BP_SPM_Library Functions

BP_SPM_Library (at Content/SteamPartyMenu/Blueprints/Libraries/BP_SPM_Library) is the main Blueprint Function Library: pure/static helpers callable from any graph. Reference by group:

Component Getters

Function	Returns
GetPartyManager	The BPC_PartyManager from the player controller. Your #1 entry point from widgets.
GetPartyManagerSoftRef	Same, as a soft reference (safe during travel).
GetMatchmaker	The BPC_Matchmaking component (work in progress, testing only).
Get Player Data	The BPC_PlayerData from the player state.
Get Player Data from Player State	Same, from an explicit PlayerState input (for remote players in match).
GetCustomizationComponent	The BPC_CharacterCustomization from an actor.

Lobby & Steam Helpers

Function	Purpose
Is In Lobby?	Whether the local player is currently in a lobby.
Get Joined Lobby	Current lobby ID (validated).
Get Joined SIK Session	Current SIK session, if any.
IsLocalUserLobbyOwner	Is the local player the party host? Gates all host-only UI/logic.
IsUserLobbyOwner	Is a specific user the host?
IsSameSteamID / Compare Steam ID's	Steam ID equality (handles struct vs int64 forms).
Get Player Cloud Data	Reads a cloud data value for a player by key.
Set Saved Member Lobby Data	Writes the local player's saved data (skin etc.) into lobby member data.
PersonaState Enum to String / LobbyType Enum to String	Display helpers for Steam enums.

Game Server State

Function	Purpose
SetGameServerState / GetGameServerState	Write/read E_GameServerState on a lobby. See SIK Utility Functions.

Maps & Travel

Function	Purpose
Get Open Level from Map Name	Resolves a MapsDataAsset soft world reference from the map name stored in lobby data.
GetTravelStringFromMapString	Map name → console travel string.
Get Last Map Used / Get Last Gamemode Used / Get Last Party Size Used	Read the host's previously used match settings from saved data (used as defaults when creating a party).

Settings

Function	Purpose
Get Current Set Game Settings	Currently applied graphics settings as S_GraphicsSettings.
IsSavedGraphicsSettingsDifferent?	Compares saved vs applied settings (drives the Keep Current / Load Saved dialog).
Set Player Graphics Settings / Set Default Graphics Settings	Apply graphics settings.
ApplyAudioVolumeSettings	Apply saved volumes to the SPM sound classes.

Characters

Function	Purpose
Get Skin Mesh with Anim	Resolves skin type + variation keys into (soft) mesh + anim BP via the CharacterDataAsset list.
Reset Main Spot Character Skin from Save	Reapplies the locally saved skin to the local avatar.

Input & UI

Function	Purpose
Set Input Mode Custom	Wrapper for switching Game / UI / GameAndUI input modes consistently.
ReturnFocusToWidget	Restores keyboard focus after closing popups (important for Escape key handling).
IsPIEMode	True in PIE. Used to branch around Steam-only features when testing in editor.

Matchmaking String Utilities

Preference-comparison helpers used by the matchmaking component (work in progress):

Function	Purpose
Convert Session Settings	Converts settings into the SIK session settings format.
ParseCommaSeparatedString	Splits a preference string into items.
StringContainsAllItems / StringItemsExactMatch	Set comparison of preference items.
ArePreferencesMatching / ArePreferencesMatchingDetailed	Full preference compatibility check between two parties (detailed variant reports which preference failed).

Other Libraries

Library	Functions
BP_HUD_Library	Get HUD Manager: returns BPC_PlayerHUD via BPI_HudManagerInterface.
BPML_SPM_Widgets (widget helpers)	Get Validated Lobby ID, Load and Set Texture 2D Asset, Load And Play Sound 2D, Get Steam User Data (persona name + avatar for a Steam ID).
BPML_Actors	LoadAndSetSkeletalMesh, LoadAndSetStaticMesh: async soft-reference loaders for actors.
BPML_Components	LoadAndSetSkeletalMesh, LoadMaterialInstance, LoadMultipleSoftObjectAssets, LoadAndSetAnimInstance, ValidateAllMemberLobbyData.