From 1a1b35721a89e2b27d2b18b8b746c37fd56734aa Mon Sep 17 00:00:00 2001
From: Bastiaan Olij <mux213@gmail.com>
Date: Wed, 13 Mar 2019 20:43:21 +1100
Subject: [PATCH] Send notifications to ARVRInterfaces

---
 .../gdnative/arvr/arvr_interface_gdnative.cpp    |  9 +++++++++
 modules/gdnative/arvr/arvr_interface_gdnative.h  |  1 +
 modules/gdnative/include/arvr/godot_arvr.h       |  1 +
 modules/mobile_vr/mobile_vr_interface.cpp        |  6 ++++++
 modules/mobile_vr/mobile_vr_interface.h          |  1 +
 scene/3d/arvr_nodes.cpp                          | 16 ++++++++++++----
 servers/arvr/arvr_interface.h                    |  1 +
 7 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/modules/gdnative/arvr/arvr_interface_gdnative.cpp b/modules/gdnative/arvr/arvr_interface_gdnative.cpp
index 8c602e0cba2..eac8e26160a 100644
--- a/modules/gdnative/arvr/arvr_interface_gdnative.cpp
+++ b/modules/gdnative/arvr/arvr_interface_gdnative.cpp
@@ -222,6 +222,15 @@ void ARVRInterfaceGDNative::process() {
 	interface->process(data);
 }
 
+void ARVRInterfaceGDNative::notification(int p_what) {
+	ERR_FAIL_COND(interface == NULL);
+
+	// this is only available in interfaces that implement 1.1 or later
+	if ((interface->version.major > 1) || ((interface->version.major == 1) && (interface->version.minor > 0))) {
+		interface->notification(p_what);
+	}
+}
+
 /////////////////////////////////////////////////////////////////////////////////////
 // some helper callbacks
 
diff --git a/modules/gdnative/arvr/arvr_interface_gdnative.h b/modules/gdnative/arvr/arvr_interface_gdnative.h
index 3f966ece517..86396b067a4 100644
--- a/modules/gdnative/arvr/arvr_interface_gdnative.h
+++ b/modules/gdnative/arvr/arvr_interface_gdnative.h
@@ -82,6 +82,7 @@ public:
 	virtual void commit_for_eye(ARVRInterface::Eyes p_eye, RID p_render_target, const Rect2 &p_screen_rect);
 
 	virtual void process();
+	virtual void notification(int p_what);
 };
 
 #endif // ARVR_INTERFACE_GDNATIVE_H
diff --git a/modules/gdnative/include/arvr/godot_arvr.h b/modules/gdnative/include/arvr/godot_arvr.h
index 321b471d0e6..60bad276181 100644
--- a/modules/gdnative/include/arvr/godot_arvr.h
+++ b/modules/gdnative/include/arvr/godot_arvr.h
@@ -63,6 +63,7 @@ typedef struct {
 	void (*process)(void *);
 	// only in 1.1 onwards
 	godot_int (*get_external_texture_for_eye)(void *, godot_int);
+	void (*notification)(godot_int);
 } godot_arvr_interface_gdnative;
 
 void GDAPI godot_arvr_register_interface(const godot_arvr_interface_gdnative *p_interface);
diff --git a/modules/mobile_vr/mobile_vr_interface.cpp b/modules/mobile_vr/mobile_vr_interface.cpp
index dc7ed03548e..fe107d36839 100644
--- a/modules/mobile_vr/mobile_vr_interface.cpp
+++ b/modules/mobile_vr/mobile_vr_interface.cpp
@@ -440,6 +440,12 @@ void MobileVRInterface::process() {
 	};
 };
 
+void MobileVRInterface::notification(int p_what){
+	_THREAD_SAFE_METHOD_
+
+	// nothing to do here, I guess we could pauze our sensors...
+}
+
 MobileVRInterface::MobileVRInterface() {
 	initialized = false;
 
diff --git a/modules/mobile_vr/mobile_vr_interface.h b/modules/mobile_vr/mobile_vr_interface.h
index e595daf16e1..7fa51eecb7a 100644
--- a/modules/mobile_vr/mobile_vr_interface.h
+++ b/modules/mobile_vr/mobile_vr_interface.h
@@ -142,6 +142,7 @@ public:
 	virtual void commit_for_eye(ARVRInterface::Eyes p_eye, RID p_render_target, const Rect2 &p_screen_rect);
 
 	virtual void process();
+	virtual void notification(int p_what);
 
 	MobileVRInterface();
 	~MobileVRInterface();
diff --git a/scene/3d/arvr_nodes.cpp b/scene/3d/arvr_nodes.cpp
index e5346c4c53b..c0bd8993eb1 100644
--- a/scene/3d/arvr_nodes.cpp
+++ b/scene/3d/arvr_nodes.cpp
@@ -583,6 +583,10 @@ void ARVROrigin::set_world_scale(float p_world_scale) {
 };
 
 void ARVROrigin::_notification(int p_what) {
+	// get our ARVRServer
+	ARVRServer *arvr_server = ARVRServer::get_singleton();
+	ERR_FAIL_NULL(arvr_server);
+
 	switch (p_what) {
 		case NOTIFICATION_ENTER_TREE: {
 			set_process_internal(true);
@@ -591,10 +595,6 @@ void ARVROrigin::_notification(int p_what) {
 			set_process_internal(false);
 		}; break;
 		case NOTIFICATION_INTERNAL_PROCESS: {
-			// get our ARVRServer
-			ARVRServer *arvr_server = ARVRServer::get_singleton();
-			ERR_FAIL_NULL(arvr_server);
-
 			// set our world origin to our node transform
 			arvr_server->set_world_origin(get_global_transform());
 
@@ -611,6 +611,14 @@ void ARVROrigin::_notification(int p_what) {
 		default:
 			break;
 	};
+
+	// send our notification to all active ARVR interfaces, they may need to react to it also
+	for (int i = 0; i < arvr_server->get_interface_count(); i++) {
+		Ref<ARVRInterface> interface = arvr_server->get_interface(i);
+		if (interface.is_valid() && interface->is_initialized()) {
+			interface->notification(p_what);
+		}
+	}
 };
 
 ARVROrigin::ARVROrigin() {
diff --git a/servers/arvr/arvr_interface.h b/servers/arvr/arvr_interface.h
index 8459a82388d..9ea59a39618 100644
--- a/servers/arvr/arvr_interface.h
+++ b/servers/arvr/arvr_interface.h
@@ -112,6 +112,7 @@ public:
 	virtual void commit_for_eye(ARVRInterface::Eyes p_eye, RID p_render_target, const Rect2 &p_screen_rect) = 0; /* output the left or right eye */
 
 	virtual void process() = 0;
+	virtual void notification(int p_what) = 0;
 
 	ARVRInterface();
 	~ARVRInterface();