#3857 pick new and updated LEAP functions from develop branch

5 files changed, 371 insertions, 76 deletions

diff --git a/indra/newview/llagentlistener.cpp b/indra/newview/llagentlistener.cpp
index 0c120ae01d..5ddb87558a 100644
--- a/indra/newview/llagentlistener.cpp
+++ b/indra/newview/llagentlistener.cpp
@@ -31,19 +31,25 @@
 #include "llagentlistener.h"
 
 #include "llagent.h"
+#include "llagentcamera.h"
+#include "llavatarname.h"
+#include "llavatarnamecache.h"
 #include "llvoavatar.h"
 #include "llcommandhandler.h"
+#include "llinventorymodel.h"
 #include "llslurl.h"
 #include "llurldispatcher.h"
+#include "llviewercontrol.h"
 #include "llviewernetwork.h"
 #include "llviewerobject.h"
 #include "llviewerobjectlist.h"
 #include "llviewerregion.h"
+#include "llvoavatarself.h"
 #include "llsdutil.h"
 #include "llsdutil_math.h"
 #include "lltoolgrab.h"
 #include "llhudeffectlookat.h"
-#include "llagentcamera.h"
+#include "llviewercamera.h"
 
 LLAgentListener::LLAgentListener(LLAgent &agent)
   : LLEventAPI("LLAgent",
@@ -69,13 +75,6 @@ LLAgentListener::LLAgentListener(LLAgent &agent)
     add("resetAxes",
         "Set the agent to a fixed orientation (optionally specify [\"lookat\"] = array of [x, y, z])",
         &LLAgentListener::resetAxes);
-    add("getAxes",
-        "Obsolete - use getPosition instead\n"
-        "Send information about the agent's orientation on [\"reply\"]:\n"
-        "[\"euler\"]: map of {roll, pitch, yaw}\n"
-        "[\"quat\"]:  array of [x, y, z, w] quaternion values",
-        &LLAgentListener::getAxes,
-        LLSDMap("reply", LLSD()));
     add("getPosition",
         "Send information about the agent's position and orientation on [\"reply\"]:\n"
         "[\"region\"]: array of region {x, y, z} position\n"
@@ -87,33 +86,34 @@ LLAgentListener::LLAgentListener(LLAgent &agent)
     add("startAutoPilot",
         "Start the autopilot system using the following parameters:\n"
         "[\"target_global\"]: array of target global {x, y, z} position\n"
-        "[\"stop_distance\"]: target maxiumum distance from target [default: autopilot guess]\n"
+        "[\"stop_distance\"]: maximum stop distance from target [default: autopilot guess]\n"
         "[\"target_rotation\"]: array of [x, y, z, w] quaternion values [default: no target]\n"
         "[\"rotation_threshold\"]: target maximum angle from target facing rotation [default: 0.03 radians]\n"
-        "[\"behavior_name\"]: name of the autopilot behavior [default: \"\"]"
-        "[\"allow_flying\"]: allow flying during autopilot [default: True]",
-        //"[\"callback_pump\"]: pump to send success/failure and callback data to [default: none]\n"
-        //"[\"callback_data\"]: data to send back during a callback [default: none]",
-        &LLAgentListener::startAutoPilot);
+        "[\"behavior_name\"]: name of the autopilot behavior [default: \"\"]\n"
+        "[\"allow_flying\"]: allow flying during autopilot [default: True]\n"
+        "event with [\"success\"] flag is sent to 'LLAutopilot' event pump, when auto pilot is terminated",
+        &LLAgentListener::startAutoPilot,
+        llsd::map("target_global", LLSD()));
     add("getAutoPilot",
         "Send information about current state of the autopilot system to [\"reply\"]:\n"
         "[\"enabled\"]: boolean indicating whether or not autopilot is enabled\n"
         "[\"target_global\"]: array of target global {x, y, z} position\n"
         "[\"leader_id\"]: uuid of target autopilot is following\n"
-        "[\"stop_distance\"]: target maximum distance from target\n"
+        "[\"stop_distance\"]: maximum stop distance from target\n"
         "[\"target_distance\"]: last known distance from target\n"
         "[\"use_rotation\"]: boolean indicating if autopilot has a target facing rotation\n"
         "[\"target_facing\"]: array of {x, y} target direction to face\n"
         "[\"rotation_threshold\"]: target maximum angle from target facing rotation\n"
         "[\"behavior_name\"]: name of the autopilot behavior",
         &LLAgentListener::getAutoPilot,
-        LLSDMap("reply", LLSD()));
+        llsd::map("reply", LLSD()));
     add("startFollowPilot",
         "[\"leader_id\"]: uuid of target to follow using the autopilot system (optional with avatar_name)\n"
         "[\"avatar_name\"]: avatar name to follow using the autopilot system (optional with leader_id)\n"
         "[\"allow_flying\"]: allow flying during autopilot [default: True]\n"
-        "[\"stop_distance\"]: target maxiumum distance from target [default: autopilot guess]",
-        &LLAgentListener::startFollowPilot);
+        "[\"stop_distance\"]: maximum stop distance from target [default: autopilot guess]",
