在类中使用冲突列表

Question

我创建了一个类来创建矩形并将它们放在列表中。我不希望它们发生碰撞，所以我使用了collestlist，但它不起作用。矩形仍在碰撞。

我还希望矩形向下移动，并在击中特定点时改变x位置，

我可以这样做，但我不确定它是否阻止了冲突列表工作

查看下面的代码以获得更多说明。

import pygame
import random
from pygame.locals import *
import time 
pygame.init()
a = 255,255,255
b = 0,0,0
c = 80,255,0
d = 0,125,125
r1 = (b,c,d)
r = random.choice(r1)
p_x = 500
p_y = 1399
width = 500
height = 1890
display = pygame.display.set_mode((width,height))
title = pygame.display.set_caption("Game")
clock = pygame.time.Clock()
run = False
exit_game = False
x = random.randrange(10,900)
y = random.randrange(10,900)
sy = 10
w = random.randrange(40,90)
h = random.randrange(40,90)
rectangles =[]
class Rectangle:
def __init__(self ,color ,x,y,w,h):
self.c = color
self.x = x
self.y = y
self.w = w
self.h = h
self.rect =pygame.Rect(self.x ,self.y ,self.w ,self.h)

def draw(self):
pygame.draw.rect(display , self.c ,(self.x ,self.y ,self.w,self.h))

self.y += sy
if self.y > height:
self.y = -25
self.x = random.randint(10,900)
return self.rect
return self.rect







for count in range(5):
r_c = random.randint(0,255) , random.randint(0,255) , random.randint(0,255) 

r_x = random.randint(10,900)
r_y = random.randint(10,79)
r_w = random.randint(60,100) 
r_h = random.randint(40,80) 


rectangle = Rectangle(r_c ,r_x,r_y,r_w,r_h)
rectangles.append(rectangle)




while not run:
display.fill(a)
p =pygame.draw.rect(display,c,(p_x ,p_y ,56,56))


for event in pygame.event.get():
if event.type == pygame.QUIT:
exit_game = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_q:
p_x -= 60
if event.key == pygame.K_p:
p_x += 60

for rectangle in rectangles:
if rectangle.rect.collidelist(rectangles) > -1:     
rectangle.draw()


pygame.display.update()
clock.tick(60)

pygame.quit()
quit()

Answer 1

collidelist()评估单个pygame.Rect对象和pygame.Rect对象列表之间的冲突。从类中删除属性.x、.y、.w和.h，但添加一个新的方法更新：

class Rectangle:
def __init__(self, color, x, y, w, h):
self.c = color
self.rect = pygame.Rect(x, y, w, h)
def update(self):
self.rect.y += sy
if self.rect.y > height:
self.rect.y = -25
self.rect.x = random.randint(10,900)
def draw(self):
pygame.draw.rect(display, self.c, self.rect)

在进行碰撞测试之前，您必须生成pygame.Rect对象的列表。由于每个矩形都在列表中，碰撞测试将始终至少找到一个矩形(本身(。使用collidelistall()并测试碰撞矩形的数量是否小于2:

while not run:
# [...]
for rectangle in rectangles:
rectangle.update()
rectlist = [r.rect for r in rectangles]
if len(rectangle.rect.collidelistall(rectlist)) < 2:     
rectangle.draw()

---

无论如何，我建议创建不相交的矩形。初始化时：

rectangles = []        
rectlist = []           
for count in range(5):
r_c = random.randint(0,255) , random.randint(0,255) , random.randint(0,255) 

create_new = True
while create_new:
r_x = random.randint(10,900)
r_y = random.randint(10,79)
r_w = random.randint(60,100) 
r_h = random.randint(40,80) 
rectangle = Rectangle(r_c, r_x,r_y,r_w,r_h)
create_new = rectangle.rect.collidelist(rectlist) > -1

rectangles.append(rectangle)
rectlist.append(rectangle.rect)

并且在类Rectangle的方法update中：

class Rectangle:
# [...]
def update(self, rectangles):
self.rect.y += sy
if self.rect.y > height:
rectlist = [r.rect for r in rectangles if r != self]
self.rect.y = -25
self.rect.x = random.randint(10,900)
while self.rect.collidelist(rectlist) > -1:
self.rect.x = random.randint(10,900)

---

完整示例：

import pygame
import random
from pygame.locals import *
import time 
pygame.init()
a = 255,255,255
b = 0,0,0
c = 80,255,0
d = 0,125,125
r1 = (b,c,d)
r = random.choice(r1)
p_x = 500
p_y = 1399
width = 500
height = 1890
display = pygame.display.set_mode((width,height))
title = pygame.display.set_caption("Game")
clock = pygame.time.Clock()
run = False
exit_game = False
sy = 10
class Rectangle:
def __init__(self, color, x, y, w, h):
self.c = color
self.rect = pygame.Rect(x, y, w, h)
def update(self, rectangles):
self.rect.y += sy
if self.rect.y > height:
rectlist = [r.rect for r in rectangles if r != self]
self.rect.y = -25
self.rect.x = random.randint(10,900)
while self.rect.collidelist(rectlist) > -1:
self.rect.x = random.randint(10,900)

def draw(self):
pygame.draw.rect(display, self.c, self.rect)
rectangles = []        
rectlist = []           
for count in range(5):
r_c = random.randint(0,255) , random.randint(0,255) , random.randint(0,255) 

create_new = True
while create_new:
r_x = random.randint(10,900)
r_y = random.randint(10,79)
r_w = random.randint(60,100) 
r_h = random.randint(40,80) 
rectangle = Rectangle(r_c, r_x,r_y,r_w,r_h)
create_new = rectangle.rect.collidelist(rectlist) > -1

rectangles.append(rectangle)
rectlist.append(rectangle.rect)
while not run:
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit_game = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_q:
p_x -= 60
if event.key == pygame.K_p:
p_x += 60

for rectangle in rectangles[:]:
rectangle.update(rectangles)

display.fill(a)
p = pygame.draw.rect(display,c,(p_x ,p_y ,56,56))
for rectangle in rectangles:
rectangle.draw()
pygame.display.update()
clock.tick(60)

pygame.quit()
quit()