rockbox - My Rockbox tree

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/* Emacs style mode select   -*- C++ -*-
 *-----------------------------------------------------------------------------
 *
 *
 *  PrBoom a Doom port merged with LxDoom and LSDLDoom
 *  based on BOOM, a modified and improved DOOM engine
 *  Copyright (C) 1999 by
 *  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
 *  Copyright (C) 1999-2000 by
 *  Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
 *
 *  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.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 *  02111-1307, USA.
 *
 * DESCRIPTION:  Heads-up displays
 *
 *-----------------------------------------------------------------------------
 */

// killough 5/3/98: remove unnecessary headers

#include "doomstat.h"
#include "hu_stuff.h"
#include "hu_lib.h"
#include "st_stuff.h" /* jff 2/16/98 need loc of status bar */
#include "w_wad.h"
#include "s_sound.h"
#include "dstrings.h"
#include "sounds.h"
//#include "d_deh.h"   /* Ty 03/27/98 - externalization of mapnamesx arrays */
#include "g_game.h"
#include "m_swap.h"

// global heads up display controls

int hud_active;       //jff 2/17/98 controls heads-up display mode
int hud_displayed;    //jff 2/23/98 turns heads-up display on/off
int hud_nosecrets;    //jff 2/18/98 allows secrets line to be disabled in HUD
int hud_distributed;  //jff 3/4/98 display HUD in different places on screen
int hud_graph_keys=1; //jff 3/7/98 display HUD keys as graphics

//
// Locally used constants, shortcuts.
//
// Ty 03/28/98 -
// These four shortcuts modifed to reflect char ** of mapnamesx[]
#define HU_TITLE  (*mapnames[(gameepisode-1)*9+gamemap-1])
#define HU_TITLE2 (*mapnames2[gamemap-1])
#define HU_TITLEP (*mapnamesp[gamemap-1])
#define HU_TITLET (*mapnamest[gamemap-1])
#define HU_TITLEHEIGHT  1
#define HU_TITLEX 0
//jff 2/16/98 change 167 to ST_Y-1
// CPhipps - changed to ST_TY
// proff - changed to 200-ST_HEIGHT for stretching
#define HU_TITLEY ((200-ST_HEIGHT) - 1 - SHORT(hu_font[0].height))

//jff 2/16/98 add coord text widget coordinates
// proff - changed to SCREENWIDTH to 320 for stretching
#define HU_COORDX (320 - 13*SHORT(hu_font2['A'-HU_FONTSTART].width))
//jff 3/3/98 split coord widget into three lines in upper right of screen
#define HU_COORDX_Y (1 + 0*SHORT(hu_font['A'-HU_FONTSTART].height))
#define HU_COORDY_Y (2 + 1*SHORT(hu_font['A'-HU_FONTSTART].height))
#define HU_COORDZ_Y (3 + 2*SHORT(hu_font['A'-HU_FONTSTART].height))

//jff 2/16/98 add ammo, health, armor widgets, 2/22/98 less gap
#define HU_GAPY 8
#define HU_HUDHEIGHT (6*HU_GAPY)
#define HU_HUDX 2
#define HU_HUDY (200-HU_HUDHEIGHT-1)
#define HU_MONSECX (HU_HUDX)
#define HU_MONSECY (HU_HUDY+0*HU_GAPY)
#define HU_KEYSX   (HU_HUDX)
//jff 3/7/98 add offset for graphic key widget
#define HU_KEYSGX  (HU_HUDX+4*SHORT(hu_font2['A'-HU_FONTSTART].width))
#define HU_KEYSY   (HU_HUDY+1*HU_GAPY)
#define HU_WEAPX   (HU_HUDX)
#define HU_WEAPY   (HU_HUDY+2*HU_GAPY)
#define HU_AMMOX   (HU_HUDX)
#define HU_AMMOY   (HU_HUDY+3*HU_GAPY)
#define HU_HEALTHX (HU_HUDX)
#define HU_HEALTHY (HU_HUDY+4*HU_GAPY)
#define HU_ARMORX  (HU_HUDX)
#define HU_ARMORY  (HU_HUDY+5*HU_GAPY)

//jff 3/4/98 distributed HUD positions
#define HU_HUDX_LL 2
#define HU_HUDY_LL (200-2*HU_GAPY-1)
// proff/nicolas 09/20/98: Changed for high-res
#define HU_HUDX_LR (320-120)
#define HU_HUDY_LR (200-2*HU_GAPY-1)
// proff/nicolas 09/20/98: Changed for high-res
#define HU_HUDX_UR (320-96)
#define HU_HUDY_UR 2
#define HU_MONSECX_D (HU_HUDX_LL)
#define HU_MONSECY_D (HU_HUDY_LL+0*HU_GAPY)
#define HU_KEYSX_D   (HU_HUDX_LL)
#define HU_KEYSGX_D  (HU_HUDX_LL+4*SHORT(hu_font2['A'-HU_FONTSTART].width))
#define HU_KEYSY_D   (HU_HUDY_LL+1*HU_GAPY)
#define HU_WEAPX_D   (HU_HUDX_LR)
#define HU_WEAPY_D   (HU_HUDY_LR+0*HU_GAPY)
#define HU_AMMOX_D   (HU_HUDX_LR)
#define HU_AMMOY_D   (HU_HUDY_LR+1*HU_GAPY)
#define HU_HEALTHX_D (HU_HUDX_UR)
#define HU_HEALTHY_D (HU_HUDY_UR+0*HU_GAPY)
#define HU_ARMORX_D  (HU_HUDX_UR)
#define HU_ARMORY_D  (HU_HUDY_UR+1*HU_GAPY)

//#define HU_INPUTTOGGLE  't' // not used                           // phares
#define HU_INPUTX HU_MSGX
#define HU_INPUTY (HU_MSGY + HU_MSGHEIGHT*(SHORT(hu_font[0].height) +1))
#define HU_INPUTWIDTH 64
#define HU_INPUTHEIGHT  1

#define key_alt KEY_RALT
#define key_shift KEY_RSHIFT

const char* chat_macros[] =
   // Ty 03/27/98 - *not* externalized
   // CPhipps - const char*
   {
      HUSTR_CHATMACRO1,
      HUSTR_CHATMACRO1,
      HUSTR_CHATMACRO1,
      HUSTR_CHATMACRO1,
      HUSTR_CHATMACRO1,
      HUSTR_CHATMACRO1,
      HUSTR_CHATMACRO1,
      HUSTR_CHATMACRO1,
      HUSTR_CHATMACRO1,
      HUSTR_CHATMACRO1
   };

const char* player_names[] =
   // Ty 03/27/98 - *not* externalized
   // CPhipps - const char*
   {
      HUSTR_PLRGREEN,
      HUSTR_PLRINDIGO,
      HUSTR_PLRBROWN,
      HUSTR_PLRRED
   };

