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A C# library to intrerface the Game State Integration found in Dota 2.

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Dota 2 GSI (Game State Integration)

A C# library to interface the Game State Integration found in Dota 2.

What is Game State Integration

Game State Integration hasn't been officially released for Dota 2, but it has been available for Counter-Strike: Global Offensive for a few months now. The concept is the same as CSGO's, you can read about Counter-Strike Game State Integration here.

About Dota 2 GSI

This library provides easy means of implementing Game State Integration from Dota 2 into C# applications. Library listens for HTTP POST requests made by the game on a specific address and port. Upon receiving a request, the game state is parsed and can be used.

JSON parsing is done though help of Newtonsoft's JSON.Net Framework.

After starting the GameStateListener instance, it will continuously listen for incoming HTTP requests. Upon a received request, the contents will be parsed into a GameState object.

Installation

Via NuGet:

Install-Package Dota2GSI

Manual installation:

  1. Get the latest binaries
  2. Get the JSON Framework .dll by Newtonsoft
  3. Extract Newtonsoft.Json.dll from Bin\Net45\Newtonsoft.Json.dll
  4. Add a reference to both Dota2GSI.dll and Newtonsoft.Json.dll in your project

Usage

  1. Create a GameStateListener instance by providing a port or passing a specific URI:
GameStateListener gsl = new GameStateListener(3000); //http://localhost:3000/
GameStateListener gsl = new GameStateListener("http://127.0.0.1:81/");

Please note: If your application needs to listen to a URI other than http://localhost:*/ (for example http://192.168.2.2:100/), you need to ensure that it is run with administrator privileges.
In this case, http://127.0.0.1:*/ is not equivalent to http://localhost:*/.

  1. Create a handler:
void OnNewGameState(GameState gs)
{
    //do stuff
}
  1. Subscribe to the NewGameState event:
gsl.NewGameState += new NewGameStateHandler(OnNewGameState);
  1. Use GameStateListener.Start() to start listening for HTTP POST requests from the game client. This method will return false if starting the listener fails (most likely due to insufficient privileges).

Layout

GameState
+-- Auth
    +-- Token
+-- Provider
    +-- Name
    +-- AppID
    +-- Version
    +-- TimeStamp
+-- Map
    +-- Name
    +-- MatchID
    +-- GameTime
    +-- ClockTime
    +-- IsDaytime
    +-- IsNightstalker_Night
    +-- GameState
    +-- Win_team
    +-- CustomGameName
    +-- Ward_Purchase_Cooldown
+-- Player
    +-- SteamID
    +-- Name
    +-- Activity
    +-- Kills
    +-- Deaths
    +-- Assists
    +-- LastHits
    +-- Denies
    +-- KillStreak
    +-- Team
    +-- Gold
    +-- GoldReliable
    +-- GoldUnreliable
    +-- GoldPerMinute
    +-- ExperiencePerMinute
+-- Hero
    +-- ID
    +-- Name
    +-- Level
    +-- IsAlive
    +-- SecondsToRespawn
    +-- BuybackCost
    +-- BuybackCooldown
    +-- Health
    +-- MaxHealth
    +-- HealthPercent
    +-- Mana
    +-- MaxMana
    +-- ManaPercent
    +-- IsSilenced
    +-- IsStunned
    +-- IsDisarmed
    +-- IsMagicImmune
    +-- IsHexed
    +-- IsMuted
    +-- IsBreak
    +-- HasDebuff
+-- Abilities
    +-- Count
    +-- Attributes
    +-- Ability[]
        +-- Name
        +-- Level
        +-- CanCast
        +-- IsPassive
        +-- IsActive
        +-- Cooldown
        +-- IsUltimate
+-- Items
    +-- CountInventory
    +-- GetInventoryAt( index )
    +-- InventoryContains( itemname )
    +-- InventoryIndexOf( itemname )
    +-- CountStash
    +-- GetStashAt( index )
    +-- StashContains( itemname )
    +-- StashIndexOf( itemname )
+-- Previously (Previous information from Game State)
+-- Added (Added information to the new Game State)

Item, and Hero names

Item and hero names are presented in their "internal name" format. A full list of item names can be found here and a full list of heroes can be located here.

Examples:
int Health = gs.Hero.Health; // 560
int MaxHealth = gs.Hero.MaxHealth; // 560
string HeroName = gs.Hero.Name; //npc_dota_hero_omniknight
int Level = gs.Hero.Level; //1

Console.WriteLine("You are playing as " + HeroName + " with " + Health + "/" + MaxHealth + " health and level " + Level);
//You are playing as npc_dota_hero_omniknight with 560/560 health and level 1

Null value handling

In case the JSON did not contain the requested information, these values will be returned:

Type Default value
int -1
string String.Empty

All Enums have a value enum.Undefined that serves the same purpose.

Example program

Prints "You bought an item" when you buy an item, and "It is night time" when it is night time.

using Dota2GSI;
using System;

namespace DOTA2GSI_sample
{
    static class Program
    {
        GameStateListener gsl;
        
        static void Main(string[] args)
        {
            gsl = new GameStateListener(4000);
            gsl.NewGameState += new NewGameStateHandler(OnNewGameState);

            if (!gsl.Start())
            {
                System.Windows.MessageBox.Show("GameStateListener could not start. Try running this program as Administrator.\r\nExiting.");
                Environment.Exit(0);
            }
            Console.WriteLine("Listening for game integration calls...");
        }

        static void OnNewGameState(GameState gs)
        {
            if(gs.Map.GameState == DOTA_GameState.DOTA_GAMERULES_STATE_GAME_IN_PROGRESS)
            {
                if(gs.Added.Items.CountInventory > gs.Items.CountInventory)
                {
                    Console.WriteLine("You bought an item");
                }
                
                if(!gs.Map.IsDaytime || gs.Map.IsNightstalker_Night)
                {
                    Console.WriteLine("It is night time");
                }
            }
        }
    }
}

You will also need to create a custom gamestate_integration_*.cfg in game/dota/cfg/gamestate_integration/, for example:
gamestate_integration_test.cfg:

"Dota 2 Integration Configuration"
{
    "uri"           "http://localhost:4000/"
    "timeout"       "5.0"
    "buffer"        "0.1"
    "throttle"      "0.1"
    "heartbeat"     "30.0"
    "data"
    {
        "provider"      "1"
        "map"           "1"
        "player"        "1"
        "hero"          "1"
        "abilities"     "1"
        "items"         "1"
    }
}

Please note: In order to run this test application without explicit administrator privileges, you need to use the URI http://localhost:<port> in this configuration file.

Credits

Special thanks to rakijah for his CSGO Game State Integration library.

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