我如何添加碰撞的对象(圆)的列表在tkinter?

Question

import time
from tkinter import *
import random
class SpaceField:
def __init__(self):
self.window = Tk()
self.window.title("Asteriods")
self.canvas = self.canvas_display() #creates canvas
self.asteriods = self.asteriod_creation_seperation() #creates asteroids 
self.active = True
self.move_active()  #Moves asteroids 
self.canvas.update()

def asteriod_creation_seperation(self): #creation of multple asteriods
asteriod_spacingx = random.randint(1,800)
asteriod_spacingy = random.randint(1,800)
asteriod_list = list() # could list([])
for i in range(15):
asteriod = self.canvas.create_oval( 30, 50 , 80 , 100 , tags="asteriod", width=2, outline="white")
asteriod_list.append("asteriod")
self.canvas.move(asteriod, asteriod_spacingx, asteriod_spacingy)
asteriod_spacingx = random.randint(1,500)
asteriod_spacingy = random.randint(1,500)
print(asteriod_spacingy)
return asteriod_list

小行星的创造。创建小行星并给它们随机位置。

def asteriod_update(self):  #asteriods movement method #MAin problem
x12 = 1
self.canvas.move("asteriod", 3, x12)
pos = self.canvas.coords("asteriod")
print(pos)
if (pos)[2] > 500:
x12 *= 5

我认为这是我需要添加碰撞检测的地方。我只是不知道如何把圆和碰撞的列表结合起来。

def move_active(self): #Basically a true loop
if self.active:
self.asteriod_update()
self.window.after(40, self.move_active)

def canvas_display(self):  #canvas
canvas = Canvas(self.window, width=500, height=400, background='black')
canvas.pack(expand=True, fill="both")
canvas.update()
return canvas

Canvas display nothing special

from tkinter import *
from random import randint as rnd
class SpaceField:
def __init__(self):
self.window = Tk()
self.window.title("Asteriods")
# Define canvas size and active flag
self.wide, self.high, self.active = 500, 400, True
self.canvas_display()
self.asteriod_creation_seperation()
def asteriod_creation_seperation(self):
self.asteroids, self.speed = [], []
size, radius = 50, 25
for i in range(15):
spacex = rnd(size, self.wide - size)
spacey = rnd(size, self.high - size)
self.asteroids.append( # Store oval item id
self.canvas.create_oval(
spacex, spacey, spacex+size, spacey+size,
width=2, tags = "asteriod", outline = "white"))
self.speed.append((rnd(1,4),rnd(1,4))) # Store random speed x, y
def asteriod_update(self): # MAIN DRIVER: Work on ALL asteroids
for i, a in enumerate(self.asteroids):
xx, yy = self.speed[i] # get speed data
x, y, w, h = self.canvas.coords(a)
# check for boundary hit then change direction and speed
if x < 0 or w > self.wide:
xx = -xx * rnd(1, 4)
if y < 0 or h > self.high:
yy = -yy * rnd(1, 4)
# Limit max and min speed then store it
self.speed[i] = (max( -4, min( xx, 4)), max( -4, min( yy, 4 )))
self.canvas.move(a, xx, yy) # update asteroid position
def move_active(self):
if self.active:
self.asteriod_update()
self.window.after(40, self.move_active)
def canvas_display(self):
self.canvas = Canvas(
self.window, width = self.wide,
height = self.high, background = "black")
self.canvas.pack(expand = True, fill = "both")
def run(self): # Begin asteroids here so that mainloop is executed
self.window.after(200, self.move_active)
self.window.mainloop()
if __name__ == "__main__":
SpaceF = SpaceField()
SpaceF.run()

Answer 1

《Asteroids》是一款经典游戏，但你的代码中存在许多问题。主要的是在初始化期间调用mainloop。这阻止了代码完成asteroid_update初始化。

另一个问题是tags方法基本上没有任何作用，同样使用CC_5来控制所有小行星也不起作用。

其他都可以，尽管你可以考虑使用多边形。

这是一种生成弹跳物体程序的方法。我插入了注释，描述了所使用的方法。

物体到达边界时改变速度和方向，因此它们的轨迹是随机的。

PP_8