//jff 3/17/98 translate player colmap to text color ranges
int plyrcoltran[MAXPLAYERS]={CR_GREEN,CR_GRAY,CR_BROWN,CR_RED};

char chat_char;                 // remove later.
static player_t*  plr;

// font sets
patchnum_t hu_font[HU_FONTSIZE];
patchnum_t *hu_font2;
patchnum_t *hu_fontk;//jff 3/7/98 added for graphic key indicators
patchnum_t hu_msgbg[9];          //jff 2/26/98 add patches for message background

// widgets
static hu_textline_t  w_title;
static hu_stext_t     w_message;
static hu_itext_t     w_chat;
static hu_itext_t     w_inputbuffer[MAXPLAYERS];
static hu_textline_t  w_coordx; //jff 2/16/98 new coord widget for automap
static hu_textline_t  w_coordy; //jff 3/3/98 split coord widgets automap
static hu_textline_t  w_coordz; //jff 3/3/98 split coord widgets automap
static hu_textline_t  w_ammo;   //jff 2/16/98 new ammo widget for hud
static hu_textline_t  w_health; //jff 2/16/98 new health widget for hud
static hu_textline_t  w_armor;  //jff 2/16/98 new armor widget for hud
static hu_textline_t  w_weapon; //jff 2/16/98 new weapon widget for hud
static hu_textline_t  w_keys;   //jff 2/16/98 new keys widget for hud
static hu_textline_t  w_gkeys;  //jff 3/7/98 graphic keys widget for hud
static hu_textline_t  w_monsec; //jff 2/16/98 new kill/secret widget for hud
static hu_mtext_t     w_rtext;  //jff 2/26/98 text message refresh widget

static boolean    always_off = false;
static char       chat_dest[MAXPLAYERS];
boolean           chat_on;
static boolean    message_on;
static boolean    message_list; //2/26/98 enable showing list of messages
boolean           message_dontfuckwithme;
static boolean    message_nottobefuckedwith;
static int        message_counter;
extern int        showMessages;
extern boolean    automapactive;
static boolean    headsupactive = false;

//jff 2/16/98 hud supported automap colors added
int hudcolor_titl;  // color range of automap level title
int hudcolor_xyco;  // color range of new coords on automap
//jff 2/16/98 hud text colors, controls added
int hudcolor_mesg;  // color range of scrolling messages
int hudcolor_chat;  // color range of chat lines
int hud_msg_lines;  // number of message lines in window
//jff 2/26/98 hud text colors, controls added
int hudcolor_list;  // list of messages color
int hud_list_bgon;  // enable for solid window background for message list

//jff 2/16/98 initialization strings for ammo, health, armor widgets
static char *hud_coordstrx;
static char *hud_coordstry;
static char *hud_coordstrz;
static char *hud_ammostr;
static char *hud_healthstr;
static char *hud_armorstr;
static char *hud_weapstr;
static char *hud_keysstr;
static char *hud_gkeysstr; //jff 3/7/98 add support for graphic key display
static char *hud_monsecstr;

//jff 2/16/98 declaration of color switch points
extern int ammo_red;
extern int ammo_yellow;
extern int health_red;
extern int health_yellow;
extern int health_green;
extern int armor_red;
extern int armor_yellow;
extern int armor_green;

//
// Builtin map names.
// The actual names can be found in DStrings.h.
//
// Ty 03/27/98 - externalized map name arrays - now in d_deh.c
// and converted to arrays of pointers to char *
// See modified HUTITLEx macros
extern char **mapnames[];
extern char **mapnames2[];
extern char **mapnamesp[];
extern char **mapnamest[];

// key tables
// jff 5/10/98 french support removed,
// as it was not being used and couldn't be easily tested
//
const char* shiftxform;

const char english_shiftxform[] =
   {
      0,
      1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
      11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
      21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
      31,
      ' ', '!', '"', '#', '$', '%', '&',
      '"', // shift-'
      '(', ')', '*', '+',
      '<', // shift-,
      '_', // shift--
      '>', // shift-.
      '?', // shift-/
      ')', // shift-0
      '!', // shift-1
      '@', // shift-2
      '#', // shift-3
      '$', // shift-4
      '%', // shift-5
      '^', // shift-6
      '&', // shift-7
      '*', // shift-8
      '(', // shift-9
      ':',
      ':', // shift-;
      '<',
      '+', // shift-=
      '>', '?', '@',
      'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
      'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
      '[', // shift-[
      '!', // shift-backslash - OH MY GOD DOES WATCOM SUCK
      ']', // shift-]
      '"', '_',
      '\'', // shift-`
      'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
      'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
      '{', '|', '}', '~', 127
   };

//
// HU_Init()
//
// Initialize the heads-up display, text that overwrites the primary display
//
// Passed nothing, returns nothing
//
void HU_Init(void)
{
   int  i;
   int  j;
   char  buffer[9];

   shiftxform = english_shiftxform;

   // malloc all the strings, trying to get size down
   hud_ammostr=malloc(80*sizeof(char));
   hud_healthstr=malloc(80*sizeof(char));
   hud_armorstr=malloc(80*sizeof(char));
   hud_weapstr=malloc(80*sizeof(char));
   hud_keysstr=malloc(80*sizeof(char));
   hud_gkeysstr=malloc(80*sizeof(char));
   hud_monsecstr=malloc(80*sizeof(char));
   hud_coordstrx=malloc(32*sizeof(char));
   hud_coordstry=malloc(32*sizeof(char));
   hud_coordstrz=malloc(32*sizeof(char));
   hu_fontk=malloc(HU_FONTSIZE*sizeof(patchnum_t));
   hu_font2=malloc(HU_FONTSIZE*sizeof(patchnum_t));

