Extend bone override capabilities (#12388)

doc/lua_api.md

@@ -7556,17 +7556,32 @@ child will follow movement and rotation of that bone.
     object.
 * `set_detach()`: Detaches object. No-op if object was not attached.
 * `set_bone_position([bone, position, rotation])`
-    * `bone`: string. Default is `""`, the root bone
-    * `position`: `{x=num, y=num, z=num}`, relative, `default {x=0, y=0, z=0}`
-    * `rotation`: `{x=num, y=num, z=num}`, default `{x=0, y=0, z=0}`
-* `get_bone_position(bone)`:
-    * returns bone parameters previously set by `set_bone_position`
-    * returns `position, rotation` of the specified bone (as vectors)
-    * note: position is relative to the object
-* `set_properties(object property table)`:
-    * set a number of object properties in the given table
-    * only properties listed in the table will be changed
-    * see the 'Object properties' section for details
+	* Shorthand for `set_bone_override(bone, {position = position, rotation = rotation:apply(math.rad)})` using absolute values.
+	* **Note:** Rotation is in degrees, not radians.
+	* **Deprecated:** Use `set_bone_override` instead.
+* `get_bone_position(bone)`: returns the previously set position and rotation of the bone
+	* Shorthand for `get_bone_override(bone).position.vec, get_bone_override(bone).rotation.vec:apply(math.deg)`.
+	* **Note:** Returned rotation is in degrees, not radians.
+	* **Deprecated:** Use `get_bone_override` instead.
+* `set_bone_override(bone, override)`
+    * `bone`: string
+    * `override`: `{ position = property, rotation = property, scale = property }` or `nil`
+        * `property`: `{ vec = vector, interpolation = 0, absolute = false}` or `nil`;
+            * `vec` is in the same coordinate system as the model, and in degrees for rotation
+        * `property = nil` is equivalent to no override on that property
+        * `absolute`: If set to `false`, the override will be relative to the animated property:
+            * Transposition in the case of `position`;
+            * Composition in the case of `rotation`;
+            * Multiplication in the case of `scale`
+        * `interpolation`: Old and new values are interpolated over this timeframe (in seconds)
+    * `override = nil` (including omission) is shorthand for `override = {}` which clears the override
+    * **Note:** Unlike `set_bone_position`, the rotation is in radians, not degrees.
+    * Compatibility note: Clients prior to 5.9.0 only support absolute position and rotation.
+      All values are treated as absolute and are set immediately (no interpolation).
+* `get_bone_override(bone)`: returns `override` in the above format
+	* **Note:** Unlike `get_bone_position`, the returned rotation is in radians, not degrees.
+* `get_bone_overrides()`: returns all bone overrides as table `{[bonename] = override, ...}`
+* `set_properties(object property table)`
 * `get_properties()`: returns a table of all object properties
 * `is_player()`: returns true for players, false otherwise
 * `get_nametag_attributes()`

src/activeobject.h

@@ -21,7 +21,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "irr_aabb3d.h"
 #include "irr_v3d.h"
+#include <quaternion.h>
 #include <string>
+#include <unordered_map>
 
 
 enum ActiveObjectType {
@@ -72,6 +74,78 @@ enum ActiveObjectCommand {
 	AO_CMD_SET_ANIMATION_SPEED
 };
 
