shithub: hexen

ref: 21f6a1501d32f541673f8226d4b2292aef920c2b
dir: /h2_main.c/

//**************************************************************************
//**
//** h2_main.c : Heretic 2 : Raven Software, Corp.
//**
//** $Revision: 586 $
//** $Date: 2012-08-31 21:51:13 +0300 (Fri, 31 Aug 2012) $
//**
//**************************************************************************

// HEADER FILES ------------------------------------------------------------

#include "h2stdinc.h"
#include <ctype.h>
#include "h2def.h"
#include "p_local.h"
#include "soundst.h"
#include "v_compat.h"
#include "i_system.h"

// MACROS ------------------------------------------------------------------

#define MAXWADFILES		20

#ifdef RENDER3D
#define V_DrawPatch(x,y,p)		OGL_DrawPatch((x),(y),(p))
#define V_DrawRawScreen(a)		OGL_DrawRawScreen((a))
#endif

// TYPES -------------------------------------------------------------------

typedef struct
{
	const char *name;
	void (*func)(const char **args, int tag);
	int	requiredArgs;
	int		tag;
} execOpt_t;

// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------

void R_ExecuteSetViewSize(void);
void D_CheckNetGame(void);
void G_BuildTiccmd(ticcmd_t *cmd);
void F_Drawer(void);
boolean F_Responder(event_t *ev);
void I_StartupKeyboard(void);
void I_StartupJoystick(void);
void I_ShutdownKeyboard(void);
void S_InitScript(void);

// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------

void H2_ProcessEvents(void);
void H2_DoAdvanceDemo(void);
void H2_AdvanceDemo(void);
void H2_StartTitle(void);
void H2_PageTicker(void);

// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------

static void DrawMessage(void);
static void PageDrawer(void);
static void HandleArgs(void);
static void CheckRecordFrom(void);
static void AddWADFile(const char *file);
static void DrawAndBlit(void);
static void ExecOptionFILE(const char **args, int tag);
static void ExecOptionSCRIPTS(const char **args, int tag);
static void ExecOptionDEVMAPS(const char **args, int tag);
static void ExecOptionSKILL(const char **args, int tag);
static void ExecOptionPLAYDEMO(const char **args, int tag);
static void ExecOptionMAXZONE(const char **args, int tag);
static void WarpCheck(void);


// EXTERNAL DATA DECLARATIONS ----------------------------------------------

extern boolean MenuActive;
extern boolean askforquit;

// PUBLIC DATA DEFINITIONS -------------------------------------------------

const char *basePath = DUMMY_BASEPATH;
boolean DevMaps;			// true = Map development mode
const char *DevMapsDir = "";		// development maps directory
boolean shareware;			// true if only episode 1 present
boolean oldwad_10;			// true if version 1.0 wad files
boolean mac_hexen;			// true if Macintosh version wad
boolean nomonsters;			// checkparm of -nomonsters
boolean respawnparm;		// checkparm of -respawn
boolean randomclass;		// checkparm of -randclass
boolean debugmode;			// checkparm of -debug
boolean ravpic;				// checkparm of -ravpic
boolean cmdfrag;			// true if a CMD_FRAG packet should be sent out
boolean singletics;			// debug flag to cancel adaptiveness
boolean artiskip;			// whether shift-enter skips an artifact
int maxzone = 0x800000;		// Maximum allocated for zone heap (8meg default)
skill_t startskill;
int startepisode;
int startmap;
boolean autostart;
boolean advancedemo;
FILE *debugfile;
event_t events[MAXEVENTS];
int eventhead;
int eventtail;

// PRIVATE DATA DEFINITIONS ------------------------------------------------

static int WarpMap;
static int demosequence;
static int pagetic;
static const char *pagename;

static char basedefault[1024];

static const char *wadfiles[MAXWADFILES + 1] =
{
	"hexen.wad",
#ifdef ASSASSIN
	"assassin.wad",
#endif
	NULL	/* the last entry MUST be NULL */
};
static execOpt_t ExecOptions[] =
{
	{ "-file", ExecOptionFILE, 1, 0 },
	{ "-scripts", ExecOptionSCRIPTS, 1, 0 },
	{ "-devmaps", ExecOptionDEVMAPS, 1, 0 },
	{ "-skill", ExecOptionSKILL, 1, 0 },
	{ "-playdemo", ExecOptionPLAYDEMO, 1, 0 },
	{ "-timedemo", ExecOptionPLAYDEMO, 1, 0 },
	{ "-maxzone", ExecOptionMAXZONE, 1, 0 },
	{ NULL, NULL, 0, 0 } // Terminator
};