   // load the heads-up font
   j = HU_FONTSTART;
   for (i=0;i<HU_FONTSIZE;i++,j++)
   {
      if ('0'<=j && j<='9')
      {
         snprintf(buffer, sizeof(buffer), "DIG%d",j-48);
         R_SetPatchNum(hu_font2 +i, buffer);
         snprintf(buffer, sizeof(buffer), "STCFN%s%d", (j/10>0?"0":"00"), j); //NOTE ROCKHACK: "STCFN%.3d"
         R_SetPatchNum(&hu_font[i], buffer);
      }
      else if ('A'<=j && j<='Z')
      {
         snprintf(buffer, sizeof(buffer), "DIG%c",j);
         R_SetPatchNum(hu_font2 +i, buffer);
         snprintf(buffer, sizeof(buffer), "STCFN%s%d", (j/10>0?"0":"00"), j); //NOTE ROCKHACK: "STCFN%.3d"
         R_SetPatchNum(&hu_font[i], buffer);
      }
      else if (j=='-')
      {
         R_SetPatchNum(hu_font2 +i, "DIG45");
         R_SetPatchNum(&hu_font[i], "STCFN045");
      }
      else if (j=='/')
      {
         R_SetPatchNum(hu_font2 +i, "DIG47");
         R_SetPatchNum(&hu_font[i], "STCFN047");
      }
      else if (j==':')
      {
         R_SetPatchNum(hu_font2 +i, "DIG58");
         R_SetPatchNum(&hu_font[i], "STCFN058");
      }
      else if (j=='[')
      {
         R_SetPatchNum(hu_font2 +i, "DIG91");
         R_SetPatchNum(&hu_font[i], "STCFN091");
      }
      else if (j==']')
      {
         R_SetPatchNum(hu_font2 +i, "DIG93");
         R_SetPatchNum(&hu_font[i], "STCFN093");
      }
      else if (j<97)
      {
         snprintf(buffer, sizeof(buffer), "STCFN%s%d", (j/10>0?"0":"00"), j); //NOTE ROCKHACK: "STCFN%.3d"
         R_SetPatchNum(hu_font2 +i, buffer);
         R_SetPatchNum(&hu_font[i], buffer);
         //jff 2/23/98 make all font chars defined, useful or not
      }
      else if (j>122)
      {
         snprintf(buffer, sizeof(buffer), "STBR%d", j); //NOTE: "STBR%.3d"
         R_SetPatchNum(hu_font2 +i, buffer);
         R_SetPatchNum(&hu_font[i], buffer);
      }
      else
         hu_font[i] = hu_font[0]; //jff 2/16/98 account for gap
   }

   // CPhipps - load patches for message background
   for (i=0; i<9; i++) {
      snprintf(buffer, sizeof(buffer), "BOX%c%c", "UCL"[i/3], "LCR"[i%3]);
      R_SetPatchNum(&hu_msgbg[i], buffer);
   }

   // CPhipps - load patches for keys and double keys
   for (i=0; i<6; i++) {
      snprintf(buffer, sizeof(buffer), "STKEYS%d", i);
      R_SetPatchNum(hu_fontk+i, buffer);
   }
}

//
// HU_Stop()
//
// Make the heads-up displays inactive
//
// Passed nothing, returns nothing
//
void HU_Stop(void)
{
   headsupactive = false;
}

//
// HU_Start(void)
//
// Create and initialize the heads-up widgets, software machines to
// maintain, update, and display information over the primary display
//
// This routine must be called after any change to the heads up configuration
// in order for the changes to take effect in the actual displays
//
// Passed nothing, returns nothing
//
void HU_Start(void)
{

   int   i;
   const char* s; /* cph - const */

   if (headsupactive)                    // stop before starting
      HU_Stop();

   plr = &players[displayplayer];        // killough 3/7/98
   message_on = false;
   message_dontfuckwithme = false;
   message_nottobefuckedwith = false;
   chat_on = false;

   // create the message widget
   // messages to player in upper-left of screen
   HUlib_initSText
   (
      &w_message,
      HU_MSGX,
      HU_MSGY,
      HU_MSGHEIGHT,
      hu_font,
      HU_FONTSTART,
      hudcolor_mesg,
      &message_on
   );

   //jff 2/16/98 added some HUD widgets
   // create the map title widget - map title display in lower left of automap
   HUlib_initTextLine
   (
      &w_title,
      HU_TITLEX,
      HU_TITLEY,
      hu_font,
      HU_FONTSTART,
      hudcolor_titl
   );

   // create the hud health widget
   // bargraph and number for amount of health,
   // lower left or upper right of screen
   HUlib_initTextLine
   (
      &w_health,
      hud_distributed? HU_HEALTHX_D : HU_HEALTHX,  //3/4/98 distribute
      hud_distributed? HU_HEALTHY_D : HU_HEALTHY,
      hu_font2,
      HU_FONTSTART,
      CR_GREEN
   );

   // create the hud armor widget
   // bargraph and number for amount of armor,
   // lower left or upper right of screen
   HUlib_initTextLine
   (
      &w_armor,
      hud_distributed? HU_ARMORX_D : HU_ARMORX,    //3/4/98 distribute
      hud_distributed? HU_ARMORY_D : HU_ARMORY,
      hu_font2,
      HU_FONTSTART,
      CR_GREEN
   );

   // create the hud ammo widget
   // bargraph and number for amount of ammo for current weapon,
   // lower left or lower right of screen
   HUlib_initTextLine
   (
      &w_ammo,
      hud_distributed? HU_AMMOX_D : HU_AMMOX,      //3/4/98 distribute
      hud_distributed? HU_AMMOY_D : HU_AMMOY,
      hu_font2,
      HU_FONTSTART,
      CR_GOLD
   );

   // create the hud weapons widget
   // list of numbers of weapons possessed
   // lower left or lower right of screen
   HUlib_initTextLine
   (
      &w_weapon,
      hud_distributed? HU_WEAPX_D : HU_WEAPX,      //3/4/98 distribute
      hud_distributed? HU_WEAPY_D : HU_WEAPY,
      hu_font2,
      HU_FONTSTART,
      CR_GRAY
   );

   // create the hud keys widget
   // display of key letters possessed
   // lower left of screen
   HUlib_initTextLine
   (
      &w_keys,
      hud_distributed? HU_KEYSX_D : HU_KEYSX,      //3/4/98 distribute
      hud_distributed? HU_KEYSY_D : HU_KEYSY,
      hu_font2,
      HU_FONTSTART,
      CR_GRAY
   );

   // create the hud graphic keys widget
   // display of key graphics possessed
   // lower left of screen
   HUlib_initTextLine
   (
      &w_gkeys,
      hud_distributed? HU_KEYSGX_D : HU_KEYSGX,    //3/4/98 distribute
      hud_distributed? HU_KEYSY_D : HU_KEYSY,
      hu_fontk,
      HU_FONTSTART,
      CR_RED
   );

   // create the hud monster/secret widget
   // totals and current values for kills, items, secrets
   // lower left of screen
   HUlib_initTextLine
   (
      &w_monsec,
      hud_distributed? HU_MONSECX_D : HU_MONSECX,  //3/4/98 distribute
      hud_distributed? HU_MONSECY_D : HU_MONSECY,
      hu_font2,
      HU_FONTSTART,
      CR_GRAY
   );

   // create the hud text refresh widget
   // scrolling display of last hud_msg_lines messages received
   if (hud_msg_lines>HU_MAXMESSAGES)
      hud_msg_lines=HU_MAXMESSAGES;
   //jff 4/21/98 if setup has disabled message list while active, turn it off
   message_list = hud_msg_lines > 1; //jff 8/8/98 initialize both ways
   //jff 2/26/98 add the text refresh widget initialization
   HUlib_initMText
   (
      &w_rtext,
      0,
      0,
      320,
      //    SCREENWIDTH,
      (hud_msg_lines+2)*HU_REFRESHSPACING,
      hu_font,
      HU_FONTSTART,
      hudcolor_list,
      hu_msgbg,
      &message_list
   );

