//-----------------------------------------------------------------------------
// Purpose: Searches for a hint node that this NPC cares about. If one is
// claims that hint node for this NPC so that no other NPCs
// try to use it.
//
// Input : nFlags - Search criterea. Can currently be one or more of the following:
// bits_HINT_NODE_VISIBLE - searches for visible hint nodes.
// bits_HINT_NODE_RANDOM - calls through the FindHintRandom and builds list of all matching
// nodes and picks randomly from among them. Note: Depending on number of hint nodes, this
// could be slower, so use with care.
//
// Output : Returns pointer to hint node if available hint node was found that matches the
// given criterea that this NPC also cares about. Otherwise, returns NULL
//-----------------------------------------------------------------------------
CAI_Hint* CAI_HintManager::FindHint( CAI_BaseNPC *pNPC, Hint_e nHintType, int nFlags, float flMaxDist, const Vector *pMaxDistFrom )
{
assert( pNPC != NULL );
if ( pNPC == NULL )
return NULL;
CHintCriteria hintCriteria;
hintCriteria.SetHintType( nHintType );
hintCriteria.SetFlag( nFlags );
// Using the NPC's hint group?
if ( nFlags & bits_HINT_NODE_USE_GROUP )
{
hintCriteria.SetGroup( pNPC->GetHintGroup() );
}
// Add the search position
Vector vecPosition = ( pMaxDistFrom != NULL ) ? (*pMaxDistFrom) : pNPC->GetAbsOrigin();
hintCriteria.AddIncludePosition( vecPosition, flMaxDist );
// If asking for a random node, use random logic instead
if ( nFlags & bits_HINT_NODE_RANDOM )
return FindHintRandom( pNPC, vecPosition, hintCriteria );
return FindHint( pNPC, vecPosition, hintCriteria );
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
CAI_Hint *CAI_FearBehavior::FindFearWithdrawalDest()
{
CAI_Hint *pHint;
CHintCriteria hintCriteria;
CAI_BaseNPC *pOuter = GetOuter();
Assert(pOuter != NULL);
hintCriteria.AddHintType( HINT_PLAYER_ALLY_FEAR_DEST );
hintCriteria.SetFlag( bits_HINT_NODE_VISIBLE_TO_PLAYER | bits_HINT_NOT_CLOSE_TO_ENEMY /*| bits_HINT_NODE_IN_VIEWCONE | bits_HINT_NPC_IN_NODE_FOV*/ );
hintCriteria.AddIncludePosition( AI_GetSinglePlayer()->GetAbsOrigin(), ( ai_fear_player_dist.GetFloat() ) );
pHint = CAI_HintManager::FindHint( pOuter, hintCriteria );
if( pHint )
{
// Reserve this node while I try to get to it. When I get there I will lock it.
// Otherwise, if I fail to get there, the node will come available again soon.
pHint->DisableForSeconds( 4.0f );
}
#if 0
else
{
Msg("DID NOT FIND HINT\n");
NDebugOverlay::Cross3D( GetOuter()->WorldSpaceCenter(), 32, 255, 255, 0, false, 10.0f );
}
#endif
return pHint;
}
bool CBounceBomb::IsValidLocation()
{
CBaseEntity *pAvoidObject = NULL;
float flAvoidForce = 0.0f;
CAI_Hint *pHint;
CHintCriteria criteria;
criteria.SetHintType( HINT_WORLD_INHIBIT_COMBINE_MINES );
criteria.SetFlag( bits_HINT_NODE_NEAREST );
criteria.AddIncludePosition( GetAbsOrigin(), 12.0f * 15.0f );
pHint = CAI_HintManager::FindHint( GetAbsOrigin(), criteria );
if( pHint )
{
pAvoidObject = pHint;
flAvoidForce = 120.0f;
}
else
{
// Look for other mines that are too close to me.
CBaseEntity *pEntity = gEntList.FirstEnt();
Vector vecMyPosition = GetAbsOrigin();
while( pEntity )
{
if( pEntity->m_iClassname == m_iClassname && pEntity != this )
{
// Don't lock down if I'm near a mine that's already locked down.
if( vecMyPosition.DistToSqr(pEntity->GetAbsOrigin()) < MINE_MIN_PROXIMITY_SQR )
{
pAvoidObject = pEntity;
flAvoidForce = 60.0f;
break;
}
}
pEntity = gEntList.NextEnt( pEntity );
}
}
if( pAvoidObject )
{
// Build a force vector to push us away from the inhibitor.
// Start by pushing upwards.
Vector vecForce = Vector( 0, 0, VPhysicsGetObject()->GetMass() * 200.0f );
// Now add some force in the direction that takes us away from the inhibitor.
Vector vecDir = GetAbsOrigin() - pAvoidObject->GetAbsOrigin();
vecDir.z = 0.0f;
VectorNormalize( vecDir );
vecForce += vecDir * VPhysicsGetObject()->GetMass() * flAvoidForce;
Flip( vecForce, AngularImpulse( 100, 0, 0 ) );
// Tell the code that asked that this position isn't valid.
return false;
}
return true;
}