+        &LLAgentListener::startFollowPilot,
+        llsd::map("reply", LLSD()));
     add("setAutoPilotTarget",
         "Update target for currently running autopilot:\n"
         "[\"target_global\"]: array of target global {x, y, z} position",
@@ -138,6 +138,69 @@ LLAgentListener::LLAgentListener(LLAgent &agent)
         "[\"contrib\"]: user's land contribution to this group\n",
         &LLAgentListener::getGroups,
         LLSDMap("reply", LLSD()));
+    //camera params are similar to LSL, see https://wiki.secondlife.com/wiki/LlSetCameraParams
+    add("setCameraParams",
+        "Set Follow camera params, and then activate it:\n"
+        "[\"camera_pos\"]: vector3, camera position in region coordinates\n"
+        "[\"focus_pos\"]: vector3, what the camera is aimed at (in region coordinates)\n"
+        "[\"focus_offset\"]: vector3, adjusts the camera focus position relative to the target, default is (1, 0, 0)\n"
+        "[\"distance\"]: float (meters), distance the camera wants to be from its target, default is 3\n"
+        "[\"focus_threshold\"]: float (meters), sets the radius of a sphere around the camera's target position within which its focus is not affected by target motion, default is 1\n"
+        "[\"camera_threshold\"]: float (meters), sets the radius of a sphere around the camera's ideal position within which it is not affected by target motion, default is 1\n"
+        "[\"focus_lag\"]: float (seconds), how much the camera lags as it tries to aim towards the target, default is 0.1\n"
+        "[\"camera_lag\"]: float (seconds), how much the camera lags as it tries to move towards its 'ideal' position, default is 0.1\n"
+        "[\"camera_pitch\"]: float (degrees), adjusts the angular amount that the camera aims straight ahead vs. straight down, maintaining the same distance, default is 0\n"
+        "[\"behindness_angle\"]: float (degrees), sets the angle in degrees within which the camera is not constrained by changes in target rotation, default is 10\n"
+        "[\"behindness_lag\"]: float (seconds), sets how strongly the camera is forced to stay behind the target if outside of behindness angle, default is 0\n"
+        "[\"camera_locked\"]: bool, locks the camera position so it will not move\n"
+        "[\"focus_locked\"]: bool, locks the camera focus so it will not move",
+        &LLAgentListener::setFollowCamParams);
+    add("setFollowCamActive",
+        "Turns on or off scripted control of the camera using boolean [\"active\"]",
+        &LLAgentListener::setFollowCamActive,
+        llsd::map("active", LLSD()));
+    add("removeCameraParams",
+        "Reset Follow camera params",
+        &LLAgentListener::removeFollowCamParams);
+
+    add("playAnimation",
+        "Play [\"item_id\"] animation locally (by default) or [\"inworld\"] (when set to true)",
+        &LLAgentListener::playAnimation,
+        llsd::map("item_id", LLSD(), "reply", LLSD()));
+    add("stopAnimation",
+        "Stop playing [\"item_id\"] animation",
+        &LLAgentListener::stopAnimation,
+        llsd::map("item_id", LLSD(), "reply", LLSD()));
+    add("getAnimationInfo",
+        "Return information about [\"item_id\"] animation",
+        &LLAgentListener::getAnimationInfo,
+        llsd::map("item_id", LLSD(), "reply", LLSD()));
+
+    add("getID",
+        "Return your own avatar ID",
+        &LLAgentListener::getID,
+        llsd::map("reply", LLSD()));
+
+    add("getNearbyAvatarsList",
+        "Return result set key [\"result\"] for nearby avatars in a range of [\"dist\"]\n"
+        "if [\"dist\"] is not specified, 'RenderFarClip' setting is used\n"
+        "reply contains \"result\" table with \"id\", \"name\", \"global_pos\", \"region_pos\", \"region_id\" fields",
+        &LLAgentListener::getNearbyAvatarsList,
+        llsd::map("reply", LLSD()));
+
+    add("getNearbyObjectsList",
+        "Return result set key [\"result\"] for nearby objects in a range of [\"dist\"]\n"
+        "if [\"dist\"] is not specified, 'RenderFarClip' setting is used\n"
+        "reply contains \"result\" table with \"id\", \"global_pos\", \"region_pos\", \"region_id\" fields",
+        &LLAgentListener::getNearbyObjectsList,
+        llsd::map("reply", LLSD()));
+
+    add("getAgentScreenPos",
+        "Return screen position of the [\"avatar_id\"] avatar or own avatar if not specified\n"
+        "reply contains \"x\", \"y\" coordinates and \"onscreen\" flag to indicate if it's actually in within the current window\n"
+        "avatar render position is used as the point",
+        &LLAgentListener::getAgentScreenPos,
+        llsd::map("reply", LLSD()));
 }
 
