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- #include "bsp5.h"
-
- // PointInLeaf
- // PlaceOccupant
- // MarkLeakTrail
- // RecursiveFillOutside
- // ClearOutFaces_r
- // isClassnameAllowableOutside
- // FreeAllowableOutsideList
- // LoadAllowableOutsideList
- // FillOutside
-
- static int outleafs;
- static int valid;
- static int c_falsenodes;
- static int c_free_faces;
- static int c_keep_faces;
-
- // =====================================================================================
- // PointInLeaf
- // =====================================================================================
- static node_t* PointInLeaf(node_t* node, const vec3_t point)
- {
- vec_t d;
-
- if (node->contents)
- {
- //Log("PointInLeaf::node->contents == %i\n", node->contents);
- return node;
- }
-
- d = DotProduct(g_dplanes[node->planenum].normal, point) - g_dplanes[node->planenum].dist;
-
- if (d > 0)
- return PointInLeaf(node->children[0], point);
-
- return PointInLeaf(node->children[1], point);
- }
-
- // =====================================================================================
- // PlaceOccupant
- // =====================================================================================
- static bool PlaceOccupant(const int num, const vec3_t point, node_t* headnode)
- {
- node_t* n;
-
- n = PointInLeaf(headnode, point);
- if (n->contents == CONTENTS_SOLID)
- {
- return false;
- }
- //Log("PlaceOccupant::n->contents == %i\n", n->contents);
-
- n->occupied = num;
- return true;
- }
-
- // =====================================================================================
- // MarkLeakTrail
- // =====================================================================================
- static portal_t* prevleaknode;
- static FILE* pointfile;
- static FILE* linefile;
-
- static void MarkLeakTrail(portal_t* n2)
- {
- int i;
- vec3_t p1, p2, dir;
- float len;
- portal_t* n1;
-
- n1 = prevleaknode;
- prevleaknode = n2;
-
- if (!n1)
- {
- return;
- }
-
- n2->winding->getCenter(p1);
- n1->winding->getCenter(p2);
-
- // Linefile
- fprintf(linefile, "%f %f %f - %f %f %f\n", p1[0], p1[1], p1[2], p2[0], p2[1], p2[2]);
-
- // Pointfile
- fprintf(pointfile, "%f %f %f\n", p1[0], p1[1], p1[2]);
-
- VectorSubtract(p2, p1, dir);
- len = VectorLength(dir);
- VectorNormalize(dir);
-
- while (len > 2)
- {
- fprintf(pointfile, "%f %f %f\n", p1[0], p1[1], p1[2]);
- for (i = 0; i < 3; i++)
- p1[i] += dir[i] * 2;
- len -= 2;
- }
- }
-
- // =====================================================================================
- // RecursiveFillOutside
- // Returns true if an occupied leaf is reached
- // If fill is false, just check, don't fill
- // =====================================================================================
- static int hit_occupied;
- static int backdraw;
- static bool RecursiveFillOutside(node_t* l, const bool fill)
- {
- portal_t* p;
- int s;
-
- if ((l->contents == CONTENTS_SOLID) || (l->contents == CONTENTS_SKY)
- #ifdef ZHLT_DETAIL
- || (l->contents == CONTENTS_DETAIL)
- #endif
- )
- {
- /*if (l->contents != CONTENTS_SOLID)
- Log("RecursiveFillOutside::l->contents == %i \n", l->contents);*/
-
- return false;
- }
-
- if (l->valid == valid)
- {
- return false;
- }
-
- if (l->occupied)
- {
- hit_occupied = l->occupied;
- backdraw = 1000;
- return true;
- }
-
- l->valid = valid;
-
- // fill it and it's neighbors
- if (fill)
- {
- l->contents = CONTENTS_SOLID;
- l->planenum = -1;
- }
- outleafs++;
-
- for (p = l->portals; p;)
- {
- s = (p->nodes[0] == l);
-
- if (RecursiveFillOutside(p->nodes[s], fill))
- { // leaked, so stop filling
- if (backdraw-- > 0)
- {
- MarkLeakTrail(p);
- }
- return true;
- }
- p = p->next[!s];
- }
-
- return false;
- }
-
- // =====================================================================================
- // ClearOutFaces_r
- // Removes unused nodes
- // =====================================================================================
- static node_t* ClearOutFaces_r(node_t* node)
- {
- face_t* f;
