I am making a snake game, and if I don't hold a key or constantly move my mouse over the window, the snake stops and waits for another input to start moving again.
import pygame, sys
from pygame.locals import *
from sys import exit
import keyboard
import random
import time
class body:
def __init__(self,properties=[0,0,20,20],colour=1):
self.properties=properties
self.colour=colour
self.next=None
class fruit:
def __init__(self,centre=[0,0],size=10):
self.centre=centre
self.size=size
def drawSnake(window,snake):
temp=snake
while temp:
# Alternate snake colour
if temp.colour==-1:
colour=(0,150,0)
else:
colour=(0,100,0)
temp.colour=temp.colour*-1
pygame.draw.rect(window,colour,temp.properties)
temp=temp.next
return snake
def drawApple(window,snake,size):
numApples=500/(size*2)
bound=numApples-1
apple=fruit([(random.randint(0,bound)*(500/numApples))+size,(random.randint(0,bound)*(500/numApples))+size],size)
#apple=fruit([290,250],10)
pygame.draw.circle(window,"red",apple.centre,apple.size)
return apple
def newGame():
# Draw initial snake and apple
window.fill((255, 255, 255))
snake=body([240,240,20,20],-1)
snake=drawSnake(window,snake)
apple=drawApple(window,snake,10)
return snake,apple
def die(snake):
pygame.draw.rect(window,(180,0,0),[snake.properties[0],snake.properties[1],snake.properties[2],snake.properties[3]])
pygame.display.update()
time.sleep(1)
def move(snake,apple,direction,length):
# New body piece location
x=snake.properties[0]+direction[0]
y=snake.properties[1]+direction[1]
# If snake crashed, restart
if x<0 or y<0 or x>480 or y>480:
die(snake)
snake,apple=newGame()
return snake,apple,0
# Check if collision with body
temp=snake
'''
while temp:
if temp.properties[0]==x and temp.properties[1]==y:
snake,apple=newGame()
return snake,apple,0
temp=temp.next
'''
# Create new body piece with other colour and add to front of list
newBody=body([x,y,20,20],snake.colour*(-1))
newBody.next=snake
snake=newBody
# If apple is eaten
if [x,y]==[apple.centre[0]-10,apple.centre[1]-10]:
# Add 1 to length, spawn new apple, do not remove end body piece
length+=1
apple=drawApple(window,snake,10)
while temp:
# Check if apple spawned in body
if temp.properties[0]==apple.centre[0]-10 and temp.properties[1]==apple.centre[1]-10:
apple=drawApple(window,snake,10)
temp=snake.next
temp=temp.next
else:
# Remove end body piece
temp=snake
while temp.next:
# Check if collision with body
if temp.next.properties[0]==x and temp.next.properties[1]==y:
die(snake)
snake,apple=newGame()
return snake,apple,0
previous=temp
temp=temp.next
pygame.draw.rect(window,"white",temp.properties)
previous.next=None
return snake,apple,length
# Make window
pygame.init()
window=pygame.display.set_mode((500, 500))
pressed_keys=pygame.key.get_pressed()
snake,apple=newGame()
length=0
direction=[0,-20]
delay=0.1
while True:
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
pressed_keys=pygame.key.get_pressed()
if pressed_keys[K_w]:
if direction!=[0,20]:
direction=[0,-20]
elif pressed_keys[K_a]:
if direction!=[20,0]:
direction=[-20,0]
elif pressed_keys[K_s]:
if direction!=[0,-20]:
direction=[0,20]
elif pressed_keys[K_d]:
if direction!=[-20,0]:
direction=[20,0]
snake,apple,length=move(snake,apple,direction,length)
#delay=1/(length+1)
snake=drawSnake(window,snake)
time.sleep(delay)
pygame.display.update()
pygame.event.pump()
I want to only have to press a key to change the snake's direction and then have it always move, even if I do not give it any input. Is there a way to make it stop pausing?
