(svn r2397) - CodeChange: rename all "ttd" files to "openttd" files.

1 files changed, 0 insertions, 1415 deletions

diff --git a/ttd.c b/ttd.c
deleted file mode 100644
index ba8f241f0..000000000
--- a/ttd.c
+++ /dev/null
@@ -1,1415 +0,0 @@
-#include "stdafx.h"
-#include "string.h"
-#include "table/strings.h"
-#include "debug.h"
-#include "strings.h"
-#include "map.h"
-#include "tile.h"
-
-#define VARDEF
-#include "ttd.h"
-#include "mixer.h"
-#include "spritecache.h"
-#include "gfx.h"
-#include "gui.h"
-#include "station.h"
-#include "vehicle.h"
-#include "viewport.h"
-#include "window.h"
-#include "player.h"
-#include "command.h"
-#include "town.h"
-#include "industry.h"
-#include "news.h"
-#include "engine.h"
-#include "sound.h"
-#include "economy.h"
-#include "fileio.h"
-#include "hal.h"
-#include "airport.h"
-#include "ai.h"
-#include "console.h"
-#include "screenshot.h"
-#include "network.h"
-#include "signs.h"
-#include "depot.h"
-#include "waypoint.h"
-
-#include <stdarg.h>
-
-void GenerateWorld(int mode, uint log_x, uint log_y);
-void CallLandscapeTick(void);
-void IncreaseDate(void);
-void RunOtherPlayersLoop(void);
-void DoPaletteAnimations(void);
-void MusicLoop(void);
-void ResetMusic(void);
-void InitializeStations(void);
-void DeleteAllPlayerStations(void);
-
-extern void SetDifficultyLevel(int mode, GameOptions *gm_opt);
-extern void DoStartupNewPlayer(bool is_ai);
-extern void ShowOSErrorBox(const char *buf);
-
-bool LoadSavegame(const char *filename);
-
-extern void HalGameLoop(void);
-
-uint32 _pixels_redrawn;
-bool _dbg_screen_rect;
-bool disable_computer; // We should get ride of this thing.. is only used for a debug-cheat
-static byte _os_version = 0;
-
-/* TODO: usrerror() for errors which are not of an internal nature but
- * caused by the user, i.e. missing files or fatal configuration errors.
- * Post-0.4.0 since Celestar doesn't want this in SVN before. --pasky */
-
-void CDECL error(const char *s, ...) {
-	va_list va;
-	char buf[512];
-	va_start(va, s);
-	vsprintf(buf, s, va);
-	va_end(va);
-
-	ShowOSErrorBox(buf);
-	if (_video_driver)
-		_video_driver->stop();
-
-	assert(0);
-	exit(1);
-}
-
-void CDECL ShowInfoF(const char *str, ...)
-{
-	va_list va;
-	char buf[1024];
-	va_start(va, str);
-	vsprintf(buf, str, va);
-	va_end(va);
-	ShowInfo(buf);
-}
-
-char * CDECL str_fmt(const char *str, ...)
-{
-	char buf[4096];
-	va_list va;
-	int len;
-	char *p;
-
-	va_start(va, str);
-	len = vsprintf(buf, str, va);
-	va_end(va);
-	p = malloc(len + 1);
-	if (p)
-		memcpy(p, buf, len + 1);
-	return p;
-}
-
-
-// NULL midi driver
-static const char *NullMidiStart(const char * const *parm) { return NULL; }
-static void NullMidiStop(void) {}
-static void NullMidiPlaySong(const char *filename) {}
-static void NullMidiStopSong(void) {}
-static bool NullMidiIsSongPlaying(void) { return true; }
-static void NullMidiSetVolume(byte vol) {}
-
-const HalMusicDriver _null_music_driver = {
-	NullMidiStart,
-	NullMidiStop,
-	NullMidiPlaySong,
-	NullMidiStopSong,
-	NullMidiIsSongPlaying,
-	NullMidiSetVolume,
-};
-
-// NULL video driver
-static void *_null_video_mem;
-static const char *NullVideoStart(const char * const *parm)
-{
-	_screen.width = _screen.pitch = _cur_resolution[0];
-	_screen.height = _cur_resolution[1];
-	_null_video_mem = malloc(_cur_resolution[0]*_cur_resolution[1]);
-	return NULL;
-}
-static void NullVideoStop(void) { free(_null_video_mem); }
-static void NullVideoMakeDirty(int left, int top, int width, int height) {}
-static int NullVideoMainLoop(void)
-{
-	int i = 1000;
-	do {
-		GameLoop();
-		_screen.dst_ptr = _null_video_mem;
-		UpdateWindows();
-	}	while (--i);
-	return ML_QUIT;
-}
-
-static bool NullVideoChangeRes(int w, int h) { return false; }
-static void NullVideoFullScreen(bool fs) {}
-
-const HalVideoDriver _null_video_driver = {
-	NullVideoStart,
-	NullVideoStop,
-	NullVideoMakeDirty,
-	NullVideoMainLoop,
-	NullVideoChangeRes,
-	NullVideoFullScreen,
-};
-
-// NULL sound driver
-static const char *NullSoundStart(const char * const *parm) { return NULL; }
-static void NullSoundStop(void) {}
-const HalSoundDriver _null_sound_driver = {
-	NullSoundStart,
-	NullSoundStop,
-};
-
-enum {
-	DF_PRIORITY_MASK = 0xf,
-};
-
-typedef struct {
-	const DriverDesc *descs;
-	const char *name;
-	void *var;
-} DriverClass;
-
-static DriverClass _driver_classes[] = {
-	{_video_driver_descs, "video", &_video_driver},
-	{_sound_driver_descs, "sound", &_sound_driver},
-	{_music_driver_descs, "music", &_music_driver},
-};
-
-static const DriverDesc *GetDriverByName(const DriverDesc *dd, const char *name)
-{
-	do {
-		if (!strcmp(dd->name, name))
-			return dd;
-	} while ((++dd)->name);
-	return NULL;
-}
-
