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aas_create.c
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aas_create.c
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/*
===========================================================================
Return to Castle Wolfenstein single player GPL Source Code
Copyright (C) 1999-2010 id Software LLC, a ZeniMax Media company.
This file is part of the Return to Castle Wolfenstein single player GPL Source Code (RTCW SP Source Code).
RTCW SP Source Code 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.
RTCW SP Source Code 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 RTCW SP Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the RTCW SP Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the RTCW SP Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
//===========================================================================
//
// Name: aas_create.c
// Function: Creation of AAS
// Programmer: Mr Elusive (MrElusive@demigod.demon.nl)
// Last update: 1997-12-04
// Tab Size: 3
//===========================================================================
#include "qbsp.h"
#include "botlib/aasfile.h"
#include "aas_create.h"
#include "aas_store.h"
#include "aas_gsubdiv.h"
#include "aas_facemerging.h"
#include "aas_areamerging.h"
#include "aas_edgemelting.h"
#include "aas_prunenodes.h"
#include "aas_cfg.h"
#include "qcommon/surfaceflags.h"
//#define AW_DEBUG
//#define L_DEBUG
#define AREAONFACESIDE( face, area ) ( face->frontarea != area )
tmp_aas_t tmpaasworld;
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_InitTmpAAS( void ) {
//tmp faces
tmpaasworld.numfaces = 0;
tmpaasworld.facenum = 0;
tmpaasworld.faces = NULL;
//tmp convex areas
tmpaasworld.numareas = 0;
tmpaasworld.areanum = 0;
tmpaasworld.areas = NULL;
//tmp nodes
tmpaasworld.numnodes = 0;
tmpaasworld.nodes = NULL;
//
tmpaasworld.nodebuffer = NULL;
} //end of the function AAS_InitTmpAAS
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_FreeTmpAAS( void ) {
tmp_face_t *f, *nextf;
tmp_area_t *a, *nexta;
tmp_nodebuf_t *nb, *nextnb;
//free all the faces
for ( f = tmpaasworld.faces; f; f = nextf )
{
nextf = f->l_next;
if ( f->winding ) {
FreeWinding( f->winding );
}
FreeMemory( f );
} //end if
//free all tmp areas
for ( a = tmpaasworld.areas; a; a = nexta )
{
nexta = a->l_next;
if ( a->settings ) {
FreeMemory( a->settings );
}
FreeMemory( a );
} //end for
//free all the tmp nodes
for ( nb = tmpaasworld.nodebuffer; nb; nb = nextnb )
{
nextnb = nb->next;
FreeMemory( nb );
} //end for
} //end of the function AAS_FreeTmpAAS
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
tmp_face_t *AAS_AllocTmpFace( void ) {
tmp_face_t *tmpface;
tmpface = (tmp_face_t *) GetClearedMemory( sizeof( tmp_face_t ) );
tmpface->num = tmpaasworld.facenum++;
tmpface->l_prev = NULL;
tmpface->l_next = tmpaasworld.faces;
if ( tmpaasworld.faces ) {
tmpaasworld.faces->l_prev = tmpface;
}
tmpaasworld.faces = tmpface;
tmpaasworld.numfaces++;
return tmpface;
} //end of the function AAS_AllocTmpFace
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_FreeTmpFace( tmp_face_t *tmpface ) {
if ( tmpface->l_next ) {
tmpface->l_next->l_prev = tmpface->l_prev;
}
if ( tmpface->l_prev ) {
tmpface->l_prev->l_next = tmpface->l_next;
} else { tmpaasworld.faces = tmpface->l_next;}