 void LLAgentListener::requestTeleport(LLSD const & event_data) const
@@ -168,7 +231,7 @@ void LLAgentListener::requestSit(LLSD const & event_data) const
     //mAgent.getAvatarObject()->sitOnObject();
     // shamelessly ripped from llviewermenu.cpp:handle_sit_or_stand()
     // *TODO - find a permanent place to share this code properly.
-
+    Response response(LLSD(), event_data);
     LLViewerObject *object = NULL;
     if (event_data.has("obj_uuid"))
     {
@@ -177,7 +240,13 @@ void LLAgentListener::requestSit(LLSD const & event_data) const
     else if (event_data.has("position"))
     {
         LLVector3 target_position = ll_vector3_from_sd(event_data["position"]);
-        object = findObjectClosestTo(target_position);
+        object = findObjectClosestTo(target_position, true);
+    }
+    else
+    {
+        //just sit on the ground
+        mAgent.setControlFlags(AGENT_CONTROL_SIT_ON_GROUND);
+        return;
     }
 
     if (object && object->getPCode() == LL_PCODE_VOLUME)
@@ -194,8 +263,7 @@ void LLAgentListener::requestSit(LLSD const & event_data) const
     }
     else
     {
-        LL_WARNS() << "LLAgent requestSit could not find the sit target: "
-            << event_data << LL_ENDL;
+        response.error("requestSit could not find the sit target");
     }
 }
 
@@ -205,7 +273,7 @@ void LLAgentListener::requestStand(LLSD const & event_data) const
 }
 
 
-LLViewerObject * LLAgentListener::findObjectClosestTo( const LLVector3 & position ) const
+LLViewerObject * LLAgentListener::findObjectClosestTo(const LLVector3 & position, bool sit_target) const
 {
     LLViewerObject *object = NULL;
 
@@ -216,8 +284,13 @@ LLViewerObject * LLAgentListener::findObjectClosestTo( const LLVector3 & positio
     while (cur_index < num_objects)
     {
         LLViewerObject * cur_object = gObjectList.getObject(cur_index++);
-        if (cur_object)
-        {   // Calculate distance from the target position
+        if (cur_object && !cur_object->isAttachment())
+        {
+            if(sit_target && (cur_object->getPCode() != LL_PCODE_VOLUME))
+            {
+                continue;
+            }
+            // Calculate distance from the target position
             LLVector3 target_diff = cur_object->getPositionRegion() - position;
             F32 distance_to_target = target_diff.length();
             if (distance_to_target < min_distance)
@@ -296,22 +369,6 @@ void LLAgentListener::resetAxes(const LLSD& event_data) const
     }
 }
 
