from dotenv import load_dotenv
import os

load_dotenv()  # lädt .env beim Start

import math
import pygame
from compute import rotation_matrix, apply_mat_to_vec, add
from game import Game

class Moon(Game):
    def __init__(self):
       #.env
        width = int(os.getenv("WINDOW_WIDTH", "800"))
        height = int(os.getenv("WINDOW_HEIGHT", "600"))
        fps = int(os.getenv("FPS", "60"))

        super().__init__(width, height, fps, title="Moon – Orbit Demo")
        self.center = (width // 2, height // 2) #mittelpunlt
        self.earth_radius = 32 #Darstellung
        self.moon_radius = 12
        self.orbit_radius = int(os.getenv("ORBIT_RADIUS", "160"))  # neu
        self.angular_speed = float(os.getenv("ANGULAR_SPEED", "0.8"))  # neu
        self.angle = 0.0
        self.bg_color = (10, 10, 25)
        self.earth_color = (60, 120, 255)
        self.moon_color = (245, 245, 245)

    def update(self, dt: float) -> None:
        self.angle = (self.angle + self.angular_speed * dt) % (2 * math.pi)

    def draw(self, screen: pygame.Surface) -> None:
        screen.fill(self.bg_color)
        pygame.draw.circle(screen, self.earth_color, self.center, self.earth_radius) #Erde
        v0 = (float(self.orbit_radius), 0.0) #start
        R = rotation_matrix(self.angle) #rotierter vektor
        v_rot = apply_mat_to_vec(R, v0)
        pos = add(self.center, v_rot)
        pygame.draw.circle(screen, self.moon_color, (int(pos[0]), int(pos[1])), self.moon_radius)  #mOnd zeichenn

if __name__ == "__main__":
    Moon().run()