mirror of
https://github.com/id-Software/DOOM-3-BFG.git
synced 2024-12-02 17:02:17 +00:00
742 lines
20 KiB
C++
742 lines
20 KiB
C++
/*
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===========================================================================
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Doom 3 BFG Edition GPL Source Code
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Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
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Doom 3 BFG Edition 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 BFG Edition 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 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 BFG Edition 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 BFG Edition 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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/*
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===============================================================================
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Trace model vs. polygonal model collision detection.
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===============================================================================
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*/
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#pragma hdrstop
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#include "precompiled.h"
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#include "CollisionModel_local.h"
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#define CM_FILE_EXT "cm"
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#define CM_BINARYFILE_EXT "bcm"
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#define CM_FILEID "CM"
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#define CM_FILEVERSION "1.00"
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/*
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===============================================================================
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Writing of collision model file
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===============================================================================
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*/
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void CM_GetNodeBounds( idBounds* bounds, cm_node_t* node );
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int CM_GetNodeContents( cm_node_t* node );
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/*
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================
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idCollisionModelManagerLocal::WriteNodes
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================
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*/
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void idCollisionModelManagerLocal::WriteNodes( idFile* fp, cm_node_t* node )
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{
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fp->WriteFloatString( "\t( %d %f )\n", node->planeType, node->planeDist );
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if( node->planeType != -1 )
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{
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WriteNodes( fp, node->children[0] );
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WriteNodes( fp, node->children[1] );
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}
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}
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/*
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================
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idCollisionModelManagerLocal::CountPolygonMemory
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================
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*/
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int idCollisionModelManagerLocal::CountPolygonMemory( cm_node_t* node ) const
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{
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cm_polygonRef_t* pref;
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cm_polygon_t* p;
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int memory;
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memory = 0;
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for( pref = node->polygons; pref; pref = pref->next )
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{
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p = pref->p;
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if( p->checkcount == checkCount )
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{
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continue;
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}
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p->checkcount = checkCount;
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memory += sizeof( cm_polygon_t ) + ( p->numEdges - 1 ) * sizeof( p->edges[0] );
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}
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if( node->planeType != -1 )
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{
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memory += CountPolygonMemory( node->children[0] );
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memory += CountPolygonMemory( node->children[1] );
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}
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return memory;
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}
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/*
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================
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idCollisionModelManagerLocal::WritePolygons
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================
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*/
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void idCollisionModelManagerLocal::WritePolygons( idFile* fp, cm_node_t* node )
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{
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cm_polygonRef_t* pref;
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cm_polygon_t* p;
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int i;
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for( pref = node->polygons; pref; pref = pref->next )
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{
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p = pref->p;
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if( p->checkcount == checkCount )
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{
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continue;
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}
