add WalkPlayerTo RPC and walk fields to movement components

proto/decentraland/kernel/apis/restricted_actions.proto

@@ -48,7 +48,17 @@ message SuccessResponse {
 
 message TriggerEmoteResponse { }
 
-message MovePlayerToResponse { 
+message MovePlayerToResponse {
+  bool success = 1;
+}
+
+message WalkPlayerToRequest {
+  decentraland.common.Vector3 new_relative_position = 1;
+  float stop_threshold = 2;
+  optional float timeout = 3; // max seconds before the request is failed; not passed to the movement scene
+}
+
+message WalkPlayerToResponse {
   bool success = 1;
 }
 
@@ -79,6 +89,12 @@ service RestrictedActionsService {
   // whole interpolation being completed or interrupted (e.g: by input movement)
   rpc MovePlayerTo(MovePlayerToRequest) returns (MovePlayerToResponse) {}
 
+  // WalkPlayerTo will walk the player to a position relative to the current scene,
+  // managed by the movement controller scene. Returns success when the player reaches
+  // within stop_threshold distance, or false if the path is blocked, the player gets
+  // stuck, the player interrupts the walk with manual input, or the optional timeout expires.
+  rpc WalkPlayerTo(WalkPlayerToRequest) returns (WalkPlayerToResponse) {}
+
   // TeleportTo will move the user to the specified world LAND parcel coordinates
   rpc TeleportTo(TeleportToRequest) returns (TeleportToResponse) {}
 

proto/decentraland/sdk/components/avatar_movement.proto

@@ -9,8 +9,9 @@ option (common.ecs_component_id) = 1501;
 
 message PBAvatarMovement {
   decentraland.common.Vector3 velocity = 1;
-  float orientation = 2; // 0-360, we don't allow pitch/roll
+  float orientation = 2;                                    // 0-360, we don't allow pitch/roll
   optional decentraland.common.Vector3 ground_direction = 3;
+  optional bool walk_success = 4;                           // set for one frame when a walk_target ends: true = reached target, false = failed; absent = in progress or no walk
 }
 
 // engine behaviour (uses only capsule shapecasts and GJK closest point for portability):

proto/decentraland/sdk/components/avatar_movement_info.proto

@@ -17,4 +17,6 @@ message PBAvatarMovementInfo {
   decentraland.common.Vector3 external_velocity = 5;        // the velocity imparted by movement of the "ground" platform or pushing from other moving colliders
   decentraland.sdk.components.PBAvatarLocomotionSettings active_avatar_locomotion_settings = 6;
   decentraland.sdk.components.PBInputModifier active_input_modifier = 7;
+  optional decentraland.common.Vector3 walk_target = 8;    // if set, the movement scene should walk the player to this scene-relative position
+  optional float walk_threshold = 9;                        // stop distance for walk_target; considered reached when within this distance
 }