import pygame
import math

def draw_map(screen, player_pos, player_dir):
    screen.fill(pygame.Color(64,64,64))

    pygame.draw.rect(screen, "blue", pygame.Rect(player_pos-(2.5,2.5),(5,5)))
    pygame.draw.line(screen, "blue", player_pos, player_pos+(player_dir))

def game_loop():

    pygame.init()
    pygame.display.set_caption("Maze Raycaster")
    screen = pygame.display.set_mode((1280, 720))

    top_view = pygame.Surface((screen.get_width() // 2, screen.get_height()))
    game_view = pygame.Surface((screen.get_width() // 2, screen.get_height()))

    myfont = pygame.font.SysFont("monospace", 15)

    clock = pygame.time.Clock()
    running = True
    dt = 0

    player_pos = pygame.Vector2(200, 200)
    player_dir = pygame.Vector2(-100, 0)

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

        game_view.fill(pygame.Color(0,0,0))

        draw_map(top_view, player_pos, player_dir)

        keys = pygame.key.get_pressed()
        if keys[pygame.K_w]:
            player_pos += player_dir * dt
        if keys[pygame.K_s]:
            player_pos -= player_dir * dt
        if keys[pygame.K_a]:
            player_pos -= player_dir.rotate(90) * dt
        if keys[pygame.K_d]:
            player_pos += player_dir.rotate(90) * dt
        if keys[pygame.K_q]:
            player_dir.rotate_ip(-90 * dt)
        if keys[pygame.K_e]:
            player_dir.rotate_ip(90 * dt)
        if keys[pygame.K_n]:
            player_dir.scale_to_length(player_dir.length() / 1.01)
        if keys[pygame.K_m]:
            player_dir.scale_to_length(player_dir.length() * 1.01)
        if keys[pygame.K_ESCAPE]:
            running = False

        screen.blit(top_view, (0,0))
        screen.blit(game_view, (screen.get_width() // 2,0))

        label = myfont.render(
            f"Player: {player_pos} {player_dir} {round(player_dir.length())}",
            True, (192,192,192)
        )
        screen.blit(label, (10, 10))

        pygame.display.update()

        dt = clock.tick(60) / 1000

    pygame.quit()

game_loop()