(svn r16704) [0.7] -Backport from trunk:

- Fix: When SDL/Allegro fail to initialise, fall back on another video driver but not to the null driver (r16702, r16700, r16699)
- Fix: Limit the screen's resolution to 65535x65535 so the dirty pixels stay within bounds of a 32 bits integer [FS#3001] (r16701)
- Fix: Missing debug string for ESRB_SAFE_TILE in YAPF debugging helper [FS#3002] (r16690)
- Fix: When there is no AI version that can load data from the savegame, load the latest version of the same AI instead of a random AI (r16651, r16650, r16649)

docs/HOWTO_compile_lang_files.txt

@@ -1,7 +1,7 @@
 STRGEN USAGE
 ------------
 This guide is only interesting for people who want to alter something
-themselves without access to WT2 (translator2.openttd.org). Please note that
+themselves without access to translator.openttd.org. Please note that
 your compiled language file will only be compatible with the OpenTTD version
 you have downloaded english.txt, the master language file, for. While this is
 not always true, namely when changes in the code have not touched language

readme.txt

@@ -381,10 +381,8 @@ The following libraries are used by OpenTTD for:
 See http://www.openttd.org/development for up-to-date information.
 
 The use of the online Translator service, located at
-http://translator2.openttd.org/, is highly encouraged. For a username/password
+http://translator.openttd.org/, is highly encouraged. For getting an account
-combo you should contact the development team, either by mail, IRC or the
+simply follow the guidelines in the FAQ of the translator website.
-forums. The system is straightforward to use, and if you have any problems,
-read the online help located there.
 
 If for some reason the website is down for a longer period of time, the
 information below might be of help.

src/ai/ai_scanner.cpp

@@ -412,7 +412,7 @@ AIInfo *AIScanner::FindInfo(const char *nameParam, int versionParam)
 		snprintf(ai_name_compare, sizeof(ai_name_compare), "%s", (*it).second->GetName());
 		strtolower(ai_name_compare);
 
-		if (strcasecmp(ai_name, ai_name_compare) == 0 && (*it).second->CanLoadFromVersion(versionParam)) {
+		if (strcasecmp(ai_name, ai_name_compare) == 0 && (*it).second->CanLoadFromVersion(versionParam) && (version == -1 || (*it).second->GetVersion() > version)) {
 			version = (*it).second->GetVersion();
 			info = (*it).second;
 		}

src/debug.h

@@ -86,7 +86,7 @@ const char *GetDebugString();
 #define TOC(str, count)\
 	__sum__ += ottd_rdtsc() - _xxx_;\
 	if (++__i__ == count) {\
-		DEBUG(misc, 0, "[%s] %" OTTD_PRINTF64 "u [avg: %.1f]\n", str, __sum__, __sum__/(double)__i__);\
+		DEBUG(misc, 0, "[%s] " OTTD_PRINTF64 " [avg: %.1f]\n", str, __sum__, __sum__/(double)__i__);\
 		__i__ = 0;\
 		__sum__ = 0;\
 	}\

src/driver.cpp

@@ -61,8 +61,8 @@ const Driver *DriverFactoryBase::SelectDriver(const char *name, Driver::Type typ
 	if (GetDrivers().size() == 0) return NULL;
 
 	if (StrEmpty(name)) {
-		/* Probe for this driver */
+		/* Probe for this driver, but do not fall back to dedicated/null! */
-		for (int priority = 10; priority >= 0; priority--) {
+		for (int priority = 10; priority > 0; priority--) {
 			Drivers::iterator it = GetDrivers().begin();
 			for (; it != GetDrivers().end(); ++it) {
 				DriverFactoryBase *d = (*it).second;

src/music/allegro_m.cpp

@@ -18,15 +18,16 @@ extern int _allegro_instance_count;
 
 const char *MusicDriver_Allegro::Start(const char * const *param)
 {
-	if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, NULL)) return NULL;
+	if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, NULL)) return "Failed to set up Allegro";
 	_allegro_instance_count++;
 
 	/* Initialise the sound */
-	if (install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL) != 0) return NULL;
+	if (install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL) != 0) return "Failed to set up Allegro sound";
 
 	/* Okay, there's no soundcard */
 	if (midi_card == MIDI_NONE) {
 		DEBUG(driver, 0, "allegro: no midi card found");
+		return "No sound card found";
 	}
 
 	return NULL;

src/openttd.cpp

@@ -539,10 +539,13 @@ int ttd_main(int argc, char *argv[])
 	if (startyear != INVALID_YEAR) _settings_newgame.game_creation.starting_year = startyear;
 	if (generation_seed != GENERATE_NEW_SEED) _settings_newgame.game_creation.generation_seed = generation_seed;
 
-	/* The width and height must be at least 1 pixel, this
+	/*
-	 * way all internal drawing routines work correctly. */
+	 * The width and height must be at least 1 pixel and width times
-	if (_cur_resolution.width  <= 0) _cur_resolution.width  = 1;
+	 * height must still fit within a 32 bits integer, this way all
-	if (_cur_resolution.height <= 0) _cur_resolution.height = 1;
+	 * internal drawing routines work correctly.
+	 */
+	_cur_resolution.width  = ClampU(_cur_resolution.width,  1, UINT16_MAX);
+	_cur_resolution.height = ClampU(_cur_resolution.height, 1, UINT16_MAX);
 
