m_misc.c

//
// Copyright (C) 1993-1996 Id Software, Inc.
// Copyright (C) 2016-2017 Alexey Khokholov (Nuke.YKT)
// Copyright (C) 2017 Alexandre-Xavier Labonté-Lamoureux
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// DESCRIPTION:
//	Main loop menu stuff.
//	Default Config File.
//	PCX Screenshots.
//

#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>

#include <ctype.h>


#include "doomdef.h"

#include "z_zone.h"

#include "w_wad.h"

#include "i_system.h"
#include "v_video.h"

#include "hu_stuff.h"

// State.
#include "doomstat.h"

// Data.
#include "dstrings.h"

#include "m_misc.h"


int		myargc;
char**		myargv;

//
// M_DrawText
// Returns the final X coordinate
// HU_Init must have been called to init the font
//
extern patch_t*		hu_font[HU_FONTSIZE];

int
M_DrawText
( int		x,
  int		y,
  boolean	direct,
  char*		string )
{
    int 	c;
    int		w;

    while (*string)
    {
	c = toupper(*string) - HU_FONTSTART;
	string++;
	if (c < 0 || c> HU_FONTSIZE)
	{
	    x += 4;
	    continue;
	}
		
	w = SHORT (hu_font[c]->width);
	if (x+w > SCREENWIDTH)
	    break;
	if (direct)
	    V_DrawPatchDirect(x, y, 0, hu_font[c]);
	else
	    V_DrawPatch(x, y, 0, hu_font[c]);
	x+=w;
    }

    return x;
}

//
// M_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 M_CheckParm (char *check)
{
    int		i;

    for (i = 1;i<myargc;i++)
    {
	if ( !strcasecmp(check, myargv[i]) )
	    return i;
    }

    return 0;
}


//
// M_Random
// Returns a 0-255 number
//
unsigned char 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
};

int	rndindex = 0;
int	prndindex = 0;

// Which one is deterministic?
int P_Random (void)
{
    prndindex = (prndindex+1)&0xff;
    return rndtable[prndindex];
}

int M_Random (void)
{
    rndindex = (rndindex+1)&0xff;
    return rndtable[rndindex];
}

void M_ClearRandom (void)
{
    rndindex = prndindex = 0;
}

void M_ClearBox (fixed_t *box)
{
    box[BOXTOP] = box[BOXRIGHT] = MININT;
    box[BOXBOTTOM] = box[BOXLEFT] = MAXINT;
}

void
M_AddToBox
( fixed_t*	box,
  fixed_t	x,
  fixed_t	y )
{
    if (x<box[BOXLEFT])
	box[BOXLEFT] = x;
    else if (x>box[BOXRIGHT])
	box[BOXRIGHT] = x;
    if (y<box[BOXBOTTOM])
	box[BOXBOTTOM] = y;
    else if (y>box[BOXTOP])
	box[BOXTOP] = y;
}

//
// M_WriteFile
//
#ifndef O_BINARY
#define O_BINARY 0
#endif

boolean
M_WriteFile
( char const*	name,
  void*		source,
  int		length )
{
    int		handle;
    int		count;
	
    handle = open ( name, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);

    if (handle == -1)
	return false;

    count = write (handle, source, length);
    close (handle);
	
    if (count < length)
	return false;
		
    return true;
}


//
// M_ReadFile
//
int
M_ReadFile
( char const*	name,
  byte**	buffer )
{
    int	handle, count, length;
    struct stat	fileinfo;
    byte		*buf;
	
    handle = open (name, O_RDONLY | O_BINARY, 0666);
    if (handle == -1)
	I_Error ("Couldn't read file %s", name);
    if (fstat (handle,&fileinfo) == -1)
	I_Error ("Couldn't read file %s", name);
    length = fileinfo.st_size;
    buf = Z_Malloc (length, PU_STATIC, NULL);
    count = read (handle, buf, length);
    close (handle);
	
    if (count < length)
	I_Error ("Couldn't read file %s", name);
		
