/*

Copyright (C) 2015-2018 Night Dive Studios, LLC.

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 3 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, see <http://www.gnu.org/licenses/>.

*/
/*
 * $Source: r:/prj/cit/src/inc/RCS/frparams.h $
 * $Revision: 1.3 $
 * $Author: dc $
 * $Date: 1994/07/20 23:05:51 $
 *
 * Citadel Renderer
 *  global parameters structures, setting, and defines
 *
 * $Log: frparams.h $
 * Revision 1.3  1994/07/20  23:05:51  dc
 * odrop
 *
 * Revision 1.2  1994/01/30  01:54:53  dc
 * global lighting
 *
 * Revision 1.1  1994/01/02  17:16:32  dc
 * Initial revision
 *
 */

#include "frctxt.h"

#define TM_SIZE_CNT 3 /* # of different tmap sizes */

typedef struct {
    struct {
        uchar main : 1;       /* any textures? */
        uchar wall : 1;       /*  if any, any walls */
        uchar floor : 1;      /*          any floor */
        uchar ceiling : 1;    /*          any ceiling */
        uchar cyber : 1;      /* cyberspace instead */
        uchar cyber_full : 1; /* full cursors */
    } faces;
    struct {
        uchar highlights : 1; /* tilemap highlights of cones */
        uchar tilecursor : 1; /* show the tilemap cursor in 3d */
        uchar nodraw : 1;     /* dont actually render FB */
    } features;
    struct {
#ifdef C_WERE_SUPER_COOL
        uchar lighting : 1;   /* any lighting at all? */
        uchar terrain : 1;    /* terrain light values checked and used? */
        uchar camera : 1;     /* camera light values used */
        uchar normal_chk : 1; /* use normal when computing wall lighting */
#else
        uchar flags; /* 0,0,0,0,any,terr,cam,normal */
#endif
        int normal_shf;   /* what to shift normal by when adding to dist */
        uchar rad[2];     /* inner, outer lighting radius */
        uchar base[2];    /* inner, outer light values */
        fix slope;        /* slope and yintercept */
        fix yint;         /*  of lighting line */
        short global_mod; /* change to all lighting */
    } lighting;
    struct {
        uchar qscale_obj;             /* radius at which to qscale objects */
        uchar qscale_crit;            /* radius at which to qscale critters */
        uchar qscale_texture;         /* radius at which to qscale textures */
        uchar detail;                 /* detail setting */
        uchar clear_color;            /* color to clear background too */
        uchar drop_rad[TM_SIZE_CNT];  /* radii to switch to lower res tmaps */
        uchar odrop_rad[TM_SIZE_CNT]; /* original (base) drop radii to switch to lower res tmaps */
        uchar radius;                 /* maximal view radius */
        uchar show_all : 1;           /* render whole world - no clip */
        uchar cone_only : 1;          /* no 2 1/2D clip, cone only */
    } view;
    struct {
        long last_chk_time;
        long last_frame_cnt;
        long tot_frame_cnt;
        long last_frame_len;
    } time;
} fauxrend_parameters;

#ifndef __FRSETUP_SRC
extern fauxrend_parameters _frp;
#define get_frp() (_frp)
#endif

#define LIGHT_BITS_MASK 0xfu
#define LIGHT_BITS_ANY 0x8u
#define LIGHT_BITS_TERR 0x4u
#define LIGHT_BITS_CAM 0x2u
#define LIGHT_BITS_NORM 0x1u
#define LIGHT_BITS_HOW (LIGHT_BITS_NORM | LIGHT_BITS_CAM | LIGHT_BITS_TERR)

#define _frp_light_bits_any() (_frp.lighting.flags & LIGHT_BITS_ANY)
#define _frp_light_bits_how() (_frp.lighting.flags & LIGHT_BITS_HOW)
#define _frp_light_bits_cam() (_frp.lighting.flags & LIGHT_BITS_CAM)
#define _frp_light_bits_norm() (_frp.lighting.flags & LIGHT_BITS_NORM)
#define _frp_light_bits_terr() (_frp.lighting.flags & LIGHT_BITS_TERR)

#define _frp_light_bits_set(m) (_frp.lighting.flags |= m)
#define _frp_light_bits_clear(m) (_frp.lighting.flags &= ~m)
#define _frp_light_bits_tog(m)   \
    if (_frp.lighting.flags | m) \
    _frp_light_bits_clear(m) else _frp_light_bits_set(m)