-void LLAgentListener::getAxes(const LLSD& event_data) const
-{
-    LLQuaternion quat(mAgent.getQuat());
-    F32 roll, pitch, yaw;
-    quat.getEulerAngles(&roll, &pitch, &yaw);
-    // The official query API for LLQuaternion's [x, y, z, w] values is its
-    // public member mQ...
-    LLSD reply = LLSD::emptyMap();
-    reply["quat"] = llsd_copy_array(boost::begin(quat.mQ), boost::end(quat.mQ));
-    reply["euler"] = LLSD::emptyMap();
-    reply["euler"]["roll"] = roll;
-    reply["euler"]["pitch"] = pitch;
-    reply["euler"]["yaw"] = yaw;
-    sendReply(reply, event_data);
-}
-
 void LLAgentListener::getPosition(const LLSD& event_data) const
 {
     F32 roll, pitch, yaw;
@@ -333,14 +390,13 @@ void LLAgentListener::getPosition(const LLSD& event_data) const
 
 void LLAgentListener::startAutoPilot(LLSD const & event_data)
 {
-    LLQuaternion target_rotation_value;
     LLQuaternion* target_rotation = NULL;
     if (event_data.has("target_rotation"))
     {
-        target_rotation_value = ll_quaternion_from_sd(event_data["target_rotation"]);
+        LLQuaternion target_rotation_value = ll_quaternion_from_sd(event_data["target_rotation"]);
         target_rotation = &target_rotation_value;
     }
-    // *TODO: Use callback_pump and callback_data
+
     F32 rotation_threshold = 0.03f;
     if (event_data.has("rotation_threshold"))
     {
@@ -360,13 +416,24 @@ void LLAgentListener::startAutoPilot(LLSD const & event_data)
         stop_distance = (F32)event_data["stop_distance"].asReal();
     }
 
+    std::string behavior_name = LLCoros::getName();
+    if (event_data.has("behavior_name"))
+    {
+        behavior_name = event_data["behavior_name"].asString();
+    }
+
     // Clear follow target, this is doing a path
     mFollowTarget.setNull();
 
+    auto finish_cb = [](bool success, void*)
+    {
+        LLEventPumps::instance().obtain("LLAutopilot").post(llsd::map("success", success));
+    };
+
     mAgent.startAutoPilotGlobal(ll_vector3d_from_sd(event_data["target_global"]),
-                                event_data["behavior_name"],
+                                behavior_name,
                                 target_rotation,
-                                NULL, NULL,
+                                finish_cb, NULL,
                                 stop_distance,
                                 rotation_threshold,
                                 allow_flying);
@@ -374,7 +441,7 @@ void LLAgentListener::startAutoPilot(LLSD const & event_data)
 
 void LLAgentListener::getAutoPilot(const LLSD& event_data) const
 {
-    LLSD reply = LLSD::emptyMap();
+    Response reply(LLSD(), event_data);
 
     LLSD::Boolean enabled = mAgent.getAutoPilot();
     reply["enabled"] = enabled;
@@ -403,12 +470,11 @@ void LLAgentListener::getAutoPilot(const LLSD& event_data) const
     reply["rotation_threshold"] = mAgent.getAutoPilotRotationThreshold();
     reply["behavior_name"] = mAgent.getAutoPilotBehaviorName();
     reply["fly"] = (LLSD::Boolean) mAgent.getFlying();
-
-    sendReply(reply, event_data);
 }
 
 void LLAgentListener::startFollowPilot(LLSD const & event_data)
 {
+    Response response(LLSD(), event_data);
     LLUUID target_id;
 
     bool allow_flying = true;
@@ -442,6 +508,10 @@ void LLAgentListener::startFollowPilot(LLSD const & event_data)
             }
         }
     }
+    else
+    {
+        return response.error("'leader_id' or 'avatar_name' should be specified");
+    }
 
     F32 stop_distance = 0.f;
     if (event_data.has("stop_distance"))
@@ -449,13 +519,16 @@ void LLAgentListener::startFollowPilot(LLSD const & event_data)
         stop_distance = (F32)event_data["stop_distance"].asReal();
     }
 
