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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: This will measure the movement of a target entity and move
// another entity to match the movement of the first.
//
//=============================================================================//
#include "cbase.h"
#include "baseentity.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
//-----------------------------------------------------------------------------
// This will measure the movement of a target entity and move
// another entity to match the movement of the first.
//-----------------------------------------------------------------------------
class CLogicMeasureMovement : public CLogicalEntity
{
DECLARE_DATADESC();
DECLARE_CLASS( CLogicMeasureMovement, CLogicalEntity );
public:