Dec-31-2019, 03:54 PM
Hello, I'm new in the forum and my native language isn't English so I'm sorry if I do some mistakes. I need to do a homework (Space Invaders) and I don't know why but I keep getting this error : IndexError: Cannot choose from an empty sequence. Can anyone help me? Here is my code :
import pygame,sys
from pygame.locals import *
import random
pygame.init()
pygame.font.init()
mainclock= pygame.time.Clock()
window=pygame.display.set_mode((450,560,),0,32) # Taille fenêtre du jeu
pygame.display.set_caption('SpaceInvader') # titre de la fenêtre
xs=20 # coordonnées de départ du vaisseau
ys=500
i=0
missile=[]
Gauche=False
Droite=False
Feu = False
Texty = pygame.font.Font('SUPERPOI_R.TTF', 10)
Obj_texte = Texty.render('les envahisseurs', 0, (0,0,255))
clock = pygame.time.Clock()
Movespeed=4
toile=pygame.image.load('toile.png')
background=pygame.image.load('background.png')
ship1=pygame.image.load('ship1.png')
ship2=pygame.image.load('ship2.png')
m=[]
meteor=pygame.image.load('meteor.png')
temptir1 = i + random.randint(30,80)
i=0
for b in range (450,560,10):
for o in range (20,300,50):
choix1=random.choice(m)
m.append(pygame.Rect(choix.bottom+0,choix.bottom,0,0))
cible=[]
invader1=pygame.image.load("invader1.png")
invader2=pygame.image.load("invader2.png")
i=0
for n in range(200,400,100):
for i in range(20,300,50):
cible.append(pygame.Rect(i,n,32,24)) # Liste des rectangles des images cibles
tir_cible=[]
temptir = i + random.randint(15,60)
def ajouter_temptir():
choix=random.choice(cible)
tir_cible.append(pygame.Rect(choix.left+12,choix.bottom,6,16))
while True:
window.blit(background,(0,0)) # Image arrière plan
window.blit(Obj_texte,(50,20)) # Placer le texte
for alien in cible: #deplacement des aliens
alien.left+=Movespeed
for alien in cible:
if alien.right>450 or alien.left<0: #deplacement sur le cote
Movespeed*=-1
break
if temptir <= i:
temptir = i + random.randint(15,60) #Tir des aliens
ajouter_temptir()
if temptir1 <= i:
temptir1 = i + random.randint(30,80) #Asteroïdes
ajouter_temptir1()
for event in pygame.event.get(): # Traiter les évènements du clavier
if event.type== KEYDOWN:
if event.key==K_ESCAPE:
pygame.quit()
sys.exit()
if event.key==K_RIGHT:
Droite = True
if event.key==K_LEFT:
Gauche = True
if event.type== KEYUP:
if event.key==K_RIGHT:
Droite = False
if event.key==K_LEFT:
Gauche = False
if event.key==K_SPACE:
missile.append(pygame.Rect(xs+8,ys,6,16))
i=i+1
if Gauche and xs>10: xs =xs-10
if Droite and xs <400 : xs +=10
for tir in missile: # pour chaque missile existant
tir.top=tir.top-20 # soustraire 10 à la coordonnée du point haut
window.blit(toile,tir) # toile d'arraignée
if tir.top==100: # si le missile arrive en haut de l'écran
missile.remove(tir) # supprimer le missile de la liste
for c in cible:
if tir.colliderect(c):
missile.remove(tir)
cible.remove(c)
for tir in tir_cible:
tir.top=tir.bottom+20
window.blit(toile,tir)
if tir.bottom==-20:
tir_cible.remove(tir)
for tir2 in m:
tir2.top=tir.bottom+20
window.blit(meteor,tir)
if tir2.bottom==-20:
m.remove(tir)
if int(i/20)%2 ==1:
window.blit(ship1,(xs,ys))
else:
window.blit(ship2,(xs,ys))
for c in cible:
if int(i/20)%2 ==1:
window.blit(invader1,c)
else:
window.blit(invader2,c)
pygame.display.update()
clock.tick(30)PS : Some codes are in french like gauche which means left. Thanks in advance.