// CODE --------------------------------------------------------------------

#if !(defined(__DOS__) || defined(__WATCOMC__) || defined(__DJGPP__) || defined(_WIN32) || defined(_WIN64))
char *strlwr (char *str)
{
	char	*c;
	c = str;
	while (*c)
	{
		*c = tolower(*c);
		c++;
	}
	return str;
}

char *strupr (char *str)
{
	char	*c;
	c = str;
	while (*c)
	{
		*c = toupper(*c);
		c++;
	}
	return str;
}

int filelength(int handle)
{
	Dir *d;
	int length;

	d = dirfstat(handle);
	if (d == nil)
	{
		I_Error("Error fstating");
	}
	length = d->length;
	free(d);
	return length;
}
#endif

//==========================================================================
//
// H2_Main
//
//==========================================================================
void InitMapMusicInfo(void);

void H2_Main(void)
{
	int p, i;
	char *slash;
	char *wadloc[nelem(wadfiles)];

	M_FindResponseFile();
	setbuf(stdout, NULL);
	startepisode = 1;
	autostart = false;
	startskill = sk_medium;
	startmap = 1;

	HandleArgs();

	// Initialize subsystems

	ST_Message("V_Init: allocate screens.\n");
	V_Init();

	// HEXEN MODIFICATION:
	// There is a realloc() in W_AddFile() that might fail if the zone
	// heap has been previously allocated, so we need to initialize the
	// WAD files BEFORE the zone memory initialization.
	ST_Message("W_Init: Init WADfiles.\n");
	for(i = 0; i < nelem(wadfiles); i++){
		if(wadfiles[i] == nil){
			wadloc[i] = nil;
			break;
		} else
			wadloc[i] = I_IdentifyWAD(wadfiles[i]);
	}
	W_InitMultipleFiles(wadloc);
	W_CheckWADFiles();

	strncpy(basedefault, wadloc[0], sizeof(basedefault)-5);
	basedefault[sizeof(basedefault)-5] = '\0';
	slash = strrchr(basedefault, '/');
	if (slash++ == 0)
		slash = basedefault;
	strcpy(slash, "cfg");

	// Load defaults before initing other systems
	ST_Message("M_LoadDefaults: Load system defaults.\n");
	M_LoadDefaults(basedefault);

	ST_Message("Z_Init: Init zone memory allocation daemon.\n");
	Z_Init();

	ST_Message("MN_Init: Init menu system.\n");
	MN_Init();

	ST_Message("CT_Init: Init chat mode data.\n");
	CT_Init();

	InitMapMusicInfo();		// Init music fields in mapinfo

	ST_Message("S_InitScript\n");
	S_InitScript();

	ST_Message("SN_InitSequenceScript: Registering sound sequences.\n");
	SN_InitSequenceScript();
	ST_Message("I_Init: Setting up machine state.\n");
	I_Init();

	ST_Message("ST_Init: Init startup screen.\n");
	ST_Init();

	S_StartSongName("orb", true);

	// Show version message now, so it's visible during R_Init()
	ST_Message("Executable: "VERSIONTEXT".\n");

	ST_Message("R_Init: Init Hexen refresh daemon");
	R_Init();
	ST_Message("\n");

	if (M_CheckParm("-net"))
		ST_NetProgress();	// Console player found

	ST_Message("P_Init: Init Playloop state.\n");
	P_Init();

	// Check for command line warping. Follows P_Init() because the
	// MAPINFO.TXT script must be already processed.
	WarpCheck();

	if (autostart)
	{
		ST_Message("Warp to Map %d (\"%s\":%d), Skill %d\n",
			WarpMap, P_GetMapName(startmap), startmap, startskill + 1);
	}

