(Python pygame)使用rect进行碰撞检测
作者：互联网
import pygame
import random
red = [255,0,0]
green = [0,255,0]
blue = [0,0,255]
white = [255,255,255]
black = [0,0,0]
UP = [0,-1]
DOWN = [0,1]
LEFT = [-1,0]
RIGHT = [1,0]
NOTMOVING = [0,0]
#constants end
#classes
class collidable:
x = 0
y = 0
w = 0
h = 0
rect = pygame.Rect(x,y,w,h)
color = [0,0,0]
def __init__(self,x,y,w,h,color):
self.x = x
self.y = y
self.w = w
self.h = h
self.color = color
self.rect = pygame.Rect(x,y,w,h)
def draw(self):
pygame.draw.rect(screen,self.color,[self.x,self.y,self.w,self.h],6)
class player:
x = 0
y = 0
speed = 0
rect = pygame.Rect(x,y,x+20,y+20)
def __init__(self,x,y,speed):
self.x = x
self.y = y
self.speed = speed
self.rect = pygame.Rect(self.x,self.y,self.x+20,self.y+20)
def draw(self):
if player_moving==LEFT:
pygame.draw.polygon(screen,black,[(self.x-10,self.y),(self.x+10,self.y-10),(self.x+10,self.y+10)])
elif player_moving==RIGHT:
pygame.draw.polygon(screen,black,[(self.x+10,self.y),(self.x-10,self.y-10),(self.x-10,self.y+10)])
elif player_moving==UP:
pygame.draw.polygon(screen,black,[(self.x,self.y-10),(self.x+10,self.y+10),(self.x-10,self.y+10)])
elif player_moving==DOWN:
pygame.draw.polygon(screen,black,[(self.x,self.y+10),(self.x+10,self.y-10),(self.x-10,self.y-10)])
else:
pygame.draw.rect(screen,black,pygame.Rect(self.x-10,self.y-10,20,20),6)
def setpos(self,x,y):
self.x = x
self.y = y
def move(self,direction):
self.x = self.x + direction[0]*self.speed
self.y = self.y + direction[1]*self.speed
#classes end
#globals
pygame.init()
screenSize = [800,600]
screenBGColor = white
screen=pygame.display.set_mode(screenSize)
pygame.display.set_caption("Move the Block")
player = player(screenSize[0]/2,screenSize[1]/2,9)
collidables = []
clock=pygame.time.Clock()
for i in range(10):
collidables.append(collidable(random.randrange(0,screenSize[0]),random.randrange(0,screenSize[1]),random.randrange(10,200),random.randrange(10,200),blue))
running = True
#globals end
#functions
def render():
screen.fill(screenBGColor)
clock.tick(60)
player.draw()
for c in collidables:
c.draw()
pygame.display.flip()
def tick(): #----------------HERE
for c in collidables:
if player.rect.colliderect(c.rect):
player_moving = NOTMOVING
print("hit")
player.move(player_moving)
#functions end
#main loop
while running==True:
for event in pygame.event.get():
if event.type==pygame.QUIT:
running = False
if event.type==pygame.KEYDOWN:
if event.key==pygame.K_LEFT:
player_moving = LEFT
if event.key==pygame.K_RIGHT:
player_moving = RIGHT
if event.key==pygame.K_UP:
player_moving = UP
if event.key==pygame.K_DOWN:
player_moving = DOWN
else:
player_moving = NOTMOVING
tick()
render()
#main loop end
pygame.quit()
我试图做一个简单的碰撞检测来禁用玩家在碰到可碰撞物体时的移动.但是,无论可碰撞对象位于何处,总是会引发碰撞.我不知道为什么播放器不移动,只有当播放器的中心距可碰撞对象的边界10像素时,此代码才应阻止移动.我确定该方法是错误的,但是我无法想到其他任何碰撞方式.
