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736ec20d4d
Don't include the lazy precompiled.h everywhere, only what's required for the compilation unit. platform.h needs to be included instead to provide all essential defines and types. All includes use the relative path to the neo or the game specific root. Move all idlib related includes from idlib/Lib.h to precompiled.h. precompiled.h still exists for the MFC stuff in tools/. Add some missing header guards.
606 lines
15 KiB
C++
606 lines
15 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 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 Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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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.
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===========================================================================
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*/
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#include "sys/platform.h"
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#include "framework/Common.h"
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#include "tools/compilers/aas/AASFile_local.h"
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//===============================================================
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//
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// Environment Sampling
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//
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//===============================================================
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/*
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================
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idAASFileLocal::EdgeCenter
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================
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*/
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idVec3 idAASFileLocal::EdgeCenter( int edgeNum ) const {
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const aasEdge_t *edge;
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edge = &edges[edgeNum];
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return ( vertices[edge->vertexNum[0]] + vertices[edge->vertexNum[1]] ) * 0.5f;
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}
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/*
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================
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idAASFileLocal::FaceCenter
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================
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*/
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idVec3 idAASFileLocal::FaceCenter( int faceNum ) const {
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int i, edgeNum;
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const aasFace_t *face;
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const aasEdge_t *edge;
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idVec3 center;
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center = vec3_origin;
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face = &faces[faceNum];
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if ( face->numEdges > 0 ) {
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for ( i = 0; i < face->numEdges; i++ ) {
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edgeNum = edgeIndex[ face->firstEdge + i ];
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edge = &edges[ abs( edgeNum ) ];
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center += vertices[ edge->vertexNum[ INTSIGNBITSET(edgeNum) ] ];
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}
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center /= face->numEdges;
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}
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return center;
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}
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/*
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================
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idAASFileLocal::AreaCenter
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================
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*/
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idVec3 idAASFileLocal::AreaCenter( int areaNum ) const {
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int i, faceNum;
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const aasArea_t *area;
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idVec3 center;
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center = vec3_origin;
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area = &areas[areaNum];
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if ( area->numFaces > 0 ) {
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for ( i = 0; i < area->numFaces; i++ ) {
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faceNum = faceIndex[area->firstFace + i];
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center += FaceCenter( abs(faceNum) );
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}
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center /= area->numFaces;
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}
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return center;
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}
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/*
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============
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idAASFileLocal::AreaReachableGoal
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============
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*/
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idVec3 idAASFileLocal::AreaReachableGoal( int areaNum ) const {
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int i, faceNum, numFaces;
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const aasArea_t *area;
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idVec3 center;
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idVec3 start, end;
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aasTrace_t trace;
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area = &areas[areaNum];
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if ( !(area->flags & (AREA_REACHABLE_WALK|AREA_REACHABLE_FLY)) || (area->flags & AREA_LIQUID) ) {
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return AreaCenter( areaNum );
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}
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center = vec3_origin;
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numFaces = 0;
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for ( i = 0; i < area->numFaces; i++ ) {
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faceNum = faceIndex[area->firstFace + i];
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if ( !(faces[abs(faceNum)].flags & FACE_FLOOR) ) {
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continue;
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}
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center += FaceCenter( abs(faceNum) );
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numFaces++;
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}
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if ( numFaces > 0 ) {
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center /= numFaces;
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}
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center[2] += 1.0f;
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end = center;
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end[2] -= 1024;
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Trace( trace, center, end );
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return trace.endpos;
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}
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/*
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================
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idAASFileLocal::EdgeBounds
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================
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*/
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idBounds idAASFileLocal::EdgeBounds( int edgeNum ) const {
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const aasEdge_t *edge;
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idBounds bounds;
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edge = &edges[ abs( edgeNum ) ];
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bounds[0] = bounds[1] = vertices[ edge->vertexNum[0] ];
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bounds += vertices[ edge->vertexNum[1] ];
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return bounds;
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}
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/*
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================
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idAASFileLocal::FaceBounds
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================
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*/
