hw_light.c

The source code of Doom legacy for windows

// Emacs style mode select   -*- C++ -*- 
//-----------------------------------------------------------------------------
//
// $Id: hw_light.c,v 1.34 2001/04/28 15:18:46 hurdler Exp $
//
// Copyright (C) 1998-2000 by DooM Legacy Team.
//
// 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.
//
//
// $Log: hw_light.c,v $
// Revision 1.34  2001/04/28 15:18:46  hurdler
// newcoronas defined again
//
// Revision 1.33  2001/04/17 22:30:40  hurdler
// fix some (strange!) problems
//
// Revision 1.32  2001/04/09 14:17:45  hurdler
// no message
//
// Revision 1.31  2001/02/28 17:50:56  bpereira
// no message
//
// Revision 1.30  2001/02/24 13:35:22  bpereira
// no message
//
// Revision 1.29  2001/01/25 18:56:27  bpereira
// no message
//
// Revision 1.28  2000/11/18 15:51:25  bpereira
// no message
//
// Revision 1.27  2000/11/02 19:49:39  bpereira
// no message
//
// Revision 1.26  2000/10/04 16:21:57  hurdler
// small clean-up
//
// Revision 1.25  2000/09/28 20:57:20  bpereira
// no message
//
// Revision 1.24  2000/09/21 16:45:11  bpereira
// no message
//
// Revision 1.23  2000/08/31 14:30:57  bpereira
// no message
//
// Revision 1.22  2000/08/11 19:11:57  metzgermeister
// *** empty log message ***
//
// Revision 1.21  2000/08/11 12:27:43  hurdler
// latest changes for v1.30
//
// Revision 1.20  2000/08/10 19:58:04  bpereira
// no message
//
// Revision 1.19  2000/08/10 14:16:25  hurdler
// no message
//
// Revision 1.18  2000/08/03 17:57:42  bpereira
// no message
//
// Revision 1.17  2000/07/01 09:23:50  bpereira
// no message
//
// Revision 1.16  2000/05/09 21:09:18  hurdler
// people prefer coronas on plasma riffles
//
// Revision 1.15  2000/04/24 20:24:38  bpereira
// no message
//
// Revision 1.14  2000/04/24 15:46:34  hurdler
// Support colormap for text
//
// Revision 1.13  2000/04/23 16:19:52  bpereira
// no message
//
// Revision 1.12  2000/04/18 12:52:21  hurdler
// join with Boris' code
//
// Revision 1.10  2000/04/14 16:34:26  hurdler
// some nice changes for coronas
//
// Revision 1.9  2000/04/12 16:03:51  hurdler
// ready for T&L code and true static lighting
//
// Revision 1.8  2000/04/11 01:00:59  hurdler
// Better coronas support
//
// Revision 1.7  2000/04/09 17:18:01  hurdler
// modified coronas' code for 16 bits video mode
//
// Revision 1.6  2000/04/06 20:50:23  hurdler
// add Boris' changes for coronas in doom3.wad
//
// Revision 1.5  2000/03/29 19:39:49  bpereira
// no message
//
// Revision 1.4  2000/03/07 03:31:45  hurdler
// fix linux compilation
//
// Revision 1.3  2000/03/05 17:10:56  bpereira
// no message
//
// Revision 1.2  2000/02/27 00:42:11  hurdler
// fix CR+LF problem
//
// Revision 1.1.1.1  2000/02/22 20:32:33  hurdler
// Initial import into CVS (v1.29 pr3)
//
//
// DESCRIPTION:
//      Dynamic/Static lighting & coronas add on by Hurdler
//      !!! Under construction !!!
//
//-----------------------------------------------------------------------------


#include "hw_light.h"
#include "../i_video.h"
#include "../z_zone.h"
#include "../m_random.h"
#include "../m_bbox.h"
#include "../w_wad.h"
#ifdef TANDL
#include "../r_state.h"
#include "../r_main.h"
#include "../p_local.h"
#endif

//=============================================================================
//                                                                      DEFINES
//=============================================================================

#define DL_SQRRADIUS(x)     dynlights->p_lspr[(x)]->dynamic_sqrradius
#define DL_RADIUS(x)        dynlights->p_lspr[(x)]->dynamic_radius
#define LIGHT_POS(i)        dynlights->position[(i)]

