Pygame 暂停键

Question

我正在 pygame 中为 android 制作游戏，这是我的代码：

import pygame, sys
from pygame.locals import * 

try:
    import Android
except ImportError:
    Android = None

pygame.init()

if Android:
    android.init()
    android.map_key(android.KEYCODE_BACK, pygame.K_ESCAPE)

size = width, height = 1276,650
screen = pygame.display.set_mode(size)

r = 0
bif = pygame.image.load("map.png") 
pygame.display.set_caption("Pygame 2D RPG !")
x,y=0,0
movex, movey=0,0
character="boy.png"
player=pygame.image.load(character).convert_alpha()

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        if event.type==KEYDOWN:
            if event.key==K_a:
                movex=-1
            elif event.key==K_d:
                movex=+1
            elif event.key==K_w:
                movey=-1
            elif event.key==K_s:
                movey=+1
        if event.type==KEYUP:
            if event.key==K_a:
                movex=0
            elif event.key==K_d:
                movex=0
            elif event.key==K_w:
                movey=0
            elif event.key==K_s:
                movey=0
            elif event.type == KEYDOWN:
                if event.key == K_ESCAPE:
                    pygame.quit()
                    sys.exit()
    x+=movex
    y+=movey
    screen.fill((r,0,0))
    screen.blit(bif,(0,0))
    screen.blit(player,(x,y)) 

    pygame.display.update() 

1. 谁能给我一个链接到我可以学习 pygame 的资源。

2. 在我的游戏中说，当我按“q”时它会暂停游戏，当我再次按它时它会解冻任何人都可以给我一个关于如何执行此操作的建议。我现在这有点含糊，但意思是每当按下“q”键时，它会阻止角色移动并且一切都停止。

Answer 1

免费电子书 (PDF)

• Making Games with Python & Pygame
• Invent Your Own Computer Games with Python - 没有 pygame - 与上述相同的作者

暂停或多或少像这样：

self.PAUSED = False

while True:
    for event in pygame.event.get():
        if event.type==KEYDOWN:
            if event.key==K_q:
                self.PAUSED = not self.PAUSED


    if not self.PAUSED:

        x+=movex
        y+=movey
        screen.fill((r,0,0))
        screen.blit(bif,(0,0))
        screen.blit(player,(x,y)) 

        pygame.display.update() 

编辑：

你在类中没有代码，所以你必须使用 PAUSED 而不使用 self.

具有暂停屏幕和键盘以及文本“PAUSED”的工作代码

import pygame, sys
from pygame.locals import * 

try:
    import Android
except ImportError:
    Android = None

pygame.init()

if Android:
    android.init()
    android.map_key(android.KEYCODE_BACK, pygame.K_ESCAPE)

size = width, height = 1276,650
screen = pygame.display.set_mode(size)

r = 0
bif = pygame.image.load("map.png") 
pygame.display.set_caption("Pygame 2D RPG !")
x,y=0,0
movex, movey=0,0
character="boy.png"
player=pygame.image.load(character).convert_alpha()

PAUSED = False
font = pygame.font.SysFont("serif", 72)
text_paused = font.render("PAUSED", True, (255, 0, 0))

while True:

    # --- events ---

    for event in pygame.event.get():

        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

        if event.type==KEYDOWN:
            if event.key == K_ESCAPE:
                pygame.quit()
                sys.exit()
            elif event.key==K_q:
                PAUSED = not PAUSED

        if not PAUSED:
            if event.type==KEYDOWN:
                if event.key==K_a:
                    movex=-1
                elif event.key==K_d:
                    movex=+1
                elif event.key==K_w:
                    movey=-1
                elif event.key==K_s:
                    movey=+1
            if event.type==KEYUP:
                if event.key==K_a:
                    movex=0
                elif event.key==K_d:
                    movex=0
                elif event.key==K_w:
                    movey=0
                elif event.key==K_s:
                    movey=0

