Changelog

All notable changes to this package will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[1.0.0] - 2026-10-19

Added

  • Added documentation to help you install, configure, and use the Steamworks API package.

[1.0.0-pre.2] - 2026-09-26

Added

  • SteamDispatchMode parameter on SteamAPI.InitEx/Init and GameServer.InitEx, to choose who reads each pipe's callbacks
  • SteamCallbacks.RunFrameCallbacks, SubmitCallback and DeliverQueuedCallbacks, for reading an ExternalPoll pipe on your own schedule

Changed

  • Renamed namespaces from Unity.Steam.Interop* to Unity.Steamworks.*: Unity.Steamworks.Interop, Unity.Steamworks.Runtime, Unity.Steamworks.Editor, and matching test namespaces.
  • Renamed SteamCallbacks.PumpIntervalMilliseconds to PollIntervalMilliseconds

Added

  • New Steamworks SDK importer in Project Settings > Steamworks
  • Generated SteamworksRuntimeSettings.cs in its own Unity.Steamworks.Settings assembly under Assets/Plugins/Steamworks/Settings, exposing the configured app id to game code and calling SteamAPI.RestartAppIfNecessary at player startup when the ENABLE_RESTART_STEAM_APP_HOOK scripting define is set and an App Id is configured

Changed

  • SDK importer now only pulls in necessary native libraries
  • SteamworksSettings and SteamAppIdFileCreation moved to Unity.Steamworks.Editor; settings are stored in ProjectSettings/SteamworksSettings.asset and no longer ship with a build
  • A missing SDK is reported in Project Settings > Steamworks and by a console warning on editor load listing each library's state
  • SDK detection recognizes a correctly configured Steam native library anywhere in the project, not just under Assets/Plugins/Steamworks
  • The editor logs when the SDK is imported or detected on load

Removed

  • Public API for Steamworks SDK management has been removed
  • Unity.Steamworks.Runtime.SteamworksSettings and its Resources asset; read SteamworksRuntimeSettings instead
  • CGameID.EGameIDType.k_EGameIDTypeP2P and CGameID.IsP2PFile, which the SDK does not define
  • The ISteamNetworkingConnectionSignaling/ISteamNetworkingSignalingRecvContext structs, which could not work against Valve's library; ConnectP2PCustomSignaling and ReceivedP2PCustomSignal now take these objects as IntPtr

Fixed

  • SteamNetworkingConfigValue_t.SetString tags the value as a string option, not a pointer
  • gameserveritem_t includes m_nCurrentFriendCount and m_nTotalFriendCount
  • CGameID.AppID() and ModID() match the SDK for shortcuts
  • SteamNetworkingIPAddr works as a Dictionary/HashSet key
  • SteamNetworkingIdentity getters no longer read memory the GC may have moved
  • Matchmaking response sinks no longer let an exception reach native code when disposed during a callback, and AddFriendToList reads its bool correctly under IL2CPP

[1.0.0-pre.1] - 2026-09-04

Added

  • *Async wrappers returning Task<TCallResult> for every Steamworks method that produces a call result.
  • InteropHelpers.RequiredClient / RequiredGameServer, returning a generated wrapper's Steam interface pointer and throwing when it is null.

Changed

  • Generated wrappers now resolve and check their Steam interface pointer directly instead of a separate client-availability check.
  • Steam interfaces now resolve lazily on first use instead of eagerly in Init().
  • Native bool values now marshal with UnmanagedType.U1 instead of UnmanagedType.I1.

Removed

  • Android support.

Fixed

  • A null interface pointer no longer crashes the process; it now throws InvalidOperationException instead.
  • An interface not yet resolvable at Init() time (e.g. ISteamInput) no longer stays permanently unusable.

[0.2.0-exp.1] - 2026-08-07

Changed

  • A newly created SteamworksSettings asset no longer defaults its app id to 480 (Steam's public test app, Spacewar). The default is now unset, so a project that never configures one fails rather than initializing Steam as somebody else's game. Existing assets keep their serialized value and are unaffected.

Added

  • The editor now writes the steam_appid.txt that Steam's native library reads, from the app id in the settings asset, when the project does not already have one. Previously this was only available as a button on the Project Settings > Steamworks page, so a project could look correctly configured and still fail to initialize.
  • -steamworksAppId=<id> on the editor command line, for a project created by tooling and therefore without settings of its own. It takes precedence over an app id the project already set, and reports the difference. A project with neither an asset nor the switch is left untouched.

[0.1.0-exp.1] - 2026-07-31

This is the first release of Steamworks API wrapper.

Experimental first release: per-interface flat wrappers generated from Steamworks SDK 1.65 (ISteamUser, ISteamFriends, ISteamUserStats, ...), callback structs and constants, and a hand-written lifecycle and dispatch runtime with typed callback subscriptions and async call-result support. Includes the "Hello Steam" sample.

Every public type and member carries an XML documentation comment — a summary, a <param> per parameter, a <typeparam> per type parameter and a <returns> for every non-void return. Where the SDK's headers documented a declaration, that text is what the summary says; the generator supplies one describing the member otherwise. Package documentation lives in Documentation~/index.md.