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// .oOO8OOOOOOOOOOOOOOOCc
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// .oCOOOOOCc. http://remood.org/
// ----------------------------------------------------------------------------
// Copyright (C) 1993-1996 by id Software, Inc.
// Copyright (C) 1998-2000 by DooM Legacy Team.
// Copyright (C) 2008-2013 GhostlyDeath <ghostlydeath@remood.org>
// <ghostlydeath@gmail.com>
// ----------------------------------------------------------------------------
// 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.
// ----------------------------------------------------------------------------
// DESCRIPTION: System specific interface stuff.
#ifndef __R_MAIN__
#define __R_MAIN__
#include "r_data.h"
//
// POV related.
//
extern fixed_t viewcos;
extern fixed_t viewsin;
extern int viewwidth;
extern int viewheight;
extern int viewwindowx;
extern int viewwindowy;
extern int centerx;
extern int centery;
extern int centerypsp;
extern fixed_t centerxfrac;
extern fixed_t centeryfrac;
extern fixed_t projection;
extern fixed_t projectiony; //added:02-02-98:aspect ratio test...
extern int validcount;
extern int linecount;
extern int loopcount;
extern int framecount;
//
// 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;
//
// 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 x2, fixed_t y2, fixed_t x1, fixed_t y1);
fixed_t R_PointToDist(fixed_t x, fixed_t y);
//SoM: 3/27/2000
fixed_t R_PointToDist2(fixed_t x2, fixed_t y2, fixed_t x1, fixed_t y1);
fixed_t R_ScaleFromGlobalAngle(angle_t visangle);
subsector_t* R_PointInSubsector(fixed_t x, fixed_t y);
subsector_t* R_IsPointInSubsector(fixed_t x, fixed_t y);
void R_AddPointToBox(int x, int y, fixed_t* box);
//
// REFRESH - the actual rendering functions.
//
// Called by startup code.
void R_Init(void);
// just sets setsizeneeded true
extern bool_t setsizeneeded;
void R_SetViewSize(void);
// add commands related to engine, at game startup
void R_RegisterEngineStuff(void);
/*** DOOM RENDERER ***/
void R_ExecuteSetViewSize_DOOM(void);
void R_RenderPlayerView_DOOM(player_t* player, const size_t a_Screen);
/*** GENERIC CALLS ***/
extern void (*R_ExecuteSetViewSize)(void);
extern void (*R_RenderPlayerView)(player_t* player, const size_t a_Screen);
#endif