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//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005-2014 Simon Howard
//
// 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:
// System specific interface stuff.
//
#ifndef __R_MAIN__
#define __R_MAIN__
#include "d_player.h"
#include "r_data.h"
//
// POV related.
//
extern fixed_t viewcos;
extern fixed_t viewsin;
extern int viewwindowx;
extern int viewwindowy;
extern int centerx;
extern int centery;
extern fixed_t centerxfrac;
extern fixed_t centeryfrac;
extern fixed_t projection;
extern int validcount;
extern int linecount;
extern int loopcount;
//
// Lighting LUT.
// Used for z-depth cuing per column/row,
// and other lighting effects (sector ambient, flash).
//
// Lighting constants.
// Now why not 32 levels here?
#define LIGHTLEVELS 16
#define LIGHTSEGSHIFT 4
#define MAXLIGHTSCALE 48
#define LIGHTSCALESHIFT 12
#define MAXLIGHTZ 128
#define LIGHTZSHIFT 20
extern lighttable_t* scalelight[LIGHTLEVELS][MAXLIGHTSCALE];
extern lighttable_t* scalelightfixed[MAXLIGHTSCALE];
extern lighttable_t* zlight[LIGHTLEVELS][MAXLIGHTZ];
extern int extralight;
extern lighttable_t* fixedcolormap;
// Number of diminishing brightness levels.
// There a 0-31, i.e. 32 LUT in the COLORMAP lump.
#define NUMCOLORMAPS 32
// Blocky/low detail mode.
//B remove this?
// 0 = high, 1 = low
extern int detailshift;
//
// Function pointers to switch refresh/drawing functions.
// Used to select shadow mode etc.
//
extern void (*colfunc) (void);
extern void (*transcolfunc) (void);
extern void (*basecolfunc) (void);
extern void (*fuzzcolfunc) (void);
// No shadow effects on floors.
extern void (*spanfunc) (void);
//
// Utility functions.
int
R_PointOnSide
( fixed_t x,
fixed_t y,
node_t* node );
int
R_PointOnSegSide
( fixed_t x,
fixed_t y,
seg_t* line );
angle_t
R_PointToAngle
( fixed_t x,
fixed_t y );
angle_t
R_PointToAngle2
( fixed_t x1,
fixed_t y1,
fixed_t x2,
fixed_t y2 );
fixed_t
R_PointToDist
( fixed_t x,
fixed_t y );
fixed_t R_ScaleFromGlobalAngle (angle_t visangle);
subsector_t*
R_PointInSubsector
( fixed_t x,
fixed_t y );
void
R_AddPointToBox
( int x,
int y,
fixed_t* box );
//
// REFRESH - the actual rendering functions.
//
// Called by G_Drawer.
void R_RenderPlayerView (player_t *player);
// Called by startup code.
void R_Init (void);
// Called by M_Responder.
void R_SetViewSize (int blocks, int detail);
#endif
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