   // initialize the automap's level title widget
   if (gamestate == GS_LEVEL) /* cph - stop SEGV here when not in level */
      switch (gamemode)
      {
      case shareware:
      case registered:
      case retail:
         s = HU_TITLE;
         break;

      case commercial:
      default:  // Ty 08/27/98 - modified to check mission for TNT/Plutonia
         s = (gamemission==pack_tnt)  ? HU_TITLET :
             (gamemission==pack_plut) ? HU_TITLEP : HU_TITLE2;
         break;
      } else s = "";
   while (*s)
      HUlib_addCharToTextLine(&w_title, *(s++));

   // create the automaps coordinate widget
   // jff 3/3/98 split coord widget into three lines: x,y,z
   // jff 2/16/98 added
   HUlib_initTextLine
   (
      &w_coordx,
      HU_COORDX,
      HU_COORDX_Y,
      hu_font,
      HU_FONTSTART,
      hudcolor_xyco
   );
   HUlib_initTextLine
   (
      &w_coordy,
      HU_COORDX,
      HU_COORDY_Y,
      hu_font,
      HU_FONTSTART,
      hudcolor_xyco
   );
   HUlib_initTextLine
   (
      &w_coordz,
      HU_COORDX,
      HU_COORDZ_Y,
      hu_font,
      HU_FONTSTART,
      hudcolor_xyco
   );

   // initialize the automaps coordinate widget
   //jff 3/3/98 split coordstr widget into 3 parts
   snprintf(hud_coordstrx,32*sizeof(char),"X: %d",0); //jff 2/22/98 added z
   s = hud_coordstrx;
   while (*s)
      HUlib_addCharToTextLine(&w_coordx, *(s++));
   snprintf(hud_coordstry,32*sizeof(char),"Y: %d",0); //jff 3/3/98 split x,y,z
   s = hud_coordstry;
   while (*s)
      HUlib_addCharToTextLine(&w_coordy, *(s++));
   snprintf(hud_coordstrz,32*sizeof(char),"Z: %d",0); //jff 3/3/98 split x,y,z
   s = hud_coordstrz;
   while (*s)
      HUlib_addCharToTextLine(&w_coordz, *(s++));

   //jff 2/16/98 initialize ammo widget
   strcpy(hud_ammostr,"AMM ");
   s = hud_ammostr;
   while (*s)
      HUlib_addCharToTextLine(&w_ammo, *(s++));

   //jff 2/16/98 initialize health widget
   strcpy(hud_healthstr,"HEL ");
   s = hud_healthstr;
   while (*s)
      HUlib_addCharToTextLine(&w_health, *(s++));

   //jff 2/16/98 initialize armor widget
   strcpy(hud_armorstr,"ARM ");
   s = hud_armorstr;
   while (*s)
      HUlib_addCharToTextLine(&w_armor, *(s++));

   //jff 2/17/98 initialize weapons widget
   strcpy(hud_weapstr,"WEA ");
   s = hud_weapstr;
   while (*s)
      HUlib_addCharToTextLine(&w_weapon, *(s++));

   //jff 2/17/98 initialize keys widget
   if (!deathmatch) //jff 3/17/98 show frags in deathmatch mode
      strcpy(hud_keysstr,"KEY ");
   else
      strcpy(hud_keysstr,"FRG ");
   s = hud_keysstr;
   while (*s)
      HUlib_addCharToTextLine(&w_keys, *(s++));

   //jff 2/17/98 initialize graphic keys widget
   strcpy(hud_gkeysstr," ");
   s = hud_gkeysstr;
   while (*s)
      HUlib_addCharToTextLine(&w_gkeys, *(s++));

   //jff 2/17/98 initialize kills/items/secret widget
   strcpy(hud_monsecstr,"STS ");
   s = hud_monsecstr;
   while (*s)
      HUlib_addCharToTextLine(&w_monsec, *(s++));

   // create the chat widget
   HUlib_initIText
   (
      &w_chat,
      HU_INPUTX,
      HU_INPUTY,
      hu_font,
      HU_FONTSTART,
      hudcolor_chat,
      &chat_on
   );

   // create the inputbuffer widgets, one per player
   for (i=0 ; i<MAXPLAYERS ; i++)
      HUlib_initIText
      (
         &w_inputbuffer[i],
         0,
         0,
         0,
         0,
         hudcolor_chat,
         &always_off
      );

   // now allow the heads-up display to run
   headsupactive = true;
}

//
// HU_MoveHud()
//
// Move the HUD display from distributed to compact mode or vice-versa
//
// Passed nothing, returns nothing
//
//jff 3/9/98 create this externally callable to avoid glitch
// when menu scatter's HUD due to delay in change of position
//
void HU_MoveHud(void)
{
   static int ohud_distributed=-1;

   //jff 3/4/98 move displays around on F5 changing hud_distributed
   if (hud_distributed!=ohud_distributed)
   {
      w_ammo.x =    hud_distributed? HU_AMMOX_D   : HU_AMMOX;
      w_ammo.y =    hud_distributed? HU_AMMOY_D   : HU_AMMOY;
      w_weapon.x =  hud_distributed? HU_WEAPX_D   : HU_WEAPX;
      w_weapon.y =  hud_distributed? HU_WEAPY_D   : HU_WEAPY;
      w_keys.x =    hud_distributed? HU_KEYSX_D   : HU_KEYSX;
      w_keys.y =    hud_distributed? HU_KEYSY_D   : HU_KEYSY;
      w_gkeys.x =   hud_distributed? HU_KEYSGX_D  : HU_KEYSGX;
      w_gkeys.y =   hud_distributed? HU_KEYSY_D   : HU_KEYSY;
      w_monsec.x =  hud_distributed? HU_MONSECX_D : HU_MONSECX;
      w_monsec.y =  hud_distributed? HU_MONSECY_D : HU_MONSECY;
      w_health.x =  hud_distributed? HU_HEALTHX_D : HU_HEALTHX;
      w_health.y =  hud_distributed? HU_HEALTHY_D : HU_HEALTHY;
      w_armor.x =   hud_distributed? HU_ARMORX_D  : HU_ARMORX;
      w_armor.y =   hud_distributed? HU_ARMORY_D  : HU_ARMORY;
   }
   ohud_distributed = hud_distributed;
}

