Making a pacman game and not sure how to remove pac pellets after colliding with

Question

I'm currently making a pacman game and am struggling to figure out how to remove a pelllet from the screen after colliding with it. I tried changing the colour to black, but I couldn't make it work. I next tried to del the element index, but that also didn't work.

import pygame
import os
import sys


#initialise the game 
pygame.init()
screen = pygame.display.set_mode((448, 576))
done = False

y = 416
x = 232

#sets up clock and loads pacman image
clock = pygame.time.Clock()
PACMANSPRITE = pygame.image.load("pacman.png").convert_alpha()
PACMAN_MAP = pygame.image.load("pacman_map.png").convert_alpha()

#gets pacman intro music, sets music to lower volume then plays it
pygame.mixer.music.load('pacman_beginning.WAV')
pygame.mixer.music.set_volume(0.01)
pygame.mixer.music.play(0)


#box class, used for boxes to border pacmans map
class boxcollisions(pygame.sprite.Sprite):
    def __init__(self, x, y):
        self.y = y
        self.x = x
        self.rect = pygame.Rect(self.x, self.y, 12, 12)
        self.colour = (0, 128, 255)

    def draw(self, screen):
        pygame.draw.rect(screen, self.color, self.rect)

class pointclass(pygame.sprite.Sprite):
    def __init__(self, x, y):
        self.y = y
        self.x = x
        self.rect = pygame.Rect(self.x, self.y, 12, 12)
        self.colour = (255, 204, 153)
        self.score=0

    def draw(self, screen):
        pygame.draw.rect(screen, self.colour, self.rect)

    def addpoint(self):
        self.score+=1
        print(self.score)
        self.colour= (0,0,0)
        print('why isnt it working')

#pacmans class
class pacman(pygame.sprite.Sprite):
    def __init__(self, image, x, y):
        self.image = image
        self.y=416
        self.x=216
        self.currentx=self.x
        self.currenty=self.y
        self.rect = self.image.get_rect()
        self.rect.left = self.x
        self.rect.top = self.y
        self.rect.width=16
        self.rect.height=16

    # move pacman 
    def movement(self):
        pressed= pygame.key.get_pressed()
        if pressed[pygame.K_UP]:
            self.y -= 2
        if pressed[pygame.K_DOWN]:
            self.y += 2
        if pressed[pygame.K_LEFT]:
            self.x -= 2
        if pressed[pygame.K_RIGHT]:
            self.x += 2
        self.rect.left = self.x
        self.rect.top = self.y

    def draw(self, surface):
        # blit yourself at your current position
        surface.blit(self.image, (self.x, self.y))
        self.currentx=self.x
        self.currenty=self.y

    def outofbounds(self):
        self.y=self.currenty
        self.x=self.currentx
        self.rect.left = self.x
        self.rect.top = self.y

#instances the pacman class
sprite = pacman(PACMANSPRITE, x ,y)


#main game loop
while not done:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
                    done = True
                    pygame.quit()
                    sys.exit()


    screen.fill((0,0,0))
    screen.blit(PACMAN_MAP, (0, 0))

    #co-ordinates for boxes to set up map boundaries
    boxboundaries=[   
        [],
        [],
        [],
        [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28],
        [1,14,15,28], #5
        [1,3,4,5,6,8,9,10,11,12,14,15,17,18,19,20,21,23,24,25,26,28],
        [1,3,4,5,6,8,9,10,11,12,14,15,17,18,19,20,21,23,24,25,26,28],
        [1,3,4,5,6,8,9,10,11,12,14,15,17,18,19,20,21,23,24,25,26,28],
        [1,28],
        [1,3,4,5,6,8,9,11,12,13,14,15,16,17,18,20,21,23,24,25,26,28], #10
        [1,3,4,5,6,8,9,11,12,13,14,15,16,17,18,20,21,23,24,25,26,28],
        [1,8,9,14,15,20,21,28],
        [1,2,3,4,5,6,8,9,10,11,12,14,15,17,18,19,20,21,23,24,25,26,27,28],
        [1,2,3,4,5,6,8,9,10,11,12,14,15,17,18,19,20,21,23,24,25,26,27,28],
        [6,8,9,20,21,23], #15
        [6,8,9,11,12,13,14,15,16,17,18,20,21,23],
        [1,2,3,4,5,6,8,9,11,12,13,14,15,16,17,18,20,21,23,24,25,26,27,28],
        [1,11,12,13,14,15,16,17,18,28],
        [1,2,3,4,5,6,8,9,11,12,13,14,15,16,17,18,20,21,23,24,25,26,27,28],
        [6,8,9,11,12,13,14,15,16,17,18,20,21,23,24,25,26,27,28], #20
        [6,8,9,20,21,23],
        [6,8,9,11,12,13,14,15,16,17,18,20,21,23],
        [1,2,3,4,5,6,8,9,11,12,13,14,15,16,17,18,20,21,23,24,25,26,27,28],
        [1,14,15,28],
        [1,3,4,5,6,8,9,10,11,12,14,15,17,18,19,20,21,23,24,25,26,28], #25
        [1,3,4,5,6,8,9,10,11,12,14,15,17,18,19,20,21,23,24,25,26,28],
        [1,5,6,23,24,28],
        [1,2,3,5,6,8,9,11,12,13,14,15,16,17,18,20,21,23,24,26,27,28],
        [1,2,3,5,6,8,9,11,12,13,14,15,16,17,18,20,21,23,24,26,27,28],
        [1,8,9,14,15,20,21,28], # 30
        [1,3,4,5,6,7,8,9,10,11,12,14,15,17,18,19,20,21,22,23,24,25,26,28],
        [1,3,4,5,6,7,8,9,10,11,12,14,15,17,18,19,20,21,22,23,24,25,26,28],
        [1,28],
        [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28],                   
      ]