//free the winding
if ( tmpface->winding ) {
FreeWinding( tmpface->winding );
}
//free the face
FreeMemory( tmpface );
tmpaasworld.numfaces--;
} //end of the function AAS_FreeTmpFace
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
tmp_area_t *AAS_AllocTmpArea( void ) {
tmp_area_t *tmparea;
tmparea = (tmp_area_t *) GetClearedMemory( sizeof( tmp_area_t ) );
tmparea->areanum = tmpaasworld.areanum++;
tmparea->l_prev = NULL;
tmparea->l_next = tmpaasworld.areas;
if ( tmpaasworld.areas ) {
tmpaasworld.areas->l_prev = tmparea;
}
tmpaasworld.areas = tmparea;
tmpaasworld.numareas++;
return tmparea;
} //end of the function AAS_AllocTmpArea
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_FreeTmpArea( tmp_area_t *tmparea ) {
if ( tmparea->l_next ) {
tmparea->l_next->l_prev = tmparea->l_prev;
}
if ( tmparea->l_prev ) {
tmparea->l_prev->l_next = tmparea->l_next;
} else { tmpaasworld.areas = tmparea->l_next;}
if ( tmparea->settings ) {
FreeMemory( tmparea->settings );
}
FreeMemory( tmparea );
tmpaasworld.numareas--;
} //end of the function AAS_FreeTmpArea
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
tmp_node_t *AAS_AllocTmpNode( void ) {
tmp_nodebuf_t *nodebuf;
if ( !tmpaasworld.nodebuffer ||
tmpaasworld.nodebuffer->numnodes >= NODEBUF_SIZE ) {
nodebuf = (tmp_nodebuf_t *) GetClearedMemory( sizeof( tmp_nodebuf_t ) );
nodebuf->next = tmpaasworld.nodebuffer;
nodebuf->numnodes = 0;
tmpaasworld.nodebuffer = nodebuf;
} //end if
tmpaasworld.numnodes++;
return &tmpaasworld.nodebuffer->nodes[tmpaasworld.nodebuffer->numnodes++];
} //end of the function AAS_AllocTmpNode
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_FreeTmpNode( tmp_node_t *tmpnode ) {
tmpaasworld.numnodes--;
} //end of the function AAS_FreeTmpNode
//===========================================================================
// returns true if the face is a gap from the given side
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
int AAS_GapFace( tmp_face_t *tmpface, int side ) {
vec3_t invgravity;
//if the face is a solid or ground face it can't be a gap
if ( tmpface->faceflags & ( FACE_GROUND | FACE_SOLID ) ) {
return 0;
}
VectorCopy( cfg.phys_gravitydirection, invgravity );
VectorInverse( invgravity );
return ( DotProduct( invgravity, mapplanes[tmpface->planenum ^ side].normal ) > cfg.phys_maxsteepness );
} //end of the function AAS_GapFace
//===========================================================================
// returns true if the face is a ground face
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
int AAS_GroundFace( tmp_face_t *tmpface ) {
vec3_t invgravity;
//must be a solid face
if ( !( tmpface->faceflags & FACE_SOLID ) ) {
return 0;
}
VectorCopy( cfg.phys_gravitydirection, invgravity );
VectorInverse( invgravity );
return ( DotProduct( invgravity, mapplanes[tmpface->planenum].normal ) > cfg.phys_maxsteepness );
} //end of the function AAS_GroundFace
//===========================================================================
// adds the side of a face to an area
//
// side : 0 = front side
// 1 = back side
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_AddFaceSideToArea( tmp_face_t *tmpface, int side, tmp_area_t *tmparea ) {
int tmpfaceside;
if ( side ) {
if ( tmpface->backarea ) {
Error( "AAS_AddFaceSideToArea: already a back area\n" );
}
} //end if
else
{