//
// HU_Drawer()
//
// Draw all the pieces of the heads-up display
//
// Passed nothing, returns nothing
//
void HU_Drawer(void)
{
   char *s;
   player_t *plr;
   char ammostr[80];  //jff 3/8/98 allow plenty room for dehacked mods
   char healthstr[80];//jff
   char armorstr[80]; //jff
   int i,doit;

   plr = &players[displayplayer];         // killough 3/7/98
   // draw the automap widgets if automap is displayed
   if (automapmode & am_active)
   {
      // map title
      HUlib_drawTextLine(&w_title, false);

      //jff 2/16/98 output new coord display
      // x-coord
      snprintf(hud_coordstrx,32*sizeof(char),"X: %d", (plr->mo->x)>>FRACBITS);
      HUlib_clearTextLine(&w_coordx);
      s = hud_coordstrx;
      while (*s)
         HUlib_addCharToTextLine(&w_coordx, *(s++));
      HUlib_drawTextLine(&w_coordx, false);

      //jff 3/3/98 split coord display into x,y,z lines
      // y-coord
      snprintf(hud_coordstry,32*sizeof(char),"Y: %d", (plr->mo->y)>>FRACBITS);
      HUlib_clearTextLine(&w_coordy);
      s = hud_coordstry;
      while (*s)
         HUlib_addCharToTextLine(&w_coordy, *(s++));
      HUlib_drawTextLine(&w_coordy, false);

      //jff 3/3/98 split coord display into x,y,z lines
      //jff 2/22/98 added z
      // z-coord
      snprintf(hud_coordstrz,32*sizeof(char),"Z: %d", (plr->mo->z)>>FRACBITS);
      HUlib_clearTextLine(&w_coordz);
      s = hud_coordstrz;
      while (*s)
         HUlib_addCharToTextLine(&w_coordz, *(s++));
      HUlib_drawTextLine(&w_coordz, false);
   }

   // draw the weapon/health/ammo/armor/kills/keys displays if optioned
   //jff 2/17/98 allow new hud stuff to be turned off
   // killough 2/21/98: really allow new hud stuff to be turned off COMPLETELY
   if
   (
      hud_active>0 &&                  // hud optioned on
      hud_displayed &&                 // hud on from fullscreen key
      viewheight==SCREENHEIGHT &&      // fullscreen mode is active
      !(automapmode & am_active)       // automap is not active
   )
   {
      doit = !(gametic&1); //jff 3/4/98 speed update up for slow systems
      if (doit)            //jff 8/7/98 update every time, avoid lag in update
      {
         HU_MoveHud();                  // insure HUD display coords are correct

         // do the hud ammo display
         // clear the widgets internal line
         HUlib_clearTextLine(&w_ammo);
         strcpy(hud_ammostr,"AMM ");
         if (weaponinfo[plr->readyweapon].ammo == am_noammo)
         { // special case for weapon with no ammo selected - blank bargraph + N/A
            strcat(hud_ammostr,"\x7f\x7f\x7f\x7f\x7f\x7f\x7f N/A");
            w_ammo.cm = CR_GRAY;
         }
         else
         {
            int ammo = plr->ammo[weaponinfo[plr->readyweapon].ammo];
            int fullammo = plr->maxammo[weaponinfo[plr->readyweapon].ammo];
            int ammopct = (100*ammo)/fullammo;
            int ammobars = ammopct/4;

            // build the numeric amount init string
            snprintf(ammostr,sizeof(ammostr),"%d/%d",ammo,fullammo);
            // build the bargraph string
            // full bargraph chars
            for (i=4;i<4+ammobars/4;)
               hud_ammostr[i++] = 123;
            // plus one last character with 0,1,2,3 bars
            switch(ammobars%4)
            {
            case 0:
               break;
            case 1:
               hud_ammostr[i++] = 126;
               break;
            case 2:
               hud_ammostr[i++] = 125;
               break;
            case 3:
               hud_ammostr[i++] = 124;
               break;
            }
            // pad string with blank bar characters
            while(i<4+7)
               hud_ammostr[i++] = 127;
            hud_ammostr[i] = '\0';
            strcat(hud_ammostr,ammostr);

            // set the display color from the percentage of total ammo held
            if (ammopct<ammo_red)
               w_ammo.cm = CR_RED;
            else if (ammopct<ammo_yellow)
               w_ammo.cm = CR_GOLD;
            else
               w_ammo.cm = CR_GREEN;
         }
         // transfer the init string to the widget
         s = hud_ammostr;
         while (*s)
            HUlib_addCharToTextLine(&w_ammo, *(s++));
      }
      // display the ammo widget every frame
      HUlib_drawTextLine(&w_ammo, false);

      // do the hud health display
      if (doit)
      {
         int health = plr->health;
         int healthbars = health>100? 25 : health/4;

         // clear the widgets internal line
         HUlib_clearTextLine(&w_health);

         // build the numeric amount init string
         snprintf(healthstr,sizeof(healthstr),"%3d",health);
         // build the bargraph string
         // full bargraph chars
         for (i=4;i<4+healthbars/4;)
            hud_healthstr[i++] = 123;
         // plus one last character with 0,1,2,3 bars
         switch(healthbars%4)
         {
         case 0:
            break;
         case 1:
            hud_healthstr[i++] = 126;
            break;
         case 2:
            hud_healthstr[i++] = 125;
            break;
         case 3:
            hud_healthstr[i++] = 124;
            break;
         }
         // pad string with blank bar characters
         while(i<4+7)
            hud_healthstr[i++] = 127;
         hud_healthstr[i] = '\0';
         strcat(hud_healthstr,healthstr);

         // set the display color from the amount of health posessed
         if (health<health_red)
            w_health.cm = CR_RED;
         else if (health<health_yellow)
            w_health.cm = CR_GOLD;
         else if (health<=health_green)
            w_health.cm = CR_GREEN;
         else
            w_health.cm = CR_BLUE;

         // transfer the init string to the widget
         s = hud_healthstr;
         while (*s)
            HUlib_addCharToTextLine(&w_health, *(s++));
      }
      // display the health widget every frame
      HUlib_drawTextLine(&w_health, false);

      // do the hud armor display
      if (doit)
      {
         int armor = plr->armorpoints;
         int armorbars = armor>100? 25 : armor/4;

         // clear the widgets internal line
         HUlib_clearTextLine(&w_armor);
         // build the numeric amount init string
         snprintf(armorstr,sizeof(armorstr),"%3d",armor);
         // build the bargraph string
         // full bargraph chars
         for (i=4;i<4+armorbars/4;)
            hud_armorstr[i++] = 123;
         // plus one last character with 0,1,2,3 bars
         switch(armorbars%4)
         {
         case 0:
            break;
         case 1:
            hud_armorstr[i++] = 126;
            break;
         case 2:
            hud_armorstr[i++] = 125;
            break;
         case 3:
            hud_armorstr[i++] = 124;
            break;
         }
         // pad string with blank bar characters
         while(i<4+7)
            hud_armorstr[i++] = 127;
         hud_armorstr[i] = '\0';
         strcat(hud_armorstr,armorstr);

