Python 我想用Pygame做一个游戏。但是我的箭可以'；不要从正确的位置射击

Python版本：3.8.1

系统：Windows7-32位

看标题，我想做一个游戏，但我遇到了一个问题。玩家发射的箭不会出现在正确的位置。无论玩家的位置如何变化，箭总是从一个位置射出。 我没有使用团队，因为我发现这还不足以制作游戏。 请帮帮我

有一些代码：

steve_vs_monsters.py

import pygame
from settings import Settings
import key_event
from steve import Steve
from update_screen import screen_update
from arrow import Arrow

def run_game():
    """ """
    --snip--
    #
    steve = Steve(a_settings,screen)
    arrow = Arrow(a_settings,screen,steve)
    #
    arrows = []

    #
    while True: 
        #
        key_event.check_events(steve,arrow,arrows)
        #
        update_screen(a_settings,screen,steve,arrow,arrows)

run_game()

import pygame

class Arrow():
    """ """
    def __init__(self,a_settings,screen,steve):
        """ """
        --snip--
        #
        self.rect.centerx = steve.rect.centerx
        self.rect.bottom = steve.rect.top
        self.rect.left = steve.rect.right
        #
        self.center = float(self.rect.centerx)

    def draw_arrow(self,arrows):
        """ """
        for a_arrow in arrows:
            self.screen.blit(self.image,a_arrow[0:2])

    def update_rect(self,steve,arrows):  
        for a_arrow in arrows:
            a_arrow[0] += float(self.a_settings.arrow_speed)

            if a_arrow[0] > self.screen_rect.right:
                arrows.remove(a_arrow)

import pygame

def update_screen(a_settings,screen,steve,arrow,arrows):
    """ """
    screen.fill(a_settings.bg_color)
    steve.update_rect()
    arrow.update_rect(steve,arrows)
    steve.draw_steve()  
    arrow.draw_arrow(arrows)
    #
    pygame.display.flip()

import sys
import pygame

def check_keydown_events(event,steve,arrow,arrows):
    """ """
    if event.key == pygame.K_t:
        sys.exit()
    --snip--
    elif event.key==pygame.K_SPACE and len(arrows)<=4:
        arrows.append([arrow.center,arrow.rect.bottom,arrow.rect.left])

--snip--

def check_events(steve,arrow,arrows):
    """ """
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            sys.exit()
        elif event.type == pygame.KEYDOWN:
            check_keydown_events(event,steve,arrow,arrows)
        --snip--

箭头.py

import pygame
from settings import Settings
import key_event
from steve import Steve
from update_screen import screen_update
from arrow import Arrow

def run_game():
    """ """
    --snip--
    #
    steve = Steve(a_settings,screen)
    arrow = Arrow(a_settings,screen,steve)
    #
    arrows = []

    #
    while True: 
        #
        key_event.check_events(steve,arrow,arrows)
        #
        update_screen(a_settings,screen,steve,arrow,arrows)

run_game()

import pygame

class Arrow():
    """ """
    def __init__(self,a_settings,screen,steve):
        """ """
        --snip--
        #
        self.rect.centerx = steve.rect.centerx
        self.rect.bottom = steve.rect.top
        self.rect.left = steve.rect.right
        #
        self.center = float(self.rect.centerx)

    def draw_arrow(self,arrows):
        """ """
        for a_arrow in arrows:
            self.screen.blit(self.image,a_arrow[0:2])

    def update_rect(self,steve,arrows):  
        for a_arrow in arrows:
            a_arrow[0] += float(self.a_settings.arrow_speed)

            if a_arrow[0] > self.screen_rect.right:
                arrows.remove(a_arrow)

import pygame

def update_screen(a_settings,screen,steve,arrow,arrows):
    """ """
    screen.fill(a_settings.bg_color)
    steve.update_rect()
    arrow.update_rect(steve,arrows)
    steve.draw_steve()  
    arrow.draw_arrow(arrows)
    #
    pygame.display.flip()

import sys
import pygame

def check_keydown_events(event,steve,arrow,arrows):
    """ """
    if event.key == pygame.K_t:
        sys.exit()
    --snip--
    elif event.key==pygame.K_SPACE and len(arrows)<=4:
        arrows.append([arrow.center,arrow.rect.bottom,arrow.rect.left])

--snip--

def check_events(steve,arrow,arrows):
    """ """
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            sys.exit()
        elif event.type == pygame.KEYDOWN:
            check_keydown_events(event,steve,arrow,arrows)
        --snip--

更新屏幕.py

import pygame
from settings import Settings
import key_event
from steve import Steve
from update_screen import screen_update
from arrow import Arrow

def run_game():
    """ """
    --snip--
    #
    steve = Steve(a_settings,screen)
    arrow = Arrow(a_settings,screen,steve)
    #
    arrows = []