-static const DriverDesc *ChooseDefaultDriver(const DriverDesc *dd)
-{
-	const DriverDesc *best = NULL;
-	int best_pri = -1;
-	do {
-		if ((int)(dd->flags&DF_PRIORITY_MASK) > best_pri && _os_version >= (byte)dd->flags) {
-			best_pri = dd->flags&DF_PRIORITY_MASK;
-			best = dd;
-		}
-	} while ((++dd)->name);
-	return best;
-}
-
-
-void *ReadFileToMem(const char *filename, size_t *lenp, size_t maxsize)
-{
-	FILE *in;
-	byte *mem;
-	size_t len;
-
-	in = fopen(filename, "rb");
-	if (in == NULL)
-		return NULL;
-
-	fseek(in, 0, SEEK_END);
-	len = ftell(in);
-	fseek(in, 0, SEEK_SET);
-	if (len > maxsize || (mem = malloc(len + 1)) == NULL) {
-		fclose(in);
-		return NULL;
-	}
-	mem[len] = 0;
-	if (fread(mem, len, 1, in) != 1) {
-		fclose(in);
-		free(mem);
-		return NULL;
-	}
-	fclose(in);
-
-	*lenp = len;
-	return mem;
-}
-
-void LoadDriver(int driver, const char *name)
-{
-	const DriverClass *dc = &_driver_classes[driver];
-	const DriverDesc *dd;
-	const void **var;
-	const void *drv;
-	const char *err;
-	char *parm;
-	char buffer[256];
-	const char *parms[32];
-
-	parms[0] = NULL;
-
-	if (!*name) {
-		dd = ChooseDefaultDriver(dc->descs);
-	} else {
-		// Extract the driver name and put parameter list in parm
-		ttd_strlcpy(buffer, name, sizeof(buffer));
-		parm = strchr(buffer, ':');
-		if (parm) {
-			uint np = 0;
-			// Tokenize the parm.
-			do {
-				*parm++ = 0;
-				if (np < lengthof(parms) - 1)
-					parms[np++] = parm;
-				while (*parm != 0 && *parm != ',')
-					parm++;
-			} while (*parm == ',');
-			parms[np] = NULL;
-		}
-		dd = GetDriverByName(dc->descs, buffer);
-		if (dd == NULL)
-			error("No such %s driver: %s\n", dc->name, buffer);
-	}
-	var = dc->var;
-	if (*var != NULL) ((const HalCommonDriver*)*var)->stop();
-	*var = NULL;
-	drv = dd->drv;
-	if ((err=((const HalCommonDriver*)drv)->start(parms)) != NULL)
-		error("Unable to load driver %s(%s). The error was: %s\n", dd->name, dd->longname, err);
-	*var = drv;
-}
-
-static void showhelp(void)
-{
-	char buf[4096], *p;
-	const DriverClass *dc = _driver_classes;
-	const DriverDesc *dd;
-	int i;
-
-	p = strecpy(buf,
-		"Command line options:\n"
-		"  -v drv              = Set video driver (see below)\n"
-		"  -s drv              = Set sound driver (see below)\n"
-		"  -m drv              = Set music driver (see below)\n"
-		"  -r res              = Set resolution (for instance 800x600)\n"
-		"  -h                  = Display this help text\n"
-		"  -t date             = Set starting date\n"
-		"  -d [[fac=]lvl[,...]]= Debug mode\n"
-		"  -l lng              = Select Language\n"
-		"  -e                  = Start Editor\n"
-		"  -g [savegame]       = Start new/save game immediately\n"
-		"  -G seed             = Set random seed\n"
-		"  -n [ip#player:port] = Start networkgame\n"
-		"  -D                  = Start dedicated server\n"
-		#if !defined(__MORPHOS__) && !defined(__AMIGA__)
-		"  -f                  = Fork into the background (dedicated only)\n"
-		#endif
-		"  -i                  = Force to use the DOS palette (use this if you see a lot of pink)\n"
-		"  -p #player          = Player as #player (deprecated) (network only)\n"
-		"  -c config_file      = Use 'config_file' instead of 'openttd.cfg'\n",
-		lastof(buf)
-	);
-
-	for(i=0; i!=lengthof(_driver_classes); i++,dc++) {
-		p += sprintf(p, "List of %s drivers:\n", dc->name);
-		dd = dc->descs;
-		do {
-			p += sprintf(p, "%10s: %s\n", dd->name, dd->longname);
-		} while ((++dd)->name);
-	}
-
-	ShowInfo(buf);
-}
-
-
-const char *GetDriverParam(const char * const *parm, const char *name)
-{
-	const char *p;
-	int len = strlen(name);
-	while ((p = *parm++) != NULL) {
-		if (!strncmp(p,name,len)) {
-			if (p[len] == '=') return p + len + 1;
-			if (p[len] == 0)   return p + len;
-		}
-	}
-	return NULL;
-}
-
-bool GetDriverParamBool(const char * const *parm, const char *name)
-{
-	const char *p = GetDriverParam(parm, name);
-	return p != NULL;
-}
-
-int GetDriverParamInt(const char * const *parm, const char *name, int def)
-{
-	const char *p = GetDriverParam(parm, name);
-	return p != NULL ? atoi(p) : def;
-}
-
-typedef struct {
-	char *opt;
-	int numleft;
-	char **argv;
-	const char *options;
-	char *cont;
-} MyGetOptData;
-
-static void MyGetOptInit(MyGetOptData *md, int argc, char **argv, const char *options)
-{
-	md->cont = NULL;
-	md->numleft = argc;
-	md->argv = argv;
-	md->options = options;
-}
-
-static int MyGetOpt(MyGetOptData *md)
-{
-	char *s,*r,*t;
-
-	if ((s=md->cont) != NULL)
-		goto md_continue_here;
-
-	while(true) {
-		if (--md->numleft < 0)
-			return -1;
-
-		s = *md->argv++;
-		if (*s == '-') {
-md_continue_here:;
-			s++;
-			if (*s != 0) {
-				// Found argument, try to locate it in options.