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idBounds idAASFileLocal::FaceBounds( int faceNum ) const {
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int i, edgeNum;
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const aasFace_t *face;
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const aasEdge_t *edge;
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idBounds bounds;
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face = &faces[faceNum];
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bounds.Clear();
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for ( i = 0; i < face->numEdges; i++ ) {
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edgeNum = edgeIndex[ face->firstEdge + i ];
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edge = &edges[ abs( edgeNum ) ];
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bounds.AddPoint( vertices[ edge->vertexNum[ INTSIGNBITSET(edgeNum) ] ] );
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}
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return bounds;
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}
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/*
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================
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idAASFileLocal::AreaBounds
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================
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*/
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idBounds idAASFileLocal::AreaBounds( int areaNum ) const {
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int i, faceNum;
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const aasArea_t *area;
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idBounds bounds;
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area = &areas[areaNum];
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bounds.Clear();
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for ( i = 0; i < area->numFaces; i++ ) {
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faceNum = faceIndex[area->firstFace + i];
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bounds += FaceBounds( abs(faceNum) );
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}
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return bounds;
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}
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/*
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============
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idAASFileLocal::PointAreaNum
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============
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*/
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int idAASFileLocal::PointAreaNum( const idVec3 &origin ) const {
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int nodeNum;
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const aasNode_t *node;
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nodeNum = 1;
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do {
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node = &nodes[nodeNum];
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if ( planeList[node->planeNum].Side( origin ) == PLANESIDE_BACK ) {
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nodeNum = node->children[1];
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}
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else {
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nodeNum = node->children[0];
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}
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if ( nodeNum < 0 ) {
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return -nodeNum;
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}
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} while( nodeNum );
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return 0;
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}
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/*
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============
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idAASFileLocal::PointReachableAreaNum
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============
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*/
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int idAASFileLocal::PointReachableAreaNum( const idVec3 &origin, const idBounds &searchBounds, const int areaFlags, const int excludeTravelFlags ) const {
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int areaList[32], areaNum, i;
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idVec3 start, end, pointList[32];
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aasTrace_t trace;
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idBounds bounds;
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float frac;
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start = origin;
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trace.areas = areaList;
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trace.points = pointList;
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trace.maxAreas = sizeof( areaList ) / sizeof( int );
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trace.getOutOfSolid = true;
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areaNum = PointAreaNum( start );
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if ( areaNum ) {
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if ( ( areas[areaNum].flags & areaFlags ) && ( ( areas[areaNum].travelFlags & excludeTravelFlags ) == 0 ) ) {
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return areaNum;
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}
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}
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else {
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// trace up
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end = start;
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end[2] += 32.0f;
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Trace( trace, start, end );
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if ( trace.numAreas >= 1 ) {
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if ( ( areas[0].flags & areaFlags ) && ( ( areas[0].travelFlags & excludeTravelFlags ) == 0 ) ) {
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return areaList[0];
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}
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start = pointList[0];
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start[2] += 1.0f;
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}
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}
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// trace down
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end = start;
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end[2] -= 32.0f;
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Trace( trace, start, end );
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if ( trace.lastAreaNum ) {
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if ( ( areas[trace.lastAreaNum].flags & areaFlags ) && ( ( areas[trace.lastAreaNum].travelFlags & excludeTravelFlags ) == 0 ) ) {
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return trace.lastAreaNum;
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}
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start = trace.endpos;
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}
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// expand bounds until an area is found
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for ( i = 1; i <= 12; i++ ) {
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frac = i * ( 1.0f / 12.0f );
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bounds[0] = origin + searchBounds[0] * frac;
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bounds[1] = origin + searchBounds[1] * frac;
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areaNum = BoundsReachableAreaNum( bounds, areaFlags, excludeTravelFlags );
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if ( areaNum && ( areas[areaNum].flags & areaFlags ) && ( ( areas[areaNum].travelFlags & excludeTravelFlags ) == 0 ) ) {
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return areaNum;
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}
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}
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return 0;
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}
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/*
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============
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idAASFileLocal::BoundsReachableAreaNum_r
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============
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*/
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int idAASFileLocal::BoundsReachableAreaNum_r( int nodeNum, const idBounds &bounds, const int areaFlags, const int excludeTravelFlags ) const {
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int res;
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const aasNode_t *node;
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while( nodeNum ) {
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if ( nodeNum < 0 ) {
