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feat(moving platform): SetCurrentPath puts a mover on a path

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LWOMovingPlatformComponent::SetCurrentPath (0x00d0f570, the SetCurrentPath game message of 0x00d0f5d0): the path, its starting waypoint and direction, then the subcomponents are made anew (SetupPlatform 0x00ccea50) and the mover takes the path at that waypoint. The path is written to the clients once more, whose component sets it the same way (Deserialize 0x00c88000), and the reverse flag of the path is no longer always written false.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Aaron Kimbrell
2026-11-10 13:36:25 -06:00
parent c826db94f5
commit 275243cf86
3 changed files with 112 additions and 11 deletions
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58
dGame/dComponents/MovingPlatformComponent.cpp
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@@ -166,16 +166,10 @@ void MovingPlatformComponent::LoadConfigData() {
LOG("Path not found: %s", pathName.c_str());
}
// LWOPlatform::SetupPath: a mover is at its attached_path_start waypoint, stopped (12, as live constructed movers
// nothing had started). Unless startPathingOnLoad is false it then waits the waypoint's wait and leaves (live: 9).
if (IsMover()) {
auto* const mover = GetMoverSubComponent();
mover->mTimeBased = m_Path->movingPlatform.timeBasedMovement != 0;
const auto start = m_Parent->HasVar(u"attached_path_start") ? m_Parent->GetVar<int32_t>(u"attached_path_start") : 0;
m_StartWaypoint = start >= 0 && static_cast<size_t>(start) < m_Path->pathWaypoints.size() ? start : 0;
MoverProcessStateChange(m_StartWaypoint);
const bool startOnLoad = !m_Parent->HasVar(u"startPathingOnLoad") || m_Parent->GetVar<bool>(u"startPathingOnLoad");
if (startOnLoad) MoverResumeTravelling();
SetupMoverPath();
} else if (m_MoverSubComponentType == eMoverSubComponentType::rotater) {
// LWOPlatformRotator: it only spins (rotX/rotY/rotZ at rate, its own path never arrives anywhere: its
// HandleStoppedLogic 0x00bdc660 only keeps the angular velocity), while travelling
@@ -188,6 +182,46 @@ void MovingPlatformComponent::LoadConfigData() {
if (simplePhysics && !m_Parent->HasVar(u"motionType")) simplePhysics->SetPhysicsMotionState(SimplePhysicsComponent::MOTION_TYPE_KEYFRAMED);
}
// LWOPlatform::SetupPath 0x00c17d10: a mover is at its starting waypoint, stopped (12, as live constructed movers nothing
// had started). Unless startPathingOnLoad is false it then waits the waypoint's wait and leaves (live: 9).
void MovingPlatformComponent::SetupMoverPath() {
auto* const mover = GetMoverSubComponent();
mover->mTimeBased = m_Path->movingPlatform.timeBasedMovement != 0;
mover->mInReverse = m_PathReverse;
MoverProcessStateChange(m_StartWaypoint);
const bool startOnLoad = !m_Parent->HasVar(u"startPathingOnLoad") || m_Parent->GetVar<bool>(u"startPathingOnLoad");
if (startOnLoad) MoverResumeTravelling();
}
// LWOMovingPlatformComponent::SetCurrentPath 0x00d0f570 (the SetCurrentPath game message, 0x00d0f5d0): the path, the
// waypoint it starts at and its direction, then SetupPlatform 0x00ccea50 makes the subcomponents anew and a mover takes
// the path. Live wrote the path to the clients with the mover (the GF shooting gallery's targets), whose
// LWOMovingPlatformComponent::Deserialize 0x00c88000 does the same there.
bool MovingPlatformComponent::SetCurrentPath(const std::string& pathName, const uint32_t startPoint, const bool reverse) {
m_PathName = GeneralUtils::ASCIIToUTF16(pathName);
m_Path = Game::zoneManager->GetZone()->GetPath(pathName);
m_PathReverse = reverse;
m_DirtyPath = true;
m_PathingStopped = false;
for (auto& subComponent : m_SubComponents) {
if (subComponent->GetType() == eMoverSubComponentType::mover) subComponent = std::make_unique<MoverSubComponent>(m_Parent->GetPosition());
else if (subComponent->GetType() == eMoverSubComponentType::rotater) subComponent = std::make_unique<RotatorSubComponent>(m_Parent->GetPosition());
}
const bool mover = IsMover();
if (mover) {
m_StartWaypoint = static_cast<size_t>(startPoint) < m_Path->pathWaypoints.size() ? startPoint : 0;
SetupMoverPath();
MoveObject();
} else {
m_StartWaypoint = startPoint;
if (m_Path == nullptr) LOG("Cannot setup platform on path %s", pathName.c_str());
}
Game::entityManager->SerializeEntity(m_Parent);
return mover;
}
MovingPlatformComponent::~MovingPlatformComponent() = default;
void MovingPlatformComponent::Serialize(RakNet::BitStream& outBitStream, bool bIsInitialUpdate) {
@@ -210,11 +244,13 @@ void MovingPlatformComponent::Serialize(RakNet::BitStream& outBitStream, bool bI
// LWOMovingPlatformComponent::Deserialize: whether subcomponents follow, whether the path changed (then whether
// there is one: its name, starting waypoint and reverse), then the subcomponents. Live wrote the path with the
// construction and the mover's state with every serialization.
// construction and the mover's state with every serialization; a path set later (SetCurrentPath) is written once.
outBitStream.Write<bool>(true);
outBitStream.Write(bIsInitialUpdate);
if (bIsInitialUpdate) {
const bool writePath = bIsInitialUpdate || m_DirtyPath;
outBitStream.Write(writePath);
if (writePath) {
if (!bIsInitialUpdate) m_DirtyPath = false;
const auto hasPath = !m_PathName.empty() && m_Path != nullptr;
outBitStream.Write(hasPath);
if (hasPath) {
@@ -223,7 +259,7 @@ void MovingPlatformComponent::Serialize(RakNet::BitStream& outBitStream, bool bI
outBitStream.Write<uint16_t>(c);
}
outBitStream.Write<uint32_t>(m_StartWaypoint);
outBitStream.Write<bool>(false);
outBitStream.Write<bool>(m_PathReverse);
}
}