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physics: disable gravity when server sends SMSG_MOVE_GRAVITY_DISABLE

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SMSG_MOVE_GRAVITY_DISABLE/ENABLE now correctly set/clear the LEVITATING
movement flag instead of passing flag=0. GameHandler::isGravityDisabled()
reads the LEVITATING bit and is synced to CameraController each frame.

When gravity is disabled the physics loop bleeds off downward velocity
and skips gravity accumulation, so Levitate and similar effects actually
float the player rather than letting them fall through the world.
This commit is contained in:
Kelsi 2026-03-10 13:07:34 -07:00
parent dd6f6d1174
commit f2337aeaa7
5 changed files with 19 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

3
include/game/game_handler.hpp
View file

@ -1155,6 +1155,9 @@ public:
bool isPlayerRooted() const {
return (movementInfo.flags & static_cast<uint32_t>(MovementFlags::ROOT)) != 0;
}
bool isGravityDisabled() const {
return (movementInfo.flags & static_cast<uint32_t>(MovementFlags::LEVITATING)) != 0;
}
void dismount();
// Taxi / Flight Paths

3
include/rendering/camera_controller.hpp
View file

@ -94,6 +94,7 @@ public:
void setRunSpeedOverride(float speed) { runSpeedOverride_ = speed; }
void setMovementRooted(bool rooted) { movementRooted_ = rooted; }
bool isMovementRooted() const { return movementRooted_; }
void setGravityDisabled(bool disabled) { gravityDisabled_ = disabled; }
void setMounted(bool m) { mounted_ = m; }
void setMountHeightOffset(float offset) { mountHeightOffset_ = offset; }
void setExternalFollow(bool enabled) { externalFollow_ = enabled; }
@ -272,6 +273,8 @@ private:
float runSpeedOverride_ = 0.0f;
// Server-driven root state: when true, block all horizontal movement input.
bool movementRooted_ = false;
// Server-driven gravity disable (levitate/hover): skip gravity accumulation.
bool gravityDisabled_ = false;
bool mounted_ = false;
float mountHeightOffset_ = 0.0f;
bool externalMoving_ = false;

1
src/core/application.cpp
View file

@ -1010,6 +1010,7 @@ void Application::update(float deltaTime) {
if (renderer && gameHandler && renderer->getCameraController()) {
renderer->getCameraController()->setRunSpeedOverride(gameHandler->getServerRunSpeed());
renderer->getCameraController()->setMovementRooted(gameHandler->isPlayerRooted());
renderer->getCameraController()->setGravityDisabled(gameHandler->isGravityDisabled());
}
bool onTaxi = gameHandler &&

6
src/game/game_handler.cpp
View file

@ -5579,10 +5579,12 @@ void GameHandler::handlePacket(network::Packet& packet) {
// ---- Player movement flag changes (server-pushed) ----
case Opcode::SMSG_MOVE_GRAVITY_DISABLE:
handleForceMoveFlagChange(packet, "GRAVITY_DISABLE", Opcode::CMSG_MOVE_GRAVITY_DISABLE_ACK, 0, true);
handleForceMoveFlagChange(packet, "GRAVITY_DISABLE", Opcode::CMSG_MOVE_GRAVITY_DISABLE_ACK,
static_cast<uint32_t>(MovementFlags::LEVITATING), true);
break;
case Opcode::SMSG_MOVE_GRAVITY_ENABLE:
handleForceMoveFlagChange(packet, "GRAVITY_ENABLE", Opcode::CMSG_MOVE_GRAVITY_ENABLE_ACK, 0, true);
handleForceMoveFlagChange(packet, "GRAVITY_ENABLE", Opcode::CMSG_MOVE_GRAVITY_ENABLE_ACK,
static_cast<uint32_t>(MovementFlags::LEVITATING), false);
break;
case Opcode::SMSG_MOVE_LAND_WALK:
handleForceMoveFlagChange(packet, "LAND_WALK", Opcode::CMSG_MOVE_WATER_WALK_ACK, 0, false);

10
src/rendering/camera_controller.cpp
View file

@ -717,8 +717,14 @@ void CameraController::update(float deltaTime) {
jumpBufferTimer -= physicsDeltaTime;
coyoteTimer -= physicsDeltaTime;
// Apply gravity
verticalVelocity += gravity * physicsDeltaTime;
// Apply gravity (skip when server has disabled gravity, e.g. Levitate spell)
if (gravityDisabled_) {
// Float in place: bleed off any downward velocity, allow upward to decay slowly
if (verticalVelocity < 0.0f) verticalVelocity = 0.0f;
else verticalVelocity *= std::max(0.0f, 1.0f - 3.0f * physicsDeltaTime);
} else {
verticalVelocity += gravity * physicsDeltaTime;
}
targetPos.z += verticalVelocity * physicsDeltaTime;
}
} else {