-    if (target_id.notNull())
+    if (!gObjectList.findObject(target_id))
     {
-        mAgent.setFlying(allow_flying);
-        mFollowTarget = target_id;  // Save follow target so we can report distance later
-
-        mAgent.startFollowPilot(target_id, allow_flying, stop_distance);
+        std::string target_info = event_data.has("leader_id") ? event_data["leader_id"] : event_data["avatar_name"];
+        return response.error(stringize("Target ", std::quoted(target_info), " was not found"));
     }
+
+    mAgent.setFlying(allow_flying);
+    mFollowTarget = target_id;  // Save follow target so we can report distance later
+
+    mAgent.startFollowPilot(target_id, allow_flying, stop_distance);
 }
 
 void LLAgentListener::setAutoPilotTarget(LLSD const & event_data) const
@@ -519,3 +592,209 @@ void LLAgentListener::getGroups(const LLSD& event) const
     }
     sendReply(LLSDMap("groups", reply), event);
 }
+
+/*----------------------------- camera control -----------------------------*/
+// specialize LLSDParam to support (const LLVector3&) arguments -- this
+// wouldn't even be necessary except that the relevant LLVector3 constructor
+// is explicitly explicit
+template <>
+class LLSDParam<const LLVector3&>: public LLSDParamBase
+{
+public:
+    LLSDParam(const LLSD& value): value(LLVector3(value)) {}
+
+    operator const LLVector3&() const { return value; }
+
+private:
+    LLVector3 value;
+};
+
+// accept any of a number of similar LLFollowCamMgr methods with different
+// argument types, and return a wrapper lambda that accepts LLSD and converts
+// to the target argument type
+template <typename T>
+auto wrap(void (LLFollowCamMgr::*method)(const LLUUID& source, T arg))
+{
+    return [method](LLFollowCamMgr& followcam, const LLUUID& source, const LLSD& arg)
+    { (followcam.*method)(source, LLSDParam<T>(arg)); };
+}
+
+// table of supported LLFollowCamMgr methods,
+// with the corresponding setFollowCamParams() argument keys
+static std::pair<std::string, std::function<void(LLFollowCamMgr&, const LLUUID&, const LLSD&)>>
+cam_params[] =
+{
+    { "camera_pos",       wrap(&LLFollowCamMgr::setPosition) },
+    { "focus_pos",        wrap(&LLFollowCamMgr::setFocus) },
+    { "focus_offset",     wrap(&LLFollowCamMgr::setFocusOffset) },
+    { "camera_locked",    wrap(&LLFollowCamMgr::setPositionLocked) },
+    { "focus_locked",     wrap(&LLFollowCamMgr::setFocusLocked) },
+    { "distance",         wrap(&LLFollowCamMgr::setDistance) },
+    { "focus_threshold",  wrap(&LLFollowCamMgr::setFocusThreshold) },
+    { "camera_threshold", wrap(&LLFollowCamMgr::setPositionThreshold) },
+    { "focus_lag",        wrap(&LLFollowCamMgr::setFocusLag) },
+    { "camera_lag",       wrap(&LLFollowCamMgr::setPositionLag) },
+    { "camera_pitch",     wrap(&LLFollowCamMgr::setPitch) },
+    { "behindness_lag",   wrap(&LLFollowCamMgr::setBehindnessLag) },
+    { "behindness_angle", wrap(&LLFollowCamMgr::setBehindnessAngle) },
+};
+
+void LLAgentListener::setFollowCamParams(const LLSD& event) const
+{
+    auto& followcam{ LLFollowCamMgr::instance() };
+    for (const auto& pair : cam_params)
+    {
+        if (event.has(pair.first))
+        {
+            pair.second(followcam, gAgentID, event[pair.first]);
+        }
+    }
+    followcam.setCameraActive(gAgentID, true);
+}
+
+void LLAgentListener::setFollowCamActive(LLSD const & event) const
+{
+    LLFollowCamMgr::getInstance()->setCameraActive(gAgentID, event["active"]);
+}
+
+void LLAgentListener::removeFollowCamParams(LLSD const & event) const
+{
+    LLFollowCamMgr::getInstance()->removeFollowCamParams(gAgentID);
+}
+
+LLViewerInventoryItem* get_anim_item(LLEventAPI::Response &response, const LLSD &event_data)
+{
+    LLViewerInventoryItem* item = gInventory.getItem(event_data["item_id"].asUUID());
+    if (!item || (item->getInventoryType() != LLInventoryType::IT_ANIMATION))
+    {
+        response.error(stringize("Animation item ", std::quoted(event_data["item_id"].asString()), " was not found"));
+        return NULL;
+    }
+    return item;
+}
+
+void LLAgentListener::playAnimation(LLSD const &event_data)
+{
+    Response response(LLSD(), event_data);
+    if (LLViewerInventoryItem* item = get_anim_item(response, event_data))
+    {
+        if (event_data["inworld"].asBoolean())
+        {
+            mAgent.sendAnimationRequest(item->getAssetUUID(), ANIM_REQUEST_START);
+        }
+        else
+        {
+            gAgentAvatarp->startMotion(item->getAssetUUID());
+        }
+    }
+}
+
+void LLAgentListener::stopAnimation(LLSD const &event_data)
+{
+    Response response(LLSD(), event_data);
+    if (LLViewerInventoryItem* item = get_anim_item(response, event_data))
+    {
+        gAgentAvatarp->stopMotion(item->getAssetUUID());
+        mAgent.sendAnimationRequest(item->getAssetUUID(), ANIM_REQUEST_STOP);
+    }
