140 lines
3.3 KiB
C++
140 lines
3.3 KiB
C++
//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Hooks and classes for the support of humanoid NPCs with
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// groovy facial animation capabilities, aka, "Actors"
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//
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//=============================================================================//
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#include "cbase.h"
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#include "AI_Interest_Target.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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bool CAI_InterestTarget_t::IsThis( CBaseEntity *pThis )
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{
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return (pThis == m_hTarget);
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};
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const Vector &CAI_InterestTarget_t::GetPosition( void )
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{
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if (m_eType == LOOKAT_ENTITY && m_hTarget != NULL)
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{
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m_vecPosition = m_hTarget->EyePosition();
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}
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return m_vecPosition;
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};
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bool CAI_InterestTarget_t::IsActive( void )
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{
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if (m_flEndTime < gpGlobals->curtime) return false;
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if (m_eType == LOOKAT_ENTITY && m_hTarget == NULL) return false;
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return true;
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};
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float CAI_InterestTarget_t::Interest( void )
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{
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float t = (gpGlobals->curtime - m_flStartTime) / (m_flEndTime - m_flStartTime);
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if (t < 0.0f || t > 1.0f)
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return 0.0f;
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if (m_flRamp && t < 1 - m_flRamp)
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{
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//t = t / m_flRamp;
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t = 1.0 - ExponentialDecay( 0.2, m_flRamp, t );
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//t = 1.0 - ExponentialDecay( 0.01, 1 - m_flRamp, t );
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}
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else if (t > 1.0f - m_flRamp)
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{
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t = (1.0 - t) / m_flRamp;
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t = 3.0f * t * t - 2.0f * t * t * t;
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}
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else
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{
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t = 1.0f;
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}
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// ramp
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t *= m_flInterest;
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return t;
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}
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void CAI_InterestTarget::Add( CBaseEntity *pTarget, float flImportance, float flDuration, float flRamp )
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{
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int i;
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for (i = 0; i < Count(); i++)
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{
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CAI_InterestTarget_t &target = Element( i );
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if (target.m_hTarget == pTarget && target.m_flRamp == 0)
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{
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if (target.m_flStartTime == gpGlobals->curtime)
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{
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flImportance = MAX( flImportance, target.m_flInterest );
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}
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Remove( i );
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break;
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}
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}
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Add( CAI_InterestTarget_t::LOOKAT_ENTITY, pTarget, Vector( 0, 0, 0 ), flImportance, flDuration, flRamp );
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}
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void CAI_InterestTarget::Add( const Vector &vecPosition, float flImportance, float flDuration, float flRamp )
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{
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int i;
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for (i = 0; i < Count(); i++)
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{
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CAI_InterestTarget_t &target = Element( i );
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if (target.m_vecPosition == vecPosition)
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{
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Remove( i );
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break;
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}
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}
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Add( CAI_InterestTarget_t::LOOKAT_POSITION, NULL, vecPosition, flImportance, flDuration, flRamp );
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}
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void CAI_InterestTarget::Add( CBaseEntity *pTarget, const Vector &vecPosition, float flImportance, float flDuration, float flRamp )
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{
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int i;
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for (i = 0; i < Count(); i++)
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{
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CAI_InterestTarget_t &target = Element( i );
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if (target.m_hTarget == pTarget)
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{
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if (target.m_flStartTime == gpGlobals->curtime)
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{
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flImportance = MAX( flImportance, target.m_flInterest );
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}
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Remove( i );
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break;
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}
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}
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Add( CAI_InterestTarget_t::LOOKAT_BOTH, pTarget, vecPosition, flImportance, flDuration, flRamp );
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}
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void CAI_InterestTarget::Add( CAI_InterestTarget_t::CAI_InterestTarget_e type, CBaseEntity *pTarget, const Vector &vecPosition, float flImportance, float flDuration, float flRamp )
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{
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int i = AddToTail();
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CAI_InterestTarget_t &target = Element( i );
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target.m_eType = type;
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target.m_hTarget = pTarget;
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target.m_vecPosition = vecPosition;
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target.m_flInterest = flImportance;
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target.m_flStartTime = gpGlobals->curtime;
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target.m_flEndTime = gpGlobals->curtime + flDuration;
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target.m_flRamp = flRamp / flDuration;
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}
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