Merge pull request #48028 from smix8/issue_47337_broken_navagent3d_callback

scene/3d/navigation_agent_3d.cpp

@@ -34,6 +34,8 @@
 #include "servers/navigation_server_3d.h"
 
 void NavigationAgent3D::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("get_rid"), &NavigationAgent3D::get_rid);
+
 	ClassDB::bind_method(D_METHOD("set_target_desired_distance", "desired_distance"), &NavigationAgent3D::set_target_desired_distance);
 	ClassDB::bind_method(D_METHOD("get_target_desired_distance"), &NavigationAgent3D::get_target_desired_distance);
 
@@ -95,8 +97,11 @@ void NavigationAgent3D::_notification(int p_what) {
 	switch (p_what) {
 		case NOTIFICATION_READY: {
 			agent_parent = Object::cast_to<Node3D>(get_parent());
-
-			NavigationServer3D::get_singleton()->agent_set_callback(agent, this, "_avoidance_done");
+			if (agent_parent != nullptr) {
+				// place agent on navigation map first or else the RVO agent callback creation fails silently later
+				NavigationServer3D::get_singleton()->agent_set_map(get_rid(), agent_parent->get_world_3d()->get_navigation_map());
+				NavigationServer3D::get_singleton()->agent_set_callback(agent, this, "_avoidance_done");
+			}
 			set_physics_process_internal(true);
 		} break;
 		case NOTIFICATION_EXIT_TREE: {