import pygame
from pygame.sprite import Sprite
from pygame.locals import (RLEACCEL,K_UP,K_DOWN,K_LEFT,K_RIGHT,K_ESCAPE,KEYDOWN,QUIT)
pygame.init()
clock = pygame.time.Clock()

screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption('My game')


class Player:

    def __init__ (self):
        self.x = 200
        self.y = 200

        self.width = 50
        self.height = 100
        
        self.speed = 3

    def move(self, dx=0, dy=0):
        self.x += dx * self.speed

        if self.x - self.width/2 < 0:
            self.x = self.width/2

        if self.x + self.width/2 > screen_width:
            self.x = screen_width - self.width/2
        
        self.y += dy * self.speed

        if self.y - self.height/2 < 0:
            self.y = self.height/2

        if self.y + self.height/2 > screen_height:
            self.y = screen_height - self.height/2
    
    def draw(self):
        left_upper_x = self.x - self.width/2
        left_upper_y = self.y - self.height/2
        pygame.draw.rect(screen,(0, 0, 255),
                         (round(left_upper_x),round(left_upper_y),self.width,self.height))
# class Player(pygame.sprite.Sprite):
#     def __init__(self):
#         super().__init__()
#         self.surf = pygame.Surface((75, 25))
#         self.surf.fill((0, 0, 0))
#         self.rect = self.surf.get_rect()

# class Player(pygame.sprite.Sprite):
#     def __init__(self):
#         super(Player, self).__init__()
#         self.surf = pygame.transform.scale(
#         pygame.image.load("rat.png").convert(),(50, 36))
#         self.surf.set_colorkey((0, 0, 0), RLEACCEL)
#         self.rect = self.surf.get_rect()





done = False
player = Player()
#all_sprites = pygame.sprite.Group()
#all_sprites.add(player)
while not done:
    
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True


    pressed_keys = pygame.key.get_pressed()

    if pressed_keys[pygame.K_LEFT]:
        player.move(dx=-1)
    elif pressed_keys[pygame.K_RIGHT]:
        player.move(dx=+1)
        
    if pressed_keys[pygame.K_UP]:
        player.move(dy=-1)
    elif pressed_keys[pygame.K_DOWN]:
        player.move(dy=+1)
    

    
    screen.fill((0, 0, 0))
    pygame.display.flip()
    clock.tick(60)

pygame.quit()