analyze-minecraft-stats/gen-stats.rb

#!/usr/bin/env ruby

require "json"
require "set"

# Run with gen-stats.rb <server_directory>
SERVER_DIR = ARGV[0] || "."

ADVENTURE_BIOMES = [
  "Beach",
  "Birch Forest",
  "Birch Forest Hills",
  "Cold Beach",
  "Cold Taiga",
  "Cold Taiga Hills",
  "Deep Ocean",
  "Desert",
  "DesertHills",
  "Extreme Hills",
  "Extreme Hills+",
  "Forest",
  "ForestHills",
  "FrozenRiver",
  "Ice Mountains",
  "Ice Plains",
  "Jungle",
  "JungleEdge",
  "JungleHills",
  "Mega Taiga",
  "Mega Taiga Hills",
  "Mesa",
  "Mesa Plateau",
  "Mesa Plateau F",
  "MushroomIsland",
  "MushroomIslandShore",
  "Ocean",
  "Plains",
  "River",
  "Roofed Forest",
  "Savanna",
  "Savanna Plateau",
  "Stone Beach",
  "Swampland",
  "Taiga",
  "TaigaHills",
]

class GenStats
  def initialize
    @all_explored_biomes = []
  end

  def run
    user_cache = JSON.load(File.read("#{SERVER_DIR}/usercache.json"))
    @users_by_uuid = user_cache.reduce({}) do |result, user|
      result[user["uuid"]] = user
      result
    end

    @all_stats = {
      "Play Time" => {},
      "Achievements" => {},
      "Unexplored Biomes" => {},
      "Deaths" => {},
      "Damage Dealt" => {},
      "Damage Taken" => {},
      "Mob Kills" => {},
      "Killed" => {},
      "Killed By" => {},
      "Items Broken" => {},
    }
    Dir["#{SERVER_DIR}/world/stats/*.json"].each do |stats_fname|
      load_stats(stats_fname)
    end

    print_stats
  end

  private

  def load_stats(stats_fname)
    File.basename(stats_fname) =~ /^(.*)\.json/
    user_name =
      if @users_by_uuid[$1]
        @users_by_uuid[$1]["name"]
      else
        $1
      end
    stats_file = JSON.load(File.read(stats_fname))
    stats = stats_file["stats"] || {}
    stats["minecraft:custom"] ||= {}

    @all_stats["Play Time"][user_name] =
      begin
        # stat is actually in ticks apparently
        minutes = (stats["minecraft:custom"]["minecraft:play_one_minute"] || 0) / 20 / 60
        hours = (minutes / 60).floor
        minutes -= (hours * 60)
        days = (hours / 24).floor
        hours -= (days * 24)
        "#{days}d #{hours}h #{minutes}m"
      end

#    @all_stats["Achievements"][user_name] =
#      stats.find_all do |stat_name, stat_value|
#        stat_name.start_with?("achievement.") and (stat_value.is_a?(Integer) or (stat_value.is_a?(Hash) and stat_value["value"] and stat_value["value"] > 0))
#      end.size

#    @all_stats["Unexplored Biomes"][user_name] =
#      if stats["achievement.exploreAllBiomes"]
#        explored_biomes = stats["achievement.exploreAllBiomes"]["progress"]
#        unexplored_biomes = ADVENTURE_BIOMES - explored_biomes
#        @all_explored_biomes += explored_biomes
#        unexplored_biomes.sort.join(", ")
#      end

    @all_stats["Deaths"][user_name] = stats["minecraft:custom"]["minecraft:deaths"] || 0

    @all_stats["Damage Dealt"][user_name] = stats["minecraft:custom"]["minecraft:damage_dealt"] || 0

    @all_stats["Damage Taken"][user_name] = stats["minecraft:custom"]["minecraft:damage_taken"] || 0

    @all_stats["Mob Kills"][user_name] = stats["minecraft:custom"]["minecraft:mob_kills"] || 0

    @all_stats["Killed"][user_name] =
      (stats["minecraft:killed"] || {}).reduce({}) do |result, (stat_name, stat_value)|
        if stat_name =~ /^minecraft:(\w+)$/
          result[$1] = stat_value
        end
        result
      end

    @all_stats["Killed By"][user_name] =
      (stats["minecraft:killed_by"] || {}).reduce({}) do |result, (stat_name, stat_value)|
        if stat_name =~ /^minecraft:(\w+)$/
          result[$1] = stat_value
        end
        result
      end

    @all_stats["Items Broken"][user_name] =
      (stats["minecraft:broken"] || {}).reduce({}) do |result, (stat_name, stat_value)|
        if stat_name =~ /^minecraft:(\w+)$/
          result[$1] = stat_value
        end
        result
      end
  end

  def print_stats
    @all_stats.each do |stat_name, stats|
      next if stats.empty?

      puts "== #{stat_name} =="

      if stats.first.last.is_a?(Hash)
        keys = stats.reduce([]) do |result, (player_name, stat_value)|
          result + stat_value.keys
        end.uniq.sort
        puts "|= Player |= #{keys.join(" |= ")}"
        stats.sort.each do |player_name, stat_value|
          values = keys.map do |key|
            stat_value[key]
          end
          puts "| #{player_name} | #{values.join(" | ")}"
        end
      else
        puts "|= Player |= Value"
        stats.sort.each do |player_name, stat_value|
          puts "| #{player_name} | #{stat_value}"
        end
      end

      puts

      if stat_name == "Unexplored Biomes"
        puts("Common Unexplored Biomes: " + (ADVENTURE_BIOMES - @all_explored_biomes).sort.join(", "))
        puts
      end
    end
  end
end

GenStats.new.run