    #
    while True: 
        #
        key_event.check_events(steve,arrow,arrows)
        #
        update_screen(a_settings,screen,steve,arrow,arrows)

run_game()

import pygame

class Arrow():
    """ """
    def __init__(self,a_settings,screen,steve):
        """ """
        --snip--
        #
        self.rect.centerx = steve.rect.centerx
        self.rect.bottom = steve.rect.top
        self.rect.left = steve.rect.right
        #
        self.center = float(self.rect.centerx)

    def draw_arrow(self,arrows):
        """ """
        for a_arrow in arrows:
            self.screen.blit(self.image,a_arrow[0:2])

    def update_rect(self,steve,arrows):  
        for a_arrow in arrows:
            a_arrow[0] += float(self.a_settings.arrow_speed)

            if a_arrow[0] > self.screen_rect.right:
                arrows.remove(a_arrow)

import pygame

def update_screen(a_settings,screen,steve,arrow,arrows):
    """ """
    screen.fill(a_settings.bg_color)
    steve.update_rect()
    arrow.update_rect(steve,arrows)
    steve.draw_steve()  
    arrow.draw_arrow(arrows)
    #
    pygame.display.flip()

import sys
import pygame

def check_keydown_events(event,steve,arrow,arrows):
    """ """
    if event.key == pygame.K_t:
        sys.exit()
    --snip--
    elif event.key==pygame.K_SPACE and len(arrows)<=4:
        arrows.append([arrow.center,arrow.rect.bottom,arrow.rect.left])

--snip--

def check_events(steve,arrow,arrows):
    """ """
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            sys.exit()
        elif event.type == pygame.KEYDOWN:
            check_keydown_events(event,steve,arrow,arrows)
        --snip--

关键事件.py

import pygame
from settings import Settings
import key_event
from steve import Steve
from update_screen import screen_update
from arrow import Arrow

def run_game():
    """ """
    --snip--
    #
    steve = Steve(a_settings,screen)
    arrow = Arrow(a_settings,screen,steve)
    #
    arrows = []

    #
    while True: 
        #
        key_event.check_events(steve,arrow,arrows)
        #
        update_screen(a_settings,screen,steve,arrow,arrows)

run_game()

import pygame

class Arrow():
    """ """
    def __init__(self,a_settings,screen,steve):
        """ """
        --snip--
        #
        self.rect.centerx = steve.rect.centerx
        self.rect.bottom = steve.rect.top
        self.rect.left = steve.rect.right
        #
        self.center = float(self.rect.centerx)

    def draw_arrow(self,arrows):
        """ """
        for a_arrow in arrows:
            self.screen.blit(self.image,a_arrow[0:2])

    def update_rect(self,steve,arrows):  
        for a_arrow in arrows:
            a_arrow[0] += float(self.a_settings.arrow_speed)

            if a_arrow[0] > self.screen_rect.right:
                arrows.remove(a_arrow)

import pygame

def update_screen(a_settings,screen,steve,arrow,arrows):
    """ """
    screen.fill(a_settings.bg_color)
    steve.update_rect()
    arrow.update_rect(steve,arrows)
    steve.draw_steve()  
    arrow.draw_arrow(arrows)
    #
    pygame.display.flip()

import sys
import pygame

def check_keydown_events(event,steve,arrow,arrows):
    """ """
    if event.key == pygame.K_t:
        sys.exit()
    --snip--
    elif event.key==pygame.K_SPACE and len(arrows)<=4:
        arrows.append([arrow.center,arrow.rect.bottom,arrow.rect.left])

--snip--

def check_events(steve,arrow,arrows):
    """ """
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            sys.exit()
        elif event.type == pygame.KEYDOWN:
            check_keydown_events(event,steve,arrow,arrows)
        --snip--

导入系统 导入pygame def check_keydown_事件（事件、史蒂夫、箭头、箭头）： """ """ 如果event.key==pygame.K\u t： sys.exit（） --剪断--

---

elif event.key==pygame.K_SPACE and len（arrows）看起来代码最初创建了一个

箭头，该箭头位于
steve
的矩形中。当按下
K_SPACE
时，该
箭头将用作创建新箭头的基本位置

我认为应该使用当前的
steve
矩形来创建
Arrow
的新实例，而不是现有实例

例如：

def check_keydown_events(event,steve,arrow,arrows):
    """ """
    if event.key == pygame.K_t:
        sys.exit()
    --snip--
    elif event.key==pygame.K_SPACE and len(arrows)<=4:
        #arrows.append( [arrow.center, arrow.rect.bottom, arrow.rect.left] )
        arrows.append( [steve.center, steve.rect.top, steve.rect.right] )

然后它更灵活：

if ( steve_facing_left ):
    # facing left
    x_start = steve.rect.x    # start on Steve's left side
    arrows.append( Arrow( left_arrow_image, x_start, steve.rect.centery, -1 ) )
else:     
    # facing right
    x_start = steve.rect.x　+ steve.rect.width   # start on Steve's right side
    arrows.append( Arrow( right_arrow_image, x_start, steve.rect.centery, 1 ) )

随后：

arrows.append( Arrow( super_arrow_image, x_start, y_start, 3 ) )