    *buffer = buf;
    return length;
}


//
// DEFAULTS
//
int		usemouse;
int		usejoystick;

extern int	key_right;
extern int	key_left;
extern int	key_up;
extern int	key_down;

extern int	key_strafeleft;
extern int	key_straferight;

extern int	key_fire;
extern int	key_use;
extern int	key_strafe;
extern int	key_speed;

extern int	mousebfire;
extern int	mousebstrafe;
extern int	mousebforward;

extern int	joybfire;
extern int	joybstrafe;
extern int	joybuse;
extern int	joybspeed;

extern int	viewwidth;
extern int	viewheight;

extern int	mouseSensitivity;
extern int	showMessages;

extern int	detailLevel;

extern int	screenblocks;

extern int	showMessages;

// machine-independent sound params
extern	int	numChannels;

extern int sfxVolume;
extern int musicVolume;
extern int snd_SBport, snd_SBirq, snd_SBdma;
extern int snd_Mport;

extern char*	chat_macros[];



typedef struct
{
    char*	name;
    int*	location;
    int		defaultvalue;
    int		scantranslate;		// PC scan code hack
    int		untranslated;		// lousy hack
} default_t;

#define SC_UPARROW              0x48
#define SC_DOWNARROW            0x50
#define SC_LEFTARROW            0x4b
#define SC_RIGHTARROW           0x4d
#define SC_RCTRL                0x1d
#define SC_RALT                 0x38
#define SC_RSHIFT               0x36
#define SC_SPACE                0x39
#define SC_COMMA                0x33
#define SC_PERIOD               0x34
#define SC_PAGEUP               0x49
#define SC_INSERT               0x52
#define SC_HOME                 0x47
#define SC_PAGEDOWN             0x51
#define SC_DELETE               0x53
#define SC_END                  0x4f
#define SC_ENTER                0x1c

#define SC_KEY_A                0x1e
#define SC_KEY_B                0x30
#define SC_KEY_C                0x2e
#define SC_KEY_D                0x20
#define SC_KEY_E                0x12
#define SC_KEY_F                0x21
#define SC_KEY_G                0x22
#define SC_KEY_H                0x23
#define SC_KEY_I                0x17
#define SC_KEY_J                0x24
#define SC_KEY_K                0x25
#define SC_KEY_L                0x26
#define SC_KEY_M                0x32
#define SC_KEY_N                0x31
#define SC_KEY_O                0x18
#define SC_KEY_P                0x19
#define SC_KEY_Q                0x10
#define SC_KEY_R                0x13
#define SC_KEY_S                0x1f
#define SC_KEY_T                0x14
#define SC_KEY_U                0x16
#define SC_KEY_V                0x2f
#define SC_KEY_W                0x11
#define SC_KEY_X                0x2d
#define SC_KEY_Y                0x15
#define SC_KEY_Z                0x2c
#define SC_BACKSPACE            0x0e

default_t	defaults[] =
{
    {"mouse_sensitivity",&mouseSensitivity, 5},
    {"sfx_volume",&sfxVolume, 8},
    {"music_volume",&musicVolume, 8},
    {"show_messages",&showMessages, 1},
    
    {"key_right",&key_right, SC_RIGHTARROW, 1},
    {"key_left",&key_left, SC_LEFTARROW, 1},
    {"key_up",&key_up, SC_UPARROW, 1},
    {"key_down",&key_down, SC_DOWNARROW, 1},
    {"key_strafeleft",&key_strafeleft, SC_COMMA, 1},
    {"key_straferight",&key_straferight, SC_PERIOD, 1},

    {"key_fire",&key_fire, SC_RCTRL, 1},
    {"key_use",&key_use, SC_SPACE, 1},
    {"key_strafe",&key_strafe, SC_RALT, 1},
    {"key_speed",&key_speed, SC_RSHIFT, 1},

    {"use_mouse",&usemouse, 1},
    {"mouseb_fire",&mousebfire,0},
    {"mouseb_strafe",&mousebstrafe,1},
    {"mouseb_forward",&mousebforward,2},

