我正在制作一款侵略太空的游戏，并且我有一个名为bulletboost的功能，可以在其中加载图像并将其粘贴到屏幕上任意x和y点处。
def bulletboost():
fastbullets.append((randint(50 ,800)))
fastbullets.append((randint(0,100)))
bul=image.load("image/bullet.png").convert()
gameDisplay.blit(bul,(fastbullets[0],fastbullets[1]))
这是游戏的全部代码（很长）：
import sys
from pygame import *
from math import *
from random import *
import random
import math
init()
display_width = 1000
display_height = 700
shipx = 350
shipy = 550
current_level=0
spawner=0
asteroids=[]
astroidX=randint(0,800)
astroidY=randint(50,500)
astroidY_change=0
counter=0
alien=[]
aliencounter=0
enemy_y =0
enemy_x=0
fastbullets=[]
gameover=False
alienbullets=[]
w=[0,3]
gameDisplay = display.set_mode((display_width,display_height))
screen=display.set_mode((1000,700))
white = (255,255,255)
black = (0,0,0)
red = (200,0,0)
light_red = (255,0,0)
yellow = (200,200,0)
light_yellow = (255,255,0)
green = (34,177,76)
light_green = (0,255,0)
blue = (0,0,255)
clock = time.Clock()
explosion_sound = mixer.Sound('./sounds/boom.wav')
bullet_sound = mixer.Sound('./sounds/shot1.wav')
bg_sound = mixer.Sound('./sounds/bgmusic1.ogg')
smallfont = font.SysFont("comicsansms", 25)
medfont = font.SysFont("comicsansms", 50)
largefont = font.SysFont("comicsansms", 85)
xlargefont = font.SysFont("Girassol", 100)
textx = 8
texty = 40
bg_imgs = ['./image/bg_big.png',
'./image/seamless_space.png',
'./image/space3.jpg']
bg_move_dis = 0
bg_1 = image.load(bg_imgs[0]).convert()
bg_2 = image.load(bg_imgs[1]).convert()
bg_3 = image.load(bg_imgs[2]).convert()
Score_1 = 200
Score_2 = 200
if (Score_1 + Score_2) < 500:
background = bg_1
elif (Score_1 + Score_2) < 1500:
background = bg_2
else:
background = bg_3
v=[0,-5]#horiz and vertical speed of the bullet
#print(ets)
bullets=[]#empty list for bullets
astroid=image.load("image/meteorBrown_med1.png").convert_alpha()
alienspaceship=image.load("image/ufo.png").convert_alpha()
def show_score(x,y):
score = smallfont.render("Score : " + str(score_value), True, light_yellow)
screen.blit(score,(x,y))
def show_lives(x,y):
lives = smallfont.render("Lives : " + str(livesr), True, green)
screen.blit(lives,(x,y))
def show_level(x,y):
level = smallfont.render("Level : " + str(current_level), True, blue)
screen.blit(level,(x,y))
def text_objects(text, color,size = "small"):
if size == "small":
textSurface = smallfont.render(text, True, color)
if size == "medium":
textSurface = medfont.render(text, True, color)
if size == "large":
textSurface = largefont.render(text, True, color)
if size == "xlarge":
textSurface = xlargefont.render(text, True, color)
return textSurface, textSurface.get_rect()
def text_to_button(msg, color, buttonx, buttony, buttonwidth, buttonheight, size = "small"):
textSurf, textRect = text_objects(msg,color,size)
textRect.center = ((buttonx+(buttonwidth/2)), buttony+(buttonheight/2))
gameDisplay.blit(textSurf, textRect)
def message_to_screen(msg,color, y_displace = 0, size = "small"):
textSurf, textRect = text_objects(msg,color,size)
textRect.center = (int(display_width / 2), int(display_height / 2)+y_displace)
gameDisplay.blit(textSurf, textRect)
def button(text, x, y, width, height, inactive_color, active_color, action = None):
cur = mouse.get_pos()
click = mouse.get_pressed()
#print(click)
if x + width > cur[0] > x and y + height > cur[1] > y:
draw.rect(gameDisplay, active_color, (x,y,width,height))
if click[0] == 1 and action != None:
if action == "Quit":