         // set the display color from the amount of armor posessed
         if (armor<armor_red)
            w_armor.cm = CR_RED;
         else if (armor<armor_yellow)
            w_armor.cm = CR_GOLD;
         else if (armor<=armor_green)
            w_armor.cm = CR_GREEN;
         else
            w_armor.cm = CR_BLUE;

         // transfer the init string to the widget
         s = hud_armorstr;
         while (*s)
            HUlib_addCharToTextLine(&w_armor, *(s++));
      }
      // display the armor widget every frame
      HUlib_drawTextLine(&w_armor, false);

      // do the hud weapon display
      if (doit)
      {
         int w;
         int ammo,fullammo,ammopct;

         // clear the widgets internal line
         HUlib_clearTextLine(&w_weapon);
         i=4; hud_weapstr[i] = '\0';      //jff 3/7/98 make sure ammo goes away

         // do each weapon that exists in current gamemode
         for (w=0;w<=wp_supershotgun;w++) //jff 3/4/98 show fists too, why not?
         {
            int ok=1;
            //jff avoid executing for weapons that do not exist
            switch (gamemode)
            {
            case shareware:
               if (w>=wp_plasma && w!=wp_chainsaw)
                  ok=0;
               break;
            case retail:
            case registered:
               if (w>=wp_supershotgun)
                  ok=0;
               break;
            default:
            case commercial:
               break;
            }
            if (!ok) continue;

            ammo = plr->ammo[weaponinfo[w].ammo];
            fullammo = plr->maxammo[weaponinfo[w].ammo];
            ammopct=0;

            // skip weapons not currently posessed
            if (!plr->weaponowned[w])
               continue;

            ammopct = fullammo? (100*ammo)/fullammo : 100;

            // display each weapon number in a color related to the ammo for it
            hud_weapstr[i++] = '\x1b'; //jff 3/26/98 use ESC not '\' for paths
            if (weaponinfo[w].ammo==am_noammo) //jff 3/14/98 show berserk on HUD
               hud_weapstr[i++] = plr->powers[pw_strength]? '0'+CR_GREEN : '0'+CR_GRAY;
            else if (ammopct<ammo_red)
               hud_weapstr[i++] = '0'+CR_RED;
            else if (ammopct<ammo_yellow)
               hud_weapstr[i++] = '0'+CR_GOLD;
            else
               hud_weapstr[i++] = '0'+CR_GREEN;
            hud_weapstr[i++] = '0'+w+1;
            hud_weapstr[i++] = ' ';
            hud_weapstr[i] = '\0';
         }

         // transfer the init string to the widget
         s = hud_weapstr;
         while (*s)
            HUlib_addCharToTextLine(&w_weapon, *(s++));
      }
      // display the weapon widget every frame
      HUlib_drawTextLine(&w_weapon, false);

      if (doit && hud_active>1)
      {
         int k;

         hud_keysstr[4] = '\0';    //jff 3/7/98 make sure deleted keys go away
         //jff add case for graphic key display
         if (!deathmatch && hud_graph_keys)
         {
            i=0;
            hud_gkeysstr[i] = '\0'; //jff 3/7/98 init graphic keys widget string
            // build text string whose characters call out graphic keys from fontk
            for (k=0;k<6;k++)
            {
               // skip keys not possessed
               if (!plr->cards[k])
                  continue;

               hud_gkeysstr[i++] = '!'+k;   // key number plus '!' is char for key
               hud_gkeysstr[i++] = ' ';     // spacing
               hud_gkeysstr[i++] = ' ';
            }
            hud_gkeysstr[i]='\0';
         }
         else // not possible in current code, unless deathmatching,
         {
            i=4;
            hud_keysstr[i] = '\0';  //jff 3/7/98 make sure deleted keys go away

            // if deathmatch, build string showing top four frag counts
            if (deathmatch) //jff 3/17/98 show frags, not keys, in deathmatch
            {
               int top1=-999,top2=-999,top3=-999,top4=-999;
               int idx1=-1,idx2=-1,idx3=-1,idx4=-1;
               int fragcount,m;
               char numbuf[32];

               // scan thru players
               for (k=0;k<MAXPLAYERS;k++)
               {
                  // skip players not in game
                  if (!playeringame[k])
                     continue;

                  fragcount = 0;
                  // compute number of times they've fragged each player
                  // minus number of times they've been fragged by them
                  for (m=0;m<MAXPLAYERS;m++)
                  {
                     if (!playeringame[m]) continue;
                     fragcount += (m!=k)?  players[k].frags[m] : -players[k].frags[m];
                  }

                  // very primitive sort of frags to find top four
                  if (fragcount>top1)
                  {
                     top4=top3; top3=top2; top2 = top1; top1=fragcount;
                     idx4=idx3; idx3=idx2; idx2 = idx1; idx1=k;
                  }
                  else if (fragcount>top2)
                  {
                     top4=top3; top3=top2; top2=fragcount;
                     idx4=idx3; idx3=idx2; idx2=k;
                  }
                  else if (fragcount>top3)
                  {
                     top4=top3; top3=fragcount;
                     idx4=idx3; idx3=k;
                  }
                  else if (fragcount>top4)
                  {
                     top4=fragcount;
                     idx4=k;
                  }
               }
               // if the biggest number exists, put it in the init string
               if (idx1>-1)
               {
                  snprintf(numbuf,sizeof(numbuf),"%5d",top1);
                  // make frag count in player's color via escape code
                  hud_keysstr[i++] = '\x1b'; //jff 3/26/98 use ESC not '\' for paths
                  hud_keysstr[i++] = '0'+plyrcoltran[idx1&3];
                  s = numbuf;
                  while (*s)
                     hud_keysstr[i++] = *(s++);
               }
               // if the second biggest number exists, put it in the init string
               if (idx2>-1)
               {
                  snprintf(numbuf,sizeof(numbuf),"%5d",top2);
                  // make frag count in player's color via escape code
                  hud_keysstr[i++] = '\x1b'; //jff 3/26/98 use ESC not '\' for paths
                  hud_keysstr[i++] = '0'+plyrcoltran[idx2&3];
                  s = numbuf;
                  while (*s)
                     hud_keysstr[i++] = *(s++);
               }
               // if the third biggest number exists, put it in the init string
               if (idx3>-1)
               {
                  snprintf(numbuf,sizeof(numbuf),"%5d",top3);
                  // make frag count in player's color via escape code
                  hud_keysstr[i++] = '\x1b'; //jff 3/26/98 use ESC not '\' for paths
                  hud_keysstr[i++] = '0'+plyrcoltran[idx3&3];
                  s = numbuf;
                  while (*s)
                     hud_keysstr[i++] = *(s++);
               }
               // if the fourth biggest number exists, put it in the init string
               if (idx4>-1)
               {
                  snprintf(numbuf,sizeof(numbuf),"%5d",top4);
                  // make frag count in player's color via escape code
                  hud_keysstr[i++] = '\x1b'; //jff 3/26/98 use ESC not '\' for paths
                  hud_keysstr[i++] = '0'+plyrcoltran[idx4&3];
                  s = numbuf;
                  while (*s)
                     hud_keysstr[i++] = *(s++);
               }
               hud_keysstr[i] = '\0';
            } //jff 3/17/98 end of deathmatch clause
            else // build alphabetical key display (not used currently)
            {
               // scan the keys
               for (k=0;k<6;k++)
               {
                  // skip any not possessed by the displayed player's stats
                  if (!plr->cards[k])
                     continue;

