diff options
Diffstat (limited to 'code/qcommon/cm_test.c')
| -rwxr-xr-x | code/qcommon/cm_test.c | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/code/qcommon/cm_test.c b/code/qcommon/cm_test.c new file mode 100755 index 0000000..ef18e60 --- /dev/null +++ b/code/qcommon/cm_test.c @@ -0,0 +1,478 @@ +/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena 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 III Arena 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 Foobar; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+===========================================================================
+*/
+#include "cm_local.h"
+
+
+/*
+==================
+CM_PointLeafnum_r
+
+==================
+*/
+int CM_PointLeafnum_r( const vec3_t p, int num ) {
+ float d;
+ cNode_t *node;
+ cplane_t *plane;
+
+ while (num >= 0)
+ {
+ node = cm.nodes + num;
+ plane = node->plane;
+
+ if (plane->type < 3)
+ d = p[plane->type] - plane->dist;
+ else
+ d = DotProduct (plane->normal, p) - plane->dist;
+ if (d < 0)
+ num = node->children[1];
+ else
+ num = node->children[0];
+ }
+
+ c_pointcontents++; // optimize counter
+
+ return -1 - num;
+}
+
+int CM_PointLeafnum( const vec3_t p ) {
+ if ( !cm.numNodes ) { // map not loaded
+ return 0;
+ }
+ return CM_PointLeafnum_r (p, 0);
+}
+
+
+/*
+======================================================================
+
+LEAF LISTING
+
+======================================================================
+*/
+
+
+void CM_StoreLeafs( leafList_t *ll, int nodenum ) {
+ int leafNum;
+
+ leafNum = -1 - nodenum;
+
+ // store the lastLeaf even if the list is overflowed
+ if ( cm.leafs[ leafNum ].cluster != -1 ) {
+ ll->lastLeaf = leafNum;
+ }
+
+ if ( ll->count >= ll->maxcount) {
+ ll->overflowed = qtrue;
+ return;
+ }
+ ll->list[ ll->count++ ] = leafNum;
+}
+
+void CM_StoreBrushes( leafList_t *ll, int nodenum ) {
+ int i, k;
+ int leafnum;
+ int brushnum;
+ cLeaf_t *leaf;
+ cbrush_t *b;
+
+ leafnum = -1 - nodenum;
+
+ leaf = &cm.leafs[leafnum];
+
+ for ( k = 0 ; k < leaf->numLeafBrushes ; k++ ) {
+ brushnum = cm.leafbrushes[leaf->firstLeafBrush+k];
+ b = &cm.brushes[brushnum];
+ if ( b->checkcount == cm.checkcount ) {
+ continue; // already checked this brush in another leaf
+ }
+ b->checkcount = cm.checkcount;
+ for ( i = 0 ; i < 3 ; i++ ) {
+ if ( b->bounds[0][i] >= ll->bounds[1][i] || b->bounds[1][i] <= ll->bounds[0][i] ) {
+ break;
+ }
+ }
+ if ( i != 3 ) {
+ continue;
+ }
+ if ( ll->count >= ll->maxcount) {
+ ll->overflowed = qtrue;
+ return;
+ }
+ ((cbrush_t **)ll->list)[ ll->count++ ] = b;
+ }
+#if 0
+ // store patches?
