Optimize/adjust blocks/ActiveObjects sent at the server based on client settings. (#4811)

Optimize/adjust blocks and active blocks sent at the server based on client settings.

src/camera.cpp

@@ -484,13 +484,12 @@ void Camera::update(LocalPlayer* player, f32 frametime, f32 busytime,
 
 void Camera::updateViewingRange()
 {
+	f32 viewing_range = g_settings->getFloat("viewing_range");
+	m_draw_control.wanted_range = viewing_range;
 	if (m_draw_control.range_all) {
 		m_cameranode->setFarValue(100000.0);
 		return;
 	}
-
-	f32 viewing_range = g_settings->getFloat("viewing_range");
-	m_draw_control.wanted_range = viewing_range;
 	m_cameranode->setFarValue((viewing_range < 2000) ? 2000 * BS : viewing_range * BS);
 }
 

src/client.cpp

@@ -930,13 +930,16 @@ void Client::Send(NetworkPacket* pkt)
 }
 
 // Will fill up 12 + 12 + 4 + 4 + 4 bytes
-void writePlayerPos(LocalPlayer *myplayer, NetworkPacket *pkt)
+void writePlayerPos(LocalPlayer *myplayer, ClientMap *clientMap, NetworkPacket *pkt)
 {
 	v3f pf           = myplayer->getPosition() * 100;
 	v3f sf           = myplayer->getSpeed() * 100;
 	s32 pitch        = myplayer->getPitch() * 100;
 	s32 yaw          = myplayer->getYaw() * 100;
 	u32 keyPressed   = myplayer->keyPressed;
+	// scaled by 80, so that pi can fit into a u8
+	u8 fov           = clientMap->getCameraFov() * 80;
+	u8 wanted_range  = clientMap->getControl().wanted_range / MAP_BLOCKSIZE;
 
 	v3s32 position(pf.X, pf.Y, pf.Z);
 	v3s32 speed(sf.X, sf.Y, sf.Z);
@@ -948,9 +951,11 @@ void writePlayerPos(LocalPlayer *myplayer, NetworkPacket *pkt)
 		[12+12] s32 pitch*100
 		[12+12+4] s32 yaw*100
 		[12+12+4+4] u32 keyPressed
+		[12+12+4+4+1] u8 fov*80
+		[12+12+4+4+4+1] u8 wanted_range / MAP_BLOCKSIZE
 	*/
-
 	*pkt << position << speed << pitch << yaw << keyPressed;
+	*pkt << fov << wanted_range;
 }
 
 void Client::interact(u8 action, const PointedThing& pointed)
@@ -992,7 +997,7 @@ void Client::interact(u8 action, const PointedThing& pointed)
 
 	pkt.putLongString(tmp_os.str());
 
-	writePlayerPos(myplayer, &pkt);
+	writePlayerPos(myplayer, &m_env.getClientMap(), &pkt);
 
 	Send(&pkt);
 }
@@ -1296,12 +1301,19 @@ void Client::sendPlayerPos()
 	if(myplayer == NULL)
 		return;
 
+	ClientMap &map = m_env.getClientMap();
+
+	u8 camera_fov    = map.getCameraFov();
+	u8 wanted_range  = map.getControl().wanted_range;
+
 	// Save bandwidth by only updating position when something changed
 	if(myplayer->last_position        == myplayer->getPosition() &&
 			myplayer->last_speed        == myplayer->getSpeed()    &&
 			myplayer->last_pitch        == myplayer->getPitch()    &&
 			myplayer->last_yaw          == myplayer->getYaw()      &&
-			myplayer->last_keyPressed == myplayer->keyPressed)
+			myplayer->last_keyPressed   == myplayer->keyPressed    &&
+			myplayer->last_camera_fov   == camera_fov              &&
+			myplayer->last_wanted_range == wanted_range)
 		return;
 
 	myplayer->last_position     = myplayer->getPosition();
@@ -1309,6 +1321,10 @@ void Client::sendPlayerPos()
 	myplayer->last_pitch        = myplayer->getPitch();
 	myplayer->last_yaw          = myplayer->getYaw();
 	myplayer->last_keyPressed   = myplayer->keyPressed;
+	myplayer->last_camera_fov   = camera_fov;
+	myplayer->last_wanted_range = wanted_range;
+
+	//infostream << "Sending Player Position information" << std::endl;
 
 	u16 our_peer_id;
 	{
@@ -1324,7 +1340,7 @@ void Client::sendPlayerPos()
 