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p->checkcount = checkCount;
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fp->WriteFloatString( "\t%d (", p->numEdges );
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for( i = 0; i < p->numEdges; i++ )
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{
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fp->WriteFloatString( " %d", p->edges[i] );
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}
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fp->WriteFloatString( " ) ( %f %f %f ) %f", p->plane.Normal()[0], p->plane.Normal()[1], p->plane.Normal()[2], p->plane.Dist() );
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fp->WriteFloatString( " ( %f %f %f )", p->bounds[0][0], p->bounds[0][1], p->bounds[0][2] );
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fp->WriteFloatString( " ( %f %f %f )", p->bounds[1][0], p->bounds[1][1], p->bounds[1][2] );
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fp->WriteFloatString( " \"%s\"\n", p->material->GetName() );
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}
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if( node->planeType != -1 )
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{
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WritePolygons( fp, node->children[0] );
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WritePolygons( fp, node->children[1] );
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}
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}
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/*
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================
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idCollisionModelManagerLocal::CountBrushMemory
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================
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*/
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int idCollisionModelManagerLocal::CountBrushMemory( cm_node_t* node ) const
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{
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cm_brushRef_t* bref;
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cm_brush_t* b;
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int memory;
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memory = 0;
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for( bref = node->brushes; bref; bref = bref->next )
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{
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b = bref->b;
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if( b->checkcount == checkCount )
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{
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continue;
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}
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b->checkcount = checkCount;
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memory += sizeof( cm_brush_t ) + ( b->numPlanes - 1 ) * sizeof( b->planes[0] );
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}
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if( node->planeType != -1 )
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{
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memory += CountBrushMemory( node->children[0] );
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memory += CountBrushMemory( node->children[1] );
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}
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return memory;
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}
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/*
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================
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idCollisionModelManagerLocal::WriteBrushes
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================
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*/
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void idCollisionModelManagerLocal::WriteBrushes( idFile* fp, cm_node_t* node )
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{
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cm_brushRef_t* bref;
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cm_brush_t* b;
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int i;
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for( bref = node->brushes; bref; bref = bref->next )
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{
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b = bref->b;
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if( b->checkcount == checkCount )
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{
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continue;
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}
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b->checkcount = checkCount;
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fp->WriteFloatString( "\t%d {\n", b->numPlanes );
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for( i = 0; i < b->numPlanes; i++ )
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{
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fp->WriteFloatString( "\t\t( %f %f %f ) %f\n", b->planes[i].Normal()[0], b->planes[i].Normal()[1], b->planes[i].Normal()[2], b->planes[i].Dist() );
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}
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fp->WriteFloatString( "\t} ( %f %f %f )", b->bounds[0][0], b->bounds[0][1], b->bounds[0][2] );
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fp->WriteFloatString( " ( %f %f %f ) \"%s\"\n", b->bounds[1][0], b->bounds[1][1], b->bounds[1][2], StringFromContents( b->contents ) );
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}
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if( node->planeType != -1 )
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{
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WriteBrushes( fp, node->children[0] );
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WriteBrushes( fp, node->children[1] );
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}
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}
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/*
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================
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idCollisionModelManagerLocal::WriteCollisionModel
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================
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*/
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void idCollisionModelManagerLocal::WriteCollisionModel( idFile* fp, cm_model_t* model )
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{
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int i, polygonMemory, brushMemory;