-				if (*s == ':' || (r = strchr(md->options, *s)) == NULL) {
-					// ERROR!
-					return -2;
-				}
-				if (r[1] == ':') {
-					// Item wants an argument. Check if the argument follows, or if it comes as a separate arg.
-					if (!*(t = s + 1)) {
-						// It comes as a separate arg. Check if out of args?
-						if (--md->numleft < 0 || *(t = *md->argv) == '-') {
-							// Check if item is optional?
-							if (r[2] != ':')
-								return -2;
-							md->numleft++;
-							t = NULL;
-						} else {
-							md->argv++;
-						}
-					}
-					md->opt = t;
-					md->cont = NULL;
-					return *s;
-				}
-				md->opt = NULL;
-				md->cont = s;
-				return *s;
-			}
-		} else {
-			// This is currently not supported.
-			return -2;
-		}
-	}
-}
-
-
-static void ParseResolution(int res[2], char *s)
-{
-	char *t = strchr(s, 'x');
-	if (t == NULL) {
-		ShowInfoF("Invalid resolution '%s'", s);
-		return;
-	}
-
-	res[0] = clamp(strtoul(s, NULL, 0), 64, MAX_SCREEN_WIDTH);
-	res[1] = clamp(strtoul(t + 1, NULL, 0), 64, MAX_SCREEN_HEIGHT);
-}
-
-static void InitializeDynamicVariables(void)
-{
-	/* Dynamic stuff needs to be initialized somewhere... */
-	_station_sort  = NULL;
-	_vehicle_sort  = NULL;
-	_town_sort     = NULL;
-	_industry_sort = NULL;
-}
-
-static void UnInitializeDynamicVariables(void)
-{
-	/* Dynamic stuff needs to be free'd somewhere... */
-	CleanPool(&_town_pool);
-	CleanPool(&_industry_pool);
-	CleanPool(&_station_pool);
-	CleanPool(&_vehicle_pool);
-	CleanPool(&_sign_pool);
-	CleanPool(&_order_pool);
-
-	free(_station_sort);
-	free(_vehicle_sort);
-	free(_town_sort);
-	free(_industry_sort);
-}
-
-static void UnInitializeGame(void)
-{
-	UnInitWindowSystem();
-	UnInitNewgrEngines();
-
-	free(_config_file);
-}
-
-static void LoadIntroGame(void)
-{
-	char filename[256];
-
-	_game_mode = GM_MENU;
-	CLRBITS(_display_opt, DO_TRANS_BUILDINGS); // don't make buildings transparent in intro
-	_opt_ptr = &_opt_newgame;
-
-	GfxLoadSprites();
-	LoadStringWidthTable();
-
-	// Setup main window
-	ResetWindowSystem();
-	SetupColorsAndInitialWindow();
-
-	// Generate a world.
-	sprintf(filename, "%sopntitle.dat",  _path.data_dir);
-	if (SaveOrLoad(filename, SL_LOAD) != SL_OK) {
-#if defined SECOND_DATA_DIR
-		sprintf(filename, "%sopntitle.dat",  _path.second_data_dir);
-		if (SaveOrLoad(filename, SL_LOAD) != SL_OK)
-#endif
-			GenerateWorld(1, 6, 6); // if failed loading, make empty world.
-	}
-
-	_pause = 0;
-	_local_player = 0;
-	MarkWholeScreenDirty();
-
-	// Play main theme
-	if (_music_driver->is_song_playing()) ResetMusic();
-}
-
-extern void DedicatedFork(void);
-extern void CheckExternalFiles(void);
-
-int ttd_main(int argc, char* argv[])
-{
-	MyGetOptData mgo;
-	int i;
-	bool network = false;
-	char *network_conn = NULL;
-	char *language = NULL;
-	const char *optformat;
-	char musicdriver[16], sounddriver[16], videodriver[16];
-	int resolution[2] = {0,0};
-	uint startdate = -1;
-	bool dedicated;
-
-	musicdriver[0] = sounddriver[0] = videodriver[0] = 0;
-
-	_game_mode = GM_MENU;
-	_switch_mode = SM_MENU;
-	_switch_mode_errorstr = INVALID_STRING_ID;
-	_dedicated_forks = false;
-	dedicated = false;
-	_config_file = NULL;
-
-	// The last param of the following function means this:
-	//   a letter means: it accepts that param (e.g.: -h)
-	//   a ':' behind it means: it need a param (e.g.: -m<driver>)
-	//   a '::' behind it means: it can optional have a param (e.g.: -d<debug>)
-	#if !defined(__MORPHOS__) && !defined(__AMIGA__) && !defined(WIN32)
-		optformat = "m:s:v:hDfn::l:eit:d::r:g::G:p:c:";
-	#else
-		optformat = "m:s:v:hDn::l:eit:d::r:g::G:p:c:"; // no fork option
-	#endif
-
-	MyGetOptInit(&mgo, argc-1, argv+1, optformat);
-	while ((i = MyGetOpt(&mgo)) != -1) {
-		switch(i) {
-		case 'm': ttd_strlcpy(musicdriver, mgo.opt, sizeof(musicdriver)); break;
-		case 's': ttd_strlcpy(sounddriver, mgo.opt, sizeof(sounddriver)); break;
-		case 'v': ttd_strlcpy(videodriver, mgo.opt, sizeof(videodriver)); break;
-		case 'D': {
-				sprintf(musicdriver,"null");
-				sprintf(sounddriver,"null");
-				sprintf(videodriver,"dedicated");
-				dedicated = true;
-			} break;
-		case 'f': {
-				_dedicated_forks = true;
-			}; break;
-		case 'n': {
-				network = true;
-				if (mgo.opt)
-					// Optional, you can give an IP
-					network_conn = mgo.opt;
-				else
-					network_conn = NULL;
-			} break;
-		case 'r': ParseResolution(resolution, mgo.opt); break;
-		case 'l': {
-				language = mgo.opt;
-			} break;
-		case 't': {
-				startdate = atoi(mgo.opt);
-			} break;
-		case 'd': {
-#if defined(WIN32)
-				CreateConsole();
-#endif
-				if (mgo.opt)
-					SetDebugString(mgo.opt);
-			} break;
-		case 'e': _switch_mode = SM_EDITOR; break;
-		case 'i': _use_dos_palette = true; break;
-		case 'g':
-			if (mgo.opt) {
-				strcpy(_file_to_saveload.name, mgo.opt);
-				_switch_mode = SM_LOAD;
-			} else
-				_switch_mode = SM_NEWGAME;
-			break;
-		case 'G':
-			_random_seeds[0][0] = atoi(mgo.opt);
-			break;
-		case 'p': {
-			int i = atoi(mgo.opt);
-			// Play as an other player in network games
-			if (IS_INT_INSIDE(i, 1, MAX_PLAYERS)) _network_playas = i;
-			break;
-		}
-		case 'c':
-			_config_file = strdup(mgo.opt);
-			break;
-		case -2:
- 		case 'h':
-			showhelp();
-			return 0;
-		}
-	}
-
-	DeterminePaths();
-	CheckExternalFiles();
-
-#ifdef UNIX
-	// We must fork here, or we'll end up without some resources we need (like sockets)
-	if (_dedicated_forks)
-		DedicatedFork();
-#endif
-
-	LoadFromConfig();
-	CheckConfig();
-	LoadFromHighScore();
-
-	// override config?