quit()
if action == "Play":
play()
if action == "Controls":
control_menu()
if action == "Back":
game_intro()
if action =="Start":
gameLoop()
else:
draw.rect(gameDisplay, inactive_color, (x,y,width,height))
text_to_button(text,black,x,y,width,height)
def game_intro():
menu_1 = image.load('./image/menubackground.jpg')
gameDisplay.blit(menu_1,(0,0))
intro = True
while intro:
for evt in event.get():
#print(event)
if evt.type == QUIT:
quit()
if evt.type == KEYDOWN:
if evt.key == K_c:
intro = False
elif evt.key == K_q:
quit()
message_to_screen("Space Heroes!",green,-210,size="xlarge")
message_to_screen("The objective is to shoot and destroy",white,-30)
message_to_screen("the enemy ships before they destroy you.",white,10)
message_to_screen("Defeat all of them to advance to next level!.",white,50)
message_to_screen("By Wafi Hassan",blue, 110)
button("Play", 230,500,100,50, green, light_green, action="Play")
button("Controls", 430,500,100,50, yellow, light_yellow, action="Controls")
button("Quit", 630,500,100,50, red, light_red, action ="Quit")
display.update()
clock.tick(15)
def control_menu():
menu_1 = image.load('./image/menubackground.jpg')
gameDisplay.blit(menu_1,(0,0))
intro = True
while intro:
for evt in event.get():
#print(event)
if evt.type == QUIT:
quit()
if evt.type == KEYDOWN:
if evt.key == K_c:
intro = False
elif evt.key == K_q:
quit()
message_to_screen("Controls",blue,-210,size="large")
message_to_screen("SPACE - SHOOT",white,-30)
message_to_screen("A-D - Left and Right movement",white,10)
button("Back", 550,500,100,50, red, light_red, action ="Back")
display.update()
clock.tick(15)
def game_over():
global alien
global alienbullets
global livesr
global score_value
global shipx
global shipy
global current_level
global aliencounter
global asteroids
global bullets
bullets=[]
asteroids=[]
aliencounter=0
alien=[]
alienbullets=[]
livesr=1
score_value=0
shipx=350
shipy=550
current_level=1
bg_sound.stop()
menu_1 = image.load('./image/gameover.jpg').convert_alpha()
gameDisplay.blit(menu_1,(0,0))
gameover = True
while gameover:
for evt in event.get():
if evt.type == QUIT:
gameover=False
quit()
button("QUIT", 550,500,100,50, red, light_red, action ="Quit")
button("RESTART", 310,500,115,50, red, light_red, action ="Start")
display.update()
clock.tick(15)
def play():
display_width = 1000
display_height = 700
screen=display.set_mode((display_width,display_height))
running=True
y=0
while running:
for evt in event.get():
#print(event)
if evt.type == QUIT:
quit()
if evt.type == KEYDOWN:
if evt.key == K_e:
gameLoop()
rel_y = y % bg_3.get_rect().width
screen.blit(bg_3,(0,rel_y - bg_3.get_rect().width))
if rel_y < 600:
screen.blit(bg_3,(0,rel_y))
y +=1
message_to_screen("Attention, Fighter! ",blue,-300,size="medium")
message_to_screen("You have been summoned by our government to protect our planet Kiblar.",white,-210)
message_to_screen("We are being attacked by incoming enemies from the planet Noxus.",white,-170)
message_to_screen("You are our only defender left, protect us at all costs!",white,-130)
message_to_screen("Intelligence reports that there are 2 waves of enemies.",white,-90)
message_to_screen("After you eliminate them all, they will send their mothership Dengrau.",white,-50)
message_to_screen("Killing Dengrau will save our existence on galaxy 1029 from the rival planet Noxus.",white,-10)
message_to_screen("ARE YOU READY TO TAKE THIS CHALLENGE?!",white,130)
