import pygame

from pygame import Rect, time

from random import  randint
class board:
    def __init__(self, width, height):
        self.width = width
        self.height = height
        self.board = [[(0, 0, 0)] * height for _ in range(width)]
        self.left = 10
        self.top = 10
        self.cell_size = 30

    def set_view(self, left, top, cell_size):
        self.left = left
        self.top = top
        self.cell_size = cell_size

    def render(self):
        for i in range(self.width):
            for j in range(self.height):
                a = Rect(self.left + self.cell_size * i + 1, self.top + self.cell_size * j + 1, self.cell_size - 1, self.cell_size - 1)
                screen.fill((randint(1, 255), randint(1, 255), randint(1, 255)), a)
                pygame.draw.rect(screen, pygame.Color("white"), (
                        self.left + self.cell_size * i, self.top + self.cell_size * j, self.cell_size, self.cell_size),
                                     1)


    def get_cell(self, mouse_pos):
        b, c = mouse_pos
        b -= self.left
        c -= self.top
        if b < 0 or c < 0:
            return [-1, -1]
        b //= self.cell_size
        c //= self.cell_size
        if b >= self.width or c >= self.height:
            return [-1, -1]
        return [b, c]

    def on_click(self, cell_coords):
        self.board[cell_coords[0]][cell_coords[1]] = (randint(1, 255), randint(1, 255), randint(1, 255))

    def get_click(self, mouse_pos):

        b, c = self.get_cell(mouse_pos)
        self.on_click((b, c))

pygame.init()
a = board(38, 21)
a.set_view(10, 10, 50)
width = 1920
height = 1080
size = (width, height)
v = 0
screen = pygame.display.set_mode(size)
clock = pygame.time.Clock()
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type == pygame.MOUSEBUTTONDOWN:
            a.get_click((event.pos))
    a.render()
    clock.tick(1000)
    pygame.display.flip()
    v += 1
pygame.quit()