if ( tmpface->frontarea ) {
Error( "AAS_AddFaceSideToArea: already a front area\n" );
}
} //end else
if ( side ) {
tmpface->backarea = tmparea;
} else { tmpface->frontarea = tmparea;}
if ( tmparea->tmpfaces ) {
tmpfaceside = tmparea->tmpfaces->frontarea != tmparea;
tmparea->tmpfaces->prev[tmpfaceside] = tmpface;
} //end if
tmpface->next[side] = tmparea->tmpfaces;
tmpface->prev[side] = NULL;
tmparea->tmpfaces = tmpface;
} //end of the function AAS_AddFaceSideToArea
//===========================================================================
// remove (a side of) a face from an area
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_RemoveFaceFromArea( tmp_face_t *tmpface, tmp_area_t *tmparea ) {
int side, prevside, nextside;
if ( tmpface->frontarea != tmparea &&
tmpface->backarea != tmparea ) {
Error( "AAS_RemoveFaceFromArea: face not part of the area" );
} //end if
side = tmpface->frontarea != tmparea;
if ( tmpface->prev[side] ) {
prevside = tmpface->prev[side]->frontarea != tmparea;
tmpface->prev[side]->next[prevside] = tmpface->next[side];
} //end if
else
{
tmparea->tmpfaces = tmpface->next[side];
} //end else
if ( tmpface->next[side] ) {
nextside = tmpface->next[side]->frontarea != tmparea;
tmpface->next[side]->prev[nextside] = tmpface->prev[side];
} //end if
//remove the area number from the face depending on the side
if ( side ) {
tmpface->backarea = NULL;
} else { tmpface->frontarea = NULL;}
tmpface->prev[side] = NULL;
tmpface->next[side] = NULL;
} //end of the function AAS_RemoveFaceFromArea
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_CheckArea( tmp_area_t *tmparea ) {
int side;
tmp_face_t *face;
plane_t *plane;
vec3_t wcenter, acenter = {0, 0, 0};
vec3_t normal;
float n, dist;
if ( tmparea->invalid ) {
Log_Print( "AAS_CheckArea: invalid area\n" );
}
for ( n = 0, face = tmparea->tmpfaces; face; face = face->next[side] )
{
//side of the face the area is on
side = face->frontarea != tmparea;
WindingCenter( face->winding, wcenter );
VectorAdd( acenter, wcenter, acenter );
n++;
} //end for
n = 1 / n;
VectorScale( acenter, n, acenter );
for ( face = tmparea->tmpfaces; face; face = face->next[side] )
{
//side of the face the area is on
side = face->frontarea != tmparea;
#ifdef L_DEBUG
if ( WindingError( face->winding ) ) {
Log_Write( "AAS_CheckArea: area %d face %d: %s\r\n", tmparea->areanum,
face->num, WindingErrorString() );
} //end if
#endif L_DEBUG
plane = &mapplanes[face->planenum ^ side];
if ( DotProduct( plane->normal, acenter ) - plane->dist < 0 ) {
Log_Print( "AAS_CheckArea: area %d face %d is flipped\n", tmparea->areanum, face->num );
Log_Print( "AAS_CheckArea: area %d center is %f %f %f\n", tmparea->areanum, acenter[0], acenter[1], acenter[2] );
} //end if
//check if the winding plane is the same as the face plane
WindingPlane( face->winding, normal, &dist );
plane = &mapplanes[face->planenum];
#ifdef L_DEBUG
if ( fabs( dist - plane->dist ) > 0.4 ||
fabs( normal[0] - plane->normal[0] ) > 0.0001 ||
fabs( normal[1] - plane->normal[1] ) > 0.0001 ||
fabs( normal[2] - plane->normal[2] ) > 0.0001 ) {
Log_Write( "AAS_CheckArea: area %d face %d winding plane unequal to face plane\r\n",
tmparea->areanum, face->num );
} //end if
#endif L_DEBUG
} //end for
} //end of the function AAS_CheckArea
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_CheckFaceWindingPlane( tmp_face_t *face ) {
