92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
// NextBotIntentionInterface.cpp
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// Interface for intentional thinking
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// Author: Michael Booth, November 2007
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//========= Copyright Valve Corporation, All rights reserved. ============//
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#include "cbase.h"
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#include "NextBotInterface.h"
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#include "NextBotIntentionInterface.h"
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// memdbgon must be the last include file in a .cpp file!!!
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#include "tier0/memdbgon.h"
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//------------------------------------------------------------------------------------------------------------------------
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/**
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* Given a subject, return the world space position we should aim at
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*/
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Vector IIntention::SelectTargetPoint( const INextBot *me, const CBaseCombatCharacter *subject ) const
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{
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for ( INextBotEventResponder *sub = FirstContainedResponder(); sub; sub = NextContainedResponder( sub ) )
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{
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const IContextualQuery *query = dynamic_cast< const IContextualQuery * >( sub );
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if ( query )
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{
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// return the response of the first responder that gives a definitive answer
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Vector result = query->SelectTargetPoint( me, subject );
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if ( result != vec3_origin )
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{
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return result;
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}
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}
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}
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// no answer, use a reasonable position
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Vector threatMins, threatMaxs;
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subject->CollisionProp()->WorldSpaceAABB( &threatMins, &threatMaxs );
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Vector targetPoint = subject->GetAbsOrigin();
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targetPoint.z += 0.7f * ( threatMaxs.z - threatMins.z );
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return targetPoint;
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}
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//------------------------------------------------------------------------------------------------------------------------
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/**
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* Given two threats, decide which one is more dangerous
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*/
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const CKnownEntity *IIntention::SelectMoreDangerousThreat( const INextBot *me, const CBaseCombatCharacter *subject, const CKnownEntity *threat1, const CKnownEntity *threat2 ) const
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{
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if ( !threat1 || threat1->IsObsolete() )
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{
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if ( threat2 && !threat2->IsObsolete() )
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return threat2;
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return NULL;
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}
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else if ( !threat2 || threat2->IsObsolete() )
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{
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return threat1;
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}
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for ( INextBotEventResponder *sub = FirstContainedResponder(); sub; sub = NextContainedResponder( sub ) )
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{
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const IContextualQuery *query = dynamic_cast< const IContextualQuery * >( sub );
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if ( query )
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{
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// return the response of the first responder that gives a definitive answer
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const CKnownEntity *result = query->SelectMoreDangerousThreat( me, subject, threat1, threat2 );
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if ( result )
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{
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return result;
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}
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}
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}
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// no specific decision was made - return closest threat as most dangerous
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float range1 = ( subject->GetAbsOrigin() - threat1->GetLastKnownPosition() ).LengthSqr();
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float range2 = ( subject->GetAbsOrigin() - threat2->GetLastKnownPosition() ).LengthSqr();
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if ( range1 < range2 )
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{
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return threat1;
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}
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return threat2;
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}
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