 	NetworkPacket pkt(TOSERVER_PLAYERPOS, 12 + 12 + 4 + 4 + 4);
 
-	writePlayerPos(myplayer, &pkt);
+	writePlayerPos(myplayer, &map, &pkt);
 
 	Send(&pkt);
 }

src/clientiface.cpp

@@ -173,12 +173,20 @@ void RemoteClient::GetNextBlocks (
 	*/
 	s32 new_nearest_unsent_d = -1;
 
-	const s16 full_d_max = g_settings->getS16("max_block_send_distance");
+	// get view range and camera fov from the client
-	const s16 d_opt = g_settings->getS16("block_send_optimize_distance");
+	s16 wanted_range = sao->getWantedRange();
+	float camera_fov = sao->getFov();
+	// if FOV, wanted_range are not available (old client), fall back to old default
+	if (wanted_range <= 0) wanted_range = 1000;
+	if (camera_fov <= 0) camera_fov = (72.0*M_PI/180) * 4./3.;
+
+	const s16 full_d_max = MYMIN(g_settings->getS16("max_block_send_distance"), wanted_range);
+	const s16 d_opt = MYMIN(g_settings->getS16("block_send_optimize_distance"), wanted_range);
 	const s16 d_blocks_in_sight = full_d_max * BS * MAP_BLOCKSIZE;
+	//infostream << "Fov from client " << camera_fov << " full_d_max " << full_d_max << std::endl;
 
 	s16 d_max = full_d_max;
-	s16 d_max_gen = g_settings->getS16("max_block_generate_distance");
+	s16 d_max_gen = MYMIN(g_settings->getS16("max_block_generate_distance"), wanted_range);
 
 	// Don't loop very much at a time
 	s16 max_d_increment_at_time = 2;
@@ -242,7 +250,6 @@ void RemoteClient::GetNextBlocks (
 				FOV setting. The default of 72 degrees is fine.
 			*/
 
-			float camera_fov = (72.0*M_PI/180) * 4./3.;
 			if(isBlockInSight(p, camera_pos, camera_dir, camera_fov, d_blocks_in_sight) == false)
 			{
 				continue;

src/clientmap.h

@@ -139,6 +139,8 @@ public:
 		return (m_last_drawn_sectors.find(p) != m_last_drawn_sectors.end());
 	}
 
+	const MapDrawControl & getControl() const { return m_control; }
+	f32 getCameraFov() const { return m_camera_fov; }
 private:
 	Client *m_client;
 	

src/content_sao.cpp

@@ -781,6 +781,8 @@ PlayerSAO::PlayerSAO(ServerEnvironment *env_, u16 peer_id_, bool is_singleplayer
 	m_attachment_sent(false),
 	m_breath(PLAYER_MAX_BREATH),
 	m_pitch(0),
+	m_fov(0),
+	m_wanted_range(0),
 	// public
 	m_physics_override_speed(1),
 	m_physics_override_jump(1),
@@ -1099,6 +1101,22 @@ void PlayerSAO::setYaw(const float yaw)
 	UnitSAO::setYaw(yaw);
 }
 
+void PlayerSAO::setFov(const float fov)
+{
+	if (m_player && fov != m_fov)
+		m_player->setDirty(true);
+
+	m_fov = fov;
+}
+
+void PlayerSAO::setWantedRange(const s16 range)
+{
+	if (m_player && range != m_wanted_range)
+		m_player->setDirty(true);
+
+	m_wanted_range = range;
+}
+
 void PlayerSAO::setYawAndSend(const float yaw)
 {
 	setYaw(yaw);

src/content_sao.h

@@ -214,6 +214,10 @@ public:
 	f32 getRadPitch() const { return m_pitch * core::DEGTORAD; }
 	// Deprecated
 	f32 getRadPitchDep() const { return -1.0 * m_pitch * core::DEGTORAD; }
+	void setFov(const float pitch);
+	f32 getFov() const { return m_fov; }
+	void setWantedRange(const s16 range);
+	s16 getWantedRange() const { return m_wanted_range; }
 
