Move doom-specific files to a separate directory.

Subversion-branch: /branches/raven-branch
Subversion-revision: 1201

1 files changed, 0 insertions, 910 deletions

diff --git a/src/r_main.c b/src/r_main.c
deleted file mode 100644
index e6a08691..00000000
--- a/src/r_main.c
+++ /dev/null
@@ -1,910 +0,0 @@
-// Emacs style mode select   -*- C++ -*- 
-//-----------------------------------------------------------------------------
-//
-// Copyright(C) 1993-1996 Id Software, Inc.
-// Copyright(C) 2005 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.
-//
-// 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:
-//	Rendering main loop and setup functions,
-//	 utility functions (BSP, geometry, trigonometry).
-//	See tables.c, too.
-//
-//-----------------------------------------------------------------------------
-
-
-
-
-
-#include <stdlib.h>
-#include <math.h>
-
-
-#include "doomdef.h"
-#include "d_net.h"
-
-#include "m_bbox.h"
-#include "m_menu.h"
-
-#include "r_local.h"
-#include "r_sky.h"
-
-
-
-
-
-// Fineangles in the SCREENWIDTH wide window.
-#define FIELDOFVIEW		2048	
-
-
-
-int			viewangleoffset;
-
-// increment every time a check is made
-int			validcount = 1;		
-
-
-lighttable_t*		fixedcolormap;
-extern lighttable_t**	walllights;
-
-int			centerx;
-int			centery;
-
-fixed_t			centerxfrac;
-fixed_t			centeryfrac;
-fixed_t			projection;
-
-// just for profiling purposes
-int			framecount;	
-
-int			sscount;
-int			linecount;
-int			loopcount;
-
-fixed_t			viewx;
-fixed_t			viewy;
-fixed_t			viewz;
-
-angle_t			viewangle;
-
-fixed_t			viewcos;
-fixed_t			viewsin;
-
-player_t*		viewplayer;
-
-// 0 = high, 1 = low
-int			detailshift;	
-
-//
-// precalculated math tables
-//
-angle_t			clipangle;
-
-// The viewangletox[viewangle + FINEANGLES/4] lookup
-// maps the visible view angles to screen X coordinates,
-// flattening the arc to a flat projection plane.
-// There will be many angles mapped to the same X. 
-int			viewangletox[FINEANGLES/2];
-
-// The xtoviewangleangle[] table maps a screen pixel
-// to the lowest viewangle that maps back to x ranges
-// from clipangle to -clipangle.
-angle_t			xtoviewangle[SCREENWIDTH+1];
-
-
-// UNUSED.
-// The finetangentgent[angle+FINEANGLES/4] table
-// holds the fixed_t tangent values for view angles,
-// ranging from INT_MIN to 0 to INT_MAX.
-// fixed_t		finetangent[FINEANGLES/2];
-
-// fixed_t		finesine[5*FINEANGLES/4];
-const fixed_t*		finecosine = &finesine[FINEANGLES/4];
-
-
-lighttable_t*		scalelight[LIGHTLEVELS][MAXLIGHTSCALE];
-lighttable_t*		scalelightfixed[MAXLIGHTSCALE];
-lighttable_t*		zlight[LIGHTLEVELS][MAXLIGHTZ];
-
-// bumped light from gun blasts
-int			extralight;			
-
-
-
-void (*colfunc) (void);
-void (*basecolfunc) (void);
-void (*fuzzcolfunc) (void);
-void (*transcolfunc) (void);
-void (*spanfunc) (void);
-
-
-
-//
-// R_AddPointToBox
-// Expand a given bbox
-// so that it encloses a given point.
-//
-void
-R_AddPointToBox
-( int		x,
-  int		y,
-  fixed_t*	box )
-{
-    if (x< box[BOXLEFT])
-	box[BOXLEFT] = x;
-    if (x> box[BOXRIGHT])
-	box[BOXRIGHT] = x;
-    if (y< box[BOXBOTTOM])
-	box[BOXBOTTOM] = y;
-    if (y> box[BOXTOP])
-	box[BOXTOP] = y;
-}
-
-
-//
-// R_PointOnSide
-// Traverse BSP (sub) tree,
-//  check point against partition plane.
