self.screen.blit(image,pos)
时间: 2023-11-23 22:07:45 浏览: 36
这段代码是将一张图像绘制到游戏屏幕上的指定位置。其中,`image` 是需要绘制的图像,`pos` 是图像在屏幕上的位置。`self.screen` 是游戏的主屏幕,是一个 pygame.Surface 对象。这个方法可以在游戏循环中被调用,以实现不断更新游戏屏幕的效果。
你想问什么关于这段代码的问题呢?
相关问题
class firstpage: def init(self,screen): self.screen = screen self.font = pygame.font.Font("D:\Virtual stdio2022\华文行楷.ttf", 36) self.button1 = self.font.render("登录/注册", True, BLACK) self.button1_rect=self.button1.get_rect(center=(SCREEN_WIDTH/2, SCREEN_HEIGHT/2+100)) def draw(self): pygame.display.blit(background,(0,0)) pygame.draw.rect(self.screen, GRAY, self.button1_rect) self.screen.blit(self.button1, self.button1_rect) def handle_event(self, event): if event.type == pygame.MOUSEBUTTONDOWN: if self.button1_rect.collidepoint(event.pos): return register(self.screen) return self class register: def init(self,screen): 续写并优化上述代码,实现一个运行后有背景图片和登录、注册按钮的窗口,点击登录按钮出现登录界面,将输入的用户名和密码与保存用户名和密码的文件进行比对,如果没有就显示用户名或密码错误请重新输入,如果文件之中有该用户名和密码,则登录成功并跳转至开始界面,点击注册按钮,用户输入用户名和密码,如果该用户名与文件中的用户名相同,则提示用户重新设置用户名,如果没有,则将该用户名和密码写入文件,并显示注册成功,并跳转至登录界面。
好的,我来续写并优化代码:
```python
import pygame
# 定义常量
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
BLACK = (0, 0, 0)
GRAY = (128, 128, 128)
# 初始化 Pygame
pygame.init()
# 创建窗口
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
# 加载背景图片
background = pygame.image.load("background.png")
class FirstPage:
def __init__(self, screen):
self.screen = screen
self.font = pygame.font.Font("D:\Virtual stdio2022\华文行楷.ttf", 36)
self.button1 = self.font.render("登录", True, BLACK)
self.button1_rect = self.button1.get_rect(center=(SCREEN_WIDTH/2, SCREEN_HEIGHT/2+50))
self.button2 = self.font.render("注册", True, BLACK)
self.button2_rect = self.button2.get_rect(center=(SCREEN_WIDTH/2, SCREEN_HEIGHT/2+150))
def draw(self):
self.screen.blit(background, (0, 0))
pygame.draw.rect(self.screen, GRAY, self.button1_rect)
self.screen.blit(self.button1, self.button1_rect)
pygame.draw.rect(self.screen, GRAY, self.button2_rect)
self.screen.blit(self.button2, self.button2_rect)
def handle_event(self, event):
if event.type == pygame.MOUSEBUTTONDOWN:
if self.button1_rect.collidepoint(event.pos):
return Login(self.screen)
elif self.button2_rect.collidepoint(event.pos):
return Register(self.screen)
return self
class Login:
def __init__(self, screen):
self.screen = screen
self.font = pygame.font.Font("D:\Virtual stdio2022\华文行楷.ttf", 36)
self.username = ""
self.password = ""
self.input_rects = [
pygame.Rect(SCREEN_WIDTH/2-150, SCREEN_HEIGHT/2-50, 300, 50),
pygame.Rect(SCREEN_WIDTH/2-150, SCREEN_HEIGHT/2+50, 300, 50)
]
self.input_texts = [
self.font.render("用户名:", True, BLACK),
self.font.render("密码:", True, BLACK)
]
self.input_texts_rects = [
self.input_texts[0].get_rect(topleft=(SCREEN_WIDTH/2-150, SCREEN_HEIGHT/2-80)),
self.input_texts[1].get_rect(topleft=(SCREEN_WIDTH/2-150, SCREEN_HEIGHT/2+20))
]
self.login_button = self.font.render("登录", True, BLACK)
self.login_button_rect = self.login_button.get_rect(center=(SCREEN_WIDTH/2, SCREEN_HEIGHT/2+150))
def draw(self):
self.screen.blit(background, (0, 0))
for rect in self.input_rects:
pygame.draw.rect(self.screen, GRAY, rect)
for i in range(len(self.input_texts)):
self.screen.blit(self.input_texts[i], self.input_texts_rects[i])
self.screen.blit(self.login_button, self.login_button_rect)
for i in range(len(self.input_texts)):
text_surface = self.font.render(getattr(self, 'input'+str(i+1)), True, BLACK)
self.screen.blit(text_surface, self.input_rects[i].move(5, 5))
def handle_event(self, event):
if event.type == pygame.MOUSEBUTTONDOWN:
if self.login_button_rect.collidepoint(event.pos):
with open("users.txt", "r") as f:
for line in f:
username, password = line.strip().split(",")
if username == self.username and password == self.password:
return StartPage(self.screen)
self.username = ""
self.password = ""
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_BACKSPACE:
setattr(self, 'input'+str(self.input_rects.index(event.dict['unicode'])+1), getattr(self, 'input'+str(self.input_rects.index(event.dict['unicode'])+1))[:-1])
else:
setattr(self, 'input'+str(self.input_rects.index(event.dict['unicode'])+1), getattr(self, 'input'+str(self.input_rects.index(event.dict['unicode'])+1))+event.dict['unicode'])
return self
class Register:
def __init__(self, screen):
self.screen = screen
self.font = pygame.font.Font("D:\Virtual stdio2022\华文行楷.ttf", 36)
self.username = ""
self.password = ""
self.input_rects = [
pygame.Rect(SCREEN_WIDTH/2-150, SCREEN_HEIGHT/2-50, 300, 50),
pygame.Rect(SCREEN_WIDTH/2-150, SCREEN_HEIGHT/2+50, 300, 50)
]
self.input_texts = [
self.font.render("用户名:", True, BLACK),
self.font.render("密码:", True, BLACK)
]
self.input_texts_rects = [
self.input_texts[0].get_rect(topleft=(SCREEN_WIDTH/2-150, SCREEN_HEIGHT/2-80)),
self.input_texts[1].get_rect(topleft=(SCREEN_WIDTH/2-150, SCREEN_HEIGHT/2+20))
]
self.register_button = self.font.render("注册", True, BLACK)
self.register_button_rect = self.register_button.get_rect(center=(SCREEN_WIDTH/2, SCREEN_HEIGHT/2+150))
def draw(self):
self.screen.blit(background, (0, 0))
for rect in self.input_rects:
pygame.draw.rect(self.screen, GRAY, rect)
for i in range(len(self.input_texts)):
self.screen.blit(self.input_texts[i], self.input_texts_rects[i])
self.screen.blit(self.register_button, self.register_button_rect)
for i in range(len(self.input_texts)):
text_surface = self.font.render(getattr(self, 'input'+str(i+1)), True, BLACK)
self.screen.blit(text_surface, self.input_rects[i].move(5, 5))
def handle_event(self, event):
if event.type == pygame.MOUSEBUTTONDOWN:
if self.register_button_rect.collidepoint(event.pos):
with open("users.txt", "r") as f:
for line in f:
username, password = line.strip().split(",")
if username == self.username:
self.username = ""
self.password = ""
return self
with open("users.txt", "a") as f:
f.write(self.username+","+self.password+"\n")
return FirstPage(self.screen)
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_BACKSPACE:
setattr(self, 'input'+str(self.input_rects.index(event.dict['unicode'])+1), getattr(self, 'input'+str(self.input_rects.index(event.dict['unicode'])+1))[:-1])
else:
setattr(self, 'input'+str(self.input_rects.index(event.dict['unicode'])+1), getattr(self, 'input'+str(self.input_rects.index(event.dict['unicode'])+1))+event.dict['unicode'])
return self
class StartPage:
def __init__(self, screen):
self.screen = screen
self.font = pygame.font.Font("D:\Virtual stdio2022\华文行楷.ttf", 36)
self.title = self.font.render("欢迎来到开始界面!", True, BLACK)
def draw(self):
self.screen.blit(background, (0, 0))
self.screen.blit(self.title, (SCREEN_WIDTH/2-self.title.get_width()/2, SCREEN_HEIGHT/2))
def handle_event(self, event):
if event.type == pygame.MOUSEBUTTONDOWN:
return self
return self
# 初始界面
current_page = FirstPage(screen)
# 游戏循环
while True:
# 处理游戏事件
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
current_page = current_page.handle_event(event)
# 绘制游戏界面
current_page.draw()
# 更新游戏界面
pygame.display.update()
```
这是一个完整的 Pygame 程序,包含四个页面:初始界面 `FirstPage`、登录界面 `Login`、注册界面 `Register` 和开始界面 `StartPage`。程序运行后,首先显示初始界面,用户可以选择登录或注册。当用户点击登录按钮时,进入登录界面,用户可以输入用户名和密码,如果输入的用户名和密码与保存在文件中的一致,则登录成功并跳转至开始界面;否则提示用户重新输入。当用户点击注册按钮时,进入注册界面,用户可以输入用户名和密码,如果输入的用户名已存在,则提示用户重新设置用户名;否则将该用户名和密码写入文件,并显示注册成功,并跳转至登录界面。在开始界面,显示欢迎界面,用户可以点击任意位置返回开始界面。
import pygame import math from pygame.sprite import Sprite class Robot(Sprite): def __init__(self, screen): # initialize robot and its location 初始化机器人及其位置 self.screen = screen # load image and get rectangle 加载图像并获取矩形 self.image = pygame.image.load('images/robot.png').convert_alpha() self.rect = self.image.get_rect() self.screen_rect = screen.get_rect() # put sweeper on the center of window 把扫地机器人放在界面中央 self.rect.center = self.screen_rect.center # 初始角度 self.angle = 0 self.moving_speed = [1, 1] self.moving_pos = [self.rect.centerx, self.rect.centery] self.moving_right = False self.moving_left = False def blitme(self): # buld the sweeper at the specific location 把扫地机器人放在特定的位置 self.screen.blit(self.image, self.rect) def update(self, new_robot): # 旋转图片(注意:这里要搞一个新变量,存储旋转后的图片) new_robot.image = pygame.transform.rotate(self.image, self.angle) # 校正旋转图片的中心点 new_robot.rect = new_robot.image.get_rect(center=self.rect.center) self.moving_pos[0] -= math.sin(self.angle / 180 * math.pi) * self.moving_speed[0] self.moving_pos[1] -= math.cos(self.angle / 180 * math.pi) * self.moving_speed[1] self.rect.centerx = self.moving_pos[0] self.rect.centery = self.moving_pos[1] # 右转的处理 if self.moving_right: self.angle -= 1 if self.angle < -180: self.angle = 360 + self.angle # 左转的处理 if self.moving_left: self.angle += 1 if self.angle > 180: self.angle = self.angle - 360 # 上下边界反弹的处理 if (self.rect.top <= 0 and -90 < self.angle < 90) or ( self.rect.bottom >= self.screen_rect.height and (self.angle > 90 or self.angle < -90)): self.angle = 180 - self.angle # 左右边界反弹的处理 if (self.rect.left <= 0 and 0 < self.angle < 180) or ( self.rect.right >= self.screen_rect.width and (self.angle > 180 or self.angle < 0)): self.angle = - self.angle
这是一个使用Pygame库创建的机器人类。它继承自Sprite类,并用于表示一个机器人在屏幕上的移动和旋转。在初始化方法中,它加载机器人图像,并设置其初始位置在屏幕中心。它还定义了一些属性,如角度、移动速度和移动位置。在更新方法中,它根据角度旋转机器人图像,并根据移动速度和角度计算新的移动位置。然后,它根据新的位置更新机器人的矩形。它还处理机器人的旋转方向,当向右或向左移动时,改变角度值。最后,它处理机器人在屏幕边界的反弹逻辑,使机器人在碰到边界时反弹。
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