-	if (musicdriver[0]) ttd_strlcpy(_ini_musicdriver, musicdriver, sizeof(_ini_musicdriver));
-	if (sounddriver[0]) ttd_strlcpy(_ini_sounddriver, sounddriver, sizeof(_ini_sounddriver));
-	if (videodriver[0]) ttd_strlcpy(_ini_videodriver, videodriver, sizeof(_ini_videodriver));
-	if (resolution[0]) { _cur_resolution[0] = resolution[0]; _cur_resolution[1] = resolution[1]; }
-	if (startdate != (uint)-1) _patches.starting_date = startdate;
-
-	if (_dedicated_forks && !dedicated)
-		_dedicated_forks = false;
-
-	// enumerate language files
-	InitializeLanguagePacks();
-
-	// initialize screenshot formats
-	InitializeScreenshotFormats();
-
-	// initialize airport state machines
-	InitializeAirports();
-
-	/* initialize all variables that are allocated dynamically */
-	InitializeDynamicVariables();
-
-	// Sample catalogue
-	DEBUG(misc, 1) ("Loading sound effects...");
-	_os_version = GetOSVersion();
-	MxInitialize(11025);
-	SoundInitialize("sample.cat");
-
-	// This must be done early, since functions use the InvalidateWindow* calls
-	InitWindowSystem();
-
-	GfxLoadSprites();
-	LoadStringWidthTable();
-
-	DEBUG(misc, 1) ("Loading drivers...");
-	LoadDriver(SOUND_DRIVER, _ini_sounddriver);
-	LoadDriver(MUSIC_DRIVER, _ini_musicdriver);
-	LoadDriver(VIDEO_DRIVER, _ini_videodriver); // load video last, to prevent an empty window while sound and music loads
-	_savegame_sort_order = 1; // default sorting of savegames is by date, newest first
-
-#ifdef ENABLE_NETWORK
-	// initialize network-core
-	NetworkStartUp();
-#endif /* ENABLE_NETWORK */
-
-	_opt_ptr = &_opt_newgame;
-
-	/* XXX - ugly hack, if diff_level is 9, it means we got no setting from the config file */
-	if (_opt_newgame.diff_level == 9)
-		SetDifficultyLevel(0, &_opt_newgame);
-
-	// initialize the ingame console
-	IConsoleInit();
-	InitializeGUI();
-	IConsoleCmdExec("exec scripts/autoexec.scr 0");
-
-	InitPlayerRandoms();
-
-	GenerateWorld(1, 6, 6); // Make the viewport initialization happy
-
-#ifdef ENABLE_NETWORK
-	if ((network) && (_network_available)) {
-		if (network_conn != NULL) {
-			const char *port = NULL;
-			const char *player = NULL;
-			uint16 rport;
-
-			rport = NETWORK_DEFAULT_PORT;
-
-			ParseConnectionString(&player, &port, network_conn);
-
-			if (player != NULL) _network_playas = atoi(player);
-			if (port != NULL) rport = atoi(port);
-
-			LoadIntroGame();
-			_switch_mode = SM_NONE;
-			NetworkClientConnectGame(network_conn, rport);
-		}
-	}
-#endif /* ENABLE_NETWORK */
-
-	while (_video_driver->main_loop() == ML_SWITCHDRIVER) {}
-
-	JoinOTTDThread();
-	IConsoleFree();
-
-#ifdef ENABLE_NETWORK
-	if (_network_available) {
-		// Shut down the network and close any open connections
-		NetworkDisconnect();
-		NetworkUDPClose();
-		NetworkShutDown();
-	}
-#endif /* ENABLE_NETWORK */
-
-	_video_driver->stop();
-	_music_driver->stop();
-	_sound_driver->stop();
-
-	SaveToConfig();
-	SaveToHighScore();
-
-	// uninitialize airport state machines
-	UnInitializeAirports();
-
-	/* uninitialize variables that are allocated dynamic */
-	UnInitializeDynamicVariables();
-
-	/* Close all and any open filehandles */
-	FioCloseAll();
-	UnInitializeGame();
-
-	return 0;
-}
-
-static void ShowScreenshotResult(bool b)
-{
-	if (b) {
-		SetDParam(0, STR_SPEC_SCREENSHOT_NAME);
-		ShowErrorMessage(INVALID_STRING_ID, STR_031B_SCREENSHOT_SUCCESSFULLY, 0, 0);
-	} else {
-		ShowErrorMessage(INVALID_STRING_ID, STR_031C_SCREENSHOT_FAILED, 0, 0);
-	}
-
-}
-
-static void MakeNewGame(void)
-{
-	_game_mode = GM_NORMAL;
-
-	// Copy in game options
-	_opt_ptr = &_opt;
-	memcpy(_opt_ptr, &_opt_newgame, sizeof(GameOptions));
-
-	GfxLoadSprites();
-
-	// Reinitialize windows
-	ResetWindowSystem();
-	LoadStringWidthTable();
-
-	SetupColorsAndInitialWindow();
-
-	// Randomize world
-	GenerateWorld(0, _patches.map_x, _patches.map_y);
-
-	// In a dedicated server, the server does not play
-	if (_network_dedicated) {
-		_local_player = OWNER_SPECTATOR;
-	}	else {
-		// Create a single player
-		DoStartupNewPlayer(false);
-
-		_local_player = 0;
-	}
-
-	MarkWholeScreenDirty();
-}
-
-static void MakeNewEditorWorld(void)