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fp->WriteFloatString( "collisionModel \"%s\" {\n", model->name.c_str() );
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// vertices
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fp->WriteFloatString( "\tvertices { /* numVertices = */ %d\n", model->numVertices );
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for( i = 0; i < model->numVertices; i++ )
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{
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fp->WriteFloatString( "\t/* %d */ ( %f %f %f )\n", i, model->vertices[i].p[0], model->vertices[i].p[1], model->vertices[i].p[2] );
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}
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fp->WriteFloatString( "\t}\n" );
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// edges
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fp->WriteFloatString( "\tedges { /* numEdges = */ %d\n", model->numEdges );
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for( i = 0; i < model->numEdges; i++ )
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{
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fp->WriteFloatString( "\t/* %d */ ( %d %d ) %d %d\n", i, model->edges[i].vertexNum[0], model->edges[i].vertexNum[1], model->edges[i].internal, model->edges[i].numUsers );
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}
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fp->WriteFloatString( "\t}\n" );
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// nodes
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fp->WriteFloatString( "\tnodes {\n" );
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WriteNodes( fp, model->node );
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fp->WriteFloatString( "\t}\n" );
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// polygons
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checkCount++;
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polygonMemory = CountPolygonMemory( model->node );
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fp->WriteFloatString( "\tpolygons /* polygonMemory = */ %d {\n", polygonMemory );
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checkCount++;
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WritePolygons( fp, model->node );
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fp->WriteFloatString( "\t}\n" );
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// brushes
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checkCount++;
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brushMemory = CountBrushMemory( model->node );
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fp->WriteFloatString( "\tbrushes /* brushMemory = */ %d {\n", brushMemory );
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checkCount++;
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WriteBrushes( fp, model->node );
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fp->WriteFloatString( "\t}\n" );
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// closing brace
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fp->WriteFloatString( "}\n" );
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}
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/*
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================
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idCollisionModelManagerLocal::WriteCollisionModelsToFile
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================
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*/
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void idCollisionModelManagerLocal::WriteCollisionModelsToFile( const char* filename, int firstModel, int lastModel, unsigned int mapFileCRC )
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{
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int i;
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idFile* fp;
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idStr name;
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name = filename;
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name.SetFileExtension( CM_FILE_EXT );
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common->Printf( "writing %s\n", name.c_str() );
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fp = fileSystem->OpenFileWrite( name, "fs_basepath" );
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if( !fp )
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{
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common->Warning( "idCollisionModelManagerLocal::WriteCollisionModelsToFile: Error opening file %s\n", name.c_str() );
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return;
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}
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// write file id and version
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fp->WriteFloatString( "%s \"%s\"\n\n", CM_FILEID, CM_FILEVERSION );
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// write the map file crc
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fp->WriteFloatString( "%u\n\n", mapFileCRC );
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// write the collision models
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for( i = firstModel; i < lastModel; i++ )
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{
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WriteCollisionModel( fp, models[ i ] );
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}
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fileSystem->CloseFile( fp );
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}
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/*
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================
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idCollisionModelManagerLocal::WriteCollisionModelForMapEntity
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================
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*/
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bool idCollisionModelManagerLocal::WriteCollisionModelForMapEntity( const idMapEntity* mapEnt, const char* filename, const bool testTraceModel )
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{
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idFile* fp;
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idStr name;
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cm_model_t* model;
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SetupHash();
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model = CollisionModelForMapEntity( mapEnt );
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model->name = filename;
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name = filename;
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name.SetFileExtension( CM_FILE_EXT );