float dist, sign1, sign2;
vec3_t normal;
plane_t *plane;
winding_t *w;
//check if the winding plane is the same as the face plane
WindingPlane( face->winding, normal, &dist );
plane = &mapplanes[face->planenum];
//
sign1 = DotProduct( plane->normal, normal );
//
if ( fabs( dist - plane->dist ) > 0.4 ||
fabs( normal[0] - plane->normal[0] ) > 0.0001 ||
fabs( normal[1] - plane->normal[1] ) > 0.0001 ||
fabs( normal[2] - plane->normal[2] ) > 0.0001 ) {
VectorInverse( normal );
dist = -dist;
if ( fabs( dist - plane->dist ) > 0.4 ||
fabs( normal[0] - plane->normal[0] ) > 0.0001 ||
fabs( normal[1] - plane->normal[1] ) > 0.0001 ||
fabs( normal[2] - plane->normal[2] ) > 0.0001 ) {
Log_Write( "AAS_CheckFaceWindingPlane: face %d winding plane unequal to face plane\r\n",
face->num );
//
sign2 = DotProduct( plane->normal, normal );
if ( ( sign1 < 0 && sign2 > 0 ) ||
( sign1 > 0 && sign2 < 0 ) ) {
Log_Write( "AAS_CheckFaceWindingPlane: face %d winding reversed\r\n",
face->num );
w = face->winding;
face->winding = ReverseWinding( w );
FreeWinding( w );
} //end if
} //end if
else
{
Log_Write( "AAS_CheckFaceWindingPlane: face %d winding reversed\r\n",
face->num );
w = face->winding;
face->winding = ReverseWinding( w );
FreeWinding( w );
} //end else
} //end if
} //end of the function AAS_CheckFaceWindingPlane
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_CheckAreaWindingPlanes( void ) {
int side;
tmp_area_t *tmparea;
tmp_face_t *face;
Log_Write( "AAS_CheckAreaWindingPlanes:\r\n" );
for ( tmparea = tmpaasworld.areas; tmparea; tmparea = tmparea->l_next )
{
if ( tmparea->invalid ) {
continue;
}
for ( face = tmparea->tmpfaces; face; face = face->next[side] )
{
side = face->frontarea != tmparea;
AAS_CheckFaceWindingPlane( face );
} //end for
} //end for
} //end of the function AAS_CheckAreaWindingPlanes
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_FlipAreaFaces( tmp_area_t *tmparea ) {
int side;
tmp_face_t *face;
plane_t *plane;
vec3_t wcenter, acenter = {0, 0, 0};
//winding_t *w;
float n;
for ( n = 0, face = tmparea->tmpfaces; face; face = face->next[side] )
{
if ( !face->frontarea ) {
Error( "face %d has no front area\n", face->num );
}
//side of the face the area is on
side = face->frontarea != tmparea;
WindingCenter( face->winding, wcenter );
VectorAdd( acenter, wcenter, acenter );
n++;
} //end for
n = 1 / n;
VectorScale( acenter, n, acenter );
for ( face = tmparea->tmpfaces; face; face = face->next[side] )
{
//side of the face the area is on
side = face->frontarea != tmparea;
plane = &mapplanes[face->planenum ^ side];
if ( DotProduct( plane->normal, acenter ) - plane->dist < 0 ) {
Log_Print( "area %d face %d flipped: front area %d, back area %d\n", tmparea->areanum, face->num,
face->frontarea ? face->frontarea->areanum : 0,
face->backarea ? face->backarea->areanum : 0 );
/*
face->planenum = face->planenum ^ 1;
w = face->winding;
face->winding = ReverseWinding(w);
FreeWinding(w);
*/
} //end if
#ifdef L_DEBUG
{
float dist;
vec3_t normal;
//check if the winding plane is the same as the face plane
WindingPlane( face->winding, normal, &dist );
plane = &mapplanes[face->planenum];
if ( fabs( dist - plane->dist ) > 0.4 ||
fabs( normal[0] - plane->normal[0] ) > 0.0001 ||
fabs( normal[1] - plane->normal[1] ) > 0.0001 ||
fabs( normal[2] - plane->normal[2] ) > 0.0001 ) {