-{
-	_game_mode = GM_EDITOR;
-
-	// Copy in game options
-	_opt_ptr = &_opt;
-	memcpy(_opt_ptr, &_opt_newgame, sizeof(GameOptions));
-
-	GfxLoadSprites();
-
-	// Re-init the windowing system
-	ResetWindowSystem();
-
-	// Create toolbars
-	SetupColorsAndInitialWindow();
-
-	// Startup the game system
-	GenerateWorld(1, _patches.map_x, _patches.map_y);
-
-	_local_player = OWNER_NONE;
-	MarkWholeScreenDirty();
-}
-
-void StartupPlayers(void);
-void StartupDisasters(void);
-
-/**
- * Start Scenario starts a new game based on a scenario.
- * Eg 'New Game' --> select a preset scenario
- * This starts a scenario based on your current difficulty settings
- */
-static void StartScenario(void)
-{
-	_game_mode = GM_NORMAL;
-
-	// invalid type
-	if (_file_to_saveload.mode == SL_INVALID) {
-		printf("Savegame is obsolete or invalid format: %s\n", _file_to_saveload.name);
-		ShowErrorMessage(_error_message, STR_4009_GAME_LOAD_FAILED, 0, 0);
-		_game_mode = GM_MENU;
-		return;
-	}
-
-	GfxLoadSprites();
-
-	// Reinitialize windows
-	ResetWindowSystem();
-	LoadStringWidthTable();
-
-	SetupColorsAndInitialWindow();
-
-	// Load game
-	if (SaveOrLoad(_file_to_saveload.name, _file_to_saveload.mode) != SL_OK) {
-		LoadIntroGame();
-		ShowErrorMessage(_error_message, STR_4009_GAME_LOAD_FAILED, 0, 0);
-	}
-
-	_opt_ptr = &_opt;
-	memcpy(&_opt_ptr->diff, &_opt_newgame.diff, sizeof(GameDifficulty));
-	_opt.diff_level = _opt_newgame.diff_level;
-
-	// Inititalize data
-	StartupPlayers();
-	StartupEngines();
-	StartupDisasters();
-
-	_local_player = 0;
-
-	MarkWholeScreenDirty();
-}
-
-bool SafeSaveOrLoad(const char *filename, int mode, int newgm)
-{
-	byte ogm = _game_mode;
-	int r;
-
-	_game_mode = newgm;
-	r = SaveOrLoad(filename, mode);
-	if (r == SL_REINIT) {
-		if (ogm == GM_MENU)
-			LoadIntroGame();
-		else if (ogm == GM_EDITOR)
-			MakeNewEditorWorld();
-		else
-			MakeNewGame();
-		return false;
-	} else if (r != SL_OK) {
-		_game_mode = ogm;
-		return false;
-	} else
-		return true;
-}
-
-void SwitchMode(int new_mode)
-{
-	_in_state_game_loop = true;
-
-#ifdef ENABLE_NETWORK
-	// If we are saving something, the network stays in his current state
-	if (new_mode != SM_SAVE) {
-		// If the network is active, make it not-active
-		if (_networking) {
-			if (_network_server && (new_mode == SM_LOAD || new_mode == SM_NEWGAME)) {
-				NetworkReboot();
-				NetworkUDPClose();
-			} else {
-				NetworkDisconnect();
-				NetworkUDPClose();
-			}
-		}
-
-		// If we are a server, we restart the server
-		if (_is_network_server) {
-			// But not if we are going to the menu
-			if (new_mode != SM_MENU) {
-				NetworkServerStart();
-			} else {
-				// This client no longer wants to be a network-server
-				_is_network_server = false;
-			}
-		}
-	}
-#endif /* ENABLE_NETWORK */
-
-	switch (new_mode) {
-	case SM_EDITOR: /* Switch to scenario editor */
-		MakeNewEditorWorld();
-		break;
-
-	case SM_NEWGAME: /* New Game --> 'Random game' */
-#ifdef ENABLE_NETWORK
-		if (_network_server)
-			snprintf(_network_game_info.map_name, 40, "Random");
-#endif /* ENABLE_NETWORK */
-		MakeNewGame();
-		break;
-
-	case SM_START_SCENARIO: /* New Game --> Choose one of the preset scenarios */
-		StartScenario();
-		break;
-
-	case SM_LOAD: { /* Load game, Play Scenario */
-		_opt_ptr = &_opt;
-
-		_error_message = INVALID_STRING_ID;
-		if (!SafeSaveOrLoad(_file_to_saveload.name, _file_to_saveload.mode, GM_NORMAL)) {
-			LoadIntroGame();
-			ShowErrorMessage(_error_message, STR_4009_GAME_LOAD_FAILED, 0, 0);
-		} else {
-			_local_player = 0;
-			DoCommandP(0, 0, 0, NULL, CMD_PAUSE); // decrease pause counter (was increased from opening load dialog)
-#ifdef ENABLE_NETWORK
-			if (_network_server)
-				snprintf(_network_game_info.map_name, 40, "Loaded game");
-#endif /* ENABLE_NETWORK */
-		}
-		break;
-	}
-
-	case SM_LOAD_SCENARIO: { /* Load scenario from scenario editor */
-		int i;
-
-		if (SafeSaveOrLoad(_file_to_saveload.name, _file_to_saveload.mode, GM_EDITOR)) {
-			_opt_ptr = &_opt;
-
-			_local_player = OWNER_NONE;
-			_generating_world = true;
-			// delete all players.