+struct BoneOverride
+{
+	struct PositionProperty
+	{
+		v3f previous;
+		v3f vector;
+		bool absolute = false;
+		f32 interp_timer = 0;
+	} position;
+
+	v3f getPosition(v3f anim_pos) const {
+		f32 progress = dtime_passed / position.interp_timer;
+		if (progress > 1.0f || position.interp_timer == 0.0f)
+			progress = 1.0f;
+		return position.vector.getInterpolated(position.previous, progress)
+				+ (position.absolute ? v3f() : anim_pos);
+	}
+
+	struct RotationProperty
+	{
+		core::quaternion previous;
+		core::quaternion next;
+		bool absolute = false;
+		f32 interp_timer = 0;
+	} rotation;
+
+	v3f getRotationEulerDeg(v3f anim_rot_euler) const {
+		core::quaternion rot;
+
+		f32 progress = dtime_passed / rotation.interp_timer;
+		if (progress > 1.0f || rotation.interp_timer == 0.0f)
+			progress = 1.0f;
+		rot.slerp(rotation.previous, rotation.next, progress);
+		if (!rotation.absolute) {
+			core::quaternion anim_rot(anim_rot_euler * core::DEGTORAD);
+			rot = rot * anim_rot; // first rotate by anim. bone rot., then rot.
+		}
+
+		v3f rot_euler;
+		rot.toEuler(rot_euler);
+		return rot_euler * core::RADTODEG;
+	}
+
+	struct ScaleProperty
+	{
+		v3f previous;
+		v3f vector{1, 1, 1};
+		bool absolute = false;
+		f32 interp_timer = 0;
+	} scale;
+
+	v3f getScale(v3f anim_scale) const {
+		f32 progress = dtime_passed / scale.interp_timer;
+		if (progress > 1.0f || scale.interp_timer == 0.0f)
+			progress = 1.0f;
+		return scale.vector.getInterpolated(scale.previous, progress)
+				* (scale.absolute ? v3f(1) : anim_scale);
+	}
+
+	f32 dtime_passed = 0;
+
+	bool isIdentity() const
+	{
+		return !position.absolute && position.vector == v3f()
+				&& !rotation.absolute && rotation.next == core::quaternion()
+				&& !scale.absolute && scale.vector == v3f(1);
+	}
+};
+
+typedef std::unordered_map<std::string, BoneOverride> BoneOverrideMap;
+
+
 /*
 	Parent class for ServerActiveObject and ClientActiveObject
 */

src/client/content_cao.cpp

@@ -46,6 +46,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <cmath>
 #include "client/shader.h"
 #include "client/minimap.h"
+#include <quaternion.h>
 
 class Settings;
 struct ToolCapabilities;
@@ -828,7 +829,7 @@ void GenericCAO::addToScene(ITextureSource *tsrc, scene::ISceneManager *smgr)
 	updateMarker();
 	updateNodePos();
 	updateAnimation();
-	updateBonePosition();
+	updateBones(.0f);
 	updateAttachments();
 	setNodeLight(m_last_light);
 	updateMeshCulling();
@@ -1246,7 +1247,7 @@ void GenericCAO::step(float dtime, ClientEnvironment *env)
 			updatePositionRecursive(m_matrixnode);
 		m_animated_meshnode->updateAbsolutePosition();
 		m_animated_meshnode->animateJoints();
-		updateBonePosition();
+		updateBones(dtime);
 	}
 }
 
@@ -1527,19 +1528,28 @@ void GenericCAO::updateAnimationSpeed()
 	m_animated_meshnode->setAnimationSpeed(m_animation_speed);
 }
 
-void GenericCAO::updateBonePosition()
+void GenericCAO::updateBones(f32 dtime)
 {
-	if (m_bone_position.empty() || !m_animated_meshnode)
+	if (!m_animated_meshnode)
 		return;
+	if (m_bone_override.empty()) {
+		m_animated_meshnode->setJointMode(scene::EJUOR_NONE);
+		return;
+	}
 
 	m_animated_meshnode->setJointMode(scene::EJUOR_CONTROL); // To write positions to the mesh on render
-	for (auto &it : m_bone_position) {
+	for (auto &it : m_bone_override) {
 		std::string bone_name = it.first;
 		scene::IBoneSceneNode* bone = m_animated_meshnode->getJointNode(bone_name.c_str());
-		if (bone) {
-			bone->setPosition(it.second.X);
-			bone->setRotation(it.second.Y);
-		}
+		if (!bone)
+			continue;
+
+		BoneOverride &props = it.second;
+		props.dtime_passed += dtime;
+
+		bone->setPosition(props.getPosition(bone->getPosition()));
+		bone->setRotation(props.getRotationEulerDeg(bone->getRotation()));
+		bone->setScale(props.getScale(bone->getScale()));
 	}
 
 	// search through bones to find mistakenly rotated bones due to bug in Irrlicht
@@ -1550,7 +1560,7 @@ void GenericCAO::updateBonePosition()
 