Log_Write( "area %d face %d winding plane unequal to face plane\r\n",
tmparea->areanum, face->num );
} //end if
}
#endif
} //end for
} //end of the function AAS_FlipAreaFaces
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_RemoveAreaFaceColinearPoints( void ) {
int side;
tmp_face_t *face;
tmp_area_t *tmparea;
//FIXME: loop over the faces instead of area->faces
for ( tmparea = tmpaasworld.areas; tmparea; tmparea = tmparea->l_next )
{
for ( face = tmparea->tmpfaces; face; face = face->next[side] )
{
side = face->frontarea != tmparea;
RemoveColinearPoints( face->winding );
// RemoveEqualPoints(face->winding, 0.1);
} //end for
} //end for
} //end of the function AAS_RemoveAreaFaceColinearPoints
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_RemoveTinyFaces( void ) {
int side, num;
tmp_face_t *face, *nextface;
tmp_area_t *tmparea;
//FIXME: loop over the faces instead of area->faces
Log_Write( "AAS_RemoveTinyFaces\r\n" );
num = 0;
for ( tmparea = tmpaasworld.areas; tmparea; tmparea = tmparea->l_next )
{
for ( face = tmparea->tmpfaces; face; face = nextface )
{
side = face->frontarea != tmparea;
nextface = face->next[side];
//
if ( WindingArea( face->winding ) < 1 ) {
if ( face->frontarea ) {
AAS_RemoveFaceFromArea( face, face->frontarea );
}
if ( face->backarea ) {
AAS_RemoveFaceFromArea( face, face->backarea );
}
AAS_FreeTmpFace( face );
//Log_Write("area %d face %d is tiny\r\n", tmparea->areanum, face->num);
num++;
} //end if
} //end for
} //end for
Log_Write( "%d tiny faces removed\r\n", num );
} //end of the function AAS_RemoveTinyFaces
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_CreateAreaSettings( void ) {
int i, flags, side, numgrounded, numladderareas, numliquidareas;
tmp_face_t *face;
tmp_area_t *tmparea;
int count;
numgrounded = 0;
numladderareas = 0;
numliquidareas = 0;
Log_Write( "AAS_CreateAreaSettings\r\n" );
i = 0;
qprintf( "%6d areas provided with settings", i );
for ( tmparea = tmpaasworld.areas; tmparea; tmparea = tmparea->l_next )
{
//if the area is invalid there no need to create settings for it
if ( tmparea->invalid ) {
continue;
}
tmparea->settings = (tmp_areasettings_t *) GetClearedMemory( sizeof( tmp_areasettings_t ) );
tmparea->settings->contents = tmparea->contents;
tmparea->settings->modelnum = tmparea->modelnum;
flags = 0;
count = 0;
tmparea->settings->groundsteepness = 0.0;
for ( face = tmparea->tmpfaces; face; face = face->next[side] )
{
side = face->frontarea != tmparea;
flags |= face->faceflags;
// Ridah, add this face's steepness
if ( face->faceflags & FACE_GROUND ) {
tmparea->settings->groundsteepness += ( 1.0 - mapplanes[face->planenum ^ side].normal[2] );
count++;
}
} //end for
tmparea->settings->groundsteepness /= (float)count;
if ( tmparea->settings->groundsteepness > 1.0 ) {
tmparea->settings->groundsteepness = 1.0;
}
if ( tmparea->settings->groundsteepness < 0.0 ) {
tmparea->settings->groundsteepness = 0.0;
}
tmparea->settings->areaflags = 0;
if ( flags & FACE_GROUND ) {
tmparea->settings->areaflags |= AREA_GROUNDED;
numgrounded++;
} //end if
if ( flags & FACE_LADDER ) {
tmparea->settings->areaflags |= AREA_LADDER;
numladderareas++;
} //end if
if ( tmparea->contents & ( AREACONTENTS_WATER |
AREACONTENTS_SLIME |
AREACONTENTS_LAVA ) ) {
tmparea->settings->areaflags |= AREA_LIQUID;
numliquidareas++;
} //end if