#define DL_HIGH_QUALITY
#define BACKFACECULL
//#define LIGHTMAPFLAGS  (PF_Masked|PF_Clip|PF_NoAlphaTest)  // debug see overdraw
#define LIGHTMAPFLAGS (PF_Modulated|PF_Additive|PF_Clip)

//=============================================================================
//                                                                       GLOBAL
//=============================================================================


void CV_grMonsterDL_OnChange (void);

consvar_t cv_grdynamiclighting = {"gr_dynamiclighting",  "On", CV_SAVE, CV_OnOff };
consvar_t cv_grstaticlighting  = {"gr_staticlighting",   "On", CV_SAVE, CV_OnOff };
consvar_t cv_grcoronas         = {"gr_coronas",          "On", CV_SAVE, CV_OnOff };
consvar_t cv_grcoronasize      = {"gr_coronasize",        "1", CV_SAVE| CV_FLOAT,0 };
consvar_t cv_grmblighting      = {"gr_mblighting",       "On", CV_SAVE|CV_CALL
                                  , CV_OnOff, CV_grMonsterDL_OnChange };

static dynlights_t view_dynlights[2]; // 2 players in splitscreen mode
static dynlights_t *dynlights = &view_dynlights[0];

typedef enum {
    NOLIGHT = 0,
    PLASMA_L,
    PLASMAEXP_L,
    ROCKET_L,
    ROCKETEXP_L,
    BFG_L,
    BFGEXP_L,
    BLUETALL_L,
    GREENTALL_L,
    REDTALL_L,
    BLUESMALL_L,
    GREENSMALL_L,
    REDSMALL_L,
    TECHLAMP_L,
    TECHLAMP2_L,
    COLUMN_L,
    CANDLE_L,
    CANDLEABRE_L,
    REDBALL_L,
    GREENBALL_L,
    ROCKET2_L,
    NUMLIGHTS
} lightspritenum_t;

#define UNDEFINED_SPR   0x0 // actually just for testing
#define CORONA_SPR      0x1 // a light source which only emit a corona
#define DYNLIGHT_SPR    0x2 // a light source which is only used for dynamic lighting
#define LIGHT_SPR       (DYNLIGHT_SPR|CORONA_SPR)
#define ROCKET_SPR      (DYNLIGHT_SPR|CORONA_SPR|0x10)
//#define MONSTER_SPR     4
//#define AMMO_SPR        8
//#define BONUS_SPR      16

static light_t lspr[NUMLIGHTS] = {
    // type       offset x,   y  coronas color, c_size,light color,l_radius, sqr radius computed at init
   // UNDEFINED: 0  
    { UNDEFINED_SPR,  0.0f,   0.0f,        0x0,  24.0f,        0x0,   0.0f },
    // weapons
    // PLASMA_L
    { DYNLIGHT_SPR,   0.0f,   0.0f, 0x60ff7750,  24.0f, 0x20f77760,  80.0f },
    // PLASMAEXP_L
    { DYNLIGHT_SPR,   0.0f,   0.0f, 0x60ff7750,  24.0f, 0x40f77760, 120.0f },
    // ROCKET_L
    {   ROCKET_SPR,   0.0f,   0.0f, 0x606060f0,  20.0f, 0x4020f7f7, 120.0f },
    // ROCKETEXP_L
    { DYNLIGHT_SPR,   0.0f,   0.0f, 0x606060f0,  20.0f, 0x6020f7f7, 200.0f },
    // BFG_L
    { DYNLIGHT_SPR,   0.0f,   0.0f, 0x6077f777, 120.0f, 0x8060f060, 200.0f },
    // BFGEXP_L
    { DYNLIGHT_SPR,   0.0f,   0.0f, 0x6077f777, 120.0f, 0x6060f060, 400.0f },

    // tall lights
    // BLUETALL_L
    {    LIGHT_SPR,   0.0f,  20.0f, 0x80ff7070,  75.0f, 0x40ff5050, 100.0f },
    // GREENTALL_L
    {    LIGHT_SPR,   0.0f,  20.0f, 0x5060ff60,  75.0f, 0x4070ff70, 100.0f },
    // REDTALL_L
    {    LIGHT_SPR,   0.0f,  20.0f, 0x705070ff,  75.0f, 0x405070ff, 100.0f },

