# def oblicz_wysokosc(proporcje_szerokosc, proporcje_wysokosc, piksele_szerokosc):
#     return int(piksele_szerokosc / proporcje_szerokosc * proporcje_wysokosc)

# print(oblicz_wysokosc(10,4,1200))



import pygame
pygame.init

SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600

screen_surface = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))

pygame.display.set_caption("UNDERTALE")

clock = pygame.time.Clock()

game_running = True

def load_image(img_path: str, position):
    #image - obraz
    image = pygame.image.load(img_path)
    image = pygame.transform.scale(image, (300, 225))
    surface = image.convert()
    #surface - powierzchnia
    transparent_color = (0, 0, 0)
    surface.set_colorkey(transparent_color)
    #rectangle - wymiar
    rect = surface.get_rect(center=position)

    return [image,surface,rect]

player_pos = [SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2]
player = load_image("charajumpscare.png", player_pos)

def print_image(img_list) -> None:
    image, surface, rect = img_list
    screen_surface.blit(surface, rect)

def set_position_image(img_list, position):
    image, surface, rect = img_list
    rect = surface.get_rect(center=position)
    return [image, surface, rect]

def calculate_player_movement(keys):
    speed = 10
    delta_x = 0
    delta_y = 0

    if keys[pygame.K_LSHIFT]:
        speed *= 2

    if keys[pygame.K_w]:
        delta_y -= speed
    if keys[pygame.K_s]:
        delta_y += speed
    if keys[pygame.K_a]:
        delta_x -= speed
    if keys[pygame.K_d]:
        delta_x += speed

    return[delta_x, delta_y]





#limit pozycji
def limit_position(position):
    x, y = position
    x = max(0, min(x, SCREEN_WIDTH))
    y = max(0, min(y, SCREEN_HEIGHT))
    return[x, y]

while game_running:
    events = pygame.event.get()

    for event in events:
        print(event)

        if event.type == pygame.QUIT:
            game_running = False

    pressed_keys = pygame.key.get_pressed()
    #######################################################
    delta_x, delta_y = calculate_player_movement(pressed_keys)

    player_pos[0] += delta_x
    player_pos[1] += delta_y

    player_pos = limit_position(player_pos)

    player = set_position_image(player, player_pos)
    screen_surface.fill([255, 0, 0])
    print_image(player)

    pygame.display.update()
    clock.tick(60)

pygame.quit()
quit()