Hello!
I had a (very) little experience of programming with python from my classes and i decided to start making game. I did a crappy attempt at pong that i will post later because it has a lot of problem, and then i did this very simplistic snake, which i ask you to criticize without mercy.
I went through the tutorial "Invent Your Own Computer Games With Python" and stop just before the part where he explains how to implement sound an images. I felt that i could already do many games and gain some experience with what i read.
I plan to add a menu and the possiblility to start again a game after losing, also a victory message (when you have filled the entire screen) and a score. Also the possibility to chose the difficulty.
I plan to first finish my pong and then work into adding theses into the snake.
If you could point how i could improve my code it would be great. I especially think i could have used more function and i ant to know you opinion about what could be functionized.
Thanks!
import pygame, sys, time, random
from pygame.locals import *
pygame.init()
mainClock = pygame.time.Clock()
WINDOWWIDTH = 480
WINDOWHEIGHT = 480
SPEED = 5
windowSurface = pygame.display.set_mode((WINDOWWIDTH, WINDOWHEIGHT), 0, 32)
pygame.display.set_caption('Running_window')
basicFont = pygame.font.SysFont(None, 48)
headPosition = [240 , 240]
foodPos = [20 + random.randint(0, 19)*22, 20 + random.randint(0, 19)*22]
head = pygame.Rect(headPosition[0] ,headPosition[1] ,20 ,20)
tail = [pygame.Rect(headPosition[0] ,headPosition[1] ,10 ,10)]
tailPosition = [240, 240]
food = pygame.Rect(foodPos[0] + 5, foodPos[1] + 5, 10, 10)
square = [pygame.Rect(16, 16, 444, 2), pygame.Rect(16, 16, 2, 444), pygame.Rect(460, 16, 2, 444), pygame.Rect(16, 460, 446, 2)]
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)
position2 = []
updates = 0
seconds = 0
foodEaten = 0
moveUp = False
moveDown = False
moveLeft = False
moveRight = False
foodIsHere = False
lose = False
while True:
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
if event.type == KEYDOWN:
# events for changing the direction of the snake
if moveRight:
if event.key == K_UP:
moveDown = False
moveUp = True
moveLeft = False
moveRight = False
if event.key == K_DOWN:
moveUp = False
moveDown = True
moveLeft = False
moveRight = False
if event.key == K_RIGHT:
moveUp = False
moveDown = False
moveLeft = False
moveRight = True
if event.key == K_LEFT:
pygame.quit()
sys.exit()
if moveLeft:
if event.key == K_UP:
moveDown = False
moveUp = True
moveLeft = False
moveRight = False
if event.key == K_DOWN:
moveUp = False
moveDown = True
moveLeft = False
moveRight = False
if event.key == K_LEFT:
moveDown = False
moveUp = False
moveLeft = True
moveRight = False
if event.key == K_RIGHT:
pygame.quit()
sys.exit()
if moveDown:
if event.key == K_DOWN:
moveUp = False
moveDown = True
moveLeft = False
moveRight = False
if event.key == K_LEFT:
moveDown = False
moveUp = False
moveLeft = True
moveRight = False
if event.key == K_RIGHT:
moveUp = False
moveDown = False
moveLeft = False
moveRight = True
if event.key == K_UP:
pygame.quit()
sys.exit()
if moveUp:
if event.key == K_UP:
moveDown = False
moveUp = True
moveLeft = False
moveRight = False
if event.key == K_LEFT:
moveDown = False
moveUp = False
moveLeft = True
moveRight = False
if event.key == K_RIGHT:
moveUp = False
moveDown = False
moveLeft = False
moveRight = True
if event.key == K_DOWN:
pygame.quit()
sys.quit()
else:
if event.key == K_UP:
moveDown = False
moveUp = True
moveLeft = False
moveRight = False
if event.key == K_LEFT:
moveDown = False
moveUp = False
moveLeft = True
moveRight = False
if event.key == K_RIGHT:
moveUp = False
moveDown = False
moveLeft = False
moveRight = True
if event.key == K_DOWN:
moveUp = False
moveDown = True
moveLeft = False
moveRight = False
if event.type == KEYUP:
if event.key == K_ESCAPE:
pygame.quit()
sys.exit()
#eating of food
if head.colliderect(food):
foodEaten += 1
foodIsHere = False
while foodPos in tailPosition:
foodPos = [20 + random.randint(0, 19)*22, 20 + random.randint(0, 19)*22]
tail.append(head)
tailPosition.append(headPosition)
#apparitions of food
if foodIsHere == False:
food = pygame.Rect(foodPos[0] + 5, foodPos[1] + 5, 10, 10)
foodIsHere = True
#movement of the tail of the snake
if tail != []:
tail.reverse()
tailPosition.reverse()
tail.pop(0)
tailPosition.pop(0)
tail.append(pygame.Rect(headPosition[0] + 5,headPosition[1] + 5 ,10 ,10))
tailPosition.append(headPosition)
tail.reverse()
tailPosition.reverse()
# movements of the head of the snake
if moveRight and (not moveLeft):
headPosition[0] += 22
head = pygame.Rect(headPosition[0] ,headPosition[1] ,20 ,20)
elif moveLeft and (not moveRight):
headPosition[0] -= 22
head = pygame.Rect(headPosition[0] ,headPosition[1] ,20 ,20)
elif moveUp and (not moveDown):
headPosition[1] -= 22
head = pygame.Rect(headPosition[0] ,headPosition[1] ,20 ,20)
elif moveDown and (not moveUp):
headPosition[1] += 22
head = pygame.Rect(headPosition[0] ,headPosition[1] ,20 ,20)
#collision ith the tail
for piece in tail[1:]:
if head.colliderect(piece):
lose = True
# collision with the border of the screen
for bord in square :
if head.colliderect(bord):
lose = True
if lose == True:
while lose:
windowSurface.fill(BLACK)
lost1 = basicFont.render('You lose.', True, WHITE, None)
textRectLost1 = lost1.get_rect()
textRectLost1.centerx = 240
textRectLost1.centery = 180
lost2 = basicFont.render('Press q to quit.', True, WHITE, None)
textRectLost2 = lost2.get_rect()
textRectLost2.centerx = 240
textRectLost2.centery = 250
windowSurface.blit(lost2, textRectLost2)
windowSurface.blit(lost1, textRectLost1)
pygame.display.update()
for event in pygame.event.get():
if event.type == KEYUP:
if event.key == ord('q'):
pygame.quit()
sys.exit()
windowSurface.fill(BLACK)
pygame.draw.rect(windowSurface, RED, food)
pygame.draw.rect(windowSurface, BLUE, head)
for piece in tail:
pygame.draw.rect(windowSurface, GREEN, piece)
pygame.draw.rect(windowSurface, WHITE, square[0])
pygame.draw.rect(windowSurface, WHITE, square[1])
pygame.draw.rect(windowSurface, WHITE, square[2])
pygame.draw.rect(windowSurface, WHITE, square[3])
updates += 1
pygame.display.update()
mainClock.tick(SPEED)