    // small lights
    // BLUESMALL_L
    {    LIGHT_SPR,   0.0f,   4.0f, 0x80ff7070,  60.0f, 0x40ff5050, 100.0f },
    // GREENSMALL_L
    {    LIGHT_SPR,   0.0f,   4.0f, 0x6070ff70,  60.0f, 0x4070ff70, 100.0f },
    // REDSMALL_L
    {    LIGHT_SPR,   0.0f,   4.0f, 0x705070ff,  60.0f, 0x405070ff, 100.0f },

    // other lights
    // TECHLAMP_L
    {    LIGHT_SPR,   0.0f,  44.0f, 0x80ffb0b0,  75.0f, 0x40ffb0b0, 100.0f },
    // TECHLAMP2_L
    {    LIGHT_SPR,   0.0f,  36.0f, 0x80ffb0b0,  60.0f, 0x40ffb0b0, 100.0f },
    // COLUMN_L
    {    LIGHT_SPR,   3.0f,  30.0f, 0x80b0f0f0,  60.0f, 0x40b0f0f0, 100.0f },
    // CANDLE_L
    {    LIGHT_SPR,   0.0f,  11.0f, 0x60b0f0f0,  20.0f, 0x30b0f0f0,  30.0f },
    // CANDLEABRE_L
    {    LIGHT_SPR,   0.0f,  30.0f, 0x60b0f0f0,  60.0f, 0x30b0f0f0, 100.0f },
    
    // monsters
    // REDBALL_L
    { DYNLIGHT_SPR,   0.0f,   0.0f, 0x606060f0,   0.0f, 0x302070ff, 100.0f },
    // GREENBALL_L
    { DYNLIGHT_SPR,   0.0f,   0.0f, 0x6077f777, 120.0f, 0x3060f060, 100.0f },
    // ROCKET2_L
    { DYNLIGHT_SPR,   0.0f,   0.0f, 0x606060f0,  20.0f, 0x4020f7f7, 120.0f },
};


static light_t *t_lspr[NUMSPRITES] = {
    &lspr[NOLIGHT],     // SPR_TROO
    &lspr[NOLIGHT],     // SPR_SHTG
    &lspr[NOLIGHT],     // SPR_PUNG
    &lspr[NOLIGHT],     // SPR_PISG
    &lspr[NOLIGHT],     // SPR_PISF
    &lspr[NOLIGHT],     // SPR_SHTF
    &lspr[NOLIGHT],     // SPR_SHT2
    &lspr[NOLIGHT],     // SPR_CHGG
    &lspr[NOLIGHT],     // SPR_CHGF
    &lspr[NOLIGHT],     // SPR_MISG
    &lspr[NOLIGHT],     // SPR_MISF
    &lspr[NOLIGHT],     // SPR_SAWG
    &lspr[NOLIGHT],     // SPR_PLSG
    &lspr[NOLIGHT],     // SPR_PLSF
    &lspr[NOLIGHT],     // SPR_BFGG
    &lspr[NOLIGHT],     // SPR_BFGF
    &lspr[NOLIGHT],     // SPR_BLUD
    &lspr[NOLIGHT],     // SPR_PUFF
    &lspr[REDBALL_L],   // SPR_BAL1 * // imp
    &lspr[REDBALL_L],   // SPR_BAL2 * // cacodemon
    &lspr[PLASMA_L],    // SPR_PLSS * // plasma
    &lspr[PLASMAEXP_L], // SPR_PLSE * // plasma explosion
    &lspr[ROCKET_L],    // SPR_MISL * // rocket
    &lspr[BFG_L],       // SPR_BFS1 * // bfg
    &lspr[BFGEXP_L],    // SPR_BFE1 * // bfg explosion
    &lspr[NOLIGHT],     // SPR_BFE2
    &lspr[GREENBALL_L], // SPR_TFOG * teleport fog
    &lspr[PLASMA_L],    // SPR_IFOG * respaw fog
    &lspr[NOLIGHT],     // SPR_PLAY
    &lspr[NOLIGHT],     // SPR_POSS
    &lspr[NOLIGHT],     // SPR_SPOS
    &lspr[NOLIGHT],     // SPR_VILE
    &lspr[NOLIGHT],     // SPR_FIRE
    &lspr[REDBALL_L],   // SPR_FATB * // revenent tracer