 	/*
 		Interaction interface
@@ -364,6 +368,8 @@ private:
 	bool m_attachment_sent;
 	u16 m_breath;
 	f32 m_pitch;
+	f32 m_fov;
+	s16 m_wanted_range;
 public:
 	float m_physics_override_speed;
 	float m_physics_override_jump;

src/localplayer.cpp

@@ -56,6 +56,8 @@ LocalPlayer::LocalPlayer(Client *gamedef, const char *name):
 	last_pitch(0),
 	last_yaw(0),
 	last_keyPressed(0),
+	last_camera_fov(0),
+	last_wanted_range(0),
 	camera_impact(0.f),
 	last_animation(NO_ANIM),
 	hotbar_image(""),

src/localplayer.h

@@ -75,6 +75,8 @@ public:
 	float last_pitch;
 	float last_yaw;
 	unsigned int last_keyPressed;
+	u8 last_camera_fov;
+	u8 last_wanted_range;
 
 	float camera_impact;
 

src/network/networkprotocol.h

@@ -651,6 +651,8 @@ enum ToServerCommand
 		[2+12+12] s32 pitch*100
 		[2+12+12+4] s32 yaw*100
 		[2+12+12+4+4] u32 keyPressed
+		[2+12+12+4+4+1] u8 fov*80
+		[2+12+12+4+4+4+1] u8 wanted_range / MAP_BLOCKSIZE
 	*/
 
 	TOSERVER_GOTBLOCKS = 0x24,

src/network/serverpackethandler.cpp

@@ -782,6 +782,7 @@ void Server::process_PlayerPos(RemotePlayer *player, PlayerSAO *playersao,
 
 	v3s32 ps, ss;
 	s32 f32pitch, f32yaw;
+	u8 f32fov;
 
 	*pkt >> ps;
 	*pkt >> ss;
@@ -792,8 +793,18 @@ void Server::process_PlayerPos(RemotePlayer *player, PlayerSAO *playersao,
 	f32 yaw = (f32)f32yaw / 100.0;
 	u32 keyPressed = 0;
 
+	// default behavior (in case an old client doesn't send these)
+	f32 fov = (72.0*M_PI/180) * 4./3.;
+	u8 wanted_range = 0;
+
 	if (pkt->getRemainingBytes() >= 4)
 		*pkt >> keyPressed;
+	if (pkt->getRemainingBytes() >= 1) {
+		*pkt >> f32fov;
+		fov = (f32)f32fov / 80.0;
+	}
+	if (pkt->getRemainingBytes() >= 1)
+		*pkt >> wanted_range;
 
 	v3f position((f32)ps.X / 100.0, (f32)ps.Y / 100.0, (f32)ps.Z / 100.0);
 	v3f speed((f32)ss.X / 100.0, (f32)ss.Y / 100.0, (f32)ss.Z / 100.0);
@@ -805,6 +816,8 @@ void Server::process_PlayerPos(RemotePlayer *player, PlayerSAO *playersao,
 	player->setSpeed(speed);
 	playersao->setPitch(pitch);
 	playersao->setYaw(yaw);
+	playersao->setFov(fov);
+	playersao->setWantedRange(wanted_range);
 	player->keyPressed = keyPressed;
 	player->control.up = (keyPressed & 1);
 	player->control.down = (keyPressed & 2);

src/server.cpp

@@ -705,11 +705,15 @@ void Server::AsyncRunStep(bool initial_step)
 			if (playersao == NULL)
 				continue;
 
+			s16 my_radius = MYMIN(radius, playersao->getWantedRange() * MAP_BLOCKSIZE);
+			if (my_radius <= 0) my_radius = radius;
+			//infostream << "Server: Active Radius " << my_radius << std::endl;
+
 			std::queue<u16> removed_objects;
 			std::queue<u16> added_objects;
-			m_env->getRemovedActiveObjects(playersao, radius, player_radius,
+			m_env->getRemovedActiveObjects(playersao, my_radius, player_radius,
 					client->m_known_objects, removed_objects);
-			m_env->getAddedActiveObjects(playersao, radius, player_radius,
+			m_env->getAddedActiveObjects(playersao, my_radius, player_radius,
 					client->m_known_objects, added_objects);
 
 			// Ignore if nothing happened