+}
+
+void LLAgentListener::getAnimationInfo(LLSD const &event_data)
+{
+    Response response(LLSD(), event_data);
+    if (LLViewerInventoryItem* item = get_anim_item(response, event_data))
+    {
+        // if motion exists, will return existing one
+        LLMotion* motion = gAgentAvatarp->createMotion(item->getAssetUUID());
+        response["anim_info"] = llsd::map("duration", motion->getDuration(),
+                                               "is_loop", motion->getLoop(),
+                                               "num_joints", motion->getNumJointMotions(),
+                                               "asset_id", item->getAssetUUID(),
+                                               "priority", motion->getPriority());
+    }
+}
+
+void LLAgentListener::getID(LLSD const& event_data)
+{
+    Response response(llsd::map("id", gAgentID), event_data);
+}
+
+F32 get_search_radius(LLSD const& event_data)
+{
+    static LLCachedControl<F32> render_far_clip(gSavedSettings, "RenderFarClip", 64);
+    F32 dist = render_far_clip;
+    if (event_data.has("dist"))
+    {
+        dist = llclamp((F32)event_data["dist"].asReal(), 1, 512);
+    }
+   return dist * dist;
+}
+
+void LLAgentListener::getNearbyAvatarsList(LLSD const& event_data)
+{
+    Response response(LLSD(), event_data);
+    F32 radius = get_search_radius(event_data);
+    LLVector3d agent_pos = gAgent.getPositionGlobal();
+    for (LLCharacter* character : LLCharacter::sInstances)
+    {
+        LLVOAvatar* avatar = (LLVOAvatar*)character;
+        if (avatar && !avatar->isDead() && !avatar->isControlAvatar() && !avatar->isSelf())
+        {
+            if ((dist_vec_squared(avatar->getPositionGlobal(), agent_pos) <= radius))
+            {
+                LLAvatarName av_name;
+                LLAvatarNameCache::get(avatar->getID(), &av_name);
+                LLVector3 region_pos = avatar->getCharacterPosition();
+                response["result"].append(llsd::map("id", avatar->getID(), "global_pos", ll_sd_from_vector3d(avatar->getPosGlobalFromAgent(region_pos)),
+                                                    "region_pos", ll_sd_from_vector3(region_pos), "name", av_name.getUserName(), "region_id", avatar->getRegion()->getRegionID()));
+            }
+        }
+    }
+}
+
+void LLAgentListener::getNearbyObjectsList(LLSD const& event_data)
+{
+    Response response(LLSD(), event_data);
+    F32 radius = get_search_radius(event_data);
+    S32 num_objects = gObjectList.getNumObjects();
+    LLVector3d agent_pos = gAgent.getPositionGlobal();
+    for (S32 i = 0; i < num_objects; ++i)
+    {
+        LLViewerObject* object = gObjectList.getObject(i);
+        if (object && object->getVolume() && !object->isAttachment())
+        {
+            if ((dist_vec_squared(object->getPositionGlobal(), agent_pos) <= radius))
+            {
+                response["result"].append(llsd::map("id", object->getID(), "global_pos", ll_sd_from_vector3d(object->getPositionGlobal()), "region_pos",
+                          ll_sd_from_vector3(object->getPositionRegion()), "region_id", object->getRegion()->getRegionID()));
+            }
+        }
+    }
+}
+
+void LLAgentListener::getAgentScreenPos(LLSD const& event_data)
+{
+    Response response(LLSD(), event_data);
+    LLVector3 render_pos;
+    if (event_data.has("avatar_id") && (event_data["avatar_id"].asUUID() != gAgentID))
+    {
+        LLUUID avatar_id(event_data["avatar_id"]);
+        for (LLCharacter* character : LLCharacter::sInstances)
+        {
+            LLVOAvatar* avatar = (LLVOAvatar*)character;
+            if (!avatar->isDead() && (avatar->getID() == avatar_id))
+            {
+                render_pos = avatar->getRenderPosition();
+                break;
+            }
+        }
+    }
+    else if (gAgentAvatarp.notNull() && gAgentAvatarp->isValid())
+    {
+        render_pos = gAgentAvatarp->getRenderPosition();
+    }
+    LLCoordGL screen_pos;
+    response["onscreen"] = LLViewerCamera::getInstance()->projectPosAgentToScreen(render_pos, screen_pos, false);
+    response["x"] = screen_pos.mX;
+    response["y"] = screen_pos.mY;
+}
diff --git a/indra/newview/llagentlistener.h b/indra/newview/llagentlistener.h
index c544d089ce..31f50a653f 100644
--- a/indra/newview/llagentlistener.h
+++ b/indra/newview/llagentlistener.h
@@ -48,7 +48,6 @@ private:
     void requestStand(LLSD const & event_data) const;
     void requestTouch(LLSD const & event_data) const;
     void resetAxes(const LLSD& event_data) const;
-    void getAxes(const LLSD& event_data) const;
     void getGroups(const LLSD& event) const;
     void getPosition(const LLSD& event_data) const;
     void startAutoPilot(const LLSD& event_data);
@@ -58,7 +57,21 @@ private:
     void stopAutoPilot(const LLSD& event_data) const;
     void lookAt(LLSD const & event_data) const;
 