-// Returns side 0 (front) or 1 (back).
-//
-int
-R_PointOnSide
-( fixed_t	x,
-  fixed_t	y,
-  node_t*	node )
-{
-    fixed_t	dx;
-    fixed_t	dy;
-    fixed_t	left;
-    fixed_t	right;
-	
-    if (!node->dx)
-    {
-	if (x <= node->x)
-	    return node->dy > 0;
-	
-	return node->dy < 0;
-    }
-    if (!node->dy)
-    {
-	if (y <= node->y)
-	    return node->dx < 0;
-	
-	return node->dx > 0;
-    }
-	
-    dx = (x - node->x);
-    dy = (y - node->y);
-	
-    // Try to quickly decide by looking at sign bits.
-    if ( (node->dy ^ node->dx ^ dx ^ dy)&0x80000000 )
-    {
-	if  ( (node->dy ^ dx) & 0x80000000 )
-	{
-	    // (left is negative)
-	    return 1;
-	}
-	return 0;
-    }
-
-    left = FixedMul ( node->dy>>FRACBITS , dx );
-    right = FixedMul ( dy , node->dx>>FRACBITS );
-	
-    if (right < left)
-    {
-	// front side
-	return 0;
-    }
-    // back side
-    return 1;			
-}
-
-
-int
-R_PointOnSegSide
-( fixed_t	x,
-  fixed_t	y,
-  seg_t*	line )
-{
-    fixed_t	lx;
-    fixed_t	ly;
-    fixed_t	ldx;
-    fixed_t	ldy;
-    fixed_t	dx;
-    fixed_t	dy;
-    fixed_t	left;
-    fixed_t	right;
-	
-    lx = line->v1->x;
-    ly = line->v1->y;
-	
-    ldx = line->v2->x - lx;
-    ldy = line->v2->y - ly;
-	
-    if (!ldx)
-    {
-	if (x <= lx)
-	    return ldy > 0;
-	
-	return ldy < 0;
-    }
-    if (!ldy)
-    {
-	if (y <= ly)
-	    return ldx < 0;
-	
-	return ldx > 0;
-    }
-	
-    dx = (x - lx);
-    dy = (y - ly);
-	
-    // Try to quickly decide by looking at sign bits.
-    if ( (ldy ^ ldx ^ dx ^ dy)&0x80000000 )
-    {
-	if  ( (ldy ^ dx) & 0x80000000 )
-	{
-	    // (left is negative)
-	    return 1;
-	}
-	return 0;
-    }
-
-    left = FixedMul ( ldy>>FRACBITS , dx );
-    right = FixedMul ( dy , ldx>>FRACBITS );
-	
-    if (right < left)
-    {
-	// front side
-	return 0;
-    }
-    // back side
-    return 1;			
-}
-
-
-//
-// R_PointToAngle
-// To get a global angle from cartesian coordinates,
-//  the coordinates are flipped until they are in
-//  the first octant of the coordinate system, then
-//  the y (<=x) is scaled and divided by x to get a
-//  tangent (slope) value which is looked up in the
-//  tantoangle[] table.