	ST_Message("D_CheckNetGame: Checking network game status.\n");
	D_CheckNetGame();

	ST_Message("SB_Init: Loading patches.\n");
	SB_Init();

	CheckRecordFrom();

	p = M_CheckParm("-record");
	if (p && p < myargc - 1)
	{
		G_RecordDemo(startskill, 1, startepisode, startmap, myargv[p + 1]);
		H2_GameLoop(); // Never returns
	}

	p = M_CheckParm("-playdemo");
	if (p && p < myargc - 1)
	{
		singledemo = true; // Quit after one demo
		G_DeferedPlayDemo(myargv[p + 1]);
		H2_GameLoop(); // Never returns
	}

	p = M_CheckParm("-timedemo");
	if (p && p < myargc - 1)
	{
		G_TimeDemo(myargv[p + 1]);
		H2_GameLoop(); // Never returns
	}

	p = M_CheckParm("-loadgame");
	if (p && p < myargc - 1)
	{
		G_LoadGame(atoi(myargv[p + 1]));
	}

	if (gameaction != ga_loadgame)
	{
		UpdateState |= I_FULLSCRN;
		BorderNeedRefresh = true;
		if (autostart || netgame)
		{
			G_StartNewInit();
			G_InitNew(startskill, startepisode, startmap);
		}
		else
		{
			H2_StartTitle();
		}
	}
	H2_GameLoop(); // Never returns
}

//==========================================================================
//
// HandleArgs
//
//==========================================================================

static void HandleArgs(void)
{
	int p;
	execOpt_t *opt;

	nomonsters = M_ParmExists("-nomonsters");
	respawnparm = M_ParmExists("-respawn");
	randomclass = M_ParmExists("-randclass");
	ravpic = M_ParmExists("-ravpic");
	artiskip = M_ParmExists("-artiskip");
	debugmode = M_ParmExists("-debug");
	deathmatch = M_ParmExists("-deathmatch");
	cmdfrag = M_ParmExists("-cmdfrag");

	// Process command line options
	for (opt = ExecOptions; opt->name != NULL; opt++)
	{
		p = M_CheckParm(opt->name);
		if (p && p < myargc-opt->requiredArgs)
		{
			opt->func(&myargv[p], opt->tag);
		}
	}

	// Look for an external device driver
	I_CheckExternDriver();
}

//==========================================================================
//
// WarpCheck
//
//==========================================================================

static void WarpCheck(void)
{
	int p;
	int map;

	p = M_CheckParm("-warp");
	if (p && p < myargc - 1)
	{
		WarpMap = atoi(myargv[p + 1]);
		map = P_TranslateMap(WarpMap);
		if (map == -1)
		{ // Couldn't find real map number
			startmap = 1;
			ST_Message("-WARP: Invalid map number.\n");
		}
		else
		{ // Found a valid startmap
			startmap = map;
			autostart = true;
		}
	}
	else
	{
		WarpMap = 1;
		startmap = P_TranslateMap(1);
		if (startmap == -1)
		{
			startmap = 1;
		}
	}
}

//==========================================================================
//
// ExecOptionSKILL
//
//==========================================================================

static void ExecOptionSKILL(const char **args, int tag)
{
	USED(tag);
	startskill = args[1][0] - '1';
	autostart = true;
}

//==========================================================================
//
// ExecOptionFILE
//
//==========================================================================

static void ExecOptionFILE(const char **args, int tag)
{
	int p;

	USED(tag); USED(args);
	p = M_CheckParm("-file");
	while (++p != myargc && myargv[p][0] != '-')
	{
		AddWADFile(myargv[p]);
	}
}


//==========================================================================
//
// ExecOptionPLAYDEMO
//
//==========================================================================

static void ExecOptionPLAYDEMO(const char **args, int tag)
{
	char file[256];

	USED(tag);
	snprintf(file, sizeof(file), "%s.lmp", args[1]);
	AddWADFile(file);
	ST_Message("Playing demo %s.lmp.\n", args[1]);
}

//==========================================================================
//
// ExecOptionSCRIPTS
//
//==========================================================================

static void ExecOptionSCRIPTS(const char **args, int tag)
{
	USED(tag);
	sc_FileScripts = true;
	sc_ScriptsDir = args[1];
}

