Refactor logging

- Add warning log level
- Change debug_log_level setting to enumeration string
- Map Irrlicht log events to MT log events
- Encapsulate log_* functions and global variables into a class, Logger
- Unify dstream with standard logging mechanism
- Unify core.debug() with standard core.log() script API

src/client/clientlauncher.cpp

@@ -89,7 +89,7 @@ bool ClientLauncher::run(GameParams &game_params, const Settings &cmd_args)
 	if (list_video_modes)
 		return print_video_modes();
 
-	if (!init_engine(game_params.log_level)) {
+	if (!init_engine()) {
 		errorstream << "Could not initialize game engine." << std::endl;
 		return false;
 	}
@@ -321,10 +321,10 @@ void ClientLauncher::init_args(GameParams &game_params, const Settings &cmd_args
 			|| cmd_args.getFlag("random-input");
 }
 
-bool ClientLauncher::init_engine(int log_level)
+bool ClientLauncher::init_engine()
 {
 	receiver = new MyEventReceiver();
-	create_engine_device(log_level);
+	create_engine_device();
 	return device != NULL;
 }
 
@@ -455,7 +455,7 @@ bool ClientLauncher::launch_game(std::string &error_message,
 
 		if (game_params.game_spec.isValid() &&
 				game_params.game_spec.id != worldspec.gameid) {
-			errorstream << "WARNING: Overriding gamespec from \""
+			warningstream << "Overriding gamespec from \""
 			            << worldspec.gameid << "\" to \""
 			            << game_params.game_spec.id << "\"" << std::endl;
 			gamespec = game_params.game_spec;
@@ -500,20 +500,8 @@ void ClientLauncher::main_menu(MainMenuData *menudata)
 	smgr->clear();	/* leave scene manager in a clean state */
 }
 
-bool ClientLauncher::create_engine_device(int log_level)
+bool ClientLauncher::create_engine_device()
 {
-	static const irr::ELOG_LEVEL irr_log_level[5] = {
-		ELL_NONE,
-		ELL_ERROR,
-		ELL_WARNING,
-		ELL_INFORMATION,
-#if (IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR < 8)
-		ELL_INFORMATION
-#else
-		ELL_DEBUG
-#endif
-	};
-
 	// Resolution selection
 	bool fullscreen = g_settings->getBool("fullscreen");
 	u16 screenW = g_settings->getU16("screenW");
@@ -561,10 +549,6 @@ bool ClientLauncher::create_engine_device(int log_level)
 	device = createDeviceEx(params);
 
 	if (device) {
-		// Map our log level to irrlicht engine one.
-		ILogger* irr_logger = device->getLogger();
-		irr_logger->setLogLevel(irr_log_level[log_level]);
-
 		porting::initIrrlicht(device);
 	}
 

src/client/clientlauncher.h

@@ -90,13 +90,13 @@ public:
 
 protected:
 	void init_args(GameParams &game_params, const Settings &cmd_args);
-	bool init_engine(int log_level);
+	bool init_engine();
 
 	bool launch_game(std::string &error_message, bool reconnect_requested,
 		GameParams &game_params, const Settings &cmd_args);
 
 	void main_menu(MainMenuData *menudata);
-	bool create_engine_device(int log_level);
+	bool create_engine_device();
 
 	void speed_tests();
 	bool print_video_modes();

src/client/inputhandler.h

@@ -17,8 +17,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
-#ifndef __INPUT_HANDLER_H__
-#define __INPUT_HANDLER_H__
+#ifndef INPUT_HANDLER_H
+#define INPUT_HANDLER_H
 
 #include "irrlichttypes_extrabloated.h"
 
@@ -86,16 +86,16 @@ public:
 				}
 			}
 		} else if (event.EventType == irr::EET_LOG_TEXT_EVENT) {
-			static const enum LogMessageLevel irr_loglev_conv[] = {
-				LMT_VERBOSE, // ELL_DEBUG
-				LMT_INFO,    // ELL_INFORMATION
-				LMT_ACTION,  // ELL_WARNING
-				LMT_ERROR,   // ELL_ERROR
-				LMT_ERROR,   // ELL_NONE
+			static const LogLevel irr_loglev_conv[] = {
+				LL_VERBOSE, // ELL_DEBUG
+				LL_INFO,    // ELL_INFORMATION
+				LL_WARNING, // ELL_WARNING
+				LL_ERROR,   // ELL_ERROR
+				LL_NONE,    // ELL_NONE
 			};
 			assert(event.LogEvent.Level < ARRLEN(irr_loglev_conv));
-			log_printline(irr_loglev_conv[event.LogEvent.Level],
-				std::string("Irrlicht: ") + (const char *)event.LogEvent.Text);
+			g_logger.log(irr_loglev_conv[event.LogEvent.Level],
+				std::string("Irrlicht: ") + (const char*) event.LogEvent.Text);
 			return true;
 		}
 		/* always return false in order to continue processing events */