-
-//
-
-
-
-
-angle_t
-R_PointToAngle
-( fixed_t	x,
-  fixed_t	y )
-{	
-    x -= viewx;
-    y -= viewy;
-    
-    if ( (!x) && (!y) )
-	return 0;
-
-    if (x>= 0)
-    {
-	// x >=0
-	if (y>= 0)
-	{
-	    // y>= 0
-
-	    if (x>y)
-	    {
-		// octant 0
-		return tantoangle[ SlopeDiv(y,x)];
-	    }
-	    else
-	    {
-		// octant 1
-		return ANG90-1-tantoangle[ SlopeDiv(x,y)];
-	    }
-	}
-	else
-	{
-	    // y<0
-	    y = -y;
-
-	    if (x>y)
-	    {
-		// octant 8
-		return -tantoangle[SlopeDiv(y,x)];
-	    }
-	    else
-	    {
-		// octant 7
-		return ANG270+tantoangle[ SlopeDiv(x,y)];
-	    }
-	}
-    }
-    else
-    {
-	// x<0
-	x = -x;
-
-	if (y>= 0)
-	{
-	    // y>= 0
-	    if (x>y)
-	    {
-		// octant 3
-		return ANG180-1-tantoangle[ SlopeDiv(y,x)];
-	    }
-	    else
-	    {
-		// octant 2
-		return ANG90+ tantoangle[ SlopeDiv(x,y)];
-	    }
-	}
-	else
-	{
-	    // y<0
-	    y = -y;
-
-	    if (x>y)
-	    {
-		// octant 4
-		return ANG180+tantoangle[ SlopeDiv(y,x)];
-	    }
-	    else
-	    {
-		 // octant 5
-		return ANG270-1-tantoangle[ SlopeDiv(x,y)];
-	    }
-	}
-    }
-    return 0;
-}
-
-
-angle_t
-R_PointToAngle2
-( fixed_t	x1,
-  fixed_t	y1,
-  fixed_t	x2,
-  fixed_t	y2 )
-{	
-    viewx = x1;
-    viewy = y1;
-    
-    return R_PointToAngle (x2, y2);
-}
-
-
-fixed_t
-R_PointToDist
-( fixed_t	x,
-  fixed_t	y )
-{
-    int		angle;
-    fixed_t	dx;
-    fixed_t	dy;
-    fixed_t	temp;
-    fixed_t	dist;
-    fixed_t     frac;
-	
-    dx = abs(x - viewx);
-    dy = abs(y - viewy);
-	
-    if (dy>dx)
-    {
-	temp = dx;
-	dx = dy;
-	dy = temp;
-    }
-
-    // Fix crashes in udm1.wad
-
-    if (dx != 0)
-    {
-        frac = FixedDiv(dy, dx);
-    }
-    else
-    {
-	frac = 0;
-    }
-	
-    angle = (tantoangle[frac>>DBITS]+ANG90) >> ANGLETOFINESHIFT;
-
-    // use as cosine
-    dist = FixedDiv (dx, finesine[angle] );	
-	
-    return dist;
-}
-
-
-
-
-//
-// R_InitPointToAngle
-//
-void R_InitPointToAngle (void)
-{
-    // UNUSED - now getting from tables.c
-#if 0
-    int	i;
-    long	t;
-    float	f;
-//
-// slope (tangent) to angle lookup
-//
-    for (i=0 ; i<=SLOPERANGE ; i++)
-    {
-	f = atan( (float)i/SLOPERANGE )/(3.141592657*2);
-	t = 0xffffffff*f;
-	tantoangle[i] = t;
-    }
-#endif
-}
-
-
-//
-// R_ScaleFromGlobalAngle
-// Returns the texture mapping scale
-//  for the current line (horizontal span)
-//  at the given angle.
-// rw_distance must be calculated first.