+ for ( k = 0 ; k < leaf->numLeafSurfaces ; k++ ) {
+ patch = cm.surfaces[ cm.leafsurfaces[ leaf->firstleafsurface + k ] ];
+ if ( !patch ) {
+ continue;
+ }
+ }
+#endif
+}
+
+/*
+=============
+CM_BoxLeafnums
+
+Fills in a list of all the leafs touched
+=============
+*/
+void CM_BoxLeafnums_r( leafList_t *ll, int nodenum ) {
+ cplane_t *plane;
+ cNode_t *node;
+ int s;
+
+ while (1) {
+ if (nodenum < 0) {
+ ll->storeLeafs( ll, nodenum );
+ return;
+ }
+
+ node = &cm.nodes[nodenum];
+ plane = node->plane;
+ s = BoxOnPlaneSide( ll->bounds[0], ll->bounds[1], plane );
+ if (s == 1) {
+ nodenum = node->children[0];
+ } else if (s == 2) {
+ nodenum = node->children[1];
+ } else {
+ // go down both
+ CM_BoxLeafnums_r( ll, node->children[0] );
+ nodenum = node->children[1];
+ }
+
+ }
+}
+
+/*
+==================
+CM_BoxLeafnums
+==================
+*/
+int CM_BoxLeafnums( const vec3_t mins, const vec3_t maxs, int *list, int listsize, int *lastLeaf) {
+ leafList_t ll;
+
+ cm.checkcount++;
+
+ VectorCopy( mins, ll.bounds[0] );
+ VectorCopy( maxs, ll.bounds[1] );
+ ll.count = 0;
+ ll.maxcount = listsize;
+ ll.list = list;
+ ll.storeLeafs = CM_StoreLeafs;
+ ll.lastLeaf = 0;
+ ll.overflowed = qfalse;
+
+ CM_BoxLeafnums_r( &ll, 0 );
+
+ *lastLeaf = ll.lastLeaf;
+ return ll.count;
+}
+
+/*
+==================
+CM_BoxBrushes
+==================
+*/
+int CM_BoxBrushes( const vec3_t mins, const vec3_t maxs, cbrush_t **list, int listsize ) {
+ leafList_t ll;
+
+ cm.checkcount++;
+
+ VectorCopy( mins, ll.bounds[0] );
+ VectorCopy( maxs, ll.bounds[1] );
+ ll.count = 0;
+ ll.maxcount = listsize;
+ ll.list = (void *)list;
+ ll.storeLeafs = CM_StoreBrushes;
+ ll.lastLeaf = 0;
+ ll.overflowed = qfalse;
+
+ CM_BoxLeafnums_r( &ll, 0 );
+
+ return ll.count;
+}
+
+
+//====================================================================
+
+
+/*
+==================
+CM_PointContents
+
+==================
+*/
+int CM_PointContents( const vec3_t p, clipHandle_t model ) {
+ int leafnum;
+ int i, k;
+ int brushnum;
+ cLeaf_t *leaf;
+ cbrush_t *b;
+ int contents;
+ float d;
+ cmodel_t *clipm;
+
+ if (!cm.numNodes) { // map not loaded
+ return 0;
+ }
+
+ if ( model ) {
+ clipm = CM_ClipHandleToModel( model );
+ leaf = &clipm->leaf;
+ } else {
+ leafnum = CM_PointLeafnum_r (p, 0);
+ leaf = &cm.leafs[leafnum];
+ }
+
+ contents = 0;
+ for (k=0 ; k<leaf->numLeafBrushes ; k++) {
+ brushnum = cm.leafbrushes[leaf->firstLeafBrush+k];
+ b = &cm.brushes[brushnum];
+
+ // see if the point is in the brush
+ for ( i = 0 ; i < b->numsides ; i++ ) {
+ d = DotProduct( p, b->sides[i].plane->normal );
+// FIXME test for Cash
+// if ( d >= b->sides[i].plane->dist ) {
+ if ( d > b->sides[i].plane->dist ) {
+ break;
+ }
+ }
+
+ if ( i == b->numsides ) {
+ contents |= b->contents;
+ }
+ }
+
+ return contents;
+}
+
+/*
+==================
+CM_TransformedPointContents
+
+Handles offseting and rotation of the end points for moving and
+rotating entities
+==================
+*/
+int CM_TransformedPointContents( const vec3_t p, clipHandle_t model, const vec3_t origin, const vec3_t angles) {
+ vec3_t p_l;
+ vec3_t temp;
+ vec3_t forward, right, up;
+
+ // subtract origin offset
+ VectorSubtract (p, origin, p_l);
+
+ // rotate start and end into the models frame of reference
+ if ( model != BOX_MODEL_HANDLE &&
+ (angles[0] || angles[1] || angles[2]) )
+ {
+ AngleVectors (angles, forward, right, up);
+
+ VectorCopy (p_l, temp);
+ p_l[0] = DotProduct (temp, forward);
+ p_l[1] = -DotProduct (temp, right);
+ p_l[2] = DotProduct (temp, up);
+ }
+
+ return CM_PointContents( p_l, model );
+}
+
+
+
+/*