解决方法:
好吧,基本上,您是对的.您的程序很好,但是：
>在pygame文件中：
矩形=(位置X,位置Y,宽度,高度)
因此,您的代码(diff)：
- self.rect = pygame.Rect(self.x,self.y,self.x+20,self.y+20)
+ self.rect = pygame.Rect(self.x,self.y,self.20,self.20)
并且：
def move(self,direction):
self.x = self.x + direction[0]*self.speed
self.y = self.y + direction[1]*self.speed
+ self.rect = pygame.Rect(self.x,self.y,self.20,self.20)
您的代码中还有另一个小问题.例如,在tick()函数中,使用player_moving,但是在第一次迭代中,此变量永远不存在.
代码(运行)：
import pygame
import random
red = [255,0,0]
green = [0,255,0]
blue = [0,0,255]
white = [255,255,255]
black = [0,0,0]
UP = [0,-1]
DOWN = [0,1]
LEFT = [-1,0]
RIGHT = [1,0]
NOTMOVING = [0,0]
#constants end
#classes
class collidable:
x = 0
y = 0
w = 0
h = 0
rect = pygame.Rect(x,y,w,h)
color = [0,0,0]
def __init__(self,x,y,w,h,color):
self.x = x
self.y = y
self.w = w
self.h = h
self.color = color
self.rect = pygame.Rect(x,y,w,h)
def draw(self):
pygame.draw.rect(screen,self.color,[self.x,self.y,self.w,self.h],6)
class player:
x = 0
y = 0
speed = 0
rect = pygame.Rect(x,y,20,20)
def __init__(self,x,y,speed):
self.x = x
self.y = y
self.speed = speed
self.rect = pygame.Rect(self.x,self.y,20,20)
def draw(self):
if player_moving==LEFT:
pygame.draw.polygon(screen,black,[(self.x-10,self.y),(self.x+10,self.y-10),(self.x+10,self.y+10)])
elif player_moving==RIGHT:
pygame.draw.polygon(screen,black,[(self.x+10,self.y),(self.x-10,self.y-10),(self.x-10,self.y+10)])
elif player_moving==UP:
pygame.draw.polygon(screen,black,[(self.x,self.y-10),(self.x+10,self.y+10),(self.x-10,self.y+10)])
elif player_moving==DOWN:
pygame.draw.polygon(screen,black,[(self.x,self.y+10),(self.x+10,self.y-10),(self.x-10,self.y-10)])
else:
pygame.draw.rect(screen,black,pygame.Rect(self.x-10,self.y-10,20,20),6)
def setpos(self,x,y):
self.x = x
self.y = y
def move(self,direction):
self.x = self.x + direction[0]*self.speed
self.y = self.y + direction[1]*self.speed
self.rect = pygame.Rect(self.x,self.y,20,20)
#classes end
#globals
pygame.init()
screenSize = [800,600]
screenBGColor = white
screen=pygame.display.set_mode(screenSize)
pygame.display.set_caption("Move the Block")
player = player(screenSize[0]/2,screenSize[1]/2,9)
collidables = []
clock=pygame.time.Clock()
for i in range(10):
collidables.append(collidable(random.randrange(0,screenSize[0]),random.randrange(0,screenSize[1]),random.randrange(10,200),random.randrange(10,200),blue))
running = True
#globals end
player_moving = NOTMOVING
#functions
def render():
screen.fill(screenBGColor)
clock.tick(60)
player.draw()
for c in collidables:
c.draw()
pygame.display.flip()
def tick(player_moving): #----------------HERE
for c in collidables:
if player.rect.colliderect(c.rect):
player_moving = NOTMOVING
print("hit"+str(c.rect)+" with "+str(player.rect))
player.move(player_moving)
#functions end
#main loop
while running==True:
for event in pygame.event.get():
if event.type==pygame.QUIT:
running = False
if event.type==pygame.KEYDOWN:
if event.key==pygame.K_LEFT:
player_moving = LEFT
if event.key==pygame.K_RIGHT:
player_moving = RIGHT
if event.key==pygame.K_UP:
player_moving = UP
if event.key==pygame.K_DOWN:
player_moving = DOWN
else:
player_moving = NOTMOVING
tick(player_moving)
render()
#main loop end
pygame.quit()
标签：pygame,collision-detection,python 来源： https://codeday.me/bug/20191202/2085672.html