-			for (i = 0; i != MAX_PLAYERS; i++) {
-				ChangeOwnershipOfPlayerItems(i, 0xff);
-				_players[i].is_active = false;
-			}
-			_generating_world = false;
-			// delete all stations owned by a player
-			DeleteAllPlayerStations();
-
-#ifdef ENABLE_NETWORK
-			if (_network_server)
-				snprintf(_network_game_info.map_name, 40, "Loaded scenario");
-#endif /* ENABLE_NETWORK */
-		} else
-			ShowErrorMessage(INVALID_STRING_ID, STR_4009_GAME_LOAD_FAILED, 0, 0);
-
-		break;
-	}
-
-
-	case SM_MENU: /* Switch to game intro menu */
-		LoadIntroGame();
-		break;
-
-	case SM_SAVE: /* Save game */
-		if (SaveOrLoad(_file_to_saveload.name, SL_SAVE) != SL_OK)
-			ShowErrorMessage(INVALID_STRING_ID, STR_4007_GAME_SAVE_FAILED, 0, 0);
-		else
-			DeleteWindowById(WC_SAVELOAD, 0);
-		break;
-
-	case SM_GENRANDLAND: /* Generate random land within scenario editor */
-		GenerateWorld(2, _patches.map_x, _patches.map_y);
-		// XXX: set date
-		_local_player = OWNER_NONE;
-		MarkWholeScreenDirty();
-		break;
-	}
-
-	if (_switch_mode_errorstr != INVALID_STRING_ID)
-		ShowErrorMessage(INVALID_STRING_ID,_switch_mode_errorstr,0,0);
-
-	_in_state_game_loop = false;
-}
-
-
-// State controlling game loop.
-// The state must not be changed from anywhere
-// but here.
-// That check is enforced in DoCommand.
-void StateGameLoop(void)
-{
-	// dont execute the state loop during pause
-	if (_pause) return;
-
-	_in_state_game_loop = true;
-	// _frame_counter is increased somewhere else when in network-mode
-	//  Sidenote: _frame_counter is ONLY used for _savedump in non-MP-games
-	//    Should that not be deleted? If so, the next 2 lines can also be deleted
-	if (!_networking)
-		_frame_counter++;
-
-	if (_savedump_path[0] && (uint)_frame_counter >= _savedump_first && (uint)(_frame_counter -_savedump_first) % _savedump_freq == 0 ) {
-		char buf[100];
-		sprintf(buf, "%s%.5d.sav", _savedump_path, _frame_counter);
-		SaveOrLoad(buf, SL_SAVE);
-		if ((uint)_frame_counter >= _savedump_last) exit(1);
-	}
-
-	if (_game_mode == GM_EDITOR) {
-		RunTileLoop();
-		CallVehicleTicks();
-		CallLandscapeTick();
-		CallWindowTickEvent();
-		NewsLoop();
-	} else {
-		// All these actions has to be done from OWNER_NONE
-		//  for multiplayer compatibility
-		uint p = _current_player;
-		_current_player = OWNER_NONE;
-
-		AnimateAnimatedTiles();
-		IncreaseDate();
-		RunTileLoop();
-		CallVehicleTicks();
-		CallLandscapeTick();
-
-		// To bad the AI does not work in multiplayer, because states are not saved
-		//  perfectly
-		if (!disable_computer && !_networking)
-			RunOtherPlayersLoop();
-
-		CallWindowTickEvent();
-		NewsLoop();
-		_current_player = p;
-	}
-
-	_in_state_game_loop = false;
-}
-
-static void DoAutosave(void)
-{
-	char buf[200];
-
-	if (_patches.keep_all_autosave && _local_player != OWNER_SPECTATOR) {
-		const Player *p = DEREF_PLAYER(_local_player);
-		char *s;
-		sprintf(buf, "%s%s", _path.autosave_dir, PATHSEP);
-
-		SetDParam(0, p->name_1);
-		SetDParam(1, p->name_2);
-		SetDParam(2, _date);
-		s = (char*)GetString(buf + strlen(_path.autosave_dir) + strlen(PATHSEP), STR_4004);
-		strcpy(s, ".sav");
-	} else { /* Save a maximum of 15 autosaves */
-		int n = _autosave_ctr;
-		_autosave_ctr = (_autosave_ctr + 1) & 15;
-		sprintf(buf, "%s%sautosave%d.sav", _path.autosave_dir, PATHSEP, n);
-	}
-
-	DEBUG(misc, 2) ("Autosaving to %s", buf);
-	if (SaveOrLoad(buf, SL_SAVE) != SL_OK)
-		ShowErrorMessage(INVALID_STRING_ID, STR_AUTOSAVE_FAILED, 0, 0);
-}
-
-static void ScrollMainViewport(int x, int y)
-{
-	if (_game_mode != GM_MENU) {
-		Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
-		assert(w);
-
-		WP(w,vp_d).scrollpos_x += x << w->viewport->zoom;
-		WP(w,vp_d).scrollpos_y += y << w->viewport->zoom;
-	}
-}
-
-static const int8 scrollamt[16][2] = {
-	{ 0, 0},
-	{-2, 0}, // 1:left
-	{ 0,-2}, // 2:up
-	{-2,-1}, // 3:left + up
-	{ 2, 0}, // 4:right
-	{ 0, 0}, // 5:left + right
-	{ 2,-1}, // 6:right + up
-	{ 0,-2}, // 7:left + right + up = up
-	{ 0 ,2}, // 8:down
-	{-2 ,1}, // 9:down+left
-	{ 0, 0}, // 10:impossible
-	{-2, 0}, // 11:left + up + down = left
-	{ 2, 1}, // 12:down+right
-	{ 0, 2}, // 13:left + right + down = down
-	{ 0,-2}, // 14:left + right + up = up
-	{ 0, 0}, // 15:impossible
-};
-
-static void HandleKeyScrolling(void)
-{
-	if (_dirkeys && !_no_scroll) {
-		int factor = _shift_pressed ? 50 : 10;
-		ScrollMainViewport(scrollamt[_dirkeys][0] * factor, scrollamt[_dirkeys][1] * factor);
-	}
-}
-
-void GameLoop(void)
-{
-	int m;
-
-	// autosave game?