//==========================================================================
//
// ExecOptionDEVMAPS
//
//==========================================================================

static void ExecOptionDEVMAPS(const char **args, int tag)
{
	char *ptr;

	USED(tag);
	DevMaps = true;
	ST_Message("Map development mode enabled:\n");
	ST_Message("[config    ] = %s\n", args[1]);
	SC_OpenFileCLib(args[1]);
	SC_MustGetStringName("mapsdir");
	SC_MustGetString();
	ST_Message("[mapsdir   ] = %s\n", sc_String);
	ptr = (char *) malloc(strlen(sc_String) + 1);
	strcpy(ptr, sc_String);
	DevMapsDir = ptr;
	SC_MustGetStringName("scriptsdir");
	SC_MustGetString();
	ST_Message("[scriptsdir] = %s\n", sc_String);
	sc_FileScripts = true;
	ptr = (char *) malloc(strlen(sc_String) + 1);
	strcpy(ptr, sc_String);
	sc_ScriptsDir = ptr;
	while (SC_GetString())
	{
		if (SC_Compare("file"))
		{
			SC_MustGetString();
			AddWADFile(sc_String);
		}
		else
		{
			SC_ScriptError(NULL);
		}
	}
	SC_Close();
}


static long superatol(const char *s)
{
	long int n = 0, r = 10, x, mul = 1;
	const char *c = s;

	for ( ; *c; c++)
	{
		x = (*c & 223) - 16;

		if (x == -3)
		{
			mul = -mul;
		}
		else if (x == 72 && r == 10)
		{
			n -= (r = n);
			if (!r)
				r = 16;
			if (r < 2 || r > 36)
				return -1;
		}
		else
		{
			if (x > 10)
				x -= 39;
			if (x >= r)
				return -1;
			n = (n*r) + x;
		}
	}
	return (mul*n);
}

static void ExecOptionMAXZONE(const char **args, int tag)
{
	int size;

	USED(tag);
	size = (int) superatol(args[1]);
	if (size < MINIMUM_HEAP_SIZE)
		size = MINIMUM_HEAP_SIZE;
	if (size > MAXIMUM_HEAP_SIZE)
		size = MAXIMUM_HEAP_SIZE;
	maxzone = size;
}

//==========================================================================
//
// H2_GameLoop
//
//==========================================================================

void H2_GameLoop(void)
{
	if (M_CheckParm("-debugfile"))
	{
		char filename[20];
		snprintf(filename, sizeof(filename), "debug%i.txt", consoleplayer);
		debugfile = fopen(filename,"w");
	}
	I_InitGraphics();
	while (1)
	{
		// Frame syncronous IO operations
		I_StartFrame();

		// Process one or more tics
		if (singletics)
		{
			I_StartTic();
			H2_ProcessEvents();
			G_BuildTiccmd(&netcmds[consoleplayer][maketic % BACKUPTICS]);
			if (advancedemo)
			{
				H2_DoAdvanceDemo();
			}
			G_Ticker();
			gametic++;
			maketic++;
		}
		else
		{
			// Will run at least one tic
			TryRunTics();
		}

		// Move positional sounds
		S_UpdateSounds(players[displayplayer].mo);

		DrawAndBlit();
	}
}

//==========================================================================
//
// H2_ProcessEvents
//
// Send all the events of the given timestamp down the responder chain.
//
//==========================================================================

void H2_ProcessEvents(void)
{
	event_t *ev;

	while (eventtail != eventhead)
	{
		ev = &events[eventtail];
		if (F_Responder(ev))
		{
			goto _next_ev;
		}
		if (MN_Responder(ev))
		{
			goto _next_ev;
		}
		G_Responder(ev);
	_next_ev:
		eventtail = (eventtail + 1) & (MAXEVENTS - 1);
	}
}

//==========================================================================
//
// H2_PostEvent
//
// Called by the I/O functions when input is detected.
//
//==========================================================================

void H2_PostEvent(event_t *ev)
{
	events[eventhead] = *ev;
	eventhead++;
	eventhead &= (MAXEVENTS - 1);
}

