# Nathan Hinton 22 Dec 2025
# Planet file

require 'securerandom'

# A planet object for the Game module
class Planet
  attr_reader :owner, :planet_id

  # Creates a new planet.
  #
  # @param width [Integer] The width of the game
  # @param height [Integer] The height of the game
  # @param depth [Integer] The depth of the game
  def initialize(width, height, depth)
    @owner = nil
    @buildings = []
    @position = [rand(width), rand(height), rand(depth)]
    @planet_id = SecureRandom.hex
  end

  # Returns if the planet can be claimed. Currently requires that there be no
  # buildings on the planet.
  def claimable?
    if @owner.nil?
      return true
    elsif @buildings == []
      return true
    end
    return false
  end

  # Function that allows a player to claim the planet and to become the owner.
  def claim(player)
    @owner = player
  end

  # Function called to update the planet.
  def update(delta_time)
  end


  # Function to return info to the client about a planet
  def info_update
    return {
      'id' => @planet_id,
      'position' => @position
    }
  end


  ##########################
  ##### UTIL FUNCTIONS #####
  ##########################


  # Save a player to a file
  def save_to_file
    File.open("game_data/#{self.planet_id}_planet_.save", 'wb') do |fi|
      # Load resources for the player:
      fi.write(Marshal.dump(self))
    end
    return self.planet_id
  end

  # Load a player from a file
  def self.load_from_save(fname)
    File.open("game_data/#{fname}_planet_.save", 'rb') do |fi|
      # Load resources for the player:
      Marshal.load(fi.read)
    end
  end

end