-//
-fixed_t R_ScaleFromGlobalAngle (angle_t visangle)
-{
-    fixed_t		scale;
-    angle_t		anglea;
-    angle_t		angleb;
-    int			sinea;
-    int			sineb;
-    fixed_t		num;
-    int			den;
-
-    // UNUSED
-#if 0
-{
-    fixed_t		dist;
-    fixed_t		z;
-    fixed_t		sinv;
-    fixed_t		cosv;
-	
-    sinv = finesine[(visangle-rw_normalangle)>>ANGLETOFINESHIFT];	
-    dist = FixedDiv (rw_distance, sinv);
-    cosv = finecosine[(viewangle-visangle)>>ANGLETOFINESHIFT];
-    z = abs(FixedMul (dist, cosv));
-    scale = FixedDiv(projection, z);
-    return scale;
-}
-#endif
-
-    anglea = ANG90 + (visangle-viewangle);
-    angleb = ANG90 + (visangle-rw_normalangle);
-
-    // both sines are allways positive
-    sinea = finesine[anglea>>ANGLETOFINESHIFT];	
-    sineb = finesine[angleb>>ANGLETOFINESHIFT];
-    num = FixedMul(projection,sineb)<<detailshift;
-    den = FixedMul(rw_distance,sinea);
-
-    if (den > num>>16)
-    {
-	scale = FixedDiv (num, den);
-
-	if (scale > 64*FRACUNIT)
-	    scale = 64*FRACUNIT;
-	else if (scale < 256)
-	    scale = 256;
-    }
-    else
-	scale = 64*FRACUNIT;
-	
-    return scale;
-}
-
-
-
-//
-// R_InitTables
-//
-void R_InitTables (void)
-{
-    // UNUSED: now getting from tables.c
-#if 0
-    int		i;
-    float	a;
-    float	fv;
-    int		t;
-    
-    // viewangle tangent table
-    for (i=0 ; i<FINEANGLES/2 ; i++)
-    {
-	a = (i-FINEANGLES/4+0.5)*PI*2/FINEANGLES;
-	fv = FRACUNIT*tan (a);
-	t = fv;
-	finetangent[i] = t;
-    }
-    
-    // finesine table
-    for (i=0 ; i<5*FINEANGLES/4 ; i++)
-    {
-	// OPTIMIZE: mirror...
-	a = (i+0.5)*PI*2/FINEANGLES;
-	t = FRACUNIT*sin (a);
-	finesine[i] = t;
-    }
-#endif
-
-}
-
-
-
-//
-// R_InitTextureMapping
-//
-void R_InitTextureMapping (void)
-{
-    int			i;
-    int			x;
-    int			t;
-    fixed_t		focallength;
-    
-    // Use tangent table to generate viewangletox:
-    //  viewangletox will give the next greatest x
-    //  after the view angle.
-    //
-    // Calc focallength
-    //  so FIELDOFVIEW angles covers SCREENWIDTH.
-    focallength = FixedDiv (centerxfrac,
-			    finetangent[FINEANGLES/4+FIELDOFVIEW/2] );
-	
-    for (i=0 ; i<FINEANGLES/2 ; i++)
-    {
-	if (finetangent[i] > FRACUNIT*2)
-	    t = -1;
-	else if (finetangent[i] < -FRACUNIT*2)
-	    t = viewwidth+1;
-	else
-	{
-	    t = FixedMul (finetangent[i], focallength);
-	    t = (centerxfrac - t+FRACUNIT-1)>>FRACBITS;
-
-	    if (t < -1)
-		t = -1;
-	    else if (t>viewwidth+1)
-		t = viewwidth+1;
-	}
-	viewangletox[i] = t;
-    }
-    
-    // Scan viewangletox[] to generate xtoviewangle[]:
-    //  xtoviewangle will give the smallest view angle
-    //  that maps to x.	
-    for (x=0;x<=viewwidth;x++)
-    {
-	i = 0;
-	while (viewangletox[i]>x)
-	    i++;
-	xtoviewangle[x] = (i<<ANGLETOFINESHIFT)-ANG90;
-    }
-    
-    // Take out the fencepost cases from viewangletox.
-    for (i=0 ; i<FINEANGLES/2 ; i++)
-    {
-	t = FixedMul (finetangent[i], focallength);
-	t = centerx - t;
-	
-	if (viewangletox[i] == -1)
-	    viewangletox[i] = 0;
-	else if (viewangletox[i] == viewwidth+1)
-	    viewangletox[i]  = viewwidth;
-    }
-	
-    clipangle = xtoviewangle[0];
-}
-
-
-
-//
-// R_InitLightTables
-// Only inits the zlight table,
-//  because the scalelight table changes with view size.