//==========================================================================
//
// DrawAndBlit
//
//==========================================================================

static void DrawAndBlit(void)
{
	// Change the view size if needed
	if (setsizeneeded)
	{
		R_ExecuteSetViewSize();
	}

	// Do buffered drawing
	switch (gamestate)
	{
	case GS_LEVEL:
		if (!gametic)
			break;
#if  AM_TRANSPARENT
		R_RenderPlayerView(&players[displayplayer]);
#endif
		if (automapactive)
			AM_Drawer();
#if !AM_TRANSPARENT
		else
		{
			R_RenderPlayerView(&players[displayplayer]);
		}
#endif
		CT_Drawer();
		UpdateState |= I_FULLVIEW;
		SB_Drawer();
		break;
	case GS_INTERMISSION:
		IN_Drawer();
		break;
	case GS_FINALE:
		F_Drawer();
		break;
	case GS_DEMOSCREEN:
		PageDrawer();
		break;
	}

	if (paused && !MenuActive && !askforquit)
	{
		if (!netgame)
		{
			V_DrawPatch(160, viewwindowy + 5, (PATCH_REF)WR_CacheLumpName("PAUSED", PU_CACHE));
		}
		else
		{
			V_DrawPatch(160, 70, (PATCH_REF)WR_CacheLumpName("PAUSED", PU_CACHE));
		}
	}

#ifdef RENDER3D
	if (OGL_DrawFilter())
		BorderNeedRefresh = true;
#endif

	// Draw current message
	DrawMessage();

	// Draw Menu
	MN_Drawer();

	// Send out any new accumulation
	NetUpdate();

	// Flush buffered stuff to screen
	I_Update();
}

//==========================================================================
//
// DrawMessage
//
//==========================================================================

static void DrawMessage(void)
{
	player_t *player;

	player = &players[consoleplayer];
	if (player->messageTics <= 0 || !player->message)
	{ // No message
		return;
	}
	if (player->yellowMessage)
	{
		MN_DrTextAYellow(player->message, 160 - MN_TextAWidth(player->message)/2, 1);
	}
	else
	{
		MN_DrTextA(player->message, 160 - MN_TextAWidth(player->message)/2, 1);
	}
}

//==========================================================================
//
// H2_PageTicker
//
//==========================================================================

void H2_PageTicker(void)
{
	if (--pagetic < 0)
	{
		H2_AdvanceDemo();
	}
}

//==========================================================================
//
// PageDrawer
//
//==========================================================================

static void PageDrawer(void)
{
	V_DrawRawScreen((BYTE_REF)WR_CacheLumpName(pagename, PU_CACHE));
	if (demosequence == 1)
	{
		V_DrawPatch(4, 160, (PATCH_REF)WR_CacheLumpName("ADVISOR", PU_CACHE));
	}
	UpdateState |= I_FULLSCRN;
}

//==========================================================================
//
// H2_AdvanceDemo
//
// Called after each demo or intro demosequence finishes.
//
//==========================================================================

void H2_AdvanceDemo(void)
{
	advancedemo = true;
}

//==========================================================================
//
// H2_DoAdvanceDemo
//
//==========================================================================

void H2_DoAdvanceDemo(void)
{
	players[consoleplayer].playerstate = PST_LIVE; // don't reborn
	advancedemo = false;
	usergame = false; // can't save/end game here
	paused = false;
	gameaction = ga_nothing;
	demosequence = (demosequence + 1) % 7;
	switch (demosequence)
	{
	case 0:
		pagetic = 280;
		gamestate = GS_DEMOSCREEN;
		pagename = "TITLE";
		S_StartSongName("hexen", true);
		break;
	case 1:
		pagetic = 210;
		gamestate = GS_DEMOSCREEN;
		pagename = "TITLE";
		break;
	case 2:
		BorderNeedRefresh = true;
		UpdateState |= I_FULLSCRN;
		G_DeferedPlayDemo("demo1");
		break;
	case 3:
		pagetic = 200;
		gamestate = GS_DEMOSCREEN;
		pagename = "CREDIT";
		break;
	case 4:
		BorderNeedRefresh = true;
		UpdateState |= I_FULLSCRN;
		G_DeferedPlayDemo("demo2");
		break;
	case 5:
		pagetic = 200;
		gamestate = GS_DEMOSCREEN;
		pagename = (mac_hexen == true)	? "PRSGCRED"	/* credits for Mac port by Presage */
						: "CREDIT";	/* original Raven/iD credits page . */
		break;
	case 6:
		BorderNeedRefresh = true;
		UpdateState |= I_FULLSCRN;
		G_DeferedPlayDemo("demo3");
		break;
	}
}