message_to_screen("CLICK [E] TO START!",red,190)
display.update()
myclock.tick(120)
quit()
def enemy_generate():
for i in range(5):
asteroids.append((randint(50 ,800),randint(0,100)))
def drawScene(screen,sx,sy,bull,alienbull,alien,asteroids):
lee=image.load("image/laserRed16.png").convert_alpha()
bt=image.load("image/missile.png").convert_alpha()
## astrow=image.load("image/meteorBrown_med1.png").convert_alpha
spaceship=image.load("image/ship.png").convert_alpha()
screen.blit(spaceship,[sx,sy])
for b in bull:
screen.blit(bt,(b[0],b[1]))#drawing the bullets
for en in alien:
screen.blit(alienspaceship,(en[0],en[1]))
for a in asteroids:
astroid=image.load("image/meteorBrown_med1.png").convert_alpha()
screen.blit(astroid,(a[0],(a[1]+astroidY_change))) ######################## change
for eb in alienbull:
screen.blit(lee,(eb[0],eb[1]))#drawing the bullets
display.update()
score_value=0
lives=3
def checkHits(bull,targ,astero,crate):
global score_value
global rapidbullet
for b in bull:# go through each bullet
for a in astero:
aliendistance = math.sqrt((math.pow(b[0]-a[0],2)) + (math.pow(b[1]-a[1],2)))
if aliendistance < 40:
asteroids.remove(a)
bull.remove(b)
explosion_sound.play()
score_value+=1
break
for t in targ: #go through each target
distance = math.sqrt((math.pow(b[0]-t[0],2)) + (math.pow(b[1]-t[1],2)))
if distance < 60:
targ.remove(t)#removes the target
bull.remove(b)#removes the bullet
explosion_sound.play()
score_value += 1
if score_value==10:
level_2()
elif score_value==30:
level_3()
elif score_value==60:
gamefinish()
break
for c in crate:
boxdistance=math.sqrt((math.pow(b[0]-fastbullets[1],2)) + (math.pow(b[1]-fastbullets[0],2)))
if boxdistance<30:
crate.remove(c)
bull.remove(b)
explosion_sound.play()
rapidbullet=20
break
livesr=1
def checkalienbullets(alienbull):
global livesr
global score_value
for a in alienbull:
alienbdistance=math.sqrt((math.pow(a[0]-shipx,2)) + (math.pow(a[1]-shipy,2)))
if alienbdistance<40:
livesr-=1
print(livesr)
if livesr==0:
game_over()
def bulletboost():
fastbullets.append((randint(50 ,800)))
fastbullets.append((randint(0,100)))
bul=image.load("image/bullet.png").convert()
gameDisplay.blit(bul,(fastbullets[0],fastbullets[1]))
def moveBullets(bull):
for b in bull:
b[0]+=b[2]
b[1]+=b[3]
if b[1]>700:#off-screen
bull.remove(b)
def move_alien_bull(ebull):
for e in ebull:
e[0]+=e[2]
e[1]+=e[3]
if e[1]>700:#off-screen
ebull.remove(e)
def level_2():
global asteroids
global alien
global aliencounter
global alienbullets
global shipx
global shipy
global current_level
global livesr
global score_value
global enemy_y
global astroidY
global astroidY_change
global bullets
bullets=[]
asteriodY_change=0
alien=[]
aliencounter=0
rapidbullet=40
y=0
alienbullets=[]
shipx=350
shipy=550
ship_x =0
ship_y=0
current_level+=1
livesr+=1
direction= None
running=True
function=True
while running:
astroidY_change += .5
#enemy_y += 0
#global alienbullets
for evt in event.get():
if evt.type==QUIT:
running=False
quit()
if evt.type==KEYDOWN:
if evt.key == K_LEFT:
ship_x = -2.5
if evt.key == K_RIGHT:
ship_x = 2.5
## if evt.key == K_UP:
## ship_y = -2
## if evt.key == K_DOWN:
## ship_y = 2
if evt.type==KEYUP:
if evt.key == K_LEFT or evt.key == K_RIGHT:
ship_x = 0
## ship_y = 0
shipx += ship_x
## shipy += ship_y
if shipx <= 0:
shipx = 0
elif shipx >= 900:
shipx = 900
## if shipy <= 0:
## shipy = 0
## elif shipy >= 650:
## shipy = 650
# astroid Movement
astroidY += astroidY_change
