Pygame 中简单 2D 平台游戏的碰撞检测问题
Issue with Collision Detection in Pygame for simple 2D Platformer
这是我的第一个 post 所以请告诉我是否需要更改任何内容。
我正在尝试创建一个简单的测试 2D 平台游戏，这是我在没有教程的情况下进行的第一个 pygame 项目。我遇到的问题是由于这个 can_jump 变量引起的。我正在使用此变量来阻止玩家在不在平台或屏幕底部时跳跃。我曾尝试过其他方法，但这就是我的结局。我觉得我已经很接近了。
目前的问题似乎是变量 self.can_jump1 在平台循环中不断地在 True 和 False 之间交换（恰好在 3 False 秒每 True 我注意到）站在平台上时，我将其隔离到 collision_check() 中的评论部分。我不知道为什么会这样，据我所知，其余代码都按我的意愿工作。
如果需要，我很乐意提供额外的 information/clarification。
这是我的代码：
import pygame, sys, random
#---Classes----------------------------------------#
class Block(pygame.sprite.Sprite): #inherited by rest of classes
def __init__(self,path,x_pos,y_pos,size_x,size_y):
super().__init__()
self.image = pygame.transform.scale(pygame.image.load(path).convert_alpha(),(size_x,size_y))
self.rect = self.image.get_rect(center = (x_pos,y_pos))
class PlatformRect(pygame.sprite.Sprite):
def __init__(self,x_pos,y_pos,size_x,size_y,colour,players):
super().__init__()
self.center_x = x_pos
self.center_y = y_pos
self.size_x = size_x
self.size_y = size_y
self.colour = colour
self.players = players
self.can_jump1 = None
self.image = pygame.Surface((self.size_x,self.size_y))
self.image.fill(self.colour)
self.rect = self.image.get_rect(center = (self.center_x,self.center_y))
def collision_check(self):
if pygame.sprite.spritecollide(self,self.players,False):
collision_paddle = pygame.sprite.spritecollide(self,self.players,False)[0].rect
if abs(self.rect.top - collision_paddle.bottom) < 10:
collision_paddle.bottom = self.rect.top
player.movement_y = 0
self.can_jump1 = True
else: #error isolated to here,consistently fluctuates between True and False, not sure why
self.can_jump1 = False
print(self.can_jump1) #if standing on platform should only produce True, everywhere else produce False
def can_jump_check(self):
return self.can_jump1
def update(self):
self.collision_check()
class Player(Block):
def __init__(self,path,x_pos,y_pos,size_x,size_y,speed_x,acceleration_y):
super().__init__(path,x_pos,y_pos,size_x,size_y)
self.size_x = size_x
self.size_y = size_y
self.speed_x = speed_x
self.acceleration_y = acceleration_y
self.movement_x = 0
self.movement_y = 0
def screen_constrain(self):
if self.rect.bottom >= sresy:
self.rect.bottom = sresy
if self.rect.left <= 0:
self.rect.left = 0
if self.rect.right >= sresx:
self.rect.right = sresx
def update(self):
if abs(self.movement_y) <= 9:
self.movement_y += GRAVITY
self.rect.centery += self.movement_y
self.rect.centerx += self.movement_x
self.screen_constrain()
class GameManager:
def __init__(self,player_group,platform_group):
self.player_group = player_group
self.platform_group = platform_group
self.can_jump = True
def run_game(self):
#---drawing---#
self.player_group.draw(screen)
self.platform_group.draw(screen)
#---updating---#
self.player_group.update()
self.platform_group.update()
def game_checking(self):
#---checking---#
for sprite_platform in self.platform_group.sprites():
if not sprite_platform.can_jump_check() == True:
self.can_jump = False
else:
self.can_jump = True
return self.can_jump
#---Setup------------------------------------------#
#---constants-----#
global GRAVITY
GRAVITY = 0.25
#---Gamevariables-----#
can_jump = True
#---colour---#
bg_colour = (50,50,50)
white_colour = (255,255,255)
black_colour = (0,0,0)
#---res---#
resx = 900
resy = 675
sresx = resx - 50
sresy = resy - 50
#---start window-----#
clock = pygame.time.Clock()
screendisplay = pygame.display.set_mode((resx,resy))
screendisplay.fill(bg_colour)
pygame.display.set_caption("PlatformerGame1 started 09/02/2021")
screen = pygame.Surface((sresx,sresy))
screen.fill(white_colour)
#---startgame-----#
player = Player("assets\pics\TestPlayerFigure1_256512.png",100,100,32,64,10,30)
player_group = pygame.sprite.GroupSingle()
player_group.add(player)
platform1 = PlatformRect(100,550,100,10,black_colour,player_group)
platform_group = pygame.sprite.Group()
platform_group.add(platform1)
game_manager = GameManager(player_group,platform_group)
