# Character Sheet object for holding the sprite sheet image file and additional
# data such as character width and height.
# This, of course, only takes into account fixed-width bitmap fonts.

from pygame import image


class CharSheet:
    def __init__(self, filename, characters, char_width, char_height):
        self.sheet = image.load(filename)
        self.characters = characters
        self.char_width = char_width
        self.char_height = char_height

    # Retrieves the top-left x and y co-ordinates of a character on the sprite
    # sheet.
    def get_sheet(self, character):
        index = self.characters.index(character.char)

        y = index // self.char_height
        x = index - (self.char_height * y)

        return [x, y]