main.py

"""The main module of Space Invaders game
"""
import os
import time
import random
from pathlib import Path

import pygame

from tools.asset_library import AssetsLibrary


class InputsTemp:
    """Temporary class for inputs.
    """
    def __init__(self):
        self.width_height = (750, 750)


def setup_display(width_height: tuple, caption: str="Space Invaders"):
    """Display setup function

    Args:
        width_height (tuple): tuple with window size (width, height)
        caption (str, optional): The caption on window ribon. Defaults to "Space Invaders".
    """
    window = pygame.display.set_mode(width_height)
    pygame.display.set_caption(caption)

    return window


def initialize():
    pygame.font.init()


def main():
    """Main function of Space Invaders game
    """
    initialize()
    inputs = InputsTemp()

    ui_font = pygame.font.SysFont("Comic Sans MS", 50)

    assets_library = AssetsLibrary((Path(__file__).parent / "Assets"))

    # todo: create display class to wrap display from pygame
    window = setup_display(inputs.width_height)

    background_img = assets_library.assets.bg_black

    run = True
    FPS = 60
    lives = 5
    level = 1
    clock = pygame.time.Clock()

    ui_margin = {
        "left": 10,
        "right": 10,
        "top": 10,
        "bottom": 10,
    }

    def redraw_window():
        window.blit(background_img.get_image(inputs.width_height), (0, 0))

        lives_label = ui_font.render(f"lives: {lives}", 1, (255, 255, 255))
        level_label = ui_font.render(f"level: {level}", 1, (255, 255, 255))

        window.blit(lives_label, (ui_margin["left"], ui_margin["top"]))
        window.blit(level_label, (inputs.width_height[0] - level_label.get_width() - ui_margin["right"], ui_margin["top"]))
        pygame.display.update()

    while run:
        clock.tick(FPS)

        redraw_window()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                run = False

    print("Game ended")


if __name__ == "__main__":
    main()