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if ( ( areas[-nodeNum].flags & areaFlags ) && ( ( areas[-nodeNum].travelFlags & excludeTravelFlags ) == 0 ) ) {
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return -nodeNum;
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}
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return 0;
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}
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node = &nodes[nodeNum];
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res = bounds.PlaneSide( planeList[node->planeNum] );
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if ( res == PLANESIDE_BACK ) {
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nodeNum = node->children[1];
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}
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else if ( res == PLANESIDE_FRONT ) {
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nodeNum = node->children[0];
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}
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else {
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nodeNum = BoundsReachableAreaNum_r( node->children[1], bounds, areaFlags, excludeTravelFlags );
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if ( nodeNum ) {
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return nodeNum;
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}
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nodeNum = node->children[0];
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}
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}
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return 0;
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}
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/*
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============
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idAASFileLocal::BoundsReachableAreaNum
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============
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*/
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int idAASFileLocal::BoundsReachableAreaNum( const idBounds &bounds, const int areaFlags, const int excludeTravelFlags ) const {
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return BoundsReachableAreaNum_r( 1, bounds, areaFlags, excludeTravelFlags );
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}
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/*
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============
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idAASFileLocal::PushPointIntoAreaNum
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============
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*/
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void idAASFileLocal::PushPointIntoAreaNum( int areaNum, idVec3 &point ) const {
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int i, faceNum;
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const aasArea_t *area;
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const aasFace_t *face;
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area = &areas[areaNum];
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// push the point to the right side of all area face planes
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for ( i = 0; i < area->numFaces; i++ ) {
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faceNum = faceIndex[area->firstFace + i];
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face = &faces[abs( faceNum )];
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const idPlane &plane = planeList[face->planeNum ^ INTSIGNBITSET( faceNum )];
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float dist = plane.Distance( point );
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// project the point onto the face plane if it is on the wrong side
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if ( dist < 0.0f ) {
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point -= dist * plane.Normal();
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}
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}
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}
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/*
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============
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idAASFileLocal::Trace
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============
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*/
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#define TRACEPLANE_EPSILON 0.125f
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typedef struct aasTraceStack_s
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{
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idVec3 start;
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idVec3 end;
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int planeNum;
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int nodeNum;
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} aasTraceStack_t;
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bool idAASFileLocal::Trace( aasTrace_t &trace, const idVec3 &start, const idVec3 &end ) const {
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int side, nodeNum, tmpPlaneNum;
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double front, back, frac;
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idVec3 cur_start, cur_end, cur_mid, v1, v2;
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aasTraceStack_t tracestack[MAX_AAS_TREE_DEPTH];
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aasTraceStack_t *tstack_p;
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const aasNode_t *node;
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const idPlane *plane;
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trace.numAreas = 0;
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trace.lastAreaNum = 0;
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trace.blockingAreaNum = 0;
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tstack_p = tracestack;
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tstack_p->start = start;
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tstack_p->end = end;
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tstack_p->planeNum = 0;
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tstack_p->nodeNum = 1; //start with the root of the tree
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tstack_p++;
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while( 1 ) {
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tstack_p--;
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// if the trace stack is empty
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if ( tstack_p < tracestack ) {
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if ( !trace.lastAreaNum ) {
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// completely in solid
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trace.fraction = 0.0f;
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trace.endpos = start;
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}
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else {
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// nothing was hit
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trace.fraction = 1.0f;
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trace.endpos = end;
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}
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trace.planeNum = 0;
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return false;
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}
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// number of the current node to test the line against
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nodeNum = tstack_p->nodeNum;
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// if it is an area
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if ( nodeNum < 0) {
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// if can't enter the area
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if ( ( areas[-nodeNum].flags & trace.flags ) || ( areas[-nodeNum].travelFlags & trace.travelFlags ) ) {
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if ( !trace.lastAreaNum ) {
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trace.fraction = 0.0f;
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v1 = vec3_origin;
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} else {
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v1 = end - start;
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v2 = tstack_p->start - start;
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trace.fraction = v2.Length() / v1.Length();
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}
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trace.endpos = tstack_p->start;
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trace.blockingAreaNum = -nodeNum;
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trace.planeNum = tstack_p->planeNum;
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// always take the plane with normal facing towards the trace start
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plane = &planeList[trace.planeNum];
