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Get available levels; Getters and Setters for types on actors & static meshes #364

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7d57182
First attempt at actor re-labeling
jasonashton Jan 8, 2026
6d6cf9a
Add Set Component Semantic Id
jasonashton Jan 8, 2026
5142ba1
Change class id for actor types, not individual actors
jasonashton Jan 8, 2026
e55efee
Add Actors Near Position RPC
jasonashton Jan 12, 2026
6b553a8
add rpc to get available levels
jasonashton Jan 13, 2026
7ef9a6a
Get and Set static mesh semantic IDs
jasonashton Jan 14, 2026
fe0da5e
cleanup
jasonashton Jan 14, 2026
110515f
Runtime pointer fix
jasonashton Jan 15, 2026
4506865
low memory package option
jasonashton Jan 21, 2026
e91a1c7
Evict frame when falling behind
jasonashton Jan 21, 2026
8702754
Pass FInstanceSemanticIdPair by value to prevent segfault
jasonashton Jan 21, 2026
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24 changes: 23 additions & 1 deletion Scripts/Package.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,14 @@ PROJECT_ROOT=$("$SCRIPT_DIR"/FindProjectRoot.sh)
cd "$PROJECT_ROOT"
PROJECT_NAME=$(find . -maxdepth 1 -name "*.uproject" -exec basename {} .uproject \;)

# Check for low memory mode flag
LOW_MEMORY_MODE=false
for arg in "$@"; do
if [[ "$arg" == "--low-memory" ]]; then
LOW_MEMORY_MODE=true
fi
done

UNREAL_ENGINE_PATH=$("$SCRIPT_DIR"/FindUnreal.sh)

FIND_UPROJECT() {
Expand Down Expand Up @@ -134,8 +142,22 @@ if [ "$TEMPOROS_ENABLED" = "true" ]; then
PACKAGE_COMMAND="$PACKAGE_COMMAND -ScriptDir=\"$PROJECT_ROOT/Plugins/Tempo/TempoROS/Scripts\""
fi

# Add low memory options if requested
if [ "$LOW_MEMORY_MODE" = "true" ]; then
PACKAGE_COMMAND="$PACKAGE_COMMAND -CookPartialGC -NoXGE -AdditionalCookerOptions=\"-cookprocesscount=1\""
echo "Low memory mode enabled: single cook process, partial GC, no XGE"
fi

# Filter out our custom flags before passing to UAT
PASSTHROUGH_ARGS=()
for arg in "$@"; do
if [[ "$arg" != "--low-memory" ]]; then
PASSTHROUGH_ARGS+=("$arg")
fi
done

# Execute the command with any additional arguments
eval "$PACKAGE_COMMAND \"\$@\""
eval "$PACKAGE_COMMAND" "${PASSTHROUGH_ARGS[@]}"

# Copy cook metadata (including chunk manifests) to the package directory
if [[ "$TARGET_PLATFORM" = "Win64" ]]; then
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34 changes: 34 additions & 0 deletions TempoCore/Source/TempoCore/Private/TempoCoreServiceSubsystem.cpp
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Expand Up @@ -8,13 +8,16 @@

#include "TempoCore/TempoCore.grpc.pb.h"

#include "AssetRegistry/AssetRegistryModule.h"
#include "GameFramework/GameMode.h"
#include "Kismet/GameplayStatics.h"

using TempoCoreService = TempoCore::TempoCoreService;
using TempoCoreAsyncService = TempoCore::TempoCoreService::AsyncService;
using LoadLevelRequest = TempoCore::LoadLevelRequest;
using CurrentLevelResponse = TempoCore::CurrentLevelResponse;
using GetAvailableLevelsRequest = TempoCore::GetAvailableLevelsRequest;
using AvailableLevelsResponse = TempoCore::AvailableLevelsResponse;
using SetMainViewportRenderEnabledRequest = TempoCore::SetMainViewportRenderEnabledRequest;
using SetControlModeRequest = TempoCore::SetControlModeRequest;

Expand All @@ -24,6 +27,7 @@ void UTempoCoreServiceSubsystem::RegisterScriptingServices(FTempoScriptingServer
SimpleRequestHandler(&TempoCoreAsyncService::RequestLoadLevel, &UTempoCoreServiceSubsystem::LoadLevel),
SimpleRequestHandler(&TempoCoreAsyncService::RequestFinishLoadingLevel, &UTempoCoreServiceSubsystem::FinishLoadingLevel),
SimpleRequestHandler(&TempoCoreAsyncService::RequestGetCurrentLevelName, &UTempoCoreServiceSubsystem::GetCurrentLevelName),
SimpleRequestHandler(&TempoCoreAsyncService::RequestGetAvailableLevels, &UTempoCoreServiceSubsystem::GetAvailableLevels),
SimpleRequestHandler(&TempoCoreAsyncService::RequestQuit, &UTempoCoreServiceSubsystem::Quit),
SimpleRequestHandler(&TempoCoreAsyncService::RequestSetMainViewportRenderEnabled, &UTempoCoreServiceSubsystem::SetRenderMainViewportEnabled),
SimpleRequestHandler(&TempoCoreAsyncService::RequestSetControlMode, &UTempoCoreServiceSubsystem::SetControlMode)
Expand Down Expand Up @@ -109,6 +113,36 @@ void UTempoCoreServiceSubsystem::GetCurrentLevelName(const TempoScripting::Empty
ResponseContinuation.ExecuteIfBound(Response, grpc::Status_OK);
}

