Fix unused (and so, broken) enable_rollback_recording. This option must be reloaded at server loop but loaded when server starts, for data consistency (not a hot load variable)

ok @ShadowNinja

3 files changed, 18 insertions, 9 deletions

diff --git a/src/map.cpp b/src/map.cpp
index 0877d8c8e..a9ff22c32 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -1857,11 +1857,11 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> & modified_blocks)
 
 		// Find out whether there is a suspect for this action
 		std::string suspect;
-		if(m_gamedef->rollback()){
+		if(m_gamedef->rollback()) {
 			suspect = m_gamedef->rollback()->getSuspect(p0, 83, 1);
 		}
 
-		if(!suspect.empty()){
+		if(m_gamedef->rollback() && !suspect.empty()){
 			// Blame suspect
 			RollbackScopeActor rollback_scope(m_gamedef->rollback(), suspect, true);
 			// Get old node for rollback
diff --git a/src/script/lua_api/l_rollback.cpp b/src/script/lua_api/l_rollback.cpp
index f55a72d1b..5744e6813 100644
--- a/src/script/lua_api/l_rollback.cpp
+++ b/src/script/lua_api/l_rollback.cpp
@@ -44,6 +44,9 @@ int ModApiRollback::l_rollback_get_node_actions(lua_State *L)
 	int limit = luaL_checknumber(L, 4);
 	Server *server = getServer(L);
 	IRollbackManager *rollback = server->getRollbackManager();
+	if (rollback == NULL) {
+		return 0;
+	}
 
 	std::list<RollbackAction> actions = rollback->getNodeActors(pos, range, seconds, limit);
 	std::list<RollbackAction>::iterator iter = actions.begin();
@@ -80,6 +83,13 @@ int ModApiRollback::l_rollback_revert_actions_by(lua_State *L)
 	int seconds = luaL_checknumber(L, 2);
 	Server *server = getServer(L);
 	IRollbackManager *rollback = server->getRollbackManager();
+
+	// If rollback is disabled, tell it's not a success.
+	if (rollback == NULL) {
+		lua_pushboolean(L, false);
+		lua_newtable(L);
+		return 2;
+	}
 	std::list<RollbackAction> actions = rollback->getRevertActions(actor, seconds);
 	std::list<std::string> log;
 	bool success = server->rollbackRevertActions(actions, &log);
diff --git a/src/server.cpp b/src/server.cpp
index a118e15dd..a75e27456 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -243,9 +243,6 @@ Server::Server(
 	std::string ban_path = m_path_world + DIR_DELIM "ipban.txt";
 	m_banmanager = new BanManager(ban_path);
 
-	// Create rollback manager
-	m_rollback = new RollbackManager(m_path_world, this);
-
 	ModConfiguration modconf(m_path_world);
 	m_mods = modconf.getMods();
 	std::vector<ModSpec> unsatisfied_mods = modconf.getUnsatisfiedMods();
@@ -353,6 +350,12 @@ Server::Server(
 	// Initialize mapgens
 	m_emerge->initMapgens();
 
+	m_enable_rollback_recording = g_settings->getBool("enable_rollback_recording");
+	if (m_enable_rollback_recording) {
+		// Create rollback manager
+		m_rollback = new RollbackManager(m_path_world, this);
+	}
+
 	// Give environment reference to scripting api
 	m_script->initializeEnvironment(m_env);
 
@@ -1068,10 +1071,6 @@ void Server::AsyncRunStep(bool initial_step)
 			counter = 0.0;
 
 			m_emerge->startThreads();
-
-			// Update m_enable_rollback_recording here too
-			m_enable_rollback_recording =
-					g_settings->getBool("enable_rollback_recording");
 		}
 	}