 		//If bone is manually positioned there is no need to perform the bug check
 		bool skip = false;
-		for (auto &it : m_bone_position) {
+		for (auto &it : m_bone_override) {
 			if (it.first == bone->getName()) {
 				skip = true;
 				break;
@@ -1852,11 +1862,46 @@ void GenericCAO::processMessage(const std::string &data)
 		updateAnimationSpeed();
 	} else if (cmd == AO_CMD_SET_BONE_POSITION) {
 		std::string bone = deSerializeString16(is);
-		v3f position = readV3F32(is);
-		v3f rotation = readV3F32(is);
-		m_bone_position[bone] = core::vector2d<v3f>(position, rotation);
-
-		// updateBonePosition(); now called every step
+		auto it = m_bone_override.find(bone);
+		BoneOverride props;
+		if (it != m_bone_override.end()) {
+			props = it->second;
+			// Reset timer
+			props.dtime_passed = 0;
+			// Save previous values for interpolation
+			props.position.previous = props.position.vector;
+			props.rotation.previous = props.rotation.next;
+			props.scale.previous = props.scale.vector;
+		} else {
+			// Disable interpolation
+			props.position.interp_timer = 0.0f;
+			props.rotation.interp_timer = 0.0f;
+			props.scale.interp_timer = 0.0f;
+		}
+		// Read new values
+		props.position.vector = readV3F32(is);
+		props.rotation.next = core::quaternion(readV3F32(is) * core::DEGTORAD);
+		props.scale.vector = readV3F32(is); // reads past end of string on older cmds
+		if (is.eof()) {
+			// Backwards compatibility
+			props.scale.vector = v3f(1, 1, 1); // restore the scale which was not sent
+			props.position.absolute = true;
+			props.rotation.absolute = true;
+		} else {
+			props.position.interp_timer = readF32(is);
+			props.rotation.interp_timer = readF32(is);
+			props.scale.interp_timer = readF32(is);
+			u8 absoluteFlag = readU8(is);
+			props.position.absolute = (absoluteFlag & 1) > 0;
+			props.rotation.absolute = (absoluteFlag & 2) > 0;
+			props.scale.absolute = (absoluteFlag & 4) > 0;
+		}
+		if (props.isIdentity()) {
+			m_bone_override.erase(bone);
+		} else {
+			m_bone_override[bone] = props;
+		}
+		// updateBones(); now called every step
 	} else if (cmd == AO_CMD_ATTACH_TO) {
 		u16 parent_id = readS16(is);
 		std::string bone = deSerializeString16(is);

src/client/content_cao.h

@@ -104,7 +104,7 @@ private:
 	float m_animation_blend = 0.0f;
 	bool m_animation_loop = true;
 	// stores position and rotation for each bone name
-	std::unordered_map<std::string, core::vector2d<v3f>> m_bone_position;
+	BoneOverrideMap m_bone_override;
 
 	int m_attachment_parent_id = 0;
 	std::unordered_set<int> m_attachment_child_ids;
@@ -267,7 +267,7 @@ public:
 
 	void updateAnimationSpeed();
 
-	void updateBonePosition();
+	void updateBones(f32 dtime);
 
 	void processMessage(const std::string &data) override;
 

src/network/networkprotocol.h

@@ -219,9 +219,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 		"start_time" added to TOCLIENT_PLAY_SOUND
 		place_param2 type change u8 -> optional<u8>
 		[scheduled bump for 5.8.0]
+	PROTOCOL VERSION 44:
+		AO_CMD_SET_BONE_POSITION extended
+		[scheduled bump for 5.9.0]
 */
 
-#define LATEST_PROTOCOL_VERSION 43
+#define LATEST_PROTOCOL_VERSION 44
 #define LATEST_PROTOCOL_VERSION_STRING TOSTRING(LATEST_PROTOCOL_VERSION)
 
 // Server's supported network protocol range

src/script/lua_api/l_object.cpp

@@ -34,6 +34,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "server/luaentity_sao.h"
 #include "server/player_sao.h"
 #include "server/serverinventorymgr.h"
+#include "server/unit_sao.h"
 
 /*
 	ObjectRef
@@ -518,16 +519,25 @@ int ObjectRef::l_set_animation_frame_speed(lua_State *L)
 int ObjectRef::l_set_bone_position(lua_State *L)
 {
 	NO_MAP_LOCK_REQUIRED;
+
+	log_deprecated(L,"Deprecated call to set_bone_position, use set_bone_override instead");
+
 	ObjectRef *ref = checkObject<ObjectRef>(L, 1);
 	ServerActiveObject *sao = getobject(ref);
 	if (sao == nullptr)
 		return 0;
 