#---Loop--------------------------------------------#
while True:
#---events-----#
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
pygame.quit()
sys.exit()
if event.key == pygame.K_SPACE:
if can_jump == True:
player.movement_y = 0
player.movement_y -= player.acceleration_y * GRAVITY
if event.key == pygame.K_a:
player.movement_x -= player.speed_x
if event.key == pygame.K_d:
player.movement_x += player.speed_x
if event.type == pygame.KEYUP:
if event.key == pygame.K_SPACE:
if player.movement_y < 0:
player.movement_y = 0
if event.key == pygame.K_a:
player.movement_x += player.speed_x
if event.key == pygame.K_d:
player.movement_x -= player.speed_x
#---background---#
screendisplay.blit(screen,(25,25))
screen.fill(white_colour)
#---running---#
game_manager.run_game()
if not game_manager.game_checking() == True and player.rect.bottom < sresy:
can_jump = False
else:
can_jump = True
#print(can_jump)
#---updating-----#
pygame.display.update()
clock.tick(60)
当玩家站在平台上时，玩家不会与平台发生碰撞，self.can_jump1设置为False。测试玩家是否在平台上，当玩家不与平台发生碰撞时：
self.can_jump1 = False
self.can_jump1 = self.rect.top == self.players.sprites()[0].rect.bottom
方法collision_check:
class PlatformRect(pygame.sprite.Sprite):
# [...]
def collision_check(self):
collide_list = pygame.sprite.spritecollide(self,self.players,False)
if collide_list:
collision_paddle = collide_list[0].rect
if abs(self.rect.top - collision_paddle.bottom) < 10:
collision_paddle.bottom = self.rect.top
player.movement_y = 0
self.can_jump1 = True
else:
self.can_jump1 = self.rect.top == self.players.sprites()[0].rect.bottom
GameManager.game_checking需要检查plyer是否与任何平台发生碰撞：
class GameManager:
# [...]
def game_checking(self):
#---checking---#
self.can_jump = False
for sprite_platform in self.platform_group.sprites():
if sprite_platform.can_jump_check() == True:
self.can_jump = True
return self.can_jump
这可以用 any 函数简化：
class PlatformRect(pygame.sprite.Sprite):
# [...]
def game_checking(self):
#---checking---#
self.can_jump = any(p.can_jump_check() for p in self.platform_group)
return self.can_jump
这是我的第一个 post 所以请告诉我是否需要更改任何内容。
我正在尝试创建一个简单的测试 2D 平台游戏，这是我在没有教程的情况下进行的第一个 pygame 项目。我遇到的问题是由于这个 can_jump 变量引起的。我正在使用此变量来阻止玩家在不在平台或屏幕底部时跳跃。我曾尝试过其他方法，但这就是我的结局。我觉得我已经很接近了。
目前的问题似乎是变量 self.can_jump1 在平台循环中不断地在 True 和 False 之间交换（恰好在 3 False 秒每 True 我注意到）站在平台上时，我将其隔离到 collision_check() 中的评论部分。我不知道为什么会这样，据我所知，其余代码都按我的意愿工作。
如果需要，我很乐意提供额外的 information/clarification。
这是我的代码：
import pygame, sys, random
#---Classes----------------------------------------#
class Block(pygame.sprite.Sprite): #inherited by rest of classes
def __init__(self,path,x_pos,y_pos,size_x,size_y):
super().__init__()
self.image = pygame.transform.scale(pygame.image.load(path).convert_alpha(),(size_x,size_y))
self.rect = self.image.get_rect(center = (x_pos,y_pos))
class PlatformRect(pygame.sprite.Sprite):
def __init__(self,x_pos,y_pos,size_x,size_y,colour,players):
super().__init__()
self.center_x = x_pos
self.center_y = y_pos
self.size_x = size_x
self.size_y = size_y
self.colour = colour
self.players = players
self.can_jump1 = None
self.image = pygame.Surface((self.size_x,self.size_y))
self.image.fill(self.colour)
self.rect = self.image.get_rect(center = (self.center_x,self.center_y))
def collision_check(self):
if pygame.sprite.spritecollide(self,self.players,False):
collision_paddle = pygame.sprite.spritecollide(self,self.players,False)[0].rect
if abs(self.rect.top - collision_paddle.bottom) < 10:
collision_paddle.bottom = self.rect.top
player.movement_y = 0
self.can_jump1 = True
else: #error isolated to here,consistently fluctuates between True and False, not sure why
self.can_jump1 = False
print(self.can_jump1) #if standing on platform should only produce True, everywhere else produce False
def can_jump_check(self):
return self.can_jump1
def update(self):
self.collision_check()
class Player(Block):
def __init__(self,path,x_pos,y_pos,size_x,size_y,speed_x,acceleration_y):
super().__init__(path,x_pos,y_pos,size_x,size_y)
self.size_x = size_x