-    LLViewerObject * findObjectClosestTo( const LLVector3 & position ) const;
+    void setFollowCamParams(LLSD const & event_data) const;
+    void setFollowCamActive(LLSD const & event_data) const;
+    void removeFollowCamParams(LLSD const & event_data) const;
+
+    void playAnimation(LLSD const &event_data);
+    void playAnimation_(const LLUUID& asset_id, const bool inworld);
+    void stopAnimation(LLSD const &event_data);
+    void getAnimationInfo(LLSD const &event_data);
+
+    void getID(LLSD const& event_data);
+    void getNearbyAvatarsList(LLSD const& event_data);
+    void getNearbyObjectsList(LLSD const& event_data);
+    void getAgentScreenPos(LLSD const& event_data);
+
+    LLViewerObject * findObjectClosestTo( const LLVector3 & position, bool sit_target = false ) const;
 
 private:
     LLAgent &   mAgent;
diff --git a/indra/newview/llfloaterimnearbychat.cpp b/indra/newview/llfloaterimnearbychat.cpp
index 28c651f0cd..db6f9ac22a 100644
--- a/indra/newview/llfloaterimnearbychat.cpp
+++ b/indra/newview/llfloaterimnearbychat.cpp
@@ -52,6 +52,7 @@
 
 #include "llfirstuse.h"
 #include "llfloaterimnearbychat.h"
+#include "llfloaterimnearbychatlistener.h"
 #include "llagent.h" // gAgent
 #include "llgesturemgr.h"
 #include "llmultigesture.h"
@@ -71,6 +72,8 @@
 
 S32 LLFloaterIMNearbyChat::sLastSpecialChatChannel = 0;
 
