[PyGame] sound effect delay and program laggy

[xBlackHeartx]

Honestly, I haven't been saving older versions of my program (if I did, I would probably have over 100 different versions due to the innumerable tweaks I've made). I do however have ONE older version from before I added in the start menu. The only reason I have this is I started saving it outside the default folder, so that I could actually run it from outside the idle (I hadn't figured out how to set my AppData folder to not hidden at the time).

Here's that code:

import random
import pygame
pygame.init()

screenWidth=500
screenHeight=500

mainWindow=pygame.display.set_mode((screenWidth,screenHeight))
pygame.display.set_caption("Snake")

x=250
y=250
snakeSize=50
move="down"
length=0
path=[]
run=True

def frandxy():
    global posx
    global posy
    posx=snakeSize*(random.randint(0,screenWidth/snakeSize-1))
    posy=snakeSize*(random.randint(0,screenWidth/snakeSize-1))
    if (posx,posy) in path or x==posx and y==posy:
            frandxy()

def closeGame():
    pygame.quit()
    quit()

def loseGame():
    while run:
        for event in pygame.event.get():
            if event.type==pygame.QUIT:
                closeGame()
        
        mainWindow.fill((0,0,0))
        pygame.draw.rect(mainWindow,(0,255,0),(screenWidth/2-snakeSize*3,\
                                               screenHeight/2-snakeSize,\
                                               snakeSize*6,snakeSize*2))
        font=pygame.font.SysFont('arialblack',20)
        textTop=font.render('GAME OVER',0,(0,0,0))
        textBottom=font.render(('Your Length Was: '+str(length)),0,(0,0,0))

        mainWindow.blit(textTop, (screenWidth/2-textTop.get_width()/2,screenHeight/2-snakeSize))
        mainWindow.blit(textBottom, (screenWidth/2-textBottom.get_width()/2,screenHeight/2))
        pygame.display.update()
        
def game():
    global run
    global x
    global y
    global move
    global length
    global path
    while run:
        
        pygame.time.delay(200)
        
        for event in pygame.event.get():
            if event.type==pygame.QUIT:
                closeGame()

        key=pygame.key.get_pressed()
        if key[pygame.K_UP] and move != "down":
            move="up"
        if key[pygame.K_DOWN] and move != "UP":
            move="down"
        if key[pygame.K_RIGHT] and move != "left":
            move="right"
        if key[pygame.K_LEFT] and move != "right":
            move="left"

        path.insert(0,(x,y))
    #move snake
        if move=="down" and y<=screenHeight-snakeSize:
            y+=snakeSize
        if move=="down" and y>=screenHeight:
            y=0
        if move=="up" and y>=0:
            y-=snakeSize
        if move=="up" and y<0:
            y=screenHeight-snakeSize
        if move=="right" and x<=screenWidth-snakeSize:
            x+=snakeSize
        if move=="right" and x>=screenWidth:
            x=0
        if move=="left" and x>=0:
            x-=snakeSize
        if move=="left" and x<0:
            x=screenWidth-snakeSize

        if x==posx and y==posy:
            length+=1
            frandxy()
        if (x,y) in path:
            loseGame()
            print("You lose. Your length was", length)
            pygame.quit()
            break
        if length>=100:
            print("You won! The snake filled up the whole screen!")
            pygame.quit()
            break

        mainWindow.fill((0,0,0))
        #draw snake
        if length>0:
            for i in range(length):
                pygame.draw.rect(mainWindow, (0,255,0),(path[i][0],path[i][1], snakeSize,snakeSize))
        pygame.draw.rect(mainWindow, (0,255,0),(x, y, snakeSize, snakeSize))
        #draw food
        pygame.draw.rect(mainWindow, (255,0,0),(posx,posy, snakeSize, snakeSize))
        if len(path)>length:
            path=path[:(length)]
        pygame.display.update()
frandxy()
game()

And yes, this is really sluggish. The reason for the input lag was it was only checking for key presses every fifth of a second, which meant that my button presses would fail to register if I didn't hold down the button for long enough. Even reducing the delay didn't really fix this. Replacing that line of code with an fps limiter completely removed the input lag problem.

---

And yes, I did learn about classes in my c++ and java classes, I just couldn't really wrap my head around them. One thing I was taught though, is it was pointless to put the code for classes in programs that actually use them; you're supposed to put them in a separate module and then import that into the a program you want to use them in. I never saw the need to do make highly a module with highly specialized classes that would only be used in one game. I've only thought about making classes for things I plan to use in more than one program, such as making buttons, labels, code so you can actually close the application, you get the idea.