINGDOWN:
self.c.move(self.rec, 0, 11)
elif self.direction == MOVINGLEFT:
self.c.move(self.rec, -11, 0)
elif self.direction == MOVINGRIGHT:
self.c.move(self.rec, 11, 0)
self.same_poz()
def run(self):
while True:
time.sleep(0.15)
self.movement()
def same_poz(self):
# Snake (x0, y0, x1, y1)
snakepos = self.c.bbox(self.rec)
# Food block (x0, y0, x1, y1)
food = self.c.bbox(self.block)
# If direction matters, if not then possible to only use self.hit in a single condition.
if self.direction == MOVINGRIGHT and self.hit(snakepos, food):
print('Caught the food moving right.')
elif self.direction == MOVINGLEFT and self.hit(snakepos, food):
print('Caught the food moving left.')
elif self.direction == MOVINGUP and self.hit(snakepos, food):
print('Caught the food moving up.')
elif self.direction == MOVINGDOWN and self.hit(snakepos, food):
print('Caught the food moving down.')
def hit(self, snakepos, food):
"""
Recieves coordinates of food block and snake block and returns if they collide.
:param snakepos: Tuple containing (x0, y0, x1, y1) of the snake.
:param food: Tuple containing (x0, y0, x1, y1) of the food block.
:return: Boolean whether they collide
"""
snakex = (snakepos[0], snakepos[2])
snakey = (snakepos[1], snakepos[3])
foodx = (food[0], food[2])
foody = (food[1], food[3])
# Returns True if any of the snake x cooridnates are between the food x coordinates, or both x coordinates match.
if any((foodx[0] < xcoord < foodx[1] for xcoord in snakex)) or foodx == snakex:
# Returns True if any of the snake y cooridnates are between the food y coordinates, or both y coordinates match.
return any((foody[0] < ycoord < foody[1] for ycoord in snakey)) or foody == snakey
return False
if __name__ == '__main__':
root = Tk()
root.title('Snake')
x, y = 484, 484
recX, recY = x // 2, y // 2
recW, recH = recX + 22, recY + 22
randoms = []
for i in range(484):
if i % 11 == 0:
randoms.append(i)
blockX, blockY = random.choice(randoms), random.choice(randoms)
blockW, blockH = blockX + 22, blockY + 22
snake = Snake(root, recX, recY, recW, recH, blockX, blockY, blockW, blockH)
threading.Thread(target=snake.run, daemon=True).start()
root.mainloop()
我正在尝试创建一个函数，告诉我两个 canvas 对象（在我的代码中，rec 和 block）是否在 Tkinter 中相互接触。我试图用他们的坐标信息来这样做，但它似乎不起作用。你能帮帮我吗？
该函数将在我在下面的代码中创建的snake中使用，所以不要问我为什么代码这么长。
函数在第119行，same_poz
这是我的代码：
from tkinter import *
import time
import random
import threading
root = Tk()
root.title('Snake')
x, y = 484, 484
recX, recY = x // 2, y // 2
recW, recH = recX + 22, recY + 22
randoms = []
for i in range(484):
if i % 11 == 0:
randoms.append(i)
blockX, blockY = random.choice(randoms), random.choice(randoms)
blockW, blockH = blockX + 22, blockY + 22
c = Canvas(root, bg='black', width=x, height=y)
c.pack()
class Snake(threading.Thread):
def __init__(self, c, x, y, recX, recY, recW, recH, blockX, blockY, blockW, blockH):
super(Snake, self).__init__()
self.c = c
self.x = x
self.y = y
self.recX = recX
self.recY = recY
self.recW = recW
self.recH = recH
self.blockW = blockW
self.blockH = blockH
self.rec = c.create_rectangle(recX, recY, recW, recH, fill='red', outline='white')
self.blockX = blockX
self.blockY = blockY
self.block = c.create_rectangle(blockX, blockY, blockW, blockH, fill='green',
outline='white')
self.moving_right = False
self.moving_left = False
self.moving_up = False
self.moving_down = False
self.moving = False
def movingright(self):
self.moving_right = True
self.moving_left = False
self.moving_up = False
self.moving_down = False
self.moving = True
c.move(self.rec, 11, 0)
self.after4 = root.after(150, self.movingright)
def movingleft(self):
self.moving_left = True
self.moving_left = False
self.moving_up = False
self.moving_down = False
self.moving = True
c.move(self.rec, -11, 0)
self.after3 = root.after(150, self.movingleft)
def movingup(self):
self.moving_up = True
self.moving_right = False
self.moving_left = False
self.moving_up = False
self.moving = True
c.move(self.rec, 0, -11)
self.after = root.after(150, self.movingup)
def movingdown(self):
self.moving_down = True
self.moving_right = False
self.moving_left = False
self.moving_down = False
self.moving = True
c.move(self.rec, 0, 11)
self.after2 = root.after(150, self.movingdown)
def stop(self):
self.moving_right = False
self.moving_left = False
self.moving_up = False
self.moving_down = False
self.moving = False
try:
root.after_cancel(self.after)
except AttributeError:
pass
try:
root.after_cancel(self.after2)
except AttributeError:
pass
try:
root.after_cancel(self.after3)
except AttributeError:
pass
try:
root.after_cancel(self.after4)