+===============================================================================
+
+PVS
+
+===============================================================================
+*/
+
+byte *CM_ClusterPVS (int cluster) {
+ if (cluster < 0 || cluster >= cm.numClusters || !cm.vised ) {
+ return cm.visibility;
+ }
+
+ return cm.visibility + cluster * cm.clusterBytes;
+}
+
+
+
+/*
+===============================================================================
+
+AREAPORTALS
+
+===============================================================================
+*/
+
+void CM_FloodArea_r( int areaNum, int floodnum) {
+ int i;
+ cArea_t *area;
+ int *con;
+
+ area = &cm.areas[ areaNum ];
+
+ if ( area->floodvalid == cm.floodvalid ) {
+ if (area->floodnum == floodnum)
+ return;
+ Com_Error (ERR_DROP, "FloodArea_r: reflooded");
+ }
+
+ area->floodnum = floodnum;
+ area->floodvalid = cm.floodvalid;
+ con = cm.areaPortals + areaNum * cm.numAreas;
+ for ( i=0 ; i < cm.numAreas ; i++ ) {
+ if ( con[i] > 0 ) {
+ CM_FloodArea_r( i, floodnum );
+ }
+ }
+}
+
+/*
+====================
+CM_FloodAreaConnections
+
+====================
+*/
+void CM_FloodAreaConnections( void ) {
+ int i;
+ cArea_t *area;
+ int floodnum;
+
+ // all current floods are now invalid
+ cm.floodvalid++;
+ floodnum = 0;
+
+ for (i = 0 ; i < cm.numAreas ; i++) {
+ area = &cm.areas[i];
+ if (area->floodvalid == cm.floodvalid) {
+ continue; // already flooded into
+ }
+ floodnum++;
+ CM_FloodArea_r (i, floodnum);
+ }
+
+}
+
+/*
+====================
+CM_AdjustAreaPortalState
+
+====================
+*/
+void CM_AdjustAreaPortalState( int area1, int area2, qboolean open ) {
+ if ( area1 < 0 || area2 < 0 ) {
+ return;
+ }
+
+ if ( area1 >= cm.numAreas || area2 >= cm.numAreas ) {
+ Com_Error (ERR_DROP, "CM_ChangeAreaPortalState: bad area number");
+ }
+
+ if ( open ) {
+ cm.areaPortals[ area1 * cm.numAreas + area2 ]++;
+ cm.areaPortals[ area2 * cm.numAreas + area1 ]++;
+ } else {
+ cm.areaPortals[ area1 * cm.numAreas + area2 ]--;
+ cm.areaPortals[ area2 * cm.numAreas + area1 ]--;
+ if ( cm.areaPortals[ area2 * cm.numAreas + area1 ] < 0 ) {
+ Com_Error (ERR_DROP, "CM_AdjustAreaPortalState: negative reference count");
+ }
+ }
+
+ CM_FloodAreaConnections ();
+}
+
+/*
+====================
+CM_AreasConnected
+
+====================
+*/
+qboolean CM_AreasConnected( int area1, int area2 ) {
+#ifndef BSPC
+ if ( cm_noAreas->integer ) {
+ return qtrue;
+ }
+#endif
+
+ if ( area1 < 0 || area2 < 0 ) {
+ return qfalse;
+ }
+
+ if (area1 >= cm.numAreas || area2 >= cm.numAreas) {
+ Com_Error (ERR_DROP, "area >= cm.numAreas");
+ }
+
+ if (cm.areas[area1].floodnum == cm.areas[area2].floodnum) {
+ return qtrue;
+ }
+ return qfalse;
+}
+
+
+/*
+=================
+CM_WriteAreaBits
+
+Writes a bit vector of all the areas
+that are in the same flood as the area parameter
+Returns the number of bytes needed to hold all the bits.
+
+The bits are OR'd in, so you can CM_WriteAreaBits from multiple
+viewpoints and get the union of all visible areas.
+
+This is used to cull non-visible entities from snapshots
+=================
+*/
+int CM_WriteAreaBits (byte *buffer, int area)
+{
+ int i;
+ int floodnum;
+ int bytes;
+
+ bytes = (cm.numAreas+7)>>3;
+
+#ifndef BSPC
+ if (cm_noAreas->integer || area == -1)
+#else
+ if ( area == -1)
+#endif
+ { // for debugging, send everything
+ Com_Memset (buffer, 255, bytes);
+ }
+ else
+ {
+ floodnum = cm.areas[area].floodnum;
+ for (i=0 ; i<cm.numAreas ; i++)
+ {
+ if (cm.areas[i].floodnum == floodnum || area == -1)
+ buffer[i>>3] |= 1<<(i&7);
+ }
+ }
+
+ return bytes;
+}
+
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