我的游戏出现问题，当我尝试从屏幕上的游戏重新启动游戏时，它会将机器人（玩家）放回到其起始位置，但滚动屏幕仍处于相同位置
是否有一种简单的方法可以重置屏幕位置，还是需要重绘所有原始平台。
以下是正在使用的代码的主要部分。我没有包含重新启动游戏的代码，但它只是运行game_loop（）
感谢您的帮助
import pygame as pg
import time
import random
pg.init()#initiates pygame
display_height = 690#Creates width and height of screen
display_width = 1024
#Colours
white = (255,255,255)
black = (0,0,0)
red = (255,0,0)
green = (0,255,0)
blue = (0,0,255)
grass = (24,85,36)
yellow = (255,255,0)
lightGrey = (184,184,184)
grey = (73,71,65)
Robot_height = 99#Height of robot
Robot_width = 112#Width of robot
Bullet_Fired = False
PowerUp_Active = False
Robot_acc = 0.3 #Robot Acceleration
vec = pg.math.Vector2
gameDisplay = pg.display.set_mode((display_width,display_height)) #Sets display properties of window
pg.display.set_caption ("Game") #Title on window
clock = pg.time.Clock()
#Class for platforms
class Platform(pg.sprite.Sprite):
def __init__(self, x,y,w,h):
pg.sprite.Sprite.__init__(self)
self.image = pg.Surface((w,h))#sets width and height of platform
self.image.fill(grass)#Fills rectangle with blue
self.rect = self.image.get_rect()#Rectangle set
self.rect.x = x#x position
self.rect.y = y#y position
#List of platforms x , y , width , height
PLATFORM_LIST = [[0,display_height - 40,2000,40],
[2300,display_height - 40,1000,40],
]
#Platform group
platforms = pg.sprite.Group()
#Checks through "PLATFORM_LIST" and adds all the platforms the the grounp "platforms"
for plat in PLATFORM_LIST:
p = Platform(*plat)
platforms.add(p)
#Draws platforms to the screen
def draw():
for plat in platforms:
pg.draw.rect(gameDisplay, grass, plat)
#Class for robot
class RobotClass(pg.sprite.Sprite):
def __init__(self):
pg.sprite.Sprite.__init__(self)
self.image = pg.Surface((Robot_width,Robot_height))#Height and width of the robot
self.rect = self.image.get_rect()#Gets rectangle of robot
self.rect.center = (display_width / 2, display_height / 2)#Location of center of robot
self.RobotPos = vec(display_width / 2, display_height / 2)#Position of robot as vector
self.bottom = (0,0)#Bottom of robot
self.vel = vec(0, 0)#Robots velocity
self.acc = vec(0, 0.3)#Robots Acceleration
startX = display_width/2
startY = display_height/2
#Creates Robot
Robot = RobotClass()
#Jump function
def jump():
#Checks pixel below robot to see if there is a collision
Robot.rect.x = Robot.rect.x +1
hits = pg.sprite.spritecollide(Robot , platforms, False)
Robot.rect.x = Robot.rect.x -1
if hits:
#Gives robot velocity of 5 upwards
Robot.vel.y = -10
def game_loop():
global PLATFORM_LIST
global startX
global startY
global backgroundImg
Robot.RobotPos = (startX,startY)
score = 0 #Score
lives = 3 #Robot Lives
Robot_friction = -0.3 #Friction value
vec = pg.math.Vector2 #Setting vec as vector quantity
while True:
for event in pg.event.get():
if event.type == pg.QUIT:
pg.quit
quit()
#Starts acceleration when key is pressed
if event.type == pg.KEYDOWN:
if event.key == pg.K_LEFT:
Robot.acc.x = -Robot_acc
elif event.key == pg.K_RIGHT:
Robot.acc.x = Robot_acc
elif event.key == pg.K_UP:
jump()
#Adds friction to accleration to slow robot down when key is not being pressed
