rapier

A JavaScript Dota 2 (Source 2) replay parsing library.

Rapier is a Dota 2 replay parsing library supporting Source 2 replays written in JavaScript.

It will throw (exceptions) if incorrectly used. :)

Why JavaScript?

• Potential for in-browser parsing (isomorphic design)
• No JS replay parsing library yet
• Makes the YASP stack 100% JavaScript

API

• Rapier is designed to offer a very simple API.
• Users simply attach event listeners with the names of the protobuf messages they're interested in.
• Properties such as string tables, game event descriptors, and id->string mappings are exposed to allow the user to interpret the message.

Event Overview

• DEM messages. The basic building block of the replay.
  • CDemoPacket, CDemoFullPacket, CDemoSignonPacket. These messages contain one or more packets.
    • Packets. Contain most of the interesting data in the replay.
      • User Messages. These include all chat.
      • Dota User Messages. These include objectives, map pings, and actions.
      • Game Events. These come in several flavors and their content/structure are interpreted by using the game event descriptors (available to the user)
        • Combat Log. Combat log entries are a type of game event. Some fields require the use of string tables (available to the user) to translate a number to a useful string ("npc_dota_hero_furion").
      • Packet Entities.
  • CDemoFileInfo. This includes an end-of-game summary.
  • CDemoSpawnGroups.
  • CDemoSaveGames.

Usage

• Node.js: npm install rapier
• Browser: <script src="./build/rapier.js"></script> (you can grab the file and host it anywhere)

Examples

Examples of server and client side parsing can be found in examples