    {"use_joystick",&usejoystick, 0},
    {"joyb_fire",&joybfire,0},
    {"joyb_strafe",&joybstrafe,1},
    {"joyb_use",&joybuse,3},
    {"joyb_speed",&joybspeed,2},

    {"screenblocks",&screenblocks, 9},
    {"detaillevel",&detailLevel, 0},

    {"snd_channels",&numChannels, 3},
    {"snd_musicdevice",&snd_DesiredMusicDevice, 0},
    {"snd_sfxdevice",&snd_DesiredSfxDevice, 0},
    {"snd_sbport",&snd_SBport, 0x220},
    {"snd_sbirq",&snd_SBirq, 5},
    {"snd_sbdma",&snd_SBdma, 1},
    {"snd_mport",&snd_Mport, 0x330},

    {"usegamma",&usegamma, 0},

    {"chatmacro0", (int *) &chat_macros[0], (int) HUSTR_CHATMACRO0 },
    {"chatmacro1", (int *) &chat_macros[1], (int) HUSTR_CHATMACRO1 },
    {"chatmacro2", (int *) &chat_macros[2], (int) HUSTR_CHATMACRO2 },
    {"chatmacro3", (int *) &chat_macros[3], (int) HUSTR_CHATMACRO3 },
    {"chatmacro4", (int *) &chat_macros[4], (int) HUSTR_CHATMACRO4 },
    {"chatmacro5", (int *) &chat_macros[5], (int) HUSTR_CHATMACRO5 },
    {"chatmacro6", (int *) &chat_macros[6], (int) HUSTR_CHATMACRO6 },
    {"chatmacro7", (int *) &chat_macros[7], (int) HUSTR_CHATMACRO7 },
    {"chatmacro8", (int *) &chat_macros[8], (int) HUSTR_CHATMACRO8 },
    {"chatmacro9", (int *) &chat_macros[9], (int) HUSTR_CHATMACRO9 }

};

int	numdefaults;
char*	defaultfile;


//
// M_SaveDefaults
//
void M_SaveDefaults (void)
{
    int		i;
    int		v;
    FILE*	f;
	
    f = fopen (defaultfile, "w");
    if (!f)
	return; // can't write the file, but don't complain
		
    for (i=0 ; i<numdefaults ; i++)
    {
        if (defaults[i].scantranslate)
            defaults[i].location = &defaults[i].untranslated;

	if (defaults[i].defaultvalue > -0xfff
	    && defaults[i].defaultvalue < 0xfff)
	{
	    v = *defaults[i].location;
	    fprintf (f,"%s\t\t%i\n",defaults[i].name,v);
	} else {
	    fprintf (f,"%s\t\t\"%s\"\n",defaults[i].name,
		     * (char **) (defaults[i].location));
	}
    }
	
    fclose (f);
}


//
// M_LoadDefaults
//
extern byte	scantokey[128];

void M_LoadDefaults (void)
{
    int		i;
    int		len;
    FILE*	f;
    char	def[80];
    char	strparm[100];
    char*	newstring;
    int		parm;
    boolean	isstring;
    
    // set everything to base values
    numdefaults = sizeof(defaults)/sizeof(defaults[0]);
    for (i=0 ; i<numdefaults ; i++)
	*defaults[i].location = defaults[i].defaultvalue;
    
    // check for a custom default file
    i = M_CheckParm ("-config");
    if (i && i<myargc-1)
    {
	defaultfile = myargv[i+1];
	printf ("	default file: %s\n",defaultfile);
    }
    else
	defaultfile = basedefault;
    
