Player::getSpeed/setSpeed use const refs

Author: nerzhul

src/camera.cpp

@@ -526,7 +526,7 @@ void Camera::update(LocalPlayer* player, f32 frametime, f32 busytime,
 	// If the player is walking, swimming, or climbing,
 	// view bobbing is enabled and free_move is off,
 	// start (or continue) the view bobbing animation.
-	v3f speed = player->getSpeed();
+	const v3f &speed = player->getSpeed();
 	const bool movement_XZ = hypot(speed.X, speed.Z) > BS;
 	const bool movement_Y = fabs(speed.Y) > BS;
 

src/clientiface.cpp

@@ -95,7 +95,7 @@ void RemoteClient::GetNextBlocks (
 	}
 
 	v3f playerpos = sao->getBasePosition();
-	v3f playerspeed = player->getSpeed();
+	const v3f &playerspeed = player->getSpeed();
 	v3f playerspeeddir(0,0,0);
 	if(playerspeed.getLength() > 1.0*BS)
 		playerspeeddir = playerspeed / playerspeed.getLength();

src/player.h

@@ -104,12 +104,12 @@ class Player
 			std::vector<CollisionInfo> *collision_info)
 	{}
 
-	v3f getSpeed()
+	const v3f &getSpeed() const
 	{
 		return m_speed;
 	}
 
-	void setSpeed(v3f speed)
+	void setSpeed(const v3f &speed)
 	{
 		m_speed = speed;
 	}