-	std::string bone = readParam<std::string>(L, 2, "");
-	v3f position = readParam<v3f>(L, 3, v3f(0, 0, 0));
-	v3f rotation = readParam<v3f>(L, 4, v3f(0, 0, 0));
-
-	sao->setBonePosition(bone, position, rotation);
+	std::string bone;
+	if (!lua_isnil(L, 2))
+		bone = readParam<std::string>(L, 2);
+	BoneOverride props;
+	if (!lua_isnil(L, 3))
+		props.position.vector = check_v3f(L, 3);
+	if (!lua_isnil(L, 4))
+		props.rotation.next = core::quaternion(check_v3f(L, 4) * core::DEGTORAD);
+	props.position.absolute = true;
+	props.rotation.absolute = true;
+	sao->setBoneOverride(bone, props);
 	return 0;
 }
 
@@ -535,22 +545,144 @@ int ObjectRef::l_set_bone_position(lua_State *L)
 int ObjectRef::l_get_bone_position(lua_State *L)
 {
 	NO_MAP_LOCK_REQUIRED;
+
+	log_deprecated(L,"Deprecated call to get_bone_position, use get_bone_override instead");
+
 	ObjectRef *ref = checkObject<ObjectRef>(L, 1);
 	ServerActiveObject *sao = getobject(ref);
 	if (sao == nullptr)
 		return 0;
 
 	std::string bone = readParam<std::string>(L, 2, "");
-
-	v3f position = v3f(0, 0, 0);
-	v3f rotation = v3f(0, 0, 0);
-	sao->getBonePosition(bone, &position, &rotation);
-
-	push_v3f(L, position);
-	push_v3f(L, rotation);
+	BoneOverride props = sao->getBoneOverride(bone);
+	push_v3f(L, props.position.vector);
+	v3f euler_rot;
+	props.rotation.next.toEuler(euler_rot);
+	push_v3f(L, euler_rot * core::RADTODEG);
 	return 2;
 }
 
