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240 lines
8.1 KiB
C
240 lines
8.1 KiB
C
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, 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 Foobar; 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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*/
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/*****************************************************************************
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* name: be_aas_routealt.c
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*
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* desc: AAS
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*
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* $Archive: /MissionPack/code/botlib/be_aas_routealt.c $
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*
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*****************************************************************************/
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#include "../game/q_shared.h"
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#include "l_utils.h"
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#include "l_memory.h"
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#include "l_log.h"
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#include "l_script.h"
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#include "l_precomp.h"
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#include "l_struct.h"
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#include "aasfile.h"
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#include "../game/botlib.h"
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#include "../game/be_aas.h"
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#include "be_aas_funcs.h"
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#include "be_interface.h"
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#include "be_aas_def.h"
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#define ENABLE_ALTROUTING
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//#define ALTROUTE_DEBUG
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typedef struct midrangearea_s
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{
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int valid;
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unsigned short starttime;
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unsigned short goaltime;
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} midrangearea_t;
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midrangearea_t *midrangeareas;
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int *clusterareas;
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int numclusterareas;
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//===========================================================================
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//
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// Parameter: -
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// Returns: -
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// Changes Globals: -
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//===========================================================================
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void AAS_AltRoutingFloodCluster_r(int areanum)
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{
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int i, otherareanum;
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aas_area_t *area;
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aas_face_t *face;
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//add the current area to the areas of the current cluster
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clusterareas[numclusterareas] = areanum;
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numclusterareas++;
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//remove the area from the mid range areas
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midrangeareas[areanum].valid = qfalse;
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//flood to other areas through the faces of this area
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area = &aasworld.areas[areanum];
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for (i = 0; i < area->numfaces; i++)
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{
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face = &aasworld.faces[abs(aasworld.faceindex[area->firstface + i])];
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//get the area at the other side of the face
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if (face->frontarea == areanum) otherareanum = face->backarea;
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else otherareanum = face->frontarea;
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//if there is an area at the other side of this face
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if (!otherareanum) continue;
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//if the other area is not a midrange area
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if (!midrangeareas[otherareanum].valid) continue;
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//
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AAS_AltRoutingFloodCluster_r(otherareanum);
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} //end for
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} //end of the function AAS_AltRoutingFloodCluster_r
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//===========================================================================
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//
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// Parameter: -
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// Returns: -
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// Changes Globals: -
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//===========================================================================
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int AAS_AlternativeRouteGoals(vec3_t start, int startareanum, vec3_t goal, int goalareanum, int travelflags,
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aas_altroutegoal_t *altroutegoals, int maxaltroutegoals,
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int type)
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{
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#ifndef ENABLE_ALTROUTING
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return 0;
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#else
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int i, j, bestareanum;
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int numaltroutegoals, nummidrangeareas;
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int starttime, goaltime, goaltraveltime;
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float dist, bestdist;
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vec3_t mid, dir;
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#ifdef ALTROUTE_DEBUG
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int startmillisecs;
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startmillisecs = Sys_MilliSeconds();
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#endif
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if (!startareanum || !goalareanum)
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return 0;
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//travel time towards the goal area
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goaltraveltime = AAS_AreaTravelTimeToGoalArea(startareanum, start, goalareanum, travelflags);
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//clear the midrange areas
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Com_Memset(midrangeareas, 0, aasworld.numareas * sizeof(midrangearea_t));
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numaltroutegoals = 0;
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//
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nummidrangeareas = 0;
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//
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for (i = 1; i < aasworld.numareas; i++)
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{
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//
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if (!(type & ALTROUTEGOAL_ALL))
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{
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if (!(type & ALTROUTEGOAL_CLUSTERPORTALS && (aasworld.areasettings[i].contents & AREACONTENTS_CLUSTERPORTAL)))
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{
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if (!(type & ALTROUTEGOAL_VIEWPORTALS && (aasworld.areasettings[i].contents & AREACONTENTS_VIEWPORTAL)))
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{
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continue;
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} //end if