                  // use color escapes to make text in key's color
                  hud_keysstr[i++] = '\x1b'; //jff 3/26/98 use ESC not '\' for paths
                  switch(k)
                  {
                  case 0:
                     hud_keysstr[i++] = '0'+CR_BLUE;
                     hud_keysstr[i++] = 'B';
                     hud_keysstr[i++] = 'C';
                     hud_keysstr[i++] = ' ';
                     break;
                  case 1:
                     hud_keysstr[i++] = '0'+CR_GOLD;
                     hud_keysstr[i++] = 'Y';
                     hud_keysstr[i++] = 'C';
                     hud_keysstr[i++] = ' ';
                     break;
                  case 2:
                     hud_keysstr[i++] = '0'+CR_RED;
                     hud_keysstr[i++] = 'R';
                     hud_keysstr[i++] = 'C';
                     hud_keysstr[i++] = ' ';
                     break;
                  case 3:
                     hud_keysstr[i++] = '0'+CR_BLUE;
                     hud_keysstr[i++] = 'B';
                     hud_keysstr[i++] = 'S';
                     hud_keysstr[i++] = ' ';
                     break;
                  case 4:
                     hud_keysstr[i++] = '0'+CR_GOLD;
                     hud_keysstr[i++] = 'Y';
                     hud_keysstr[i++] = 'S';
                     hud_keysstr[i++] = ' ';
                     break;
                  case 5:
                     hud_keysstr[i++] = '0'+CR_RED;
                     hud_keysstr[i++] = 'R';
                     hud_keysstr[i++] = 'S';
                     hud_keysstr[i++] = ' ';
                     break;
                  }
                  hud_keysstr[i]='\0';
               }
            }
         }
      }
      // display the keys/frags line each frame
      if (hud_active>1)
      {
         HUlib_clearTextLine(&w_keys);      // clear the widget strings
         HUlib_clearTextLine(&w_gkeys);

         // transfer the built string (frags or key title) to the widget
         s = hud_keysstr; //jff 3/7/98 display key titles/key text or frags
         while (*s)
            HUlib_addCharToTextLine(&w_keys, *(s++));
         HUlib_drawTextLine(&w_keys, false);

         //jff 3/17/98 show graphic keys in non-DM only
         if (!deathmatch) //jff 3/7/98 display graphic keys
         {
            // transfer the graphic key text to the widget
            s = hud_gkeysstr;
            while (*s)
               HUlib_addCharToTextLine(&w_gkeys, *(s++));
            // display the widget
            HUlib_drawTextLine(&w_gkeys, false);
         }
      }

      // display the hud kills/items/secret display if optioned
      if (!hud_nosecrets)
      {
         if (hud_active>1 && doit)
         {
            // clear the internal widget text buffer
            HUlib_clearTextLine(&w_monsec);
            //jff 3/26/98 use ESC not '\' for paths
            // build the init string with fixed colors
            snprintf
            (
               hud_monsecstr,80*sizeof(char),
               "STS \x1b\x36K \x1b\x33%d \x1b\x36M \x1b\x33%d \x1b\x37I \x1b\x33%d/%d \x1b\x35S \x1b\x33%d/%d",
               plr->killcount,totallive,
               plr->itemcount,totalitems,
               plr->secretcount,totalsecret
            );
            // transfer the init string to the widget
            s = hud_monsecstr;
            while (*s)
               HUlib_addCharToTextLine(&w_monsec, *(s++));
         }
         // display the kills/items/secrets each frame, if optioned
         if (hud_active>1)
            HUlib_drawTextLine(&w_monsec, false);
      }
   }

   //jff 3/4/98 display last to give priority
   HU_Erase(); // jff 4/24/98 Erase current lines before drawing current
   // needed when screen not fullsize

   //jff 4/21/98 if setup has disabled message list while active, turn it off
   if (hud_msg_lines<=1)
      message_list = false;

   // if the message review not enabled, show the standard message widget
   if (!message_list)
      HUlib_drawSText(&w_message);

   // if the message review is enabled show the scrolling message review
   if (hud_msg_lines>1 && message_list)
      HUlib_drawMText(&w_rtext);

   // display the interactive buffer for chat entry
   HUlib_drawIText(&w_chat);
}

//
// HU_Erase()
//
// Erase hud display lines that can be trashed by small screen display
//
// Passed nothing, returns nothing
//
void HU_Erase(void)
{
   // erase the message display or the message review display
   if (!message_list)
      HUlib_eraseSText(&w_message);
   else
      HUlib_eraseMText(&w_rtext);

   // erase the interactive text buffer for chat entry
   HUlib_eraseIText(&w_chat);

   // erase the automap title
   HUlib_eraseTextLine(&w_title);
}

//
// HU_Ticker()
//
// Update the hud displays once per frame
//
// Passed nothing, returns nothing
//
static boolean bsdown; // Is backspace down?
static int bscounter;

void HU_Ticker(void)
{
   int i, rc;
   char c;

   // tick down message counter if message is up
   if (message_counter && !--message_counter)
   {
      message_on = false;
      message_nottobefuckedwith = false;
   }
   if (bsdown && bscounter++ > 9) {
      HUlib_keyInIText(&w_chat, (unsigned char)key_backspace);
      bscounter = 8;
   }

   // if messages on, or "Messages Off" is being displayed
   // this allows the notification of turning messages off to be seen
   if (showMessages || message_dontfuckwithme)
   {
      // display message if necessary
      if ((plr->message && !message_nottobefuckedwith)
            || (plr->message && message_dontfuckwithme))
      {
         //post the message to the message widget
         HUlib_addMessageToSText(&w_message, 0, plr->message);
         //jff 2/26/98 add message to refresh text widget too
         HUlib_addMessageToMText(&w_rtext, 0, plr->message);

