chore: sync main to experimental

proto/decentraland/kernel/apis/restricted_actions.proto

@@ -2,6 +2,7 @@ syntax = "proto3";
 package decentraland.kernel.apis;
 
 import "decentraland/common/vectors.proto";
+import "decentraland/sdk/components/common/avatar_mask.proto";
 
 message MovePlayerToRequest {
   decentraland.common.Vector3 new_relative_position = 1;
@@ -16,7 +17,7 @@ message TeleportToRequest {
 
 message TriggerEmoteRequest {
   string predefined_emote = 1;
-  optional uint32 mask = 2;
+  optional decentraland.sdk.components.common.AvatarMask mask = 2;
 }
 
 message ChangeRealmRequest {
@@ -41,7 +42,7 @@ message CommsAdapterRequest {
 message TriggerSceneEmoteRequest {
   string src = 1;
   optional bool loop = 2;
-  optional uint32 mask = 3;
+  optional decentraland.sdk.components.common.AvatarMask mask = 3;
 }
 
 message SuccessResponse {

proto/decentraland/sdk/components/billboard.proto

@@ -7,14 +7,20 @@ import "decentraland/sdk/components/common/id.proto";
 // https://adr.decentraland.org/adr/ADR-198
 option (common.ecs_component_id) = 1090;
 
-// The Billboard component makes an Entity automatically reorient its rotation to face the camera. 
-// As the name indicates, it’s used to display in-game billboards and frequently combined with 
+// The Billboard component makes an Entity automatically reorient its rotation to face a target.
+// By default (when target_entity is unset), the billboard faces the main camera. When target_entity
+// is set, the billboard faces that entity instead. Setting target_entity to the camera reserved
+// entity (2) is equivalent to leaving the field unset. If the referenced target entity doesn’t exist
+// or is deleted, the billboard reorientation is disabled until the target exists again.
+//
+// As the name indicates, it’s used to display in-game billboards and frequently combined with
 // the TextShape component.
 //
-// Billboard only affects the Entity's rotation. Its scale and position are still determined by its
+// Billboard only affects the Entity’s rotation. Its scale and position are still determined by its
 // Transform.
 message PBBillboard {
   optional BillboardMode billboard_mode = 1; // the BillboardMode (default: BM_ALL)
+  optional uint32 target_entity = 2; // entity to face instead of the camera; if the referenced entity doesn’t exist, the billboard behavior is disabled until it does
 }
 
 // BillboardMode indicates one or more axis for automatic rotation, in OR-able bit flag form.

proto/decentraland/sdk/components/common/avatar_mask.proto

@@ -0,0 +1,7 @@
+syntax = "proto3";
+package decentraland.sdk.components.common;
+
+// Mask for which bones an animation applies to.
+enum AvatarMask {
+  AM_UPPER_BODY = 0;
+}