- face_t* fnext;
- face_t** fp;
- portal_t* p;
-
- // mark the node and all it's faces, so they
- // can be removed if no children use them
-
- node->valid = 0; // will be set if any children touch it
- for (f = node->faces; f; f = f->next)
- {
- f->outputnumber = -1;
- }
-
- // go down the children
- if (node->planenum != -1)
- {
- //
- // decision node
- //
- node->children[0] = ClearOutFaces_r(node->children[0]);
- node->children[1] = ClearOutFaces_r(node->children[1]);
-
- // free any faces not in open child leafs
- f = node->faces;
- node->faces = NULL;
-
- for (; f; f = fnext)
- {
- fnext = f->next;
- if (f->outputnumber == -1)
- { // never referenced, so free it
- c_free_faces++;
- FreeFace(f);
- }
- else
- {
- c_keep_faces++;
- f->next = node->faces;
- node->faces = f;
- }
- }
-
- if (!node->valid)
- {
- // this node does not touch any interior leafs
-
- // if both children are solid, just make this node solid
- if (node->children[0]->contents == CONTENTS_SOLID && node->children[1]->contents == CONTENTS_SOLID)
- {
- node->contents = CONTENTS_SOLID;
- node->planenum = -1;
- return node;
- }
-
- // if one child is solid, shortcut down the other side
- if (node->children[0]->contents == CONTENTS_SOLID)
- {
- return node->children[1];
- }
- if (node->children[1]->contents == CONTENTS_SOLID)
- {
- return node->children[0];
- }
-
- c_falsenodes++;
- }
- return node;
- }
-
- //
- // leaf node
- //
- if (node->contents != CONTENTS_SOLID)
- {
- // this node is still inside
-
- // mark all the nodes used as portals
- for (p = node->portals; p;)
- {
- if (p->onnode)
- {
- p->onnode->valid = 1;
- }
- if (p->nodes[0] == node) // only write out from first leaf
- {
- p = p->next[0];
- }
- else
- {
- p = p->next[1];
- }
- }
-
- // mark all of the faces to be drawn
- for (fp = node->markfaces; *fp; fp++)
- {
- (*fp)->outputnumber = 0;
- }
-
- return node;
- }
-
- // this was a filled in node, so free the markfaces
- if (node->planenum != -1)
- {
- free(node->markfaces);
- }
-
- return node;
- }
-
- // =====================================================================================
- // isClassnameAllowableOutside
- // =====================================================================================
- #define MAX_ALLOWABLE_OUTSIDE_GROWTH_SIZE 64
-
- unsigned g_nAllowableOutside = 0;
- unsigned g_maxAllowableOutside = 0;
- char** g_strAllowableOutsideList;
-
- bool isClassnameAllowableOutside(const char* const classname)
- {
- if (g_strAllowableOutsideList)
- {
- unsigned x;
- char** list = g_strAllowableOutsideList;
-
- for (x = 0; x < g_nAllowableOutside; x++, list++)
- {
- if (list)
- {
- if (!strcasecmp(classname, *list))
- {
- return true;
- }
- }
- }
- }
-
- return false;
- }
-
- // =====================================================================================
- // FreeAllowableOutsideList
- // =====================================================================================
- void FreeAllowableOutsideList()
- {
- if (g_strAllowableOutsideList)
- {
- free(g_strAllowableOutsideList);
- g_strAllowableOutsideList = NULL;
- }
- }
-
- // =====================================================================================
- // LoadAllowableOutsideList
- // =====================================================================================
- void LoadAllowableOutsideList(const char* const filename)
- {
- char* fname;
- int i, x, y;
- char* pData;
- char* pszData;
-
- if (!filename)
- {
- return;
- }
- else
- {
- unsigned len = strlen(filename) + 5;
-
- fname = (char*)Alloc(len);
- safe_snprintf(fname, len, "%s", filename);
- }
-
- if (q_exists(fname))
- {
- if ((i = LoadFile(fname, &pData)))
- {
- Log("Reading allowable void entities from file '%s'\n", fname);
- g_nAllowableOutside = 0;
- for (pszData = pData, y = 0, x = 0; x < i; x++)
- {
- if ((pData[x] == '\n') || (pData[x] == '\r'))
- {
- pData[x] = 0;
- if (strlen(pszData))
- {
- if (g_nAllowableOutside == g_maxAllowableOutside)
- {
- g_maxAllowableOutside += MAX_ALLOWABLE_OUTSIDE_GROWTH_SIZE;