void UTempoCoreServiceSubsystem::GetAvailableLevels(const GetAvailableLevelsRequest& Request, const TResponseDelegate<AvailableLevelsResponse>& ResponseContinuation) const
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@jasonashton jasonashton Jan 15, 2026

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This really just gets any assets at a path. Not sure if we should add more filtering to truly get all levels or make it a more generic RPC

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@pete-tempo pete-tempo Jan 15, 2026

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I mean I think this RPC would be very useful but it shouldn't have a name specific to levels. We could have both and they could share a helper. Is it possible to find only levels? Does the umap extension help?

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@jasonashton jasonashton Jan 15, 2026

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I can make it a more generic RPC, it does look like there's a way to filter by levels and add a more specific RPC, or we can filter client side maybe by .umap

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@pete-tempo pete-tempo Jan 16, 2026

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I think two RPCs, one for levels and one for all non-level assets would be best. I don't really think of levels as "assets"

{
AvailableLevelsResponse Response;

IAssetRegistry& AssetRegistry = FModuleManager::LoadModuleChecked<FAssetRegistryModule>("AssetRegistry").Get();

// Use provided search path or default to /Game/
FString SearchPath = UTF8_TO_TCHAR(Request.search_path().c_str());
if (SearchPath.IsEmpty())
{
SearchPath = TEXT("/Game");
}

FARFilter Filter;
Filter.ClassPaths.Add(UWorld::StaticClass()->GetClassPathName());
Filter.PackagePaths.Add(*SearchPath);
Filter.bRecursivePaths = true;

TArray<FAssetData> AssetList;
AssetRegistry.GetAssets(Filter, AssetList);

for (const FAssetData& Asset : AssetList)
{
FString LevelPath = Asset.PackageName.ToString();
Response.add_levels(TCHAR_TO_UTF8(*LevelPath));
}

ResponseContinuation.ExecuteIfBound(Response, grpc::Status_OK);
}

void UTempoCoreServiceSubsystem::Quit(const TempoScripting::Empty& Request, const TResponseDelegate<TempoScripting::Empty>& ResponseContinuation) const
{
RequestEngineExit(TEXT("TempoCore API received quit request"));
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10 changes: 10 additions & 0 deletions TempoCore/Source/TempoCore/Public/TempoCore.proto
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Expand Up @@ -21,6 +21,14 @@ message CurrentLevelResponse {
string level = 1;
}

message GetAvailableLevelsRequest {
string search_path = 1; // e.g. "/Game/Maps" - empty string searches /Game/
}

message AvailableLevelsResponse {
repeated string levels = 1;
}

message SetMainViewportRenderEnabledRequest {
bool enabled = 1;
}
Expand All @@ -36,6 +44,8 @@ service TempoCoreService {

rpc GetCurrentLevelName(TempoScripting.Empty) returns (CurrentLevelResponse);

rpc GetAvailableLevels(GetAvailableLevelsRequest) returns (AvailableLevelsResponse);

rpc Quit(TempoScripting.Empty) returns (TempoScripting.Empty);

rpc SetMainViewportRenderEnabled(SetMainViewportRenderEnabledRequest) returns (TempoScripting.Empty);
Expand Down
4 changes: 4 additions & 0 deletions TempoCore/Source/TempoCore/Public/TempoCoreServiceSubsystem.h
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Expand Up @@ -19,6 +19,8 @@ namespace TempoCore
{
class LoadLevelRequest;
class CurrentLevelResponse;
class GetAvailableLevelsRequest;
class AvailableLevelsResponse;
class SetMainViewportRenderEnabledRequest;
class SetControlModeRequest;
}
Expand All @@ -41,6 +43,8 @@ class TEMPOCORE_API UTempoCoreServiceSubsystem : public UTempoGameInstanceSubsys

void GetCurrentLevelName(const TempoScripting::Empty& Request, const TResponseDelegate<TempoCore::CurrentLevelResponse>& ResponseContinuation);

void GetAvailableLevels(const TempoCore::GetAvailableLevelsRequest& Request, const TResponseDelegate<TempoCore::AvailableLevelsResponse>& ResponseContinuation) const;

void Quit(const TempoScripting::Empty& Request, const TResponseDelegate<TempoScripting::Empty>& ResponseContinuation) const;

void SetDeferBeginPlay(bool bDeferBeginPlayIn) { bDeferBeginPlay = bDeferBeginPlayIn; }
Expand Down
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