+static LLFloaterIMNearbyChatListener sChatListener;
+
 constexpr S32 EXPANDED_HEIGHT = 266;
 constexpr S32 COLLAPSED_HEIGHT = 60;
 constexpr S32 EXPANDED_MIN_HEIGHT = 150;
diff --git a/indra/newview/llfloaterimnearbychatlistener.cpp b/indra/newview/llfloaterimnearbychatlistener.cpp
index 43173d3680..b15a32ce40 100644
--- a/indra/newview/llfloaterimnearbychatlistener.cpp
+++ b/indra/newview/llfloaterimnearbychatlistener.cpp
@@ -34,12 +34,12 @@
 #include "llagent.h"
 #include "llchat.h"
 #include "llviewercontrol.h"
+#include "stringize.h"
 
+static const F32 CHAT_THROTTLE_PERIOD = 1.f;
 
-LLFloaterIMNearbyChatListener::LLFloaterIMNearbyChatListener(LLFloaterIMNearbyChat & chatbar)
-  : LLEventAPI("LLChatBar",
-               "LLChatBar listener to (e.g.) sendChat, etc."),
-    mChatbar(chatbar)
+LLFloaterIMNearbyChatListener::LLFloaterIMNearbyChatListener() :
+    LLEventAPI("LLChatBar", "LLChatBar listener to (e.g.) sendChat, etc.")
 {
     add("sendChat",
         "Send chat to the simulator:\n"
@@ -49,10 +49,18 @@ LLFloaterIMNearbyChatListener::LLFloaterIMNearbyChatListener(LLFloaterIMNearbyCh
         &LLFloaterIMNearbyChatListener::sendChat);
 }
 
-
 // "sendChat" command
-void LLFloaterIMNearbyChatListener::sendChat(LLSD const & chat_data) const
+void LLFloaterIMNearbyChatListener::sendChat(LLSD const& chat_data)
 {
+    F64 cur_time = LLTimer::getElapsedSeconds();
+
+    if (cur_time < mLastThrottleTime + CHAT_THROTTLE_PERIOD)
+    {
+        LL_WARNS("LLFloaterIMNearbyChatListener") << "'sendChat' was  throttled" << LL_ENDL;
+        return;
+    }
+    mLastThrottleTime = cur_time;
+
     // Extract the data
     std::string chat_text = chat_data["message"].asString();
 
@@ -81,20 +89,12 @@ void LLFloaterIMNearbyChatListener::sendChat(LLSD const & chat_data) const
     }
 
     // Have to prepend /42 style channel numbers
-    std::string chat_to_send;
-    if (channel == 0)
-    {
-        chat_to_send = chat_text;
-    }
-    else
+    if (channel)
     {
-        chat_to_send += "/";
-        chat_to_send += chat_data["channel"].asString();
-        chat_to_send += " ";
-        chat_to_send += chat_text;
+        chat_text = stringize("/", chat_data["channel"].asString(), " ", chat_text);
     }
 
     // Send it as if it was typed in
-    mChatbar.sendChatFromViewer(chat_to_send, type_o_chat, ((bool)(channel == 0)) && gSavedSettings.getBOOL("PlayChatAnim"));
+    LLFloaterIMNearbyChat::sendChatFromViewer(chat_text, type_o_chat, (channel == 0) && gSavedSettings.getBOOL("PlayChatAnim"));
 }
 
diff --git a/indra/newview/llfloaterimnearbychatlistener.h b/indra/newview/llfloaterimnearbychatlistener.h
index 96184d95b3..71eba53a9a 100644
--- a/indra/newview/llfloaterimnearbychatlistener.h
+++ b/indra/newview/llfloaterimnearbychatlistener.h
@@ -38,12 +38,12 @@ class LLFloaterIMNearbyChat;
 class LLFloaterIMNearbyChatListener : public LLEventAPI
 {
 public:
-    LLFloaterIMNearbyChatListener(LLFloaterIMNearbyChat & chatbar);
+    LLFloaterIMNearbyChatListener();
 
 private:
-    void sendChat(LLSD const & chat_data) const;
+    void sendChat(LLSD const & chat_data);
 
-    LLFloaterIMNearbyChat & mChatbar;
+    F64 mLastThrottleTime{0};
 };
 
 #endif // LL_LLFLOATERIMNEARBYCHATLISTENER_H