+// set_bone_override(self, bone, override)
+int ObjectRef::l_set_bone_override(lua_State *L)
+{
+	NO_MAP_LOCK_REQUIRED;
+	ObjectRef *ref = checkObject<ObjectRef>(L, 1);
+	ServerActiveObject *sao = getobject(ref);
+	if (sao == NULL)
+		return 0;
+
+	std::string bone = readParam<std::string>(L, 2);
+
+	BoneOverride props;
+	if (lua_isnoneornil(L, 3)) {
+		sao->setBoneOverride(bone, props);
+		return 0;
+	}
+
+	auto read_prop_attrs = [L](auto &prop) {
+		lua_getfield(L, -1, "absolute");
+		prop.absolute = lua_toboolean(L, -1);
+		lua_pop(L, 1);
+
+		lua_getfield(L, -1, "interpolate");
+		if (lua_isnumber(L, -1))
+			prop.interp_timer = lua_tonumber(L, -1);
+		lua_pop(L, 1);
+	};
+
+	lua_getfield(L, 3, "position");
+	if (!lua_isnil(L, -1)) {
+		lua_getfield(L, -1, "vec");
+		if (!lua_isnil(L, -1))
+			props.position.vector = check_v3f(L, -1);
+		lua_pop(L, 1);
+
+		read_prop_attrs(props.position);
+	}
+	lua_pop(L, 1);
+
+	lua_getfield(L, 3, "rotation");
+	if (!lua_isnil(L, -1)) {
+		lua_getfield(L, -1, "vec");
+		if (!lua_isnil(L, -1))
+			props.rotation.next = core::quaternion(check_v3f(L, -1));
+		lua_pop(L, 1);
+
+		read_prop_attrs(props.rotation);
+	}
+	lua_pop(L, 1);
+
+	lua_getfield(L, 3, "scale");
+	if (!lua_isnil(L, -1)) {
+		lua_getfield(L, -1, "vec");
+		props.scale.vector = lua_isnil(L, -1) ? v3f(1) : check_v3f(L, -1);
+		lua_pop(L, 1);
+
+		read_prop_attrs(props.scale);
+	}
+	lua_pop(L, 1);
+
+	sao->setBoneOverride(bone, props);
+	return 0;
+}
+
+static void push_bone_override(lua_State *L, const BoneOverride &props)
+{
+	lua_newtable(L);
+
+	auto push_prop = [L](const char *name, const auto &prop, v3f vec) {
+		lua_newtable(L);
+		push_v3f(L, vec);
+		lua_setfield(L, -2, "vec");
+		lua_pushnumber(L, prop.interp_timer);
+		lua_setfield(L, -2, "interpolate");
+		lua_pushboolean(L, prop.absolute);
+		lua_setfield(L, -2, "absolute");
+		lua_setfield(L, -2, name);
+	};
+
+	push_prop("position", props.position, props.position.vector);
+
+	v3f euler_rot;
+	props.rotation.next.toEuler(euler_rot);
+	push_prop("rotation", props.rotation, euler_rot);
+
+	push_prop("scale", props.scale, props.scale.vector);
+
+	// leave only override table on top of the stack
+}
+
+// get_bone_override(self, bone)
+int ObjectRef::l_get_bone_override(lua_State *L)
+{
+	NO_MAP_LOCK_REQUIRED;
+	ObjectRef *ref = checkObject<ObjectRef>(L, 1);
+	ServerActiveObject *sao = getobject(ref);
+	if (sao == NULL)
+		return 0;
+
+	std::string bone = readParam<std::string>(L, 2);
+
+	push_bone_override(L, sao->getBoneOverride(bone));
+	return 1;
+}
+
+// get_bone_overrides(self)
+int ObjectRef::l_get_bone_overrides(lua_State *L)
+{
+	NO_MAP_LOCK_REQUIRED;
+	ObjectRef *ref = checkObject<ObjectRef>(L, 1);
+	ServerActiveObject *co = getobject(ref);
+	if (co == NULL)
+		return 0;
+	lua_newtable(L);
+	for (const auto &bone_pos : co->getBoneOverrides()) {
+		push_bone_override(L, bone_pos.second);
+		lua_setfield(L, -2, bone_pos.first.c_str());
+	}
+	return 1;
+}
+
 // set_attach(self, parent, bone, position, rotation, force_visible)
 int ObjectRef::l_set_attach(lua_State *L)
 {
@@ -2471,6 +2603,9 @@ luaL_Reg ObjectRef::methods[] = {
 	luamethod(ObjectRef, set_animation_frame_speed),
 	luamethod(ObjectRef, set_bone_position),
 	luamethod(ObjectRef, get_bone_position),
+	luamethod(ObjectRef, set_bone_override),
+	luamethod(ObjectRef, get_bone_override),
+	luamethod(ObjectRef, get_bone_overrides),
 	luamethod(ObjectRef, set_attach),
 	luamethod(ObjectRef, get_attach),
 	luamethod(ObjectRef, get_children),

src/script/lua_api/l_object.h

@@ -130,6 +130,15 @@ private:
 	// get_bone_position(self, bone)
 	static int l_get_bone_position(lua_State *L);
 
+	// set_bone_override(self, bone)
+	static int l_set_bone_override(lua_State *L);
+
+	// get_bone_override(self, bone)
+	static int l_get_bone_override(lua_State *L);
+
+	// get_bone_override(self)
+	static int l_get_bone_overrides(lua_State *L);
+
 	// set_attach(self, parent, bone, position, rotation)
 	static int l_set_attach(lua_State *L);
 

src/server/luaentity_sao.cpp

@@ -256,13 +256,13 @@ std::string LuaEntitySAO::getClientInitializationData(u16 protocol_version)
 	msg_os << serializeString32(getPropertyPacket()); // message 1
 	msg_os << serializeString32(generateUpdateArmorGroupsCommand()); // 2
 	msg_os << serializeString32(generateUpdateAnimationCommand()); // 3
-	for (const auto &bone_pos : m_bone_position) {
-		msg_os << serializeString32(generateUpdateBonePositionCommand(
-			bone_pos.first, bone_pos.second.X, bone_pos.second.Y)); // 3 + N
+	for (const auto &bone_override : m_bone_override) {
+		msg_os << serializeString32(generateUpdateBoneOverrideCommand(
+			bone_override.first, bone_override.second)); // 3 + N
 	}
-	msg_os << serializeString32(generateUpdateAttachmentCommand()); // 4 + m_bone_position.size
+	msg_os << serializeString32(generateUpdateAttachmentCommand()); // 4 + m_bone_override.size
 