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if ( v1 * plane->Normal() > 0.0f ) {
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trace.planeNum ^= 1;
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}
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return true;
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}
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trace.lastAreaNum = -nodeNum;
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if ( trace.numAreas < trace.maxAreas ) {
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if ( trace.areas ) {
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trace.areas[trace.numAreas] = -nodeNum;
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}
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if ( trace.points ) {
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trace.points[trace.numAreas] = tstack_p->start;
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}
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trace.numAreas++;
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}
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continue;
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}
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// if it is a solid leaf
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if ( !nodeNum ) {
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if ( !trace.lastAreaNum ) {
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trace.fraction = 0.0f;
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v1 = vec3_origin;
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} else {
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v1 = end - start;
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v2 = tstack_p->start - start;
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trace.fraction = v2.Length() / v1.Length();
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}
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trace.endpos = tstack_p->start;
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trace.blockingAreaNum = 0; // hit solid leaf
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trace.planeNum = tstack_p->planeNum;
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// always take the plane with normal facing towards the trace start
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plane = &planeList[trace.planeNum];
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if ( v1 * plane->Normal() > 0.0f ) {
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trace.planeNum ^= 1;
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}
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if ( !trace.lastAreaNum && trace.getOutOfSolid ) {
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continue;
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}
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else {
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return true;
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}
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}
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// the node to test against
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node = &nodes[nodeNum];
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// start point of current line to test against node
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cur_start = tstack_p->start;
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// end point of the current line to test against node
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cur_end = tstack_p->end;
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// the current node plane
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plane = &planeList[node->planeNum];
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front = plane->Distance( cur_start );
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back = plane->Distance( cur_end );
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// if the whole to be traced line is totally at the front of this node
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// only go down the tree with the front child
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if ( front >= -ON_EPSILON && back >= -ON_EPSILON ) {
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// keep the current start and end point on the stack and go down the tree with the front child
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tstack_p->nodeNum = node->children[0];
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tstack_p++;
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if ( tstack_p >= &tracestack[MAX_AAS_TREE_DEPTH] ) {
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common->Error("idAASFileLocal::Trace: stack overflow\n" );
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return false;
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}
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}
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// if the whole to be traced line is totally at the back of this node
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// only go down the tree with the back child
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else if ( front < ON_EPSILON && back < ON_EPSILON ) {
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// keep the current start and end point on the stack and go down the tree with the back child
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tstack_p->nodeNum = node->children[1];
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tstack_p++;
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if ( tstack_p >= &tracestack[MAX_AAS_TREE_DEPTH] ) {
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common->Error("idAASFileLocal::Trace: stack overflow\n" );
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return false;
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}
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}
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// go down the tree both at the front and back of the node
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else {
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tmpPlaneNum = tstack_p->planeNum;
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// calculate the hit point with the node plane
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// put the cross point TRACEPLANE_EPSILON on the near side
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if (front < 0) {
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frac = (front + TRACEPLANE_EPSILON) / ( front - back );
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}
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else {
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frac = (front - TRACEPLANE_EPSILON) / ( front - back );
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}
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if (frac < 0) {
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frac = 0.001f; //0
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}
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else if (frac > 1) {
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frac = 0.999f; //1
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}
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cur_mid = cur_start + ( cur_end - cur_start ) * frac;
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// side the front part of the line is on
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side = front < 0;
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|
|
// first put the end part of the line on the stack (back side)
|
|
tstack_p->start = cur_mid;
|
|
tstack_p->planeNum = node->planeNum;
|
|
tstack_p->nodeNum = node->children[!side];
|
|
tstack_p++;
|
|
if ( tstack_p >= &tracestack[MAX_AAS_TREE_DEPTH] ) {
|
|
common->Error("idAASFileLocal::Trace: stack overflow\n" );
|
|
return false;
|
|
}
|
|
// now put the part near the start of the line on the stack so we will
|
|
// continue with that part first.
|
|
tstack_p->start = cur_start;
|
|
tstack_p->end = cur_mid;
|
|
tstack_p->planeNum = tmpPlaneNum;
|
|
tstack_p->nodeNum = node->children[side];
|
|
tstack_p++;
|
|
if ( tstack_p >= &tracestack[MAX_AAS_TREE_DEPTH] ) {
|
|
common->Error("idAASFileLocal::Trace: stack overflow\n" );
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idAASLocal::AreaContentsTravelFlags
|
|
============
|
|
*/
|
|
int idAASFileLocal::AreaContentsTravelFlags( int areaNum ) const {
|
|
if ( areas[areaNum].contents & AREACONTENTS_WATER ) {
|
|
return TFL_WATER;
|
|
}
|
|
return TFL_AIR;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idAASFileLocal::MaxTreeDepth_r
|
|
============
|
|
*/
|
|
void idAASFileLocal::MaxTreeDepth_r( int nodeNum, int &depth, int &maxDepth ) const {
|
|
const aasNode_t *node;
|
|
|
|
if ( nodeNum <= 0 ) {
|
|
return;
|
|
}
|
|
|
|
depth++;
|
|
if ( depth > maxDepth ) {
|
|
maxDepth = depth;
|
|
}
|
|
|
|
node = &nodes[nodeNum];
|
|
MaxTreeDepth_r( node->children[0], depth, maxDepth );
|
|
MaxTreeDepth_r( node->children[1], depth, maxDepth );
|
|
|
|
depth--;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idAASFileLocal::MaxTreeDepth
|
|
============
|
|
*/
|
|
int idAASFileLocal::MaxTreeDepth( void ) const {
|
|
int depth, maxDepth;
|
|
|
|
depth = maxDepth = 0;
|
|
MaxTreeDepth_r( 1, depth, maxDepth );
|
|
return maxDepth;
|
|
}
|