    #point spawn locations
    pointspawns=[ 
        [],
        [],
        [],
        [],
        [2,3,4,5,6,7,8,9,10,11,12,13,16,17,18,19,20,21,22,23,24,25,26,27], #5
        [2,7,13,16,22,27],
        [2,7,13,16,22,27],
        [2,7,13,16,22,27],
        [2,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27], 
        [2,7,10,19,22,27], #10
        [2,7,10,19,22,27],
        [2,3,4,5,6,7,10,11,12,13,16,17,18,19,22,23,24,25,26,27],
        [7,22],
        [7,22],
        [7,22], #15
        [7,22],
        [7,22],
        [7,22],
        [7,22],
        [7,22], #20
        [7,22],
        [7,22],
        [7,22],
        [2,3,4,5,6,7,8,9,10,11,12,13,16,17,18,19,20,21,22,23,24,25,26,27],
        [2,7,13,16,22,27], #25
        [2,7,13,16,22,27],
        [2,3,4,7,8,9,10,11,12,13,16,17,18,19,20,21,22,25,26,27],
        [4,7,10,19,22,25],
        [4,7,10,19,22,25],
        [2,3,4,5,6,7,10,11,12,13,16,17,18,19,22,23,24,25,26,27],
        [2,13,16,27], # 30
        [2,13,16,27],
        [2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27],                       
      ]

    #moves pacman
    sprite.movement()

    px=0
    py=-16

    for row in pointspawns:
        #y co ordinate
        py=py+16    
        for n in row:
            #x co ordinate
            n=n-1
            px=n*16
            point=(pointclass(px, py))
            #used to draw points
            point.draw(screen)
            if pygame.sprite.collide_rect(sprite, point):
                point.addpoint()


    #builds the boxes
    bx=0
    by=-16


    for row in boxboundaries:
        #y co ordinate
        by=by+16    
        for n in row:
            #x co ordinate
            n=n-1
            bx=n*16
            box=(boxcollisions(bx, by))
            #used to draw boxes for visual repsentation
            #box.draw(screen)
            if pygame.sprite.collide_rect(sprite, box):
                sprite.outofbounds()



    #draws pacman
    sprite.draw(screen)


    pygame.display.flip()
    clock.tick(60)

Answer 1

The easiest way I know (and I don't know a lot) is using pygame.sprite.Group() and pygame.sprite.spritecollide.

The basic logic here would be, create a sprite group for the pellets, create every pellet as a sprite and add it to the group. On every iteration of the game loop, draw the sprite group to the screen and validate if there was collision between the player character and any of the pellets in the pellets group with spritecollide.

spritecollide has a paramenter to eliminate the pellet when there is collision, so you want to set that to true, in order to avoid drawing it in the next loop.

#Basic logic as example.

pellets = pygame.sprite.Group()
#CREATE PELLETS AND ADD THEM TO THE pellets sprite group.

player = Sprite()

...

#IN THE GAME LOOP

    #Validate if there was a collision.
    pellets_hit = pygame.sprite.spritecollide(player, pellets, True) #True indicates that, if there were any hit, remove the pellet from the group.

    if len(pellet_hit):
        #Increment score or something.

    ...

    #Updating the display
    player.draw(screen)
    pellets.draw(screen) #If there were any hit, the pellet won't be in this group and won't be drawn

This is a project example that uses sprites and sprites groups: Snake game

Answer 2

i figured it out after a lot of work

#spawn pellets function
def spawnpellets(pointspawns):
    abc=0
    efg=0
    px=0
    py=-16
    for row in pointspawns:
        #y co ordinate
        py=py+16    
        for n in row:
            #x co ordinate
            n=n-1
            px=n*16
            point=(pointclass(px, py))
            #used to draw points
            point.draw(screen)
            if pygame.sprite.collide_rect(sprite, point):
                tempfunc(pointspawns, row, n , py)

def tempfunc(pointspawns, row, n, py):
    abc=n+1
    efg=py/16
    efg=int(efg)
    tempindex=row.index(abc)
    del pointspawns[efg][tempindex]
    pointspawns[int(efg)].insert(abc,0)

essentially, i had to put the spawning of the pellets into a function ,and then the collsions detection as another function, then using the vaules or row and n in my for loops i worked out the exact list and indexes i need to use, i then replaces the element with a 0 to have be redrawn no where. sorry if the code lookes a bit jimbled and im aware my variable names are terrible, but i literally just finished this now after 2 hours so im now going to take a well deserved break