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Fixed potential hang in path finding

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* Fixed potential infinite loop in path finding
* Fixed bots sometimes getting stuck on doors permanently
This commit is contained in:
RGreenlees 2024-03-28 18:34:06 +00:00 committed by pierow
parent 4efd22b709
commit 936ef5d609
2 changed files with 17 additions and 12 deletions
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11
main/source/detour/DetourNavMeshQuery.cpp
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@ -1278,11 +1278,18 @@ dtStatus dtNavMeshQuery::getPathToNode(dtNode* endNode, dtPolyRef* path, int* pa
// Find the length of the entire path.
dtNode* curNode = endNode;
int length = 0;
int maxLength = maxPath * 2;
do
{
length++;
curNode = m_nodePool->getNodeAtIdx(curNode->pidx);
} while (curNode);
// Check to prevent infinite recursion
dtNode* NewNode = m_nodePool->getNodeAtIdx(curNode->pidx);
if (NewNode == curNode) { return DT_FAILURE; }
curNode = NewNode;
} while (curNode && length < maxLength);
// If the path cannot be fully stored then advance to the last node we will be able to store.
curNode = endNode;

18
main/source/mod/AvHAINavigation.cpp
View file

@ -1863,7 +1863,6 @@ dtStatus FindPathClosestToPoint(const nav_profile& NavProfile, const Vector From
status = m_navQuery->findNearestPoly(pStartPos, pExtents, m_navFilter, &StartPoly, StartNearest);
if ((status & DT_FAILURE) || (status & DT_STATUS_DETAIL_MASK))
{
//BotSay(pBot, "findNearestPoly start failed!");
return (status & DT_STATUS_DETAIL_MASK); // couldn't find a polygon
}
@ -1871,7 +1870,6 @@ dtStatus FindPathClosestToPoint(const nav_profile& NavProfile, const Vector From
status = m_navQuery->findNearestPoly(pEndPos, pExtents, m_navFilter, &EndPoly, EndNearest);
if ((status & DT_FAILURE) || (status & DT_STATUS_DETAIL_MASK))
{
//BotSay(pBot, "findNearestPoly end failed!");
return (status & DT_STATUS_DETAIL_MASK); // couldn't find a polygon
}
@ -2481,17 +2479,17 @@ void CheckAndHandleDoorObstruction(AvHAIPlayer* pBot)
Vector NearestPoint = UTIL_GetClosestPointOnEntityToLocation(pBot->Edict->v.origin, BlockingDoorEdict);
if (IsPlayerTouchingEntity(pBot->Edict, BlockingDoorEdict))
{
Vector MoveDir = UTIL_GetVectorNormal2D(pBot->Edict->v.origin - NearestPoint);
pBot->desiredMovementDir = MoveDir;
return;
}
// If the door is in the process of opening or closing, let it finish before doing anything else
if (BlockingDoor->m_toggle_state == TS_GOING_UP || BlockingDoor->m_toggle_state == TS_GOING_DOWN)
{
if (IsPlayerTouchingEntity(pBot->Edict, BlockingDoorEdict))
{
Vector MoveDir = UTIL_GetVectorNormal2D(CurrentPathNode.Location - CurrentPathNode.FromLocation);
pBot->desiredMovementDir = MoveDir;
return;
}
if (vDist2DSq(pBot->Edict->v.origin, NearestPoint) < sqrf(UTIL_MetresToGoldSrcUnits(1.5f)))
{
// Wait for the door to finish opening