-	if (_do_autosave) {
-		_do_autosave = false;
-		DoAutosave();
-		RedrawAutosave();
-	}
-
-	// handle scrolling of the main window
-	if (_dirkeys) HandleKeyScrolling();
-
-	// make a screenshot?
-	if ((m=_make_screenshot) != 0) {
-		_make_screenshot = 0;
-		switch(m) {
-		case 1: // make small screenshot
-			UndrawMouseCursor();
-			ShowScreenshotResult(MakeScreenshot());
-			break;
-		case 2: // make large screenshot
-			ShowScreenshotResult(MakeWorldScreenshot(-(int)MapMaxX() * 32, 0, MapMaxX() * 64, MapSizeY() * 32, 0));
-			break;
-		}
-	}
-
-	// switch game mode?
-	if ((m=_switch_mode) != SM_NONE) {
-		_switch_mode = SM_NONE;
-		SwitchMode(m);
-	}
-
-	IncreaseSpriteLRU();
-	InteractiveRandom();
-
-	if (_scroller_click_timeout > 3)
-		_scroller_click_timeout -= 3;
-	else
-		_scroller_click_timeout = 0;
-
-	_caret_timer += 3;
-	_timer_counter+=8;
-	CursorTick();
-
-#ifdef ENABLE_NETWORK
-	// Check for UDP stuff
-	NetworkUDPGameLoop();
-
-	if (_networking) {
-		// Multiplayer
-		NetworkGameLoop();
-	} else {
-		if (_network_reconnect > 0 && --_network_reconnect == 0) {
-			// This means that we want to reconnect to the last host
-			// We do this here, because it means that the network is really closed
-			NetworkClientConnectGame(_network_last_host, _network_last_port);
-		}
-		// Singleplayer
-		StateGameLoop();
-	}
-#else
-	StateGameLoop();
-#endif /* ENABLE_NETWORK */
-
-	if (!_pause && _display_opt&DO_FULL_ANIMATION)
-		DoPaletteAnimations();
-
-	if (!_pause || _cheats.build_in_pause.value)
-		MoveAllTextEffects();
-
-	InputLoop();
-
-	MusicLoop();
-}
-
-void BeforeSaveGame(void)
-{
-	Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
-
-	if (w != NULL) {
-		_saved_scrollpos_x = WP(w,vp_d).scrollpos_x;
-		_saved_scrollpos_y = WP(w,vp_d).scrollpos_y;
-		_saved_scrollpos_zoom = w->viewport->zoom;
-	}
-}
-
-static void ConvertTownOwner(void)
-{
-	uint tile;
-
-	for (tile = 0; tile != MapSize(); tile++) {
-		if (IsTileType(tile, MP_STREET)) {
-			if ((_map5[tile] & 0xF0) == 0x10 && _map3_lo[tile] & 0x80)
-				_map3_lo[tile] = OWNER_TOWN;
-
-			if (_map_owner[tile] & 0x80)
-				_map_owner[tile] = OWNER_TOWN;
-		} else if (IsTileType(tile, MP_TUNNELBRIDGE)) {
-			if (_map_owner[tile] & 0x80)
-				_map_owner[tile] = OWNER_TOWN;
-		}
-	}
-}
-
-// before savegame version 4, the name of the company determined if it existed
-static void CheckIsPlayerActive(void)
-{
-	Player *p;
-	FOR_ALL_PLAYERS(p) {
-		if (p->name_1 != 0) {
-			p->is_active = true;
-		}
-	}
-}
-
-// since savegame version 4.1, exclusive transport rights are stored at towns
-static void UpdateExclusiveRights(void)
-{
-	Town *t;
-	FOR_ALL_TOWNS(t) if (t->xy != 0) {
-		t->exclusivity=(byte)-1;
-	}
-
-	/* FIXME old exclusive rights status is not being imported (stored in s->blocked_months_obsolete)
-			could be implemented this way:
-			1.) Go through all stations
-					Build an array town_blocked[ town_id ][ player_id ]
-				 that stores if at least one station in that town is blocked for a player
-			2.) Go through that array, if you find a town that is not blocked for
-				 	one player, but for all others, then give him exclusivity.