    # --- changing values ---

    if not PAUSED:
        x+=movex
        y+=movey

    # --- drawing ---

    screen.fill((r,0,0))
    screen.blit(bif,(0,0))
    screen.blit(player,(x,y)) 

    if PAUSED:
        screen.blit(text_paused, (100, 100))

    pygame.display.update() 

编辑：

带有类的版本（或多或少）

import pygame, sys
from pygame.locals import * 

try:
    import Android
except ImportError:
    Android = None


#----------------------------------------------------------------------

class Background():

    def __init__(self, screen):

        self.screen = screen

        self.x = 0
        self.y = 0

        self.r = 0

        filename = "maps.png" # "start_screen.jpg" #

        self.image = pygame.image.load(filename).convert_alpha()

    def draw(self):
        self.screen.fill((self.r,0,0))
        self.screen.blit(self.image, (self.x, self.y))


#----------------------------------------------------------------------

class Player():

    def __init__(self, screen):

        self.screen = screen

        self.x = 0
        self.y = 0
        self.movex = 0
        self.movey = 0

        filename = "boy.png" # "jar.png" # 

        self.image = pygame.image.load(filename).convert_alpha()

    def move(self):
        self.x += self.movex
        self.y += self.movey        

    def draw(self):
        self.screen.blit(self.image, (self.x, self.y))

    def events(self, event):

        if event.type == KEYDOWN:
            if event.key == K_a:
                self.movex = -1
            elif event.key == K_d:
                self.movex = +1
            elif event.key == K_w:
                self.movey = -1
            elif event.key == K_s:
                self.movey = +1

        if event.type==KEYUP:
            if event.key == K_a:
                self.movex = 0
            elif event.key == K_d:
                self.movex = 0
            elif event.key == K_w:
                self.movey = 0
            elif event.key == K_s:
                self.movey = 0

#----------------------------------------------------------------------

class Game():

    def __init__(self):

        pygame.init()

        if Android:
            android.init()
            android.map_key(android.KEYCODE_BACK, pygame.K_ESCAPE)

        self.size = self.width, self.height = 1276, 650
        self.screen = pygame.display.set_mode(self.size)

        pygame.display.set_caption("Pygame 2D RPG !")

        self.background = Background(self.screen)
        self.player = Player(self.screen)

        font = pygame.font.SysFont("serif", 72)
        self.text_paused = font.render("PAUSED", True, (255, 0, 0))

    def run(self):

        PAUSED = False

        RUNNING = True

        while RUNNING:

            # --- events ---

            for event in pygame.event.get():

                if event.type == pygame.QUIT:
                    RUNNING = False

                if event.type==KEYDOWN:
                    if event.key == K_ESCAPE:
                        RUNNING = False
                    elif event.key==K_q:
                        PAUSED = not PAUSED

                if not PAUSED:
                    self.player.events(event)

            # --- changing values ---

            if not PAUSED:
                self.player.move()

            # --- drawing ---

            self.background.draw()
            self.player.draw()

            if PAUSED:
                self.screen.blit(self.text_paused, (100, 100))

            pygame.display.update() 

        pygame.quit()
        sys.exit()

#----------------------------------------------------------------------

if __name__ == '__main__':
    Game().run()

Answer 2

http://www.pygame.org/wiki/tutorials 看起来是一些教程的好地方。我不确定您寻找的高级程度，所以它们可能有点基本。乍一看，这看起来不错：http://programarcadegames.com/index.php?chapter=bitmapped_graphics_and_sound&lang=en#section_12

这可能是一种非常笨拙的方法，但您可以创建一个无限循环，直到您再次按下 q 键为止：

if <q key pressed>:
    while 1:
        sleep(1)
        if <q key pressed>:
             break

是一个相当简化的版本。

Answer 3

默认的Punch the chimp tutorial 是一个很好的起点。具体来说，你应该看看他们使用 pygame.time.Clock.tick 来限制帧率。

一旦你有了一个游戏循环，最简单的暂停方法是使用“event.wait()”，它会停止并等待事件发生。您只需使用它等待直到按下取消暂停，然后继续事件循环。