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common->Printf( "writing %s\n", name.c_str() );
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fp = fileSystem->OpenFileWrite( name, "fs_basepath" );
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if( !fp )
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{
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common->Printf( "idCollisionModelManagerLocal::WriteCollisionModelForMapEntity: Error opening file %s\n", name.c_str() );
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FreeModel( model );
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return false;
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}
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// write file id and version
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fp->WriteFloatString( "%s \"%s\"\n\n", CM_FILEID, CM_FILEVERSION );
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// write the map file crc
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fp->WriteFloatString( "%u\n\n", 0 );
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// write the collision model
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WriteCollisionModel( fp, model );
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fileSystem->CloseFile( fp );
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if( testTraceModel )
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{
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idTraceModel trm;
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TrmFromModel( model, trm );
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}
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FreeModel( model );
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return true;
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}
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/*
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===============================================================================
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Loading of collision model file
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===============================================================================
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*/
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/*
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================
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idCollisionModelManagerLocal::ParseVertices
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================
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*/
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void idCollisionModelManagerLocal::ParseVertices( idLexer* src, cm_model_t* model )
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{
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int i;
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src->ExpectTokenString( "{" );
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model->numVertices = src->ParseInt();
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model->maxVertices = model->numVertices;
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model->vertices = ( cm_vertex_t* ) Mem_ClearedAlloc( model->maxVertices * sizeof( cm_vertex_t ), TAG_COLLISION );
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for( i = 0; i < model->numVertices; i++ )
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{
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src->Parse1DMatrix( 3, model->vertices[i].p.ToFloatPtr() );
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model->vertices[i].side = 0;
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model->vertices[i].sideSet = 0;
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model->vertices[i].checkcount = 0;
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}
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src->ExpectTokenString( "}" );
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}
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/*
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================
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idCollisionModelManagerLocal::ParseEdges
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================
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*/
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void idCollisionModelManagerLocal::ParseEdges( idLexer* src, cm_model_t* model )
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{
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int i;
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src->ExpectTokenString( "{" );
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model->numEdges = src->ParseInt();
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model->maxEdges = model->numEdges;
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model->edges = ( cm_edge_t* ) Mem_ClearedAlloc( model->maxEdges * sizeof( cm_edge_t ), TAG_COLLISION );
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for( i = 0; i < model->numEdges; i++ )
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{
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src->ExpectTokenString( "(" );
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model->edges[i].vertexNum[0] = src->ParseInt();
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model->edges[i].vertexNum[1] = src->ParseInt();
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src->ExpectTokenString( ")" );
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model->edges[i].side = 0;
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model->edges[i].sideSet = 0;
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model->edges[i].internal = src->ParseInt();
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model->edges[i].numUsers = src->ParseInt();
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model->edges[i].normal = vec3_origin;
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model->edges[i].checkcount = 0;
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model->numInternalEdges += model->edges[i].internal;
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}
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src->ExpectTokenString( "}" );
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}
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/*
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================
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idCollisionModelManagerLocal::ParseNodes
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================
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*/
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cm_node_t* idCollisionModelManagerLocal::ParseNodes( idLexer* src, cm_model_t* model, cm_node_t* parent )
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{
