Don't apply player movement cheat detection in singleplayer

src/content_sao.cpp

@@ -748,7 +748,7 @@ void LuaEntitySAO::sendPosition(bool do_interpolate, bool is_movement_end)
 // No prototype, PlayerSAO does not need to be deserialized
 
 PlayerSAO::PlayerSAO(ServerEnvironment *env_, Player *player_, u16 peer_id_,
-		const std::set<std::string> &privs):
+		const std::set<std::string> &privs, bool is_singleplayer):
 	ServerActiveObject(env_, v3f(0,0,0)),
 	m_player(player_),
 	m_peer_id(peer_id_),
@@ -761,6 +761,7 @@ PlayerSAO::PlayerSAO(ServerEnvironment *env_, Player *player_, u16 peer_id_,
 	m_armor_groups_sent(false),
 	m_properties_sent(true),
 	m_privs(privs),
+	m_is_singleplayer(is_singleplayer),
 	// public
 	m_teleported(false),
 	m_inventory_not_sent(false),
@@ -866,6 +867,8 @@ void PlayerSAO::step(float dtime, bool send_recommended)
 
 	m_time_from_last_punch += dtime;
 	
+	if(!m_is_singleplayer)
+	{
 		/*
 			Check player movements
 
@@ -911,6 +914,7 @@ void PlayerSAO::step(float dtime, bool send_recommended)
 			}
 			m_last_good_position_age = 0;
 		}
+	}
 
 	if(send_recommended == false)
 		return;

src/content_sao.h

@@ -106,7 +106,7 @@ class PlayerSAO : public ServerActiveObject
 {
 public:
 	PlayerSAO(ServerEnvironment *env_, Player *player_, u16 peer_id_,
-			const std::set<std::string> &privs);
+			const std::set<std::string> &privs, bool is_singleplayer);
 	~PlayerSAO();
 	u8 getType() const
 	{ return ACTIVEOBJECT_TYPE_PLAYER; }
@@ -183,9 +183,11 @@ public:
 		m_time_from_last_punch = 0.0;
 		return r;
 	}
-	void updatePrivileges(const std::set<std::string> &privs)
+	void updatePrivileges(const std::set<std::string> &privs,
+			bool is_singleplayer)
 	{
 		m_privs = privs;
+		m_is_singleplayer = is_singleplayer;
 	}
 
 private:
@@ -205,6 +207,7 @@ private:
 	struct ObjectProperties m_prop;
 	// Cached privileges for enforcement
 	std::set<std::string> m_privs;
+	bool m_is_singleplayer;
 
 public:
 	// Some flags used by Server

src/server.cpp

@@ -4323,7 +4323,8 @@ void Server::reportPrivsModified(const std::string &name)
 			return;
 		SendPlayerPrivileges(player->peer_id);
 		player->getPlayerSAO()->updatePrivileges(
-				getPlayerEffectivePrivs(name));
+				getPlayerEffectivePrivs(name),
+				isSingleplayer());
 	}
 }
 
@@ -4527,7 +4528,8 @@ PlayerSAO* Server::emergePlayer(const char *name, u16 peer_id)
 		Create a new player active object
 	*/
 	PlayerSAO *playersao = new PlayerSAO(m_env, player, peer_id,
-			getPlayerEffectivePrivs(player->getName()));
+			getPlayerEffectivePrivs(player->getName()),
+			isSingleplayer());
 
 	/* Add object to environment */
 	m_env->addActiveObject(playersao);