-	*/
-}
-
-const byte convert_currency[] = {
-	 0,  1, 12,  8,  3,
-	10, 14, 19,  4,  5,
-	 9, 11, 13,  6, 17,
-	16, 22, 21,  7, 15,
-	18,  2, 20, };
-
-// since savegame version 4.2 the currencies are arranged differently
-static void UpdateCurrencies(void)
-{
-	_opt.currency = convert_currency[_opt.currency];
-}
-
-/* Up to revision 1413 the invisible tiles at the southern border have not been
- * MP_VOID, even though they should have. This is fixed by this function
- */
-static void UpdateVoidTiles(void)
-{
-	uint i;
-
-	for (i = 0; i < MapMaxY(); ++i)
-		SetTileType(i * MapSizeX() + MapMaxX(), MP_VOID);
-	for (i = 0; i < MapSizeX(); ++i)
-		SetTileType(MapSizeX() * MapMaxY() + i, MP_VOID);
-}
-
-// since savegame version 6.0 each sign has an "owner", signs without owner (from old games are set to 255)
-static void UpdateSignOwner(void)
-{
-	SignStruct *ss;
-	FOR_ALL_SIGNS(ss) {
-		ss->owner = OWNER_NONE; // no owner
-	}
-}
-
-extern void UpdateOldAircraft( void );
-extern void UpdateOilRig( void );
-
-bool AfterLoadGame(uint version)
-{
-	Window *w;
-	ViewPort *vp;
-
-	// in version 2.1 of the savegame, town owner was unified.
-	if (version <= 0x200) {
-		ConvertTownOwner();
-	}
-
-	// from version 4.1 of the savegame, exclusive rights are stored at towns
-	if (version <= 0x400) {
-		UpdateExclusiveRights();
-	}
-
-	// from version 4.2 of the savegame, currencies are in a different order
-	if (version <= 0x401) {
-		UpdateCurrencies();
-	}
-
-	// from version 6.0 of the savegame, signs have an "owner"
-	if (version <= 0x600) {
-		UpdateSignOwner();
-	}
-
-	/* In old version there seems to be a problem that water is owned by
-	    OWNER_NONE, not OWNER_WATER.. I can't replicate it for the current
-	    (0x402) version, so I just check when versions are older, and then
-	    walk through the whole map.. */
-	if (version <= 0x402) {
-		TileIndex tile = TILE_XY(0,0);
-		uint w = MapSizeX();
-		uint h = MapSizeY();
-
-		BEGIN_TILE_LOOP(tile_cur, w, h, tile)
-			if (IsTileType(tile_cur, MP_WATER) && _map_owner[tile_cur] >= MAX_PLAYERS)
-				_map_owner[tile_cur] = OWNER_WATER;
-		END_TILE_LOOP(tile_cur, w, h, tile)
-	}
-
-	// convert road side to my format.
-	if (_opt.road_side) _opt.road_side = 1;
-
-	// Load the sprites
-	GfxLoadSprites();
-
-	// Update current year
-	SetDate(_date);
-
-	// reinit the landscape variables (landscape might have changed)
-	InitializeLandscapeVariables(true);
-
-	// Update all vehicles
-	AfterLoadVehicles();
-
-	// Update all waypoints
-	if (version < 0x0C00)
-		FixOldWaypoints();
-
-	UpdateAllWaypointSigns();
-
-	// in version 2.2 of the savegame, we have new airports
-	if (version <= 0x201) {
-		UpdateOldAircraft();
-	}
-
-	UpdateAllStationVirtCoord();
-
-	// Setup town coords
-	AfterLoadTown();
-	UpdateAllSignVirtCoords();
-
-	// make sure there is a town in the game
-	if (_game_mode == GM_NORMAL && !ClosestTownFromTile(0, (uint)-1))
-	{
-		_error_message = STR_NO_TOWN_IN_SCENARIO;
-		return false;
-	}
-
-	// Initialize windows
-	ResetWindowSystem();
-	SetupColorsAndInitialWindow();
-
-	w = FindWindowById(WC_MAIN_WINDOW, 0);
-
-	WP(w,vp_d).scrollpos_x = _saved_scrollpos_x;
-	WP(w,vp_d).scrollpos_y = _saved_scrollpos_y;
-
-	vp = w->viewport;
-	vp->zoom = _saved_scrollpos_zoom;
-	vp->virtual_width = vp->width << vp->zoom;
-	vp->virtual_height = vp->height << vp->zoom;
-
-
-	// in version 4.0 of the savegame, is_active was introduced to determine
-	// if a player does exist, rather then checking name_1
-	if (version <= 0x400) {
-		CheckIsPlayerActive();
-	}
-
-	// the void tiles on the southern border used to belong to a wrong class.
-	if (version <= 0x402)
-		UpdateVoidTiles();
-
-	// If Load Scenario / New (Scenario) Game is used,
-	//  a player does not exist yet. So create one here.
-	// 1 exeption: network-games. Those can have 0 players
-	//   But this exeption is not true for network_servers!
-	if (!_players[0].is_active && (!_networking || (_networking && _network_server)))
-		DoStartupNewPlayer(false);
-
-	DoZoomInOutWindow(ZOOM_NONE, w); // update button status
-	MarkWholeScreenDirty();
-
-	//In 5.1, Oilrigs have been moved (again)
-	if (version <= 0x500) {
-		UpdateOilRig();
-	}
-
-	if (version <= 0x600) {
-		BEGIN_TILE_LOOP(tile, MapSizeX(), MapSizeY(), 0) {
-			if (IsTileType(tile, MP_HOUSE)) {
-				_map3_hi[tile] = _map2[tile];
-				//XXX magic
-				SetTileType(tile, MP_VOID);
-				_map2[tile] = ClosestTownFromTile(tile,(uint)-1)->index;
-				SetTileType(tile, MP_HOUSE);
-			} else if (IsTileType(tile, MP_STREET)) {
-				//XXX magic
-				SetTileType(tile, MP_VOID);
-				_map3_hi[tile] |= (_map2[tile] << 4);
-				if ( _map_owner[tile] == OWNER_TOWN)
-					_map2[tile] = ClosestTownFromTile(tile,(uint)-1)->index;
-				else
-					_map2[tile] = 0;
-				SetTileType(tile, MP_STREET);
-			}
-		} END_TILE_LOOP(tile, MapSizeX(), MapSizeY(), 0);
-	}
-
-	if (version < 0x900) {
-		Town *t;
-		FOR_ALL_TOWNS(t) {
-			UpdateTownMaxPass(t);
-		}
-	}
-
-	return true;
-}