-	int message_count = 4 + m_bone_position.size();
+	int message_count = 4 + m_bone_override.size();
 
 	for (const auto &id : getAttachmentChildIds()) {
 		if (ServerActiveObject *obj = m_env->getActiveObject(id)) {

src/server/player_sao.cpp

@@ -121,14 +121,14 @@ std::string PlayerSAO::getClientInitializationData(u16 protocol_version)
 	msg_os << serializeString32(getPropertyPacket()); // message 1
 	msg_os << serializeString32(generateUpdateArmorGroupsCommand()); // 2
 	msg_os << serializeString32(generateUpdateAnimationCommand()); // 3
-	for (const auto &bone_pos : m_bone_position) {
-		msg_os << serializeString32(generateUpdateBonePositionCommand(
-			bone_pos.first, bone_pos.second.X, bone_pos.second.Y)); // 3 + N
+	for (const auto &it : m_bone_override) {
+		msg_os << serializeString32(generateUpdateBoneOverrideCommand(
+			it.first, it.second)); // 3 + N
 	}
-	msg_os << serializeString32(generateUpdateAttachmentCommand()); // 4 + m_bone_position.size
-	msg_os << serializeString32(generateUpdatePhysicsOverrideCommand()); // 5 + m_bone_position.size
+	msg_os << serializeString32(generateUpdateAttachmentCommand()); // 4 + m_bone_override.size
+	msg_os << serializeString32(generateUpdatePhysicsOverrideCommand()); // 5 + m_bone_override.size
 
-	int message_count = 5 + m_bone_position.size();
+	int message_count = 5 + m_bone_override.size();
 
 	for (const auto &id : getAttachmentChildIds()) {
 		if (ServerActiveObject *obj = m_env->getActiveObject(id)) {

src/server/serveractiveobject.h

@@ -26,6 +26,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "itemgroup.h"
 #include "util/container.h"
 
+
 /*
 
 Some planning
@@ -167,14 +168,16 @@ public:
 	{}
 	virtual void setAnimationSpeed(float frame_speed)
 	{}
-	virtual void setBonePosition(const std::string &bone, v3f position, v3f rotation)
-	{}
-	virtual void getBonePosition(const std::string &bone, v3f *position, v3f *lotation)
+	virtual void setBoneOverride(const std::string &bone, const BoneOverride &props)
 	{}
+	virtual BoneOverride getBoneOverride(const std::string &bone)
+	{ BoneOverride props; return props; }
+	virtual const BoneOverrideMap &getBoneOverrides() const
+	{ static BoneOverrideMap rv; return rv; }
 	virtual const std::unordered_set<int> &getAttachmentChildIds() const
 	{ static std::unordered_set<int> rv; return rv; }
 	virtual ServerActiveObject *getParent() const { return nullptr; }
-	virtual ObjectProperties* accessObjectProperties()
+	virtual ObjectProperties *accessObjectProperties()
 	{ return NULL; }
 	virtual void notifyObjectPropertiesModified()
 	{}

src/server/unit_sao.cpp

@@ -76,20 +76,20 @@ void UnitSAO::setAnimationSpeed(float frame_speed)
 	m_animation_speed_sent = false;
 }
 
-void UnitSAO::setBonePosition(const std::string &bone, v3f position, v3f rotation)
+void UnitSAO::setBoneOverride(const std::string &bone, const BoneOverride &props)
 {
 	// store these so they can be updated to clients
-	m_bone_position[bone] = core::vector2d<v3f>(position, rotation);
-	m_bone_position_sent = false;
+	m_bone_override[bone] = props;
+	m_bone_override_sent = false;
 }
 