         // clear the message to avoid posting multiple times
         plr->message = 0;
         // note a message is displayed
         message_on = true;
         // start the message persistence counter
         message_counter = HU_MSGTIMEOUT;
         // transfer "Messages Off" exception to the "being displayed" variable
         message_nottobefuckedwith = message_dontfuckwithme;
         // clear the flag that "Messages Off" is being posted
         message_dontfuckwithme = 0;
      }
   }

   // check for incoming chat characters
   if (netgame)
   {
      for (i=0; i<MAXPLAYERS; i++)
      {
         if (!playeringame[i])
            continue;
         if (i != consoleplayer
               && (c = players[i].cmd.chatchar))
         {
            if (c <= HU_BROADCAST)
               chat_dest[i] = c;
            else
            {
               if (c >= 'a' && c <= 'z')
                  c = (char) shiftxform[(unsigned char) c];
               rc = HUlib_keyInIText(&w_inputbuffer[i], c);
               if (rc && c == KEY_ENTER)
               {
                  if (w_inputbuffer[i].l.len
                        && (chat_dest[i] == consoleplayer+1
                            || chat_dest[i] == HU_BROADCAST))
                  {
                     HUlib_addMessageToSText(&w_message,
                                             player_names[i],
                                             w_inputbuffer[i].l.l);

                     message_nottobefuckedwith = true;
                     message_on = true;
                     message_counter = HU_MSGTIMEOUT;
                     if ( gamemode == commercial )
                        S_StartSound(0, sfx_radio);
                     else
                        S_StartSound(0, sfx_tink);
                  }
                  HUlib_resetIText(&w_inputbuffer[i]);
               }
            }
            players[i].cmd.chatchar = 0;
         }
      }
   }
}

#define QUEUESIZE   128

static char chatchars[QUEUESIZE];
static int  head = 0;
static int  tail = 0;

//
// HU_queueChatChar()
//
// Add an incoming character to the circular chat queue
//
// Passed the character to queue, returns nothing
//
void HU_queueChatChar(char c)
{
   if (((head + 1) & (QUEUESIZE-1)) == tail)
   {
      plr->message = HUSTR_MSGU;
   }
   else
   {
      chatchars[head] = c;
      head = (head + 1) & (QUEUESIZE-1);
   }
}

//
// HU_dequeueChatChar()
//
// Remove the earliest added character from the circular chat queue
//
// Passed nothing, returns the character dequeued
//
char HU_dequeueChatChar(void)
{
   char c;

   if (head != tail)
   {
      c = chatchars[tail];
      tail = (tail + 1) & (QUEUESIZE-1);
   }
   else
   {
      c = 0;
   }
   return c;
}

//
// HU_Responder()
//
// Responds to input events that affect the heads up displays
//
// Passed the event to respond to, returns true if the event was handled
//
boolean HU_Responder(event_t *ev)
{

   static char   lastmessage[HU_MAXLINELENGTH+1];
   const char*   macromessage; // CPhipps - const char*
   boolean   eatkey = false;
   static boolean  shiftdown = false;
   static boolean  altdown = false;
   unsigned char   c;
   int     i;
   int     numplayers;

   static int    num_nobrainers = 0;

   numplayers = 0;
   for (i=0 ; i<MAXPLAYERS ; i++)
      numplayers += playeringame[i];

   if (ev->data1 == key_shift)
   {
      shiftdown = ev->type == ev_keydown;
      return false;
   }
   else if (ev->data1 == key_alt)
   {
      altdown = ev->type == ev_keydown;
      return false;
   }
   else if (ev->data1 == key_backspace)
   {
      bsdown = ev->type == ev_keydown;
      bscounter = 0;
   }

   if (ev->type != ev_keydown)
      return false;

   if (!chat_on)
   {
      if (ev->data1 == key_enter)                                 // phares
      {
#ifndef INSTRUMENTED  // never turn on message review if INSTRUMENTED defined
         if (hud_msg_lines>1)  // it posts multi-line messages that will trash
         {
            if (message_list) HU_Erase(); //jff 4/28/98 erase behind messages
            message_list = !message_list; //jff 2/26/98 toggle list of messages
         }
#endif
         if (!message_list)              // if not message list, refresh message
         {
            message_on = true;
            message_counter = HU_MSGTIMEOUT;
         }
         eatkey = true;
      }//jff 2/26/98 no chat if message review is displayed
      else if (!message_list && netgame && ev->data1 == key_chat)
      {
         eatkey = chat_on = true;
         HUlib_resetIText(&w_chat);
         HU_queueChatChar(HU_BROADCAST);
      }//jff 2/26/98  no chat if message review is displayed
      // killough 10/02/98: no chat if demo playback
      else if (!demoplayback && !message_list && netgame && numplayers > 2)
      {
         for (i=0; i<MAXPLAYERS ; i++)
         {
            if (ev->data1 == destination_keys[i])
            {
               if (playeringame[i] && i!=consoleplayer)
               {
                  eatkey = chat_on = true;
                  HUlib_resetIText(&w_chat);
                  HU_queueChatChar((char)(i+1));
                  break;
               }
               else if (i == consoleplayer)
               {
                  num_nobrainers++;
                  if (num_nobrainers < 3)
                     plr->message = HUSTR_TALKTOSELF1;
                  else if (num_nobrainers < 6)
                     plr->message = HUSTR_TALKTOSELF2;
                  else if (num_nobrainers < 9)
                     plr->message = HUSTR_TALKTOSELF3;
                  else if (num_nobrainers < 32)
                     plr->message = HUSTR_TALKTOSELF4;
                  else
                     plr->message = HUSTR_TALKTOSELF5;
               }
            }
         }
      }
   }//jff 2/26/98 no chat functions if message review is displayed
   else if (!message_list)
   {
      c = ev->data1;
      // send a macro
      if (altdown)
      {
         c = c - '0';
         if (c > 9)
            return false;
         macromessage = chat_macros[c];

         // kill last message with a '\n'
         HU_queueChatChar((char)key_enter); // DEBUG!!!                // phares

         // send the macro message
         while (*macromessage)
            HU_queueChatChar(*macromessage++);
         HU_queueChatChar((char)key_enter);                            // phares

         // leave chat mode and notify that it was sent
         chat_on = false;
         strcpy(lastmessage, chat_macros[c]);
         plr->message = lastmessage;
         eatkey = true;
      }
      else
      {
         if (shiftdown || (c >= 'a' && c <= 'z'))
            c = shiftxform[c];
         eatkey = HUlib_keyInIText(&w_chat, c);
         if (eatkey)
            HU_queueChatChar(c);

         if (c == key_enter)                                     // phares
         {
            chat_on = false;
            if (w_chat.l.len)
            {
               strcpy(lastmessage, w_chat.l.l);
               plr->message = lastmessage;
            }
         }
         else if (c == key_escape)                               // phares
            chat_on = false;
      }
   }
   return eatkey;
}


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