-//
-#define DISTMAP		2
-
-void R_InitLightTables (void)
-{
-    int		i;
-    int		j;
-    int		level;
-    int		startmap; 	
-    int		scale;
-    
-    // Calculate the light levels to use
-    //  for each level / distance combination.
-    for (i=0 ; i< LIGHTLEVELS ; i++)
-    {
-	startmap = ((LIGHTLEVELS-1-i)*2)*NUMCOLORMAPS/LIGHTLEVELS;
-	for (j=0 ; j<MAXLIGHTZ ; j++)
-	{
-	    scale = FixedDiv ((SCREENWIDTH/2*FRACUNIT), (j+1)<<LIGHTZSHIFT);
-	    scale >>= LIGHTSCALESHIFT;
-	    level = startmap - scale/DISTMAP;
-	    
-	    if (level < 0)
-		level = 0;
-
-	    if (level >= NUMCOLORMAPS)
-		level = NUMCOLORMAPS-1;
-
-	    zlight[i][j] = colormaps + level*256;
-	}
-    }
-}
-
-
-
-//
-// R_SetViewSize
-// Do not really change anything here,
-//  because it might be in the middle of a refresh.
-// The change will take effect next refresh.
-//
-boolean		setsizeneeded;
-int		setblocks;
-int		setdetail;
-
-
-void
-R_SetViewSize
-( int		blocks,
-  int		detail )
-{
-    setsizeneeded = true;
-    setblocks = blocks;
-    setdetail = detail;
-}
-
-
-//
-// R_ExecuteSetViewSize
-//
-void R_ExecuteSetViewSize (void)
-{
-    fixed_t	cosadj;
-    fixed_t	dy;
-    int		i;
-    int		j;
-    int		level;
-    int		startmap; 	
-
-    setsizeneeded = false;
-
-    if (setblocks == 11)
-    {
-	scaledviewwidth = SCREENWIDTH;
-	viewheight = SCREENHEIGHT;
-    }
-    else
-    {
-	scaledviewwidth = setblocks*32;
-	viewheight = (setblocks*168/10)&~7;
-    }
-    
-    detailshift = setdetail;
-    viewwidth = scaledviewwidth>>detailshift;
-	
-    centery = viewheight/2;
-    centerx = viewwidth/2;
-    centerxfrac = centerx<<FRACBITS;
-    centeryfrac = centery<<FRACBITS;
-    projection = centerxfrac;
-
-    if (!detailshift)
-    {
-	colfunc = basecolfunc = R_DrawColumn;
-	fuzzcolfunc = R_DrawFuzzColumn;
-	transcolfunc = R_DrawTranslatedColumn;
-	spanfunc = R_DrawSpan;
-    }
-    else
-    {
-	colfunc = basecolfunc = R_DrawColumnLow;
-	fuzzcolfunc = R_DrawFuzzColumnLow;
-	transcolfunc = R_DrawTranslatedColumnLow;
-	spanfunc = R_DrawSpanLow;
-    }
-
-    R_InitBuffer (scaledviewwidth, viewheight);
-	
-    R_InitTextureMapping ();
-    
-    // psprite scales
-    pspritescale = FRACUNIT*viewwidth/SCREENWIDTH;
-    pspriteiscale = FRACUNIT*SCREENWIDTH/viewwidth;
-    
-    // thing clipping
-    for (i=0 ; i<viewwidth ; i++)
-	screenheightarray[i] = viewheight;
-    
-    // planes
-    for (i=0 ; i<viewheight ; i++)
-    {
-	dy = ((i-viewheight/2)<<FRACBITS)+FRACUNIT/2;
-	dy = abs(dy);
-	yslope[i] = FixedDiv ( (viewwidth<<detailshift)/2*FRACUNIT, dy);
-    }
-	
-    for (i=0 ; i<viewwidth ; i++)
-    {
-	cosadj = abs(finecosine[xtoviewangle[i]>>ANGLETOFINESHIFT]);
-	distscale[i] = FixedDiv (FRACUNIT,cosadj);
-    }
-    
-    // Calculate the light levels to use
-    //  for each level / scale combination.
