CODEWITHSUNDEEP
pythonpython-3.xfunctionclasspygame
user15401554
user15401554

Reputation:

TypeError: __init__() takes 3 positional arguments but 4 were given Keyboard Commands

I'm working on an assignment for my grade 11 comp. sci class and I keep getting this error no matter what I do. Basically I need to modify pre-existing code to give keyboard commands to the cube instead of mouse commands using the given "player" class, I tried making the "Block" class a parent to the "Player" class but I keep getting the 3 positional arguments but 4 given error.

import pygame
import random

BLACK = (  0,   0,   0)
WHITE = (255, 255, 255)
RED   = (255,   0,   0)

class Block(pygame.sprite.Sprite):
    def __init__(self, color, width, height):
        super().__init__()
        self.image = pygame.Surface([width, height])
        self.image.fill(color)
        self.rect = self.image.get_rect()

class Player(Block):

    def __init__(self, x, y):
        super().__init__()

        self.image = pygame.Surface([15, 15])
        self.image.fill(BLACK)

        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y

        self.change_x = 0
        self.change_y = 0

    def changespeed(self, x, y):
        self.change_x += x
        self.change_y += y
 
    def update(self):
        self.rect.x += self.change_x
        self.rect.y += self.change_y

pygame.init()

screen_width = 700
screen_height = 400
screen = pygame.display.set_mode([screen_width, screen_height])


block_list = pygame.sprite.Group()

all_sprites_list = pygame.sprite.Group()

for i in range(50):
    block = Block(200, 20,20)

    block.rect.x = random.randrange(screen_width)
    block.rect.y = random.randrange(screen_height)

    block_list.add(block)
    all_sprites_list.add(block)


player = Player(RED, 20, 20)
all_sprites_list.add(player)


done = False

clock = pygame.time.Clock()

score = 0

while not done:
    for event in pygame.event.get(): 
        if event.type == pygame.QUIT: 
            done = True
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                player.rect_x = player.change_x

    screen.fill(WHITE)

    pos = pygame.mouse.get_pos()

    player.rect.x = player.rect.x
    player.rect.y = player.rect.y


    blocks_hit_list = pygame.sprite.spritecollide(player, block_list, True)


    for block in blocks_hit_list:
        score += 1
        print(score)


    all_sprites_list.draw(screen)

    pygame.display.flip()

    clock.tick(60)

pygame.quit()

Upvotes: 2

Views: 956

Answers (1)

Rabbid76
Rabbid76

Reputation: 211268

You want to create a player with a color and a position:

player = Player(RED, 20, 20)

The constructor of the base class (Block) has 3 arguments:

class Block(pygame.sprite.Sprite):
   def __init__(self, color, width, height):
       self.image = pygame.Surface([width, height])
       self.image.fill(color)
       self.rect = self.image.get_rect()

Therefore, the constructor has to have the parameters color, x and y. Furthermore you have to pass arguments to the base class. You don't need to create the Surface (image) and the rectangle (rect) in the subclass. This is done in the base class:

class Player(Block):

    def __init__(self, color, x, y):
        super().__init__(color, 15, 15)
        
        self.rect.x = x
        self.rect.y = y

        self.change_x = 0
        self.change_y = 0

Upvotes: 1

Related Questions