self.size_y = size_y
self.speed_x = speed_x
self.acceleration_y = acceleration_y
self.movement_x = 0
self.movement_y = 0
def screen_constrain(self):
if self.rect.bottom >= sresy:
self.rect.bottom = sresy
if self.rect.left <= 0:
self.rect.left = 0
if self.rect.right >= sresx:
self.rect.right = sresx
def update(self):
if abs(self.movement_y) <= 9:
self.movement_y += GRAVITY
self.rect.centery += self.movement_y
self.rect.centerx += self.movement_x
self.screen_constrain()
class GameManager:
def __init__(self,player_group,platform_group):
self.player_group = player_group
self.platform_group = platform_group
self.can_jump = True
def run_game(self):
#---drawing---#
self.player_group.draw(screen)
self.platform_group.draw(screen)
#---updating---#
self.player_group.update()
self.platform_group.update()
def game_checking(self):
#---checking---#
for sprite_platform in self.platform_group.sprites():
if not sprite_platform.can_jump_check() == True:
self.can_jump = False
else:
self.can_jump = True
return self.can_jump
#---Setup------------------------------------------#
#---constants-----#
global GRAVITY
GRAVITY = 0.25
#---Gamevariables-----#
can_jump = True
#---colour---#
bg_colour = (50,50,50)
white_colour = (255,255,255)
black_colour = (0,0,0)
#---res---#
resx = 900
resy = 675
sresx = resx - 50
sresy = resy - 50
#---start window-----#
clock = pygame.time.Clock()
screendisplay = pygame.display.set_mode((resx,resy))
screendisplay.fill(bg_colour)
pygame.display.set_caption("PlatformerGame1 started 09/02/2021")
screen = pygame.Surface((sresx,sresy))
screen.fill(white_colour)
#---startgame-----#
player = Player("assets\pics\TestPlayerFigure1_256512.png",100,100,32,64,10,30)
player_group = pygame.sprite.GroupSingle()
player_group.add(player)
platform1 = PlatformRect(100,550,100,10,black_colour,player_group)
platform_group = pygame.sprite.Group()
platform_group.add(platform1)
game_manager = GameManager(player_group,platform_group)
#---Loop--------------------------------------------#
while True:
#---events-----#
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
pygame.quit()
sys.exit()
if event.key == pygame.K_SPACE:
if can_jump == True:
player.movement_y = 0
player.movement_y -= player.acceleration_y * GRAVITY
if event.key == pygame.K_a:
player.movement_x -= player.speed_x
if event.key == pygame.K_d:
player.movement_x += player.speed_x
if event.type == pygame.KEYUP:
if event.key == pygame.K_SPACE:
if player.movement_y < 0:
player.movement_y = 0
if event.key == pygame.K_a:
player.movement_x += player.speed_x
if event.key == pygame.K_d:
player.movement_x -= player.speed_x
#---background---#
screendisplay.blit(screen,(25,25))
screen.fill(white_colour)
#---running---#
game_manager.run_game()
if not game_manager.game_checking() == True and player.rect.bottom < sresy:
can_jump = False
else:
can_jump = True
#print(can_jump)
#---updating-----#
pygame.display.update()
clock.tick(60)
当玩家站在平台上时，玩家不会与平台发生碰撞，self.can_jump1设置为False。测试玩家是否在平台上，当玩家不与平台发生碰撞时：
self.can_jump1 = False
self.can_jump1 = self.rect.top == self.players.sprites()[0].rect.bottom
方法collision_check:
class PlatformRect(pygame.sprite.Sprite):
# [...]
def collision_check(self):
collide_list = pygame.sprite.spritecollide(self,self.players,False)
if collide_list:
collision_paddle = collide_list[0].rect
if abs(self.rect.top - collision_paddle.bottom) < 10:
collision_paddle.bottom = self.rect.top
player.movement_y = 0
self.can_jump1 = True
else:
self.can_jump1 = self.rect.top == self.players.sprites()[0].rect.bottom
GameManager.game_checking需要检查plyer是否与任何平台发生碰撞：
class GameManager:
# [...]
def game_checking(self):
#---checking---#
self.can_jump = False
for sprite_platform in self.platform_group.sprites():
if sprite_platform.can_jump_check() == True:
self.can_jump = True
return self.can_jump
这可以用 any 函数简化：
class PlatformRect(pygame.sprite.Sprite):
# [...]
def game_checking(self):
#---checking---#
self.can_jump = any(p.can_jump_check() for p in self.platform_group)
return self.can_jump