--- /dev/null
+/*
+===========================================================================
+Copyright (C) 1997-2006 Id Software, Inc.
+
+This file is part of Quake 2 Tools source code.
+
+Quake 2 Tools source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake 2 Tools source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Quake 2 Tools source code; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+===========================================================================
+*/
+
+#include "qbsp.h"
+
+/*
+==============================================================================
+
+PORTAL FILE GENERATION
+
+Save out name.prt for qvis to read
+==============================================================================
+*/
+
+
+#define PORTALFILE "PRT1"
+
+FILE *pf;
+int num_visclusters; // clusters the player can be in
+int num_visportals;
+
+void WriteFloat (FILE *f, vec_t v)
+{
+ if ( fabs(v - Q_rint(v)) < 0.001 )
+ fprintf (f,"%i ",(int)Q_rint(v));
+ else
+ fprintf (f,"%f ",v);
+}
+
+/*
+=================
+WritePortalFile_r
+=================
+*/
+void WritePortalFile_r (node_t *node)
+{
+ int i, s;
+ portal_t *p;
+ winding_t *w;
+ vec3_t normal;
+ vec_t dist;
+
+ // decision node
+ if (node->planenum != PLANENUM_LEAF && !node->detail_seperator)
+ {
+ WritePortalFile_r (node->children[0]);
+ WritePortalFile_r (node->children[1]);
+ return;
+ }
+
+ if (node->contents & CONTENTS_SOLID)
+ return;
+
+ for (p = node->portals ; p ; p=p->next[s])
+ {
+ w = p->winding;
+ s = (p->nodes[1] == node);
+ if (w && p->nodes[0] == node)
+ {
+ if (!Portal_VisFlood (p))
+ continue;
+ // write out to the file
+
+ // sometimes planes get turned around when they are very near
+ // the changeover point between different axis. interpret the
+ // plane the same way vis will, and flip the side orders if needed
+ // FIXME: is this still relevent?
+ WindingPlane (w, normal, &dist);
+ if ( DotProduct (p->plane.normal, normal) < 0.99 )
+ { // backwards...
+ fprintf (pf,"%i %i %i ",w->numpoints, p->nodes[1]->cluster, p->nodes[0]->cluster);
+ }
+ else
+ fprintf (pf,"%i %i %i ",w->numpoints, p->nodes[0]->cluster, p->nodes[1]->cluster);
+ for (i=0 ; i<w->numpoints ; i++)
+ {
+ fprintf (pf,"(");
+ WriteFloat (pf, w->p[i][0]);
+ WriteFloat (pf, w->p[i][1]);
+ WriteFloat (pf, w->p[i][2]);
+ fprintf (pf,") ");
+ }
+ fprintf (pf,"\n");
+ }
+ }
+
+}
+
+/*
+================
+FillLeafNumbers_r
+
+All of the leafs under node will have the same cluster
+================
+*/
+void FillLeafNumbers_r (node_t *node, int num)
+{
+ if (node->planenum == PLANENUM_LEAF)
+ {
+ if (node->contents & CONTENTS_SOLID)
+ node->cluster = -1;
+ else
+ node->cluster = num;
+ return;
+ }
+ node->cluster = num;
+ FillLeafNumbers_r (node->children[0], num);
+ FillLeafNumbers_r (node->children[1], num);
+}
+
+/*
+================
+NumberLeafs_r
+================
+*/
+void NumberLeafs_r (node_t *node)
+{
+ portal_t *p;
+
+ if (node->planenum != PLANENUM_LEAF && !node->detail_seperator)
+ { // decision node
+ node->cluster = -99;
+ NumberLeafs_r (node->children[0]);
+ NumberLeafs_r (node->children[1]);
+ return;
+ }
+
+ // either a leaf or a detail cluster
+
+ if ( node->contents & CONTENTS_SOLID )
+ { // solid block, viewpoint never inside
+ node->cluster = -1;
+ return;
+ }
+
+ FillLeafNumbers_r (node, num_visclusters);
+ num_visclusters++;
+
+ // count the portals
+ for (p = node->portals ; p ; )
+ {
+ if (p->nodes[0] == node) // only write out from first leaf
+ {
+ if (Portal_VisFlood (p))
+ num_visportals++;
+ p = p->next[0];
+ }
+ else
+ p = p->next[1];
+ }
+
+}
+
+
+/*
+================
+CreateVisPortals_r
+================
+*/
+void CreateVisPortals_r (node_t *node)
+{
+ // stop as soon as we get to a detail_seperator, which
+ // means that everything below is in a single cluster
+ if (node->planenum == PLANENUM_LEAF || node->detail_seperator )
+ return;
+
+ MakeNodePortal (node);
+ SplitNodePortals (node);
+
+ CreateVisPortals_r (node->children[0]);
+ CreateVisPortals_r (node->children[1]);
+}
+
+/*
+================
+FinishVisPortals_r
+================
+*/
+void FinishVisPortals2_r (node_t *node)
+{
+ if (node->planenum == PLANENUM_LEAF)
+ return;
+
+ MakeNodePortal (node);
+ SplitNodePortals (node);
+
+ FinishVisPortals2_r (node->children[0]);
+ FinishVisPortals2_r (node->children[1]);
+}
+
+void FinishVisPortals_r (node_t *node)
+{
+ if (node->planenum == PLANENUM_LEAF)
+ return;
+
+ if (node->detail_seperator)
+ {
+ FinishVisPortals2_r (node);
+ return;
+ }
+
+ FinishVisPortals_r (node->children[0]);
+ FinishVisPortals_r (node->children[1]);
+}
+
+
+int clusterleaf;
+void SaveClusters_r (node_t *node)
+{
+ if (node->planenum == PLANENUM_LEAF)
+ {
+ dleafs[clusterleaf++].cluster = node->cluster;
+ return;
+ }
+ SaveClusters_r (node->children[0]);
+ SaveClusters_r (node->children[1]);
+}
+
+/*
+================
+WritePortalFile
+================
+*/
+void WritePortalFile (tree_t *tree)
+{
+ char filename[1024];
+ node_t *headnode;
+
+ qprintf ("--- WritePortalFile ---\n");
+
+ headnode = tree->headnode;
+ num_visclusters = 0;
+ num_visportals = 0;
+
+ FreeTreePortals_r (headnode);
+
+ MakeHeadnodePortals (tree);
+
+ CreateVisPortals_r (headnode);
+
+// set the cluster field in every leaf and count the total number of portals
+
+ NumberLeafs_r (headnode);
+
+// write the file
+ sprintf (filename, "%s.prt", source);
+ printf ("writing %s\n", filename);
+ pf = fopen (filename, "w");
+ if (!pf)
+ Error ("Error opening %s", filename);
+
+ fprintf (pf, "%s\n", PORTALFILE);
+ fprintf (pf, "%i\n", num_visclusters);
+ fprintf (pf, "%i\n", num_visportals);
+
+ qprintf ("%5i visclusters\n", num_visclusters);
+ qprintf ("%5i visportals\n", num_visportals);
+
+ WritePortalFile_r (headnode);
+
+ fclose (pf);
+
+ // we need to store the clusters out now because ordering
+ // issues made us do this after writebsp...
+ clusterleaf = 1;
+ SaveClusters_r (headnode);
+}
+
projects / xonotic / netradiant.git / blobdiff