if event.type == pg.KEYUP:
if event.key == pg.K_LEFT or event.key == pg.K_RIGHT:
Robot.acc.x = Robot.acc.x * Robot_friction
#Adjusts velocity of robot by adding the acceleration on each cycle
Robot.vel = Robot.vel+ Robot.acc
#gameDisplay.fill(sky)
gameDisplay.blit(backgroundImg,(0,0))
#Changes Robot position according to its velocity,acceleration and the friction
Robot.RobotPos = Robot.RobotPos + Robot.vel + 0.5 * Robot.acc
#Loads robot onto screen
gameDisplay.blit(robotImg,(Robot.rect))
#pg.draw.rect(gameDisplay, red, Robot.rect, 2
display_lives(lives)
display_score(score)#lives
#Sets bottom of robot to its position
Robot.rect.midbottom = Robot.RobotPos
#Collision detection
if Robot.vel.y > 0:
hits = pg.sprite.spritecollide(Robot , platforms, False)
if hits:
#Puts Robot on top of platform
Robot.RobotPos.y = hits[0].rect.top + 1
Robot.vel.y = 0
#Scrolling
if Robot.rect.left < display_width/4:
Robot.RobotPos.x = Robot.RobotPos.x + abs(Robot.vel.x)
startX = startX + abs(Robot.vel.x)
for plat in platforms:
plat.rect.x = plat.rect.x + int(abs(Robot.vel.x))
if Robot.rect.right > (display_width-display_width/4):
Robot.RobotPos.x = Robot.RobotPos.x - abs(Robot.vel.x)
startX = startX - abs(Robot.vel.x)
for plat in platforms:
plat.rect.x = plat.rect.x - int(abs(Robot.vel.x))
draw()
#Losing a life
if Robot.rect.top > display_height:
lives = lives - 1
Robot.RobotPos.y = Robot.RobotPos.y - (40+Robot_height)
Robot.RobotPos.x = Robot.RobotPos.x - 200
Robot.vel.x = 0
#Sets top velocity of robot
if Robot.vel.x > 6:
Robot.vel.x = 6
if Robot.vel.x < -6:
Robot.vel.x = -6
#Makes robot velocity = 0 when it is close to 0
if Robot.vel.x < 0.05 and Robot.vel.x > -0.05:
Robot.acc.x = 0
Robot.vel.x = 0
#Draws the platforms to the screen and adds them to platform group
pg.display.update()#Updates display
clock.tick(60)
game_intro()
pg.quit()
quit()
答案 0 :(得分：1)
您只需重置在游戏过程中更改的主函数（和全局变量）中的所有值以重新启动它。我有一个通用的例子，我只调用initialize函数创建一个新的精灵组和一个玩家精灵（用d键移动玩家rect并用r键重置游戏）再次调用initialize。
import sys
import pygame as pg
class Player(pg.sprite.Sprite):
def __init__(self, pos, *groups):
super().__init__(groups)
self.image = pg.Surface((40, 70))
self.image.fill(pg.Color('royalblue'))
self.rect = self.image.get_rect(center=pos)
self.vel = pg.math.Vector2(0, 0)
self.pos = pg.math.Vector2(pos)
def update(self):
self.pos += self.vel
self.rect.center = self.pos
def initialize():
sprite_group = pg.sprite.Group()
player = Player((100, 300), sprite_group)
return sprite_group, player
def main():
screen = pg.display.set_mode((640, 480))
clock = pg.time.Clock()
sprite_group, player = initialize()
done = False
while not done:
for event in pg.event.get():
if event.type == pg.QUIT:
done = True
if event.type == pg.KEYDOWN:
if event.key == pg.K_d:
player.vel.x = 5
if event.key == pg.K_r:
sprite_group, player = initialize()
if event.type == pg.KEYUP:
if event.key == pg.K_d:
player.vel.x = 0
sprite_group.update()
screen.fill(pg.Color('gray12'))
sprite_group.draw(screen)
pg.display.flip()
clock.tick(30)
if __name__ == '__main__':
pg.init()
main()
pg.quit()
sys.exit()