python - 多个精灵碰撞检测
问题描述
好的,所以我一直在试图弄清楚如何设置它并且无法使其正常工作。如果您熟悉它,我正在尝试获得类似于游戏Frogger中移动日志的功能。到目前为止,我只对一个碰撞检测起作用pygame.sprite.Group()
import pygame
import os
import random
os.environ['SDL_VIDEO_CENTERED'] = '1'
WIDTH = 480
HEIGHT = 720
FPS = 60
# Moving Object spacing setup first row
INSTANCE_COUNT = 0
BOX_WIDTH = 30
SPACING = 120
# object speed
pos_objspeed = 1
neg_objspeed = -1
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
pygame.init()
pygame.mixer.init()
screen = pygame.display.set_mode((WIDTH, HEIGHT))
clock = pygame.time.Clock()
class Player(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.Surface((30, 30))
self.image.fill(GREEN)
self.rect = self.image.get_rect()
self.rect.centerx = WIDTH / 2
self.rect.bottom = HEIGHT - 96
self.speedx = 0
self.speedy = 0
class MovingObj_Test(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.Surface((90, 30))
self.image.fill(RED)
self.rect = self.image.get_rect()
self.rect.x = (INSTANCE_COUNT * (SPACING+ BOX_WIDTH))
#self.rect.x = random.randrange(WIDTH)
self.rect.bottom = 384
self.speedx = pos_objspeed
def update(self):
self.rect.x += self.speedx
if self.rect.x >= 480:
self.rect.x = -30
self.rect.bottom = 384
self.speedx = pos_objspeed
class MovingObj_TestTwo(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.Surface((90, 30))
self.image.fill(RED)
self.rect = self.image.get_rect()
self.rect.x = (INSTANCE_COUNT * (SPACING+ BOX_WIDTH))
#self.rect.x = random.randrange(WIDTH)
self.rect.bottom = 336
self.speedx = neg_objspeed
def update(self):
self.rect.x += self.speedx
if self.rect.x >= 480:
self.rect.x = -30
self.rect.bottom = 336
self.speedx = neg_objspeed
all_sprites = pygame.sprite.Group()
movingobj_l = pygame.sprite.Group()
movingobj_r = pygame.sprite.Group()
for i in range (3):
INSTANCE_COUNT = i + 1
obj1 = MovingObj_Test()
all_sprites.add(obj1)
movingobj_l.add(obj1)
for i in range (3):
INSTANCE_COUNT = i + 1
obj2 = MovingObj_TestTwo()
all_sprites.add(obj2)
movingobj_r.add(obj2)
player = Player()
all_sprites.add(player)
running = True
onLogLeft = False
onLogRight = False
groundSpd = 48
while running:
clock.tick(FPS)
hitsleft = pygame.sprite.spritecollide(player, movingobj_l, False, pygame.sprite.collide_rect)
for hit in hitsleft:
player.speedx = pos_objspeed
player.speedy = 0
onLogLeft = True
if len(hitsleft) == 0:
onLogLeft = False
player.speedx = 0
player.speedy = 0
hitsright = pygame.sprite.spritecollide(player, movingobj_r, False, pygame.sprite.collide_rect)
for hit in hitsright:
player.speedx = neg_objspeed
player.speedy = 0
onLogRight = True
if len(hitsright) == 0:
onLogRight = False
player.speedx = 0
player.speedy = 0
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
player.speedx = -groundSpd
if event.key == pygame.K_RIGHT:
player.speedx = groundSpd
if event.key == pygame.K_UP:
player.speedy = -groundSpd
if event.key == pygame.K_DOWN:
player.speedy = groundSpd
if event.type == pygame.KEYUP and onLogLeft == False and onLogRight == False:
if event.key == pygame.K_LEFT:
player.speedx = 0
if event.key == pygame.K_RIGHT:
player.speedx = 0
if event.key == pygame.K_UP:
player.speedy = 0
if event.key == pygame.K_DOWN:
player.speedy = 0
if onLogLeft == False and onLogRight == False and player.rect.bottom <= 384:
running = False
player.rect.x += player.speedx
player.rect.y += player.speedy
if event.type == pygame.QUIT:
running = False
#player.rect.x += player.speedx
#player.rect.y += player.speedy
all_sprites.update()
screen.fill(BLACK)
all_sprites.draw(screen)
pygame.display.flip()
pygame.quit()
quit()
好的,所以在我的代码中
hitsright = pygame.sprite.spritecollide(player, movingobj_r, False, pygame.sprite.collide_rect)
检查碰撞并更新玩家的速度,但我期望它
hitsleft = pygame.sprite.spritecollide(player, movingobj_l, False, pygame.sprite.collide_rect)
没有做同样的事情。
如果有人有任何想法,我很困惑为什么会这样。另外,我该如何修复它以使其对两者都有效?
解决方案
left 和 right 的代码表现不同,因为如果hitsleft
检测到碰撞,player.speedx
则设置为:
for hit in hitsleft: player.speedx = pos_objspeed
但是,如果与hitsleft
那里发生冲突,则不会与之发生冲突hitsright
并player.speedx
立即重置:
if len(hitsright) == 0: onLogRight = False player.speedx = 0
您必须player.speedx
根据两个条件进行设置(例如在if
- elif
-else
语句中):
while running:
# [...]
hitsleft = pygame.sprite.spritecollide(player, movingobj_l, False, pygame.sprite.collide_rect)
onLogLeft = any(hitsleft)
hitsright = pygame.sprite.spritecollide(player, movingobj_r, False, pygame.sprite.collide_rect)
onLogRight = any(hitsright)
player.speedy = 0
if onLogLeft:
player.speedx = pos_objspeed
elif onLogRight:
player.speedx = neg_objspeed
else:
player.speedx = 0
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