-    for (i=0 ; i< LIGHTLEVELS ; i++)
-    {
-	startmap = ((LIGHTLEVELS-1-i)*2)*NUMCOLORMAPS/LIGHTLEVELS;
-	for (j=0 ; j<MAXLIGHTSCALE ; j++)
-	{
-	    level = startmap - j*SCREENWIDTH/(viewwidth<<detailshift)/DISTMAP;
-	    
-	    if (level < 0)
-		level = 0;
-
-	    if (level >= NUMCOLORMAPS)
-		level = NUMCOLORMAPS-1;
-
-	    scalelight[i][j] = colormaps + level*256;
-	}
-    }
-}
-
-
-
-//
-// R_Init
-//
-
-
-
-void R_Init (void)
-{
-    R_InitData ();
-    printf (".");
-    R_InitPointToAngle ();
-    printf (".");
-    R_InitTables ();
-    // viewwidth / viewheight / detailLevel are set by the defaults
-    printf (".");
-
-    R_SetViewSize (screenblocks, detailLevel);
-    R_InitPlanes ();
-    printf (".");
-    R_InitLightTables ();
-    printf (".");
-    R_InitSkyMap ();
-    R_InitTranslationTables ();
-    printf (".");
-	
-    framecount = 0;
-}
-
-
-//
-// R_PointInSubsector
-//
-subsector_t*
-R_PointInSubsector
-( fixed_t	x,
-  fixed_t	y )
-{
-    node_t*	node;
-    int		side;
-    int		nodenum;
-
-    // single subsector is a special case
-    if (!numnodes)				
-	return subsectors;
-		
-    nodenum = numnodes-1;
-
-    while (! (nodenum & NF_SUBSECTOR) )
-    {
-	node = &nodes[nodenum];
-	side = R_PointOnSide (x, y, node);
-	nodenum = node->children[side];
-    }
-	
-    return &subsectors[nodenum & ~NF_SUBSECTOR];
-}
-
-
-
-//
-// R_SetupFrame
-//
-void R_SetupFrame (player_t* player)
-{		
-    int		i;
-    
-    viewplayer = player;
-    viewx = player->mo->x;
-    viewy = player->mo->y;
-    viewangle = player->mo->angle + viewangleoffset;
-    extralight = player->extralight;
-
-    viewz = player->viewz;
-    
-    viewsin = finesine[viewangle>>ANGLETOFINESHIFT];
-    viewcos = finecosine[viewangle>>ANGLETOFINESHIFT];
-	
-    sscount = 0;
-	
-    if (player->fixedcolormap)
-    {
-	fixedcolormap =
-	    colormaps
-	    + player->fixedcolormap*256*sizeof(lighttable_t);
-	
-	walllights = scalelightfixed;
-
-	for (i=0 ; i<MAXLIGHTSCALE ; i++)
-	    scalelightfixed[i] = fixedcolormap;
-    }
-    else
-	fixedcolormap = 0;
-		
-    framecount++;
-    validcount++;
-}
-
-
-
-//
-// R_RenderView
-//
-void R_RenderPlayerView (player_t* player)
-{	
-    R_SetupFrame (player);
-
-    // Clear buffers.
-    R_ClearClipSegs ();
-    R_ClearDrawSegs ();
-    R_ClearPlanes ();
-    R_ClearSprites ();
-    
-    // check for new console commands.
-    NetUpdate ();
-
-    // The head node is the last node output.
-    R_RenderBSPNode (numnodes-1);
-    
-    // Check for new console commands.
-    NetUpdate ();
-    
-    R_DrawPlanes ();
-    
-    // Check for new console commands.
-    NetUpdate ();
-    
-    R_DrawMasked ();
-
-    // Check for new console commands.
-    NetUpdate ();				
-}