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cm_node_t* node;
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model->numNodes++;
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node = AllocNode( model, model->numNodes < NODE_BLOCK_SIZE_SMALL ? NODE_BLOCK_SIZE_SMALL : NODE_BLOCK_SIZE_LARGE );
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node->brushes = NULL;
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node->polygons = NULL;
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node->parent = parent;
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src->ExpectTokenString( "(" );
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node->planeType = src->ParseInt();
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node->planeDist = src->ParseFloat();
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src->ExpectTokenString( ")" );
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if( node->planeType != -1 )
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{
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node->children[0] = ParseNodes( src, model, node );
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node->children[1] = ParseNodes( src, model, node );
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}
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return node;
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}
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/*
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================
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idCollisionModelManagerLocal::ParsePolygons
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================
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*/
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void idCollisionModelManagerLocal::ParsePolygons( idLexer* src, cm_model_t* model )
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{
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cm_polygon_t* p;
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int i, numEdges;
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idVec3 normal;
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idToken token;
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if( src->CheckTokenType( TT_NUMBER, 0, &token ) )
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{
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model->polygonBlock = ( cm_polygonBlock_t* ) Mem_ClearedAlloc( sizeof( cm_polygonBlock_t ) + token.GetIntValue(), TAG_COLLISION );
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model->polygonBlock->bytesRemaining = token.GetIntValue();
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model->polygonBlock->next = ( ( byte* ) model->polygonBlock ) + sizeof( cm_polygonBlock_t );
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}
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src->ExpectTokenString( "{" );
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while( !src->CheckTokenString( "}" ) )
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{
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// parse polygon
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numEdges = src->ParseInt();
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p = AllocPolygon( model, numEdges );
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p->numEdges = numEdges;
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src->ExpectTokenString( "(" );
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for( i = 0; i < p->numEdges; i++ )
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{
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p->edges[i] = src->ParseInt();
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}
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src->ExpectTokenString( ")" );
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src->Parse1DMatrix( 3, normal.ToFloatPtr() );
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p->plane.SetNormal( normal );
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p->plane.SetDist( src->ParseFloat() );
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src->Parse1DMatrix( 3, p->bounds[0].ToFloatPtr() );
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src->Parse1DMatrix( 3, p->bounds[1].ToFloatPtr() );
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src->ExpectTokenType( TT_STRING, 0, &token );
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// get material
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p->material = declManager->FindMaterial( token );
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p->contents = p->material->GetContentFlags();
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p->checkcount = 0;
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// filter polygon into tree
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R_FilterPolygonIntoTree( model, model->node, NULL, p );
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}
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}
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/*
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================
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idCollisionModelManagerLocal::ParseBrushes
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================
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*/
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void idCollisionModelManagerLocal::ParseBrushes( idLexer* src, cm_model_t* model )
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{
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cm_brush_t* b;
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int i, numPlanes;
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idVec3 normal;
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idToken token;
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if( src->CheckTokenType( TT_NUMBER, 0, &token ) )
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{
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model->brushBlock = ( cm_brushBlock_t* ) Mem_ClearedAlloc( sizeof( cm_brushBlock_t ) + token.GetIntValue(), TAG_COLLISION );
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model->brushBlock->bytesRemaining = token.GetIntValue();
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model->brushBlock->next = ( ( byte* ) model->brushBlock ) + sizeof( cm_brushBlock_t );
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}
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src->ExpectTokenString( "{" );
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while( !src->CheckTokenString( "}" ) )
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{
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// parse brush
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numPlanes = src->ParseInt();
