// P_MISC.C

#include <process.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>

#include "d_global.h"
#include "d_ints.h"
#include "d_video.h"
#include "d_misc.h"

int		my_argc;
char	** my_argv;

/*
=============================================================================

							ODD FUNCTIONS

=============================================================================
*/


/*
=================
=
= MS_CheckParm
=
= Checks for the given parameter in the program's command line arguments
=
= Returns the argument number (1 to argc-1) or 0 if not present
=
=================
*/

int MS_CheckParm (char *check)
{
	int		i;
	char	*parm;

	for (i = 1;i<my_argc;i++)
	{
		parm = my_argv[i];

		while ( !isalpha(*parm) )	// skip - / \ etc.. in front of parm
			if (!*parm++)
				break;   			// hit end of string without an alphanum

		if ( !stricmp(check,parm) )
			return i;
	}

	return 0;
}



/*
=================
=
= MS_Error
=
= Shuts down everything and possibly prints a
= printf formatted error message, then exits to dos
=
=================
*/

void MS_Error (char *error, ...)
{
	va_list	argptr;
	int		cnt;

	INT_Shutdown ();
	VI_SetTextMode ();

	va_start (argptr,error);
	vprintf (error,argptr);
	va_end (argptr);
// DEBUG   CU_End();
	while (kbhit()) getch();
	exit (1);
}


/*
=================
=
= MS_ExitClean
=
= Shuts down everything and exits
=
=================
*/

void MS_ExitClean (void)
{
	INT_Shutdown ();
	VI_SetTextMode ();
// DEBUG   CU_End();
	while (kbhit()) getch();
	exit (0);
}


/*
=================
=
= MS_RndT
=
= FIX: do this better
=
=================
*/

byte	rndofs;
byte	rndtable[256] =
{
			0,   8, 109, 220, 222, 241, 149, 107,  75, 248, 254, 140,  16,  66,
		 74,  21, 211,  47,  80, 242, 154,  27, 205, 128, 161,  89,  77,  36,
	   95, 110,  85,  48, 212, 140, 211, 249,  22,  79, 200,  50,  28, 188,
	   52, 140, 202, 120,  68, 145,  62,  70, 184, 190,  91, 197, 152, 224,
	  149, 104,  25, 178, 252, 182, 202, 182, 141, 197,   4,  81, 181, 242,
	  145,  42,  39, 227, 156, 198, 225, 193, 219,  93, 122, 175, 249,   0,
	  175, 143,  70, 239,  46, 246, 163,  53, 163, 109, 168, 135,   2, 235,
	   25,  92,  20, 145, 138,  77,  69, 166,  78, 176, 173, 212, 166, 113,
	   94, 161,  41,  50, 239,  49, 111, 164,  70,  60,   2,  37, 171,  75,
	  136, 156,  11,  56,  42, 146, 138, 229,  73, 146,  77,  61,  98, 196,
	  135, 106,  63, 197, 195,  86,  96, 203, 113, 101, 170, 247, 181, 113,
	   80, 250, 108,   7, 255, 237, 129, 226,  79, 107, 112, 166, 103, 241,
	   24, 223, 239, 120, 198,  58,  60,  82, 128,   3, 184,  66, 143, 224,
	  145, 224,  81, 206, 163,  45,  63,  90, 168, 114,  59,  33, 159,  95,
	   28, 139, 123,  98, 125, 196,  15,  70, 194, 253,  54,  14, 109, 226,
	   71,  17, 161,  93, 186,  87, 244, 138,  20,  52, 123, 251,  26,  36,
	   17,  46,  52, 231, 232,  76,  31, 221,  84,  37, 216, 165, 212, 106,
	  197, 242,  98,  43,  39, 175, 254, 145, 190,  84, 118, 222, 187, 136,
	  120, 163, 236, 249
};

byte	MS_RndT (void)
{
	rndofs++;
	return rndtable[rndofs];
}