except AttributeError:
pass
def move(self, n):
if n.keysym == 'Up':
self.stop()
self.movingup()
if n.keysym == 'Down':
self.stop()
self.movingdown()
if n.keysym == 'Right':
self.stop()
self.movingright()
if n.keysym == 'Left':
self.stop()
self.movingleft()
def same_poz(self):
if self.blockY == self.recY:
self.helpY = random.randint(10, self.y - self.blockY)
self.c.move(self.block, 0, self.helpY)
if self.blockX == self.recY:
self.helpX = random.randint(10, self.x - self.blockX)
self.c.move(self.block, 0, self.helpX)
if self.blockW == self.recW:
self.helpW = random.randint(10, self.x - self.blockW)
self.c.move(self.block, 0, self.helpW)
if self.blockH == self.recH:
self.helpH = random.randint(10, self.y - self.blockH)
self.c.move(self.block, 0, helpH)
cube = Snake(c, x, y, recX, recY, recW, recH, blockX, blockY, blockW, blockH)
cube.start()
cube.c.bind_all('<Key>', cube.move, cube.stop)
cube.c.bind_all('<Key>', cube.moving_left, cube.moving_right)
cube.c.bind_all('<Key', cube.moving_up, cube.moving_down)
cube.c.bind(cube.same_poz)
root.mainloop()
您提供的代码存在太多问题。我不知道为什么你还缺乏 Python 的基础知识时使用 Tkinter 进行编程。 （不想听起来刺耳）
- 我不知道你为什么决定从
threading.Thread继承什么时候 你对Thread提供的任何东西都没有任何用处 class. - 太多的实例参数根本用不着，太多的实例参数每次都必须更改。
- 不使用
elif而是经常使用if。 - 如果您使用线程来处理主循环之外的 Tkinter 更改，则无需使用
.after，因为它基本上就是这样做的。 - Tkinter 对每个键都有专用的绑定，包括键的组合。无需捕捉每一个按键事件。
- 如果您使用的是单个脚本，请使用
if __name__ == '__main__':进行测试。 - 一些关于 Tkinter 的阅读 material - http://effbot.org/tkinterbook/
这里是代码的最小返工，可以正常工作。
import time
import random
import threading
from tkinter import *
MOVINGUP = 'u'
MOVINGDOWN = 'd'
MOVINGLEFT = 'l'
MOVINGRIGHT = 'r'
NOTMOVING = '0'
class Snake:
def __init__(self, root, recX, recY, recW, recH, blockX, blockY, blockW, blockH):
self.root = root
self.c = Canvas(root, bg='black', width=x, height=y)
self.c.pack()
self.rec = self.c.create_rectangle(recX, recY, recW, recH, fill='red', outline='white')
self.block = self.c.create_rectangle(blockX, blockY, blockW, blockH, fill='green', outline='white')
self.direction = NOTMOVING
self.root.bind('<Up>', lambda e: self.moveset(MOVINGUP))
self.root.bind('<Down>', lambda e: self.moveset(MOVINGDOWN))
self.root.bind('<Left>', lambda e: self.moveset(MOVINGLEFT))
self.root.bind('<Right>', lambda e: self.moveset(MOVINGRIGHT))
def moveset(self, direction):
self.direction = direction
def movement(self):
if self.direction == MOVINGUP:
self.c.move(self.rec, 0, -11)
elif self.direction == MOVINGDOWN:
self.c.move(self.rec, 0, 11)
elif self.direction == MOVINGLEFT:
self.c.move(self.rec, -11, 0)
elif self.direction == MOVINGRIGHT:
self.c.move(self.rec, 11, 0)
self.same_poz()
def run(self):
while True:
time.sleep(0.15)
self.movement()
def same_poz(self):
# Snake (x0, y0, x1, y1)
snakepos = self.c.bbox(self.rec)
# Food block (x0, y0, x1, y1)
food = self.c.bbox(self.block)
# If direction matters, if not then possible to only use self.hit in a single condition.
if self.direction == MOVINGRIGHT and self.hit(snakepos, food):
print('Caught the food moving right.')
elif self.direction == MOVINGLEFT and self.hit(snakepos, food):
print('Caught the food moving left.')
elif self.direction == MOVINGUP and self.hit(snakepos, food):
print('Caught the food moving up.')
elif self.direction == MOVINGDOWN and self.hit(snakepos, food):
print('Caught the food moving down.')
def hit(self, snakepos, food):
"""
Recieves coordinates of food block and snake block and returns if they collide.
:param snakepos: Tuple containing (x0, y0, x1, y1) of the snake.
:param food: Tuple containing (x0, y0, x1, y1) of the food block.
:return: Boolean whether they collide
"""
snakex = (snakepos[0], snakepos[2])
snakey = (snakepos[1], snakepos[3])
foodx = (food[0], food[2])
foody = (food[1], food[3])
# Returns True if any of the snake x cooridnates are between the food x coordinates, or both x coordinates match.
if any((foodx[0] < xcoord < foodx[1] for xcoord in snakex)) or foodx == snakex:
# Returns True if any of the snake y cooridnates are between the food y coordinates, or both y coordinates match.
return any((foody[0] < ycoord < foody[1] for ycoord in snakey)) or foody == snakey
return False
if __name__ == '__main__':
root = Tk()
root.title('Snake')
x, y = 484, 484
recX, recY = x // 2, y // 2
recW, recH = recX + 22, recY + 22
randoms = []
for i in range(484):
if i % 11 == 0:
randoms.append(i)
blockX, blockY = random.choice(randoms), random.choice(randoms)
blockW, blockH = blockX + 22, blockY + 22
snake = Snake(root, recX, recY, recW, recH, blockX, blockY, blockW, blockH)
threading.Thread(target=snake.run, daemon=True).start()
root.mainloop()