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b = AllocBrush( model, numPlanes );
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b->numPlanes = numPlanes;
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src->ExpectTokenString( "{" );
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for( i = 0; i < b->numPlanes; i++ )
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{
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src->Parse1DMatrix( 3, normal.ToFloatPtr() );
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b->planes[i].SetNormal( normal );
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b->planes[i].SetDist( src->ParseFloat() );
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}
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src->ExpectTokenString( "}" );
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src->Parse1DMatrix( 3, b->bounds[0].ToFloatPtr() );
|
|
src->Parse1DMatrix( 3, b->bounds[1].ToFloatPtr() );
|
|
src->ReadToken( &token );
|
|
if( token.type == TT_NUMBER )
|
|
{
|
|
b->contents = token.GetIntValue(); // old .cm files use a single integer
|
|
}
|
|
else
|
|
{
|
|
b->contents = ContentsFromString( token );
|
|
}
|
|
b->checkcount = 0;
|
|
b->primitiveNum = 0;
|
|
b->material = NULL;
|
|
// filter brush into tree
|
|
R_FilterBrushIntoTree( model, model->node, NULL, b );
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCollisionModelManagerLocal::ParseCollisionModel
|
|
================
|
|
*/
|
|
cm_model_t* idCollisionModelManagerLocal::ParseCollisionModel( idLexer* src )
|
|
{
|
|
|
|
cm_model_t* model;
|
|
idToken token;
|
|
|
|
if( numModels >= MAX_SUBMODELS )
|
|
{
|
|
common->Error( "LoadModel: no free slots" );
|
|
return NULL;
|
|
}
|
|
model = AllocModel();
|
|
models[numModels ] = model;
|
|
numModels++;
|
|
// parse the file
|
|
src->ExpectTokenType( TT_STRING, 0, &token );
|
|
model->name = token;
|
|
src->ExpectTokenString( "{" );
|
|
while( !src->CheckTokenString( "}" ) )
|
|
{
|
|
|
|
src->ReadToken( &token );
|
|
|
|
if( token == "vertices" )
|
|
{
|
|
ParseVertices( src, model );
|
|
continue;
|
|
}
|
|
|
|
if( token == "edges" )
|
|
{
|
|
ParseEdges( src, model );
|
|
continue;
|
|
}
|
|
|
|
if( token == "nodes" )
|
|
{
|
|
src->ExpectTokenString( "{" );
|
|
model->node = ParseNodes( src, model, NULL );
|
|
src->ExpectTokenString( "}" );
|
|
continue;
|
|
}
|
|
|
|
if( token == "polygons" )
|
|
{
|
|
ParsePolygons( src, model );
|
|
continue;
|
|
}
|
|
|
|
if( token == "brushes" )
|
|
{
|
|
ParseBrushes( src, model );
|
|
continue;
|
|
}
|
|
|
|
src->Error( "ParseCollisionModel: bad token \"%s\"", token.c_str() );
|
|
}
|
|
// calculate edge normals
|
|
checkCount++;
|
|
CalculateEdgeNormals( model, model->node );
|
|
// get model bounds from brush and polygon bounds
|
|
CM_GetNodeBounds( &model->bounds, model->node );
|
|
// get model contents
|
|
model->contents = CM_GetNodeContents( model->node );
|
|
// total memory used by this model
|
|
model->usedMemory = model->numVertices * sizeof( cm_vertex_t ) +
|
|
model->numEdges * sizeof( cm_edge_t ) +
|
|
model->polygonMemory +
|
|
model->brushMemory +
|
|
model->numNodes * sizeof( cm_node_t ) +
|
|
model->numPolygonRefs * sizeof( cm_polygonRef_t ) +
|
|
model->numBrushRefs * sizeof( cm_brushRef_t );
|
|
|
|
return model;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCollisionModelManagerLocal::LoadCollisionModelFile
|
|
================
|
|
*/
|
|
bool idCollisionModelManagerLocal::LoadCollisionModelFile( const char* name, unsigned int mapFileCRC )
|
|
{
|
|
idToken token;
|
|
idLexer* src;
|
|
unsigned int crc;
|
|
|
|
// load it
|
|
idStrStatic< MAX_OSPATH > fileName = name;
|
|
|
|
// check for generated file
|
|
idStrStatic< MAX_OSPATH > generatedFileName = fileName;
|
|
generatedFileName.Insert( "generated/", 0 );
|
|
generatedFileName.SetFileExtension( CM_BINARYFILE_EXT );
|
|
|
|
// if we are reloading the same map, check the timestamp
|
|
// and try to skip all the work
|
|
ID_TIME_T currentTimeStamp = fileSystem->GetTimestamp( fileName );
|
|
|
|
// see if we have a generated version of this
|
|
bool loaded = false;
|
|
idFileLocal file( fileSystem->OpenFileReadMemory( generatedFileName ) );
|
|
if( file != NULL )
|
|
{
|
|
int numEntries = 0;
|
|
file->ReadBig( numEntries );
|
|
file->ReadString( mapName );
|
|
file->ReadBig( crc );
|
|
idStrStatic< 32 > fileID;
|
|
idStrStatic< 32 > fileVersion;
|
|
file->ReadString( fileID );
|
|
file->ReadString( fileVersion );
|
|
if( fileID == CM_FILEID && fileVersion == CM_FILEVERSION && crc == mapFileCRC && numEntries > 0 )
|
|
{
|
|
for( int i = 0; i < numEntries; i++ )
|
|
{
|
|
cm_model_t* model = LoadBinaryModelFromFile( file, currentTimeStamp );
|
|
models[ numModels ] = model;
|
|
numModels++;
|
|
}
|
|
loaded = true;
|
|
}
|
|
}
|
|
|
|
if( !loaded )
|
|
{
|
|
|
|
fileName.SetFileExtension( CM_FILE_EXT );
|
|
src = new( TAG_COLLISION ) idLexer( fileName );
|
|
src->SetFlags( LEXFL_NOSTRINGCONCAT | LEXFL_NODOLLARPRECOMPILE );
|
|
if( !src->IsLoaded() )
|
|
{
|
|
delete src;
|
|
return false;
|
|
}
|
|
|
|
int numEntries = 0;
|
|
idFileLocal outputFile( fileSystem->OpenFileWrite( generatedFileName, "fs_basepath" ) );
|
|
if( outputFile != NULL )
|
|
{
|
|
outputFile->WriteBig( numEntries );
|
|
outputFile->WriteString( mapName );
|
|
outputFile->WriteBig( mapFileCRC );
|
|
outputFile->WriteString( CM_FILEID );
|
|
outputFile->WriteString( CM_FILEVERSION );
|
|
}
|
|
|
|
if( !src->ExpectTokenString( CM_FILEID ) )
|
|
{
|
|
common->Warning( "%s is not an CM file.", fileName.c_str() );
|
|
delete src;
|
|
return false;
|
|
}
|
|
|
|
if( !src->ReadToken( &token ) || token != CM_FILEVERSION )
|
|
{
|
|
common->Warning( "%s has version %s instead of %s", fileName.c_str(), token.c_str(), CM_FILEVERSION );
|
|
delete src;
|
|
return false;
|
|
}
|
|
|
|
if( !src->ExpectTokenType( TT_NUMBER, TT_INTEGER, &token ) )
|
|
{
|
|
common->Warning( "%s has no map file CRC", fileName.c_str() );
|
|
delete src;
|
|
return false;
|
|
}
|
|
|
|
crc = token.GetUnsignedLongValue();
|
|
if( mapFileCRC && crc != mapFileCRC )
|
|
{
|
|
common->Printf( "%s is out of date\n", fileName.c_str() );
|
|
delete src;
|
|
return false;
|
|
}
|
|
|
|
// parse the file
|
|
while( 1 )
|
|
{
|
|
if( !src->ReadToken( &token ) )
|
|
{
|
|
break;
|
|
}
|
|
|
|
if( token == "collisionModel" )
|
|
{
|
|
cm_model_t* model = ParseCollisionModel( src );
|
|
if( model == NULL )
|
|
{
|
|
delete src;
|
|
return false;
|
|
}
|
|
if( outputFile != NULL )
|
|
{
|
|
WriteBinaryModelToFile( model, outputFile, currentTimeStamp );
|
|
numEntries++;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
src->Error( "idCollisionModelManagerLocal::LoadCollisionModelFile: bad token \"%s\"", token.c_str() );
|
|
}
|
|
delete src;
|
|
if( outputFile != NULL )
|
|
{
|
|
outputFile->Seek( 0, FS_SEEK_SET );
|
|
outputFile->WriteBig( numEntries );
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|