//==========================================================================
//
// H2_StartTitle
//
//==========================================================================

void H2_StartTitle(void)
{
	gameaction = ga_nothing;
	demosequence = -1;
	H2_AdvanceDemo();
}

//==========================================================================
//
// CheckRecordFrom
//
// -recordfrom <savegame num> <demoname>
//
//==========================================================================

static void CheckRecordFrom(void)
{
	int p;

	p = M_CheckParm("-recordfrom");
	if (!p || p >= myargc - 2)
	{ // Bad args
		return;
	}
	G_LoadGame(atoi(myargv[p + 1]));
	G_DoLoadGame(); // Load the gameskill etc info from savegame
	G_RecordDemo(gameskill, 1, gameepisode, gamemap, myargv[p + 2]);
	H2_GameLoop(); // Never returns
}

//==========================================================================
//
// AddWADFile
//
//==========================================================================

static void AddWADFile(const char *file)
{
	int i = 0;
	char *newwad;

	ST_Message("Adding external file: %s\n", file);
	while (wadfiles[i])
	{
		if (++i == MAXWADFILES)
			I_Error ("MAXWADFILES reached for %s", file);
	}
	newwad = (char *) malloc(strlen(file) + 1);
	strcpy(newwad, file);
	wadfiles[i] = newwad;
	if (++i <= MAXWADFILES)
		wadfiles[i] = NULL;
}


//==========================================================================
//
// Fixed Point math
//
//==========================================================================

#if defined(_HAVE_FIXED_ASM)

#if defined(__i386__) || defined(__386__) || defined(_M_IX86)
#if defined(__GNUC__) && !defined(_INLINE_FIXED_ASM)
fixed_t	FixedMul (fixed_t a, fixed_t b)
{
	fixed_t retval;
	__asm__ __volatile__(
		"imull  %%edx			\n\t"
		"shrdl  $16, %%edx, %%eax	\n\t"
		: "=a" (retval)
		: "a" (a), "d" (b)
		: "cc"
	);
	return retval;
}

fixed_t	FixedDiv2 (fixed_t a, fixed_t b)
{
	fixed_t retval;
	__asm__ __volatile__(
		"cdq				\n\t"
		"shldl  $16, %%eax, %%edx	\n\t"
		"sall   $16, %%eax		\n\t"
		"idivl  %%ebx			\n\t"
		: "=a" (retval)
		: "a" (a), "b" (b)
		: "%edx", "cc"
	);
	return retval;
}
#endif	/* GCC and !_INLINE_FIXED_ASM */
#endif	/* x86 */

#else	/* C-only versions */

fixed_t FixedMul (fixed_t a, fixed_t b)
{
	return ((int64_t) a * (int64_t) b) >> 16;
}

fixed_t FixedDiv2 (fixed_t a, fixed_t b)
{
	if (!b)
		return 0;
	return (fixed_t) (((double) a / (double) b) * FRACUNIT);
}
#endif

fixed_t FixedDiv (fixed_t a, fixed_t b)
{
	if ((abs(a) >> 14) >= abs(b))
	{
		return ((a^b) < 0 ? H2MININT : H2MAXINT);
	}
	return (FixedDiv2(a, b));
}

//==========================================================================
//
// Byte swap functions
//
//==========================================================================

int16_t ShortSwap (int16_t x)
{
	return (int16_t) (((uint16_t)x << 8) | ((uint16_t)x >> 8));
}

int32_t LongSwap (int32_t x)
{
	return (int32_t) (((uint32_t)x << 24) | ((uint32_t)x >> 24) |
			  (((uint32_t)x & (uint32_t)0x0000ff00UL) << 8) |
			  (((uint32_t)x & (uint32_t)0x00ff0000UL) >> 8));
}