375 lines
8.2 KiB
C++
375 lines
8.2 KiB
C++
/* -------------------------------------------------------------------------------
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Copyright (C) 1999-2007 id Software, Inc. and contributors.
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For a list of contributors, see the accompanying CONTRIBUTORS file.
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This file is part of GtkRadiant.
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GtkRadiant 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 2 of the License, or
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(at your option) any later version.
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GtkRadiant 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 GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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----------------------------------------------------------------------------------
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This code has been altered significantly from its original form, to support
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several games based on the Quake III Arena engine, in the form of "Q3Map2."
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------------------------------------------------------------------------------- */
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/* dependencies */
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#include "q3map2.h"
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/*
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==============================================================================
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PORTAL FILE GENERATION
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Save out name.prt for qvis to read
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==============================================================================
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*/
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#define PORTALFILE "PRT1"
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FILE *pf;
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int num_visclusters; // clusters the player can be in
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int num_visportals;
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int num_solidfaces;
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void WriteFloat( FILE *f, float v ){
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if ( fabs( v - std::rint( v ) ) < 0.001 ) {
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fprintf( f, "%li ", std::lrint( v ) );
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}
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else{
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fprintf( f, "%f ", v );
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}
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}
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void CountVisportals_r( node_t *node ){
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int s;
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// decision node
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if ( node->planenum != PLANENUM_LEAF ) {
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CountVisportals_r( node->children[0] );
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CountVisportals_r( node->children[1] );
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return;
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}
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if ( node->opaque ) {
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return;
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}
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for ( const portal_t *p = node->portals; p; p = p->next[s] )
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{
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const winding_t *w = p->winding;
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s = ( p->nodes[1] == node );
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if ( w && p->nodes[0] == node ) {
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if ( !PortalPassable( p ) ) {
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continue;
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}
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if ( p->nodes[0]->cluster == p->nodes[1]->cluster ) {
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continue;
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}
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++num_visportals;
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}
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}
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}
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/*
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=================
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WritePortalFile_r
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=================
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*/
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void WritePortalFile_r( node_t *node ){
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int s, flags;
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// decision node
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if ( node->planenum != PLANENUM_LEAF ) {
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WritePortalFile_r( node->children[0] );
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WritePortalFile_r( node->children[1] );
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return;
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}
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if ( node->opaque ) {
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return;
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}
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for (const portal_t *p = node->portals; p; p = p->next[s] )
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{
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const winding_t *w = p->winding;
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s = ( p->nodes[1] == node );
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if ( w && p->nodes[0] == node ) {
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if ( !PortalPassable( p ) ) {
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continue;
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}
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if ( p->nodes[0]->cluster == p->nodes[1]->cluster ) {
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continue;
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}
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--num_visportals;
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// write out to the file
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// sometimes planes get turned around when they are very near
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// the changeover point between different axis. interpret the
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// plane the same way vis will, and flip the side orders if needed
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// FIXME: is this still relevant?
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if ( vector3_dot( p->plane.normal(), WindingPlane( *w ).normal() ) < 0.99 ) { // backwards...
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fprintf( pf, "%zu %i %i ", w->size(), p->nodes[1]->cluster, p->nodes[0]->cluster );
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}
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else{
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fprintf( pf, "%zu %i %i ", w->size(), p->nodes[0]->cluster, p->nodes[1]->cluster );
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}
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flags = 0;
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/* ydnar: added this change to make antiportals work */
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if( p->compileFlags & C_HINT ) {
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flags |= 1;
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}
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/* divVerent: I want farplanedist to not kill skybox. So... */
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if( p->compileFlags & C_SKY ) {
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flags |= 2;
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}
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fprintf( pf, "%d ", flags );
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/* write the winding */
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for ( const Vector3 point : *w )
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{
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fprintf( pf, "(" );
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WriteFloat( pf, point.x() );
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WriteFloat( pf, point.y() );
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WriteFloat( pf, point.z() );
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fprintf( pf, ") " );
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}
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fprintf( pf, "\n" );
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}
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}
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}
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void CountSolidFaces_r( node_t *node ){
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int s;
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// decision node
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if ( node->planenum != PLANENUM_LEAF ) {
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CountSolidFaces_r( node->children[0] );
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CountSolidFaces_r( node->children[1] );
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return;
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}
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if ( node->opaque ) {
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return;
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}
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for ( const portal_t *p = node->portals; p; p = p->next[s] )
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{
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const winding_t *w = p->winding;
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s = ( p->nodes[1] == node );
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if ( w ) {
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if ( PortalPassable( p ) ) {
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continue;
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}
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if ( p->nodes[0]->cluster == p->nodes[1]->cluster ) {
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continue;
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}
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// write out to the file
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++num_solidfaces;
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}
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}
