import pygame
from .math import sub

WIDTH = 1280
HEIGHT = 720

surface = None
screen = None


def init():
    pygame.display.set_caption("Geom Demo")
    pygame.mouse.set_visible(False)
    pygame.key.set_repeat(500, 60)
    global surface
    global screen

    surface = pygame.display.set_mode((WIDTH, HEIGHT))

    from . import draw
    draw.init()

    from .screen import Screen
    screen = Screen()


def loop():
    for event in pygame.event.get(pygame.QUIT):
        return False

    surface.fill((0, 0, 0))

    screen.render(surface)

    pygame.display.update()
    return True

def get_cursor_pos():
    return sub(*pygame.mouse.get_pos(), WIDTH / 2, HEIGHT / 2)