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utils/vbsp/leakfile.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+
+#include "vbsp.h"
+#include "color.h"
+
+/*
+==============================================================================
+
+LEAF FILE GENERATION
+
+Save out name.line for qe3 to read
+==============================================================================
+*/
+
+
+/*
+=============
+LeakFile
+
+Finds the shortest possible chain of portals
+that leads from the outside leaf to a specifically
+occupied leaf
+=============
+*/
+void LeakFile (tree_t *tree)
+{
+	Vector	mid;
+	FILE	*linefile;
+	char	filename[1024];
+	node_t	*node;
+	int		count;
+
+	if (!tree->outside_node.occupied)
+		return;
+
+	tree->leaked = true;
+	qprintf ("--- LeakFile ---\n");
+
+	//
+	// write the points to the file
+	//
+	sprintf (filename, "%s.lin", source);
+	linefile = fopen (filename, "w");
+	if (!linefile)
+		Error ("Couldn't open %s\n", filename);
+
+	count = 0;
+	node = &tree->outside_node;
+	while (node->occupied > 1)
+	{
+		portal_t	*nextportal = NULL;
+		node_t		*nextnode = NULL;
+		int			s = 0;
+
+		// find the best portal exit
+		int next = node->occupied;
+		for (portal_t *p=node->portals ; p ; p = p->next[!s])
+		{
+			s = (p->nodes[0] == node);
+			if (p->nodes[s]->occupied
+				&& p->nodes[s]->occupied < next)
+			{
+				nextportal = p;
+				nextnode = p->nodes[s];
+				next = nextnode->occupied;
+			}
+		}
+		node = nextnode;
+		WindingCenter (nextportal->winding, mid);
+		fprintf (linefile, "%f %f %f\n", mid[0], mid[1], mid[2]);
+		count++;
+	}
+
+	// Add the occupant's origin to the leakfile.
+	Vector origin;
+	GetVectorForKey (node->occupant, "origin", origin);
+
+	fprintf (linefile, "%f %f %f\n", origin[0], origin[1], origin[2]);
+	qprintf ("%5i point linefile\n", count+1);
+
+	fclose (linefile);
+
+	// Emit a leak warning.
+	const char *cl = ValueForKey (node->occupant, "classname");
+	Color red(255,0,0,255);
+	ColorSpewMessage( SPEW_MESSAGE, &red, "Entity %s (%.2f %.2f %.2f) leaked!\n", cl, origin[0], origin[1], origin[2] );
+}
+
+void AreaportalLeakFile( tree_t *tree, portal_t *pStartPortal, portal_t *pEndPortal, node_t *pStart )
+{
+	Vector	mid;
+	FILE	*linefile;
+	char	filename[1024];
+	node_t	*node;
+	int		count;
+
+	// wrote a leak line file already, don't overwrite it with the areaportal leak file
+	if ( tree->leaked )
+		return;
+
+	tree->leaked = true;
+	qprintf ("--- LeakFile ---\n");
+
+	//
+	// write the points to the file
+	//
+	sprintf (filename, "%s.lin", source);
+	linefile = fopen (filename, "w");
+	if (!linefile)
+		Error ("Couldn't open %s\n", filename);
+
+	count = 2;
+	WindingCenter (pEndPortal->winding, mid);
+	fprintf (linefile, "%f %f %f\n", mid[0], mid[1], mid[2]);
+	mid = 0.5 * (pStart->mins + pStart->maxs);
+	fprintf (linefile, "%f %f %f\n", mid[0], mid[1], mid[2]);
+
+	node = pStart;
+	while (node->occupied >= 1)
+	{
+		portal_t	*nextportal = NULL;
+		node_t		*nextnode = NULL;
+		int			s = 0;
+
+		// find the best portal exit
+		int next = node->occupied;
+		for (portal_t *p=node->portals ; p ; p = p->next[!s])
+		{
+			s = (p->nodes[0] == node);
+			if (p->nodes[s]->occupied
+				&& p->nodes[s]->occupied < next)
+			{
+				nextportal = p;
+				nextnode = p->nodes[s];
+				next = nextnode->occupied;
+			}
+		}
+		if ( !nextnode )
+			break;
+		node = nextnode;
+		WindingCenter (nextportal->winding, mid);
+		fprintf (linefile, "%f %f %f\n", mid[0], mid[1], mid[2]);
+		count++;
+	}
+	// add the occupant center
+	if ( node )
+	{
+		mid = 0.5 * (node->mins + node->maxs);
+		fprintf (linefile, "%f %f %f\n", mid[0], mid[1], mid[2]);
+		count++;
+	}
+	WindingCenter (pStartPortal->winding, mid);
+	count++;
+	fprintf (linefile, "%f %f %f\n", mid[0], mid[1], mid[2]);
+
+	qprintf ("%5i point linefile\n", count);
+
+	fclose (linefile);
+	Warning( "Wrote %s\n", filename );
+	Color red(255,0,0,255);
+	ColorSpewMessage( SPEW_MESSAGE, &red, "Areaportal leak ! File: %s ", filename );
+}