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}
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/*
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=================
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WriteFaceFile_r
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=================
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*/
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void WriteFaceFile_r( node_t *node ){
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int s;
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// decision node
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if ( node->planenum != PLANENUM_LEAF ) {
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WriteFaceFile_r( node->children[0] );
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WriteFaceFile_r( node->children[1] );
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return;
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}
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if ( node->opaque ) {
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return;
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}
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for ( const portal_t *p = node->portals; p; p = p->next[s] )
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{
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const winding_t *w = p->winding;
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s = ( p->nodes[1] == node );
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if ( w ) {
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if ( PortalPassable( p ) ) {
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continue;
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}
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if ( p->nodes[0]->cluster == p->nodes[1]->cluster ) {
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continue;
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}
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// write out to the file
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if ( p->nodes[0] == node ) {
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fprintf( pf, "%zu %i ", w->size(), p->nodes[0]->cluster );
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for ( const Vector3& point : *w )
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{
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fprintf( pf, "(" );
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WriteFloat( pf, point.x() );
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WriteFloat( pf, point.y() );
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WriteFloat( pf, point.z() );
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fprintf( pf, ") " );
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}
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fprintf( pf, "\n" );
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}
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else
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{
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fprintf( pf, "%zu %i ", w->size(), p->nodes[1]->cluster );
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for ( winding_t::const_reverse_iterator point = w->crbegin(); point != w->crend(); ++point )
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{
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fprintf( pf, "(" );
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WriteFloat( pf, point->x() );
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WriteFloat( pf, point->y() );
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WriteFloat( pf, point->z() );
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fprintf( pf, ") " );
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}
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fprintf( pf, "\n" );
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}
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}
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}
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}
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/*
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================
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NumberLeafs_r
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================
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*/
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void NumberLeafs_r( node_t *node, int c ){
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#if 0
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portal_t *p;
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#endif
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if ( node->planenum != PLANENUM_LEAF ) {
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// decision node
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node->cluster = -99;
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if ( node->has_structural_children ) {
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#if 0
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if ( c >= 0 ) {
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Sys_FPrintf( SYS_ERR, "THIS CANNOT HAPPEN\n" );
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}
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#endif
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NumberLeafs_r( node->children[0], c );
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NumberLeafs_r( node->children[1], c );
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}
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else
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{
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if ( c < 0 ) {
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c = num_visclusters++;
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}
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NumberLeafs_r( node->children[0], c );
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NumberLeafs_r( node->children[1], c );
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}
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return;
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}
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node->area = -1;
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if ( node->opaque ) {
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// solid block, viewpoint never inside
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node->cluster = -1;
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return;
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}
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if ( c < 0 ) {
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c = num_visclusters++;
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}
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node->cluster = c;
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#if 0
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// count the portals
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for ( p = node->portals; p; )
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{
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if ( p->nodes[0] == node ) { // only write out from first leaf
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if ( PortalPassable( p ) ) {
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num_visportals++;
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}
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else{
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num_solidfaces++;
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}
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p = p->next[0];
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}
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else
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{
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if ( !PortalPassable( p ) ) {
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num_solidfaces++;
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}
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p = p->next[1];
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}
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}
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#endif
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}
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/*
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================
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NumberClusters
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================
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*/
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void NumberClusters( tree_t *tree ) {
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num_visclusters = 0;
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num_visportals = 0;
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num_solidfaces = 0;
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Sys_FPrintf( SYS_VRB, "--- NumberClusters ---\n" );
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// set the cluster field in every leaf and count the total number of portals
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NumberLeafs_r( tree->headnode, -1 );
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CountVisportals_r( tree->headnode );
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CountSolidFaces_r( tree->headnode );
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Sys_FPrintf( SYS_VRB, "%9d visclusters\n", num_visclusters );
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Sys_FPrintf( SYS_VRB, "%9d visportals\n", num_visportals );
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Sys_FPrintf( SYS_VRB, "%9d solidfaces\n", num_solidfaces );
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}
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/*
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================
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WritePortalFile
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================
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*/
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void WritePortalFile( tree_t *tree ){
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Sys_FPrintf( SYS_VRB, "--- WritePortalFile ---\n" );
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// write the file
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auto filename = StringOutputStream( 256 )( source, ".prt" );
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Sys_Printf( "writing %s\n", filename.c_str() );
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pf = SafeOpenWrite( filename, "wt" );
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fprintf( pf, "%s\n", PORTALFILE );
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fprintf( pf, "%i\n", num_visclusters );
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fprintf( pf, "%i\n", num_visportals );
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fprintf( pf, "%i\n", num_solidfaces );
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WritePortalFile_r( tree->headnode );
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WriteFaceFile_r( tree->headnode );
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fclose( pf );
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}
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