- g_strAllowableOutsideList =
-
- (char**)realloc(g_strAllowableOutsideList, sizeof(char*) * g_maxAllowableOutside);
- }
-
- g_strAllowableOutsideList[y++] = pszData;
- g_nAllowableOutside++;
-
- Verbose("Adding entity '%s' to the allowable void list\n", pszData);
- }
- pszData = pData + x + 1;
- }
- }
- }
- }
- }
-
- // =====================================================================================
- // FillOutside
- // =====================================================================================
- node_t* FillOutside(node_t* node, const bool leakfile, const unsigned hullnum)
- {
- int s;
- int i;
- bool inside;
- bool ret;
- vec3_t origin;
- const char* cl;
-
- Verbose("----- FillOutside ----\n");
-
- if (g_nofill)
- {
- Log("skipped\n");
- return node;
- }
-
- //
- // place markers for all entities so
- // we know if we leak inside
- //
- inside = false;
- for (i = 1; i < g_numentities; i++)
- {
- GetVectorForKey(&g_entities[i], "origin", origin);
- cl = ValueForKey(&g_entities[i], "classname");
- if (!isClassnameAllowableOutside(cl))
- {
- if (!VectorCompare(origin, vec3_origin))
- {
- origin[2] += 1; // so objects on floor are ok
-
- // nudge playerstart around if needed so clipping hulls allways
- // have a vlaid point
- if (!strcmp(cl, "info_player_start"))
- {
- int x, y;
-
- for (x = -16; x <= 16; x += 16)
- {
- for (y = -16; y <= 16; y += 16)
- {
- origin[0] += x;
- origin[1] += y;
- if (PlaceOccupant(i, origin, node))
- {
- inside = true;
- goto gotit;
- }
- origin[0] -= x;
- origin[1] -= y;
- }
- }
- gotit:;
- }
- else
- {
- if (PlaceOccupant(i, origin, node))
- inside = true;
- }
- }
- }
- }
-
- if (!inside)
- {
- Warning("No entities exist in hull %i, no filling performed for this hull", hullnum);
- return node;
- }
-
- s = !(g_outside_node.portals->nodes[1] == &g_outside_node);
-
- // first check to see if an occupied leaf is hit
- outleafs = 0;
- valid++;
-
- prevleaknode = NULL;
-
- if (leakfile)
- {
- pointfile = fopen(g_pointfilename, "w");
- if (!pointfile)
- {
- Error("Couldn't open pointfile %s\n", g_pointfilename);
- }
-
- linefile = fopen(g_linefilename, "w");
- if (!linefile)
- {
- Error("Couldn't open linefile %s\n", g_linefilename);
- }
- }
-
- ret = RecursiveFillOutside(g_outside_node.portals->nodes[s], false);
-
- if (leakfile)
- {
- fclose(pointfile);
- fclose(linefile);
- }
-
- if (ret)
- {
- GetVectorForKey(&g_entities[hit_occupied], "origin", origin);
-
-
- {
- Warning("=== LEAK in hull %i ===\nEntity %s @ (%4.0f,%4.0f,%4.0f)",
- hullnum, ValueForKey(&g_entities[hit_occupied], "classname"), origin[0], origin[1], origin[2]);
- PrintOnce(
- "\n A LEAK is a hole in the map, where the inside of it is exposed to the\n"
- "(unwanted) outside region. The entity listed in the error is just a helpful\n"
- "indication of where the beginning of the leak pointfile starts, so the\n"
- "beginning of the line can be quickly found and traced to until reaching the\n"
- "outside. Unless this entity is accidentally on the outside of the map, it\n"
- "probably should not be deleted. Some complex rotating objects entities need\n"
- "their origins outside the map. To deal with these, just enclose the origin\n"
- "brush with a solid world brush\n");
- }
-
- if (!g_bLeaked)
- {
- // First leak spits this out
- Log("Leak pointfile generated\n\n");
- }
-
- if (g_bLeakOnly)
- {
- Error("Stopped by leak.");
- }
-
- g_bLeaked = true;
-
- return node;
- }
-
- // now go back and fill things in
- valid++;
- RecursiveFillOutside(g_outside_node.portals->nodes[s], true);
-
- // remove faces and nodes from filled in leafs
- c_falsenodes = 0;
- c_free_faces = 0;
- c_keep_faces = 0;
- node = ClearOutFaces_r(node);
-
- Verbose("%5i outleafs\n", outleafs);
- Verbose("%5i freed faces\n", c_free_faces);
- Verbose("%5i keep faces\n", c_keep_faces);
- Verbose("%5i falsenodes\n", c_falsenodes);
-
- // save portal file for vis tracing
- if ((hullnum == 0) && leakfile)
- {
- WritePortalfile(node);
- }
-
- return node;
- }
-