-void UnitSAO::getBonePosition(const std::string &bone, v3f *position, v3f *rotation)
+BoneOverride UnitSAO::getBoneOverride(const std::string &bone)
 {
-	auto it = m_bone_position.find(bone);
-	if (it != m_bone_position.end()) {
-		*position = it->second.X;
-		*rotation = it->second.Y;
-	}
+	auto it = m_bone_override.find(bone);
+	BoneOverride props;
+	if (it != m_bone_override.end())
+		props = it->second;
+	return props;
 }
 
 void UnitSAO::sendOutdatedData()
@@ -109,11 +109,11 @@ void UnitSAO::sendOutdatedData()
 		m_messages_out.emplace(getId(), true, generateUpdateAnimationSpeedCommand());
 	}
 
-	if (!m_bone_position_sent) {
-		m_bone_position_sent = true;
-		for (const auto &bone_pos : m_bone_position) {
-			m_messages_out.emplace(getId(), true, generateUpdateBonePositionCommand(
-				bone_pos.first, bone_pos.second.X, bone_pos.second.Y));
+	if (!m_bone_override_sent) {
+		m_bone_override_sent = true;
+		for (const auto &bone_pos : m_bone_override) {
+			m_messages_out.emplace(getId(), true, generateUpdateBoneOverrideCommand(
+				bone_pos.first, bone_pos.second));
 		}
 	}
 
@@ -275,16 +275,25 @@ std::string UnitSAO::generateUpdateAttachmentCommand() const
 	return os.str();
 }
 
-std::string UnitSAO::generateUpdateBonePositionCommand(
-		const std::string &bone, const v3f &position, const v3f &rotation)
+std::string UnitSAO::generateUpdateBoneOverrideCommand(
+		const std::string &bone, const BoneOverride &props)
 {
 	std::ostringstream os(std::ios::binary);
 	// command
 	writeU8(os, AO_CMD_SET_BONE_POSITION);
 	// parameters
 	os << serializeString16(bone);
-	writeV3F32(os, position);
-	writeV3F32(os, rotation);
+	writeV3F32(os, props.position.vector);
+	v3f euler_rot;
+	props.rotation.next.toEuler(euler_rot);
+	writeV3F32(os, euler_rot * core::RADTODEG);
+	writeV3F32(os, props.scale.vector);
+	writeF32(os, props.position.interp_timer);
+	writeF32(os, props.rotation.interp_timer);
+	writeF32(os, props.scale.interp_timer);
+	writeU8(os, (props.position.absolute & 1) << 0
+	          | (props.rotation.absolute & 1) << 1
+	          | (props.scale.absolute & 1) << 2);
 	return os.str();
 }
 

src/server/unit_sao.h

@@ -70,8 +70,10 @@ public:
 	void setAnimationSpeed(float frame_speed);
 
 	// Bone position
-	void setBonePosition(const std::string &bone, v3f position, v3f rotation);
-	void getBonePosition(const std::string &bone, v3f *position, v3f *rotation);
+	void setBoneOverride(const std::string &bone, const BoneOverride &props);
+	BoneOverride getBoneOverride(const std::string &bone);
+	const std::unordered_map<std::string, BoneOverride>
+			&getBoneOverrides() const { return m_bone_override; };
 
 	// Attachments
 	ServerActiveObject *getParent() const;
@@ -100,8 +102,8 @@ public:
 			const v3f &velocity, const v3f &acceleration, const v3f &rotation,
 			bool do_interpolate, bool is_movement_end, f32 update_interval);
 	std::string generateSetPropertiesCommand(const ObjectProperties &prop) const;
-	static std::string generateUpdateBonePositionCommand(const std::string &bone,
-			const v3f &position, const v3f &rotation);
+	static std::string generateUpdateBoneOverrideCommand(
+			const std::string &bone, const BoneOverride &props);
 	void sendPunchCommand();
 
 protected:
@@ -117,7 +119,7 @@ protected:
 	ObjectProperties m_prop;
 
 	// Stores position and rotation for each bone name
-	std::unordered_map<std::string, core::vector2d<v3f>> m_bone_position;
+	std::unordered_map<std::string, BoneOverride> m_bone_override;
 
 	int m_attachment_parent_id = 0;
 
@@ -139,7 +141,7 @@ private:
 	bool m_animation_speed_sent = false;
 
 	// Bone positions
-	bool m_bone_position_sent = false;
+	bool m_bone_override_sent = false;
 
 	// Attachments
 	std::unordered_set<int> m_attachment_child_ids;