 #if defined(ENABLE_NETWORK)
 	if (dedicated_host) snprintf(_settings_client.network.server_bind_ip, sizeof(_settings_client.network.server_bind_ip), "%s", dedicated_host);

src/saveload/ai_sl.cpp

@@ -69,6 +69,10 @@ static void Load_AIPL()
 			config->ChangeAI(NULL);
 		} else {
 			config->ChangeAI(_ai_saveload_name, _ai_saveload_version);
+			if (!config->HasAI()) {
+				/* No version of the AI available that can load the data. Try to load the
+				 * latest version of the AI instead. */
+				config->ChangeAI(_ai_saveload_name, -1);
 				if (!config->HasAI()) {
 					if (strcmp(_ai_saveload_name, "%_dummy") != 0) {
 						DEBUG(ai, 0, "The savegame has an AI by the name '%s', version %d which is no longer available.", _ai_saveload_name, _ai_saveload_version);
@@ -77,6 +81,10 @@ static void Load_AIPL()
 						DEBUG(ai, 0, "The savegame had no AIs available at the time of saving.");
 						DEBUG(ai, 0, "A random available AI will be loaded now.");
 					}
+				} else {
+					DEBUG(ai, 0, "The savegame has an AI by the name '%s', version %d which is no longer available.", _ai_saveload_name, _ai_saveload_version);
+					DEBUG(ai, 0, "The latest version of that AI has been loaded instead, but it'll not get the savegame data as it's incompatible.");
+				}
 				/* Make sure the AI doesn't get the saveload data, as he was not the
 				 *  writer of the saveload data in the first place */
 				_ai_saveload_version = -1;

src/sound/allegro_s.cpp

@@ -45,16 +45,16 @@ extern int _allegro_instance_count;
 
 const char *SoundDriver_Allegro::Start(const char * const *parm)
 {
-	if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, NULL)) return NULL;
+	if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, NULL)) return "Failed to set up Allegro";
 	_allegro_instance_count++;
 
 	/* Initialise the sound */
-	if (install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL) != 0) return NULL;
+	if (install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL) != 0) return "Failed to set up Allegro sound";
 
 	/* Okay, there's no soundcard */
 	if (digi_card == DIGI_NONE) {
 		DEBUG(driver, 0, "allegro: no sound card found");
-		return NULL;
+		return "No sound card found";
 	}
 
 	_stream = play_audio_stream(BUFFER_SIZE, 16, true, 11025, 255, 128);

src/video/allegro_v.cpp

@@ -404,7 +404,7 @@ int _allegro_instance_count = 0;
 
 const char *VideoDriver_Allegro::Start(const char * const *parm)
 {
-	if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, NULL)) return NULL;
+	if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, NULL)) return "Failed to set up Allegro";
 	_allegro_instance_count++;
 
 	install_timer();
@@ -425,7 +425,9 @@ const char *VideoDriver_Allegro::Start(const char * const *parm)
 #endif
 
 	GetVideoModes();
-	CreateMainSurface(_cur_resolution.width, _cur_resolution.height);
+	if (!CreateMainSurface(_cur_resolution.width, _cur_resolution.height)) {
+		return "Failed to set up Allegro video";
+	}
 	MarkWholeScreenDirty();
 	set_close_button_callback(HandleExitGameRequest);
 

src/video/null_v.h

@@ -27,7 +27,7 @@ public:
 
 class FVideoDriver_Null: public VideoDriverFactory<FVideoDriver_Null> {
 public:
-	static const int priority = 1;
+	static const int priority = 0;
 	/* virtual */ const char *GetName() { return "null"; }
 	/* virtual */ const char *GetDescription() { return "Null Video Driver"; }
 	/* virtual */ Driver *CreateInstance() { return new VideoDriver_Null(); }

src/video/sdl_v.cpp

@@ -426,11 +426,14 @@ const char *VideoDriver_SDL::Start(const char * const *parm)
 	const char *s = SdlOpen(SDL_INIT_VIDEO);
 	if (s != NULL) return s;
 
+	GetVideoModes();
+	if (!CreateMainSurface(_cur_resolution.width, _cur_resolution.height)) {
+		return SDL_CALL SDL_GetError();
+	}
+
 	SDL_CALL SDL_VideoDriverName(buf, 30);
 	DEBUG(driver, 1, "SDL: using driver '%s'", buf);
 
-	GetVideoModes();
-	CreateMainSurface(_cur_resolution.width, _cur_resolution.height);
 	MarkWholeScreenDirty();
 
 	SDL_CALL SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);

src/yapf/yapf_node_rail.hpp

@@ -114,7 +114,7 @@ inline CStrA ValueStr(EndSegmentReasonBits bits)
 {
 	static const char *end_segment_reason_names[] = {
 		"DEAD_END", "RAIL_TYPE", "INFINITE_LOOP", "SEGMENT_TOO_LONG", "CHOICE_FOLLOWS",
-		"DEPOT", "WAYPOINT", "STATION",
+		"DEPOT", "WAYPOINT", "STATION", "SAFE_TILE",
 		"PATH_TOO_LONG", "FIRST_TWO_WAY_RED", "LOOK_AHEAD_END", "TARGET_REACHED"
 	};