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} //end if
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} //end if
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//if the area has no reachabilities
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if (!AAS_AreaReachability(i)) continue;
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//tavel time from the area to the start area
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starttime = AAS_AreaTravelTimeToGoalArea(startareanum, start, i, travelflags);
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if (!starttime) continue;
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//if the travel time from the start to the area is greater than the shortest goal travel time
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if (starttime > (float) 1.1 * goaltraveltime) continue;
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//travel time from the area to the goal area
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goaltime = AAS_AreaTravelTimeToGoalArea(i, NULL, goalareanum, travelflags);
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if (!goaltime) continue;
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//if the travel time from the area to the goal is greater than the shortest goal travel time
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if (goaltime > (float) 0.8 * goaltraveltime) continue;
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//this is a mid range area
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midrangeareas[i].valid = qtrue;
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midrangeareas[i].starttime = starttime;
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midrangeareas[i].goaltime = goaltime;
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Log_Write("%d midrange area %d", nummidrangeareas, i);
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nummidrangeareas++;
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} //end for
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//
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for (i = 1; i < aasworld.numareas; i++)
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{
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if (!midrangeareas[i].valid) continue;
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//get the areas in one cluster
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numclusterareas = 0;
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AAS_AltRoutingFloodCluster_r(i);
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//now we've got a cluster with areas through which an alternative route could go
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//get the 'center' of the cluster
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VectorClear(mid);
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for (j = 0; j < numclusterareas; j++)
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{
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VectorAdd(mid, aasworld.areas[clusterareas[j]].center, mid);
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} //end for
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VectorScale(mid, 1.0 / numclusterareas, mid);
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//get the area closest to the center of the cluster
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bestdist = 999999;
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bestareanum = 0;
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for (j = 0; j < numclusterareas; j++)
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{
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VectorSubtract(mid, aasworld.areas[clusterareas[j]].center, dir);
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dist = VectorLength(dir);
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if (dist < bestdist)
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{
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bestdist = dist;
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bestareanum = clusterareas[j];
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} //end if
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} //end for
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//now we've got an area for an alternative route
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//FIXME: add alternative goal origin
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VectorCopy(aasworld.areas[bestareanum].center, altroutegoals[numaltroutegoals].origin);
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altroutegoals[numaltroutegoals].areanum = bestareanum;
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altroutegoals[numaltroutegoals].starttraveltime = midrangeareas[bestareanum].starttime;
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altroutegoals[numaltroutegoals].goaltraveltime = midrangeareas[bestareanum].goaltime;
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altroutegoals[numaltroutegoals].extratraveltime =
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(midrangeareas[bestareanum].starttime + midrangeareas[bestareanum].goaltime) -
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goaltraveltime;
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numaltroutegoals++;
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//
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#ifdef ALTROUTE_DEBUG
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AAS_ShowAreaPolygons(bestareanum, 1, qtrue);
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#endif
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//don't return more than the maximum alternative route goals
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if (numaltroutegoals >= maxaltroutegoals) break;
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} //end for
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#ifdef ALTROUTE_DEBUG
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botimport.Print(PRT_MESSAGE, "alternative route goals in %d msec\n", Sys_MilliSeconds() - startmillisecs);
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#endif
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return numaltroutegoals;
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#endif
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} //end of the function AAS_AlternativeRouteGoals
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//===========================================================================
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//
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// Parameter: -
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// Returns: -
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// Changes Globals: -
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//===========================================================================
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void AAS_InitAlternativeRouting(void)
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{
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#ifdef ENABLE_ALTROUTING
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if (midrangeareas) FreeMemory(midrangeareas);
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midrangeareas = (midrangearea_t *) GetMemory(aasworld.numareas * sizeof(midrangearea_t));
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if (clusterareas) FreeMemory(clusterareas);
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clusterareas = (int *) GetMemory(aasworld.numareas * sizeof(int));
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#endif
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} //end of the function AAS_InitAlternativeRouting
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//===========================================================================
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//
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// Parameter: -
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// Returns: -
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// Changes Globals: -
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//===========================================================================
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void AAS_ShutdownAlternativeRouting(void)
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{
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#ifdef ENABLE_ALTROUTING
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if (midrangeareas) FreeMemory(midrangeareas);
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midrangeareas = NULL;
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if (clusterareas) FreeMemory(clusterareas);
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clusterareas = NULL;
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numclusterareas = 0;
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#endif
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} //end of the function AAS_ShutdownAlternativeRouting
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