_constants.py

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import os
import pygame
pygame.init()

SCREEN = (1280, 720)
FPS = 60
PARENT = os.path.realpath(os.path.dirname(__file__))

BLACK = (0, 0, 0)
DARK_GRAY = (64, 64, 64)
GRAY = (128, 128, 128)
BOARD_WHITE = (230, 230, 220)
BOARD_WHITE_SELECT = (255, 255, 220)
BOARD_BLACK = (100, 150, 80)
BOARD_BLACK_SELECT = (140, 180, 110)

IMAGES = {}
for file in os.listdir(os.path.join(PARENT, "images")):
    if file.endswith(".png"):
        key = file.replace(".png", "")
        if not file.startswith("ic"):
            key = file[1].upper() if file[0] == "w" else file[1].lower()
        IMAGES[key] = pygame.image.load(os.path.join(PARENT, "images", file))