import random
import pygame
from perlin_noise import PerlinNoise

def generate_planet_surface(screen, seed):
    width, height = screen.get_size()
    scale = 100

    # Create a PerlinNoise instance
    noise_gen = PerlinNoise(seed=seed)

    for y in range(height):
        for x in range(width):
            # Normalize coordinates by dividing by the scale
            nx = x / scale
            ny = y / scale
            
            # Get the Perlin noise value for the current position
            color_val = noise_gen([nx, ny])
            
            # Scale and clamp the color value to a 0-255 range
            gray = int((color_val + 1) / 2 * 255)
            gray = max(0, min(255, gray))
            
            # Set the pixel color at (x, y)
            screen.set_at((x, y), (gray, gray, gray))