//presence type of the area
tmparea->settings->presencetype = tmparea->presencetype;
//
qprintf( "\r%6d", ++i );
} //end for
qprintf( "\n" );
#ifdef AASINFO
Log_Print( "%6d grounded areas\n", numgrounded );
Log_Print( "%6d ladder areas\n", numladderareas );
Log_Print( "%6d liquid areas\n", numliquidareas );
#endif //AASINFO
} //end of the function AAS_CreateAreaSettings
//===========================================================================
// create a tmp AAS area from a leaf node
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
//portal_t *globalPortalDebug;
tmp_node_t *AAS_CreateArea( node_t *node ) {
int pside;
int areafaceflags;
portal_t *p;
tmp_face_t *tmpface;
tmp_area_t *tmparea;
tmp_node_t *tmpnode;
//vec3_t up = {0, 0, 1}; // TTimo: unused
//create an area from this leaf
tmparea = AAS_AllocTmpArea();
tmparea->tmpfaces = NULL;
//clear the area face flags
areafaceflags = 0;
//make aas faces from the portals
for ( p = node->portals; p; p = p->next[pside] )
{
pside = ( p->nodes[1] == node );
//don't create faces from very small portals
// if (WindingArea(p->winding) < 1) continue;
//if there's already a face created for this portal
if ( p->tmpface ) {
//add the back side of the face to the area
AAS_AddFaceSideToArea( p->tmpface, 1, tmparea );
} //end if
else
{
tmpface = AAS_AllocTmpFace();
//set the face pointer at the portal so we can see from
//the portal there's a face created for it
p->tmpface = tmpface;
//FIXME: test this change
//tmpface->planenum = (p->planenum & ~1) | pside;
tmpface->planenum = p->planenum ^ pside;
if ( pside ) {
tmpface->winding = ReverseWinding( p->winding );
} else { tmpface->winding = CopyWinding( p->winding );}
#ifdef L_DEBUG
//
AAS_CheckFaceWindingPlane( tmpface );
#endif //L_DEBUG
//if there's solid at the other side of the portal
if ( p->nodes[!pside]->contents & ( CONTENTS_SOLID | CONTENTS_PLAYERCLIP ) ) {
tmpface->faceflags |= FACE_SOLID;
} //end if
//else there is no solid at the other side and if there
//is a liquid at this side
else if ( node->contents & ( CONTENTS_WATER | CONTENTS_SLIME | CONTENTS_LAVA ) ) {
tmpface->faceflags |= FACE_LIQUID;
//if there's no liquid at the other side
if ( !( p->nodes[!pside]->contents & ( CONTENTS_WATER | CONTENTS_SLIME | CONTENTS_LAVA ) ) ) {
tmpface->faceflags |= FACE_LIQUIDSURFACE;
} //end if
} //end else
//if there's ladder contents at other side of the portal
if ( ( p->nodes[pside]->contents & CONTENTS_LADDER ) ||
( p->nodes[!pside]->contents & CONTENTS_LADDER ) ) {
//NOTE: doesn't have to be solid at the other side because
// when standing one can use a crouch area (which is not solid)
// as a ladder
// imagine a ladder one can walk underthrough,
// under the ladder against the ladder is a crouch area
// the (vertical) sides of this crouch area area also used as
// ladder sides when standing (not crouched)
tmpface->faceflags |= FACE_LADDER;
} //end if
//if it is possible to stand on the face
if ( AAS_GroundFace( tmpface ) ) {
tmpface->faceflags |= FACE_GROUND;
} //end if
//
areafaceflags |= tmpface->faceflags;
//no aas face number yet (zero is a dummy in the aasworld faces)
tmpface->aasfacenum = 0;
//add the front side of the face to the area
AAS_AddFaceSideToArea( tmpface, 0, tmparea );
} //end else
} //end for
qprintf( "\r%6d", tmparea->areanum );
//presence type in the area