    // read the file in, overriding any set defaults
    f = fopen (defaultfile, "r");
    if (f)
    {
	while (!feof(f))
	{
	    isstring = false;
	    if (fscanf (f, "%79s %99[^\n]\n", def, strparm) == 2)
	    {
		if (strparm[0] == '"')
		{
		    // get a string default
		    isstring = true;
		    len = strlen(strparm);
		    newstring = (char *) malloc(len);
		    strparm[len-1] = 0;
		    strcpy(newstring, strparm+1);
		}
		else if (strparm[0] == '0' && strparm[1] == 'x')
		    sscanf(strparm+2, "%x", &parm);
		else
		    sscanf(strparm, "%i", &parm);
		for (i=0 ; i<numdefaults ; i++)
		    if (!strcmp(def, defaults[i].name))
		    {
			if (!isstring)
			    *defaults[i].location = parm;
			else
			    *defaults[i].location =
				(int) newstring;
			break;
		    }
	    }
	}
		
	fclose (f);
    }

    for (i = 0; i < numdefaults; i++)
    {
        if (defaults[i].scantranslate)
        {
            parm = *defaults[i].location;
            defaults[i].untranslated = parm;
            *defaults[i].location = scantokey[parm];
        }
    }
}


//
// SCREEN SHOTS
//


typedef struct
{
    char		manufacturer;
    char		version;
    char		encoding;
    char		bits_per_pixel;

    unsigned short	xmin;
    unsigned short	ymin;
    unsigned short	xmax;
    unsigned short	ymax;
    
    unsigned short	hres;
    unsigned short	vres;

    unsigned char	palette[48];
    
    char		reserved;
    char		color_planes;
    unsigned short	bytes_per_line;
    unsigned short	palette_type;
    
    char		filler[58];
    unsigned char	data;		// unbounded
} pcx_t;


//
// WritePCXfile
//
void
WritePCXfile
( char*		filename,
  byte*		data,
  int		width,
  int		height,
  byte*		palette )
{
    int		i;
    int		length;
    pcx_t*	pcx;
    byte*	pack;
	
    pcx = Z_Malloc (width*height*2+1000, PU_STATIC, NULL);

    pcx->manufacturer = 0x0a;		// PCX id
    pcx->version = 5;			// 256 color
    pcx->encoding = 1;			// uncompressed
    pcx->bits_per_pixel = 8;		// 256 color
    pcx->xmin = 0;
    pcx->ymin = 0;
    pcx->xmax = SHORT(width-1);
    pcx->ymax = SHORT(height-1);
    pcx->hres = SHORT(width);
    pcx->vres = SHORT(height);
    memset (pcx->palette,0,sizeof(pcx->palette));
    pcx->color_planes = 1;		// chunky image
    pcx->bytes_per_line = SHORT(width);
    pcx->palette_type = SHORT(2);	// not a grey scale
    memset (pcx->filler,0,sizeof(pcx->filler));


    // pack the image
    pack = &pcx->data;
	
    for (i=0 ; i<width*height ; i++)
    {
	if ( (*data & 0xc0) != 0xc0)
	    *pack++ = *data++;
	else
	{
	    *pack++ = 0xc1;
	    *pack++ = *data++;
	}
    }
    
    // write the palette
    *pack++ = 0x0c;	// palette ID byte
    for (i=0 ; i<768 ; i++)
	*pack++ = *palette++;
    
    // write output file
    length = pack - (byte *)pcx;
    M_WriteFile (filename, pcx, length);

    Z_Free (pcx);
}


//
// M_ScreenShot
//
void M_ScreenShot (void)
{
    int		i;
    byte*	linear;
    char	lbmname[12];
    
    // munge planar buffer to linear
    linear = screens[2];
    I_ReadScreen (linear);
    
    // find a file name to save it to
    strcpy(lbmname,"DOOM00.pcx");
		
    for (i=0 ; i<=99 ; i++)
    {
	lbmname[4] = i/10 + '0';
	lbmname[5] = i%10 + '0';
	if (access(lbmname,0) == -1)
	    break;	// file doesn't exist
    }
    if (i==100)
	I_Error ("M_ScreenShot: Couldn't create a PCX");
    
    // save the pcx file
    WritePCXfile (lbmname, linear,
		  SCREENWIDTH, SCREENHEIGHT,
		  W_CacheLumpName ("PLAYPAL",PU_CACHE));
	
    players[consoleplayer].message = "screen shot";
}