if astroidY_change >=650:
astroidY_change =0
if rapidbullet<40:
rapidbullet+=1
keys=key.get_pressed()
if keys[32] and rapidbullet==40:#32 is the space key
bullet_sound.play()
bullets.append([shipx,shipy,v[0],v[1]])
rapidbullet=0
if random.randrange(0,6*20) == 1 and score_value<=30:
aliencounter+=1
x= randint(50,700)
y= randint(0,100)
alien.append([x,y])
alienbullets.append([x,y,w[0],w[1]])
rel_y = y % bg_3.get_rect().width
screen.blit(bg_3,(0,rel_y - bg_3.get_rect().width))
if rel_y < 700:
screen.blit(bg_3,(0,rel_y))
y +=1
if enemy_y >= 600:
enemy_y = 0
show_score(textx,texty)
show_lives(10,70)
show_level(10,10)
moveBullets(bullets)
move_alien_bull(alienbullets)
checkHits(bullets,alien,asteroids,fastbullets)
checkalienbullets(alienbullets)
drawScene(screen,shipx,shipy,bullets,alienbullets,alien,asteroids)
display.update()
myclock.tick(120)
quit()
def level_3():
enemy_generate()
global alien
global aliencounter
global alienbullets
global shipx
global shipy
global current_level
global livesr
global score_value
global enemy_y
global astroidY
global astroidY_change
global bullets
bullets=[]
asteriodY_change=0
alien=[]
aliencounter=0
rapidbullet=40
alienbullets=[]
y=0
shipx=350
shipy=550
ship_x =0
ship_y=0
current_level+=1
livesr+=1
direction= None
running=True
function=True
while running:
astroidY_change += .5
#global alienbullets
for evt in event.get():
if evt.type==QUIT:
running=False
quit()
if evt.type==KEYDOWN:
if evt.key == K_LEFT:
ship_x = -2.5
if evt.key == K_RIGHT:
ship_x = 2.5
## if evt.key == K_UP:
## ship_y = -2
## if evt.key == K_DOWN:
## ship_y = 2
if evt.type==KEYUP:
if evt.key == K_LEFT or evt.key == K_RIGHT:
ship_x = 0
## ship_y = 0
shipx += ship_x
## shipy += ship_y
if shipx <= 0:
shipx = 0
elif shipx >= 900:
shipx = 900
## if shipy <= 0:
## shipy = 0
## elif shipy >= 650:
## shipy = 650
# astroid Movement
astroidY += astroidY_change
if astroidY_change >=650:
astroidY_change =0
if rapidbullet<40:
rapidbullet+=1
keys=key.get_pressed()
if keys[32] and rapidbullet==40:#32 is the space key
bullet_sound.play()
bullets.append([shipx,shipy,v[0],v[1]])
rapidbullet=0
if random.randrange(0,6*15) == 1 and score_value<=60:
aliencounter+=1
x= randint(50,700)
y= randint(0,100)
alien.append([x,y])
alienbullets.append([x,y,w[0],w[1]])
rel_y = y % bg_3.get_rect().width
screen.blit(bg_3,(0,rel_y - bg_3.get_rect().width))
if rel_y < 700:
screen.blit(bg_3,(0,rel_y))
y +=1
if enemy_y >= 600:
enemy_y = 0
show_score(textx,texty)
show_lives(10,70)
show_level(10,10)
moveBullets(bullets)
move_alien_bull(alienbullets)
checkHits(bullets,alien,asteroids,fastbullets)
checkalienbullets(alienbullets)
drawScene(screen,shipx,shipy,bullets,alienbullets,alien,asteroids)
display.update()
myclock.tick(120)
quit()
def gamefinish():
global alien
global alienbullets
global livesr
global score_value
global shipx
global shipy
global current_level
global aliencounter
global asteroids
global bullets
bullets=[]
asteroids=[]
aliencounter=0
alien=[]
alienbullets=[]
livesr=1
score_value=0
shipx=350
shipy=550
current_level=1
bg_sound.stop()
gameDisplay = display.set_mode((1000,700))
bg_sound.stop()
over = image.load('./image/gamewon.jpg').convert_alpha()
gameDisplay.blit(over,(0,0))
gamewin = True
while gamewin:
for evt in event.get():
if evt.type == QUIT:
gamewin=False
quit()
button("QUIT", 550,500,100,50, red, light_red, action ="Quit")
button("MENU", 310,500,100,50, red, light_red, action ="Back")
## texting=medfont.render("Your score:",show_score, True,(0,0,0))
## gameDisplay.blit(texting,(0,0))
display.update()
clock.tick(15)
print("Your score:", score_value)
print("Level:", current_level)
print("Lives Left:", livesr)
myclock=time.Clock()
##y=0
##enemy_generate()
def gameLoop():
gameover=False
livesr=1
bg_sound.play(-1)
rapidbullet=40
y=0
score=0
ship_x =0
ship_y=0
global shipx
global shipy
global aliencounter
global astroidY
global astroidY_change
global enemy_y
global alien
global current_level
global counter
global bullets
global spawner
spawner=1
## global livesr
current_level=1
direction= None
running=True
spawning=True
bulletboost()
while running:
astroidY_change += .5
#enemy_y += 0
#global alienbullets
for evt in event.get():
if evt.type==QUIT:
running=False
quit()
if evt.type==KEYDOWN:
if evt.key == K_LEFT:
ship_x = -2.5
if evt.key == K_RIGHT:
ship_x = 2.5
## if evt.key == K_UP:
## ship_y = -2
## if evt.key == K_DOWN:
## ship_y = 2
if evt.type==KEYUP:
if evt.key == K_LEFT or evt.key == K_RIGHT:
ship_x = 0
## ship_y = 0
shipx += ship_x
## shipy += ship_y
if shipx <= 0:
shipx = 0
elif shipx >= 900:
shipx = 900
## if shipy <= 0:
## shipy = 0
## elif shipy >= 650:
## shipy = 650
# astroid Movement
astroidY += astroidY_change
if astroidY_change >=650:
astroidY_change =0
if rapidbullet<40:
rapidbullet+=1
keys=key.get_pressed()
if keys[32] and rapidbullet==40:#32 is the space key
bullet_sound.play()
bullets.append([shipx,shipy,v[0],v[1]])
rapidbullet=0
if random.randrange(0,6*30) == 1 and score_value<=10:
aliencounter+=1
x= randint(50,700)
y= randint(0,100)
alien.append([x,y])
alienbullets.append([x,y,w[0],w[1]])
## if random.randrange(0,6*40) == 1:
## aliencounter+=1
## x= randint(50,700)
## y= randint(0,100)
## alien.append([x,y])
## alienbullets.append([x,y,w[0],w[1]])
## if aliencounter==10:
## function=False
rel_y = y % bg_3.get_rect().width
screen.blit(bg_3,(0,rel_y - bg_3.get_rect().width))
if rel_y < 700:
screen.blit(bg_3,(0,rel_y))
y +=1
if enemy_y >= 600:
enemy_y = 0
for i in range(1):
bulletboost()
show_score(textx,texty)
show_lives(10,70)
show_level(10,10)
moveBullets(bullets)
move_alien_bull(alienbullets)
checkHits(bullets,alien,asteroids,fastbullets)
checkalienbullets(alienbullets)
drawScene(screen,shipx,shipy,bullets,alienbullets,alien,asteroids)
display.update()
myclock.tick(120)
spawner+=1
quit()
game_intro()
问题是，当我运行游戏时，游戏开始时是平稳的，然后开始减速并变得如此缓慢，以至于一切都变成慢动作。任何帮助，将不胜感激。
您的快速项目列表越来越长。也许您的意思是：
def bulletboost():
fasrbullets = [randint(50 ,800), (randint(0,100))]
bul=image.load("image/bullet.png").convert()
gameDisplay.blit(bul,(fastbullets[0],fastbullets[1]))
当我重新创建太空侵略者游戏时，我遇到了同样的问题。尝试改用convert_alpha（）。
bul = image.load("image/bullet.png").convert_alpha()
https://www.pygame.org/docs/ref/surface.html#pygame.Surface.convert_alpha
问题是，图像“ image / bullet.png”已加载到每一帧中。加载图像是非常耗时的操作。在程序开始时（在display.set_mode之后的某个位置）加载一次图像：
gameDisplay = display.set_mode((display_width,display_height))
# [...]
bullet_image = image.load("image/bullet.png").convert_alpha()
并在blit项目符号时使用图像。但是请注意，子弹在生成时不必绘制。您必须在主应用程序循环中绘制项目符号。因此，您需要一个附加项目符号的函数和另一个绘制项目符号的函数：
def spawnbullet():
global fastbullets
x = randint(50 ,800))
y = randint(0,100))
fastbullets.append((x, y))
def bulletboost():
for pos in fastbullets:
gameDisplay.blit(bullet_image, pos)
def gameLoop():
# [...]
spawnbullet()
while running:
# [...]
if enemy_y >= 600:
enemy_y = 0
bulletboost()