tmparea->presencetype = ~node->expansionbboxes & cfg.allpresencetypes;
//
tmparea->contents = 0;
if ( node->contents & CONTENTS_CLUSTERPORTAL ) {
tmparea->contents |= AREACONTENTS_CLUSTERPORTAL;
}
if ( node->contents & CONTENTS_MOVER ) {
tmparea->contents |= AREACONTENTS_MOVER;
}
if ( node->contents & CONTENTS_TELEPORTER ) {
tmparea->contents |= AREACONTENTS_TELEPORTER;
}
if ( node->contents & CONTENTS_JUMPPAD ) {
tmparea->contents |= AREACONTENTS_JUMPPAD;
}
if ( node->contents & CONTENTS_DONOTENTER ) {
tmparea->contents |= AREACONTENTS_DONOTENTER;
}
if ( node->contents & CONTENTS_DONOTENTER_LARGE ) {
tmparea->contents |= AREACONTENTS_DONOTENTER_LARGE;
}
if ( node->contents & CONTENTS_WATER ) {
tmparea->contents |= AREACONTENTS_WATER;
}
if ( node->contents & CONTENTS_LAVA ) {
tmparea->contents |= AREACONTENTS_LAVA;
}
if ( node->contents & CONTENTS_SLIME ) {
tmparea->contents |= AREACONTENTS_SLIME;
}
//store the bsp model that's inside this node
tmparea->modelnum = node->modelnum;
//sorta check for flipped area faces (remove??)
AAS_FlipAreaFaces( tmparea );
//check if the area is ok (remove??)
AAS_CheckArea( tmparea );
//
tmpnode = AAS_AllocTmpNode();
tmpnode->planenum = 0;
tmpnode->children[0] = 0;
tmpnode->children[1] = 0;
tmpnode->tmparea = tmparea;
//
return tmpnode;
} //end of the function AAS_CreateArea
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
tmp_node_t *AAS_CreateAreas_r( node_t *node ) {
tmp_node_t *tmpnode;
//recurse down to leafs
if ( node->planenum != PLANENUM_LEAF ) {
//the first tmp node is a dummy
tmpnode = AAS_AllocTmpNode();
tmpnode->planenum = node->planenum;
tmpnode->children[0] = AAS_CreateAreas_r( node->children[0] );
tmpnode->children[1] = AAS_CreateAreas_r( node->children[1] );
return tmpnode;
} //end if
//areas won't be created for solid leafs
if ( node->contents & CONTENTS_SOLID ) {
//just return zero for a solid leaf (in tmp AAS NULL is a solid leaf)
return NULL;
} //end if
return AAS_CreateArea( node );
} //end of the function AAS_CreateAreas_r
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_CreateAreas( node_t *node ) {
Log_Write( "AAS_CreateAreas\r\n" );
qprintf( "%6d areas created", 0 );
tmpaasworld.nodes = AAS_CreateAreas_r( node );
qprintf( "\n" );
Log_Write( "%6d areas created\r\n", tmpaasworld.numareas );
} //end of the function AAS_CreateAreas
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_PrintNumGroundFaces( void ) {
tmp_face_t *tmpface;
int numgroundfaces = 0;
for ( tmpface = tmpaasworld.faces; tmpface; tmpface = tmpface->l_next )
{
if ( tmpface->faceflags & FACE_GROUND ) {
numgroundfaces++;
} //end if
} //end for
qprintf( "%6d ground faces\n", numgroundfaces );
} //end of the function AAS_PrintNumGroundFaces
//===========================================================================
// checks the number of shared faces between the given two areas
// since areas are convex they should only have ONE shared face
// however due to crappy face merging there are sometimes several
// shared faces
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_CheckAreaSharedFaces( tmp_area_t *tmparea1, tmp_area_t *tmparea2 ) {
int numsharedfaces, side;
tmp_face_t *face1, *sharedface;
if ( tmparea1->invalid || tmparea2->invalid ) {
return;
}
sharedface = NULL;
numsharedfaces = 0;
for ( face1 = tmparea1->tmpfaces; face1; face1 = face1->next[side] )
{
side = face1->frontarea != tmparea1;
if ( face1->backarea == tmparea2 || face1->frontarea == tmparea2 ) {
sharedface = face1;
numsharedfaces++;
} //end if
} //end if
if ( !sharedface ) {
return;
}
//the areas should only have one shared face
if ( numsharedfaces > 1 ) {
Log_Write( "---- tmp area %d and %d have %d shared faces\r\n",
tmparea1->areanum, tmparea2->areanum, numsharedfaces );
for ( face1 = tmparea1->tmpfaces; face1; face1 = face1->next[side] )
{
side = face1->frontarea != tmparea1;
if ( face1->backarea == tmparea2 || face1->frontarea == tmparea2 ) {
Log_Write( "face %d, planenum = %d, face->frontarea = %d face->backarea = %d\r\n",
face1->num, face1->planenum, face1->frontarea->areanum, face1->backarea->areanum );
} //end if
} //end if
} //end if
} //end of the function AAS_CheckAreaSharedFaces
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_CheckSharedFaces( void ) {
tmp_area_t *tmparea1, *tmparea2;
for ( tmparea1 = tmpaasworld.areas; tmparea1; tmparea1 = tmparea1->l_next )
{
for ( tmparea2 = tmpaasworld.areas; tmparea2; tmparea2 = tmparea2->l_next )
{
if ( tmparea1 == tmparea2 ) {
continue;
}
AAS_CheckAreaSharedFaces( tmparea1, tmparea2 );
} //end for
} //end for
} //end of the function AAS_CheckSharedFaces
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void AAS_FlipFace( tmp_face_t *face ) {
tmp_area_t *frontarea, *backarea;
winding_t *w;
frontarea = face->frontarea;
backarea = face->backarea;
//must have an area at both sides before flipping is allowed
if ( !frontarea || !backarea ) {
return;
}
//flip the face winding
w = face->winding;
face->winding = ReverseWinding( w );
FreeWinding( w );
//flip the face plane
face->planenum ^= 1;
//flip the face areas
AAS_RemoveFaceFromArea( face, frontarea );
AAS_RemoveFaceFromArea( face, backarea );
AAS_AddFaceSideToArea( face, 1, frontarea );
AAS_AddFaceSideToArea( face, 0, backarea );
} //end of the function AAS_FlipFace
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
/*
void AAS_FlipAreaSharedFaces(tmp_area_t *tmparea1, tmp_area_t *tmparea2)
{
int numsharedfaces, side, area1facing, area2facing;
tmp_face_t *face1, *sharedface;
if (tmparea1->invalid || tmparea2->invalid) return;
sharedface = NULL;
numsharedfaces = 0;
area1facing = 0; //number of shared faces facing towards area 1
area2facing = 0; //number of shared faces facing towards area 2
for (face1 = tmparea1->tmpfaces; face1; face1 = face1->next[side])
{
side = face1->frontarea != tmparea1;
if (face1->backarea == tmparea2 || face1->frontarea == tmparea2)
{
sharedface = face1;
numsharedfaces++;
if (face1->frontarea == tmparea1) area1facing++;
else area2facing++;
} //end if
} //end if
if (!sharedface) return;
//if there's only one shared face
if (numsharedfaces <= 1) return;
//if all the shared faces are facing to the same area
if (numsharedfaces == area1facing || numsharedfaces == area2facing) return;
//
do
{
for (face1 = tmparea1->tmpfaces; face1; face1 = face1->next[side])
{
side = face1->frontarea != tmparea1;
if (face1->backarea == tmparea2 || face1->frontarea == tmparea2)
{
if (face1->frontarea != tmparea1)
{
AAS_FlipFace(face1);
break;
} //end if
} //end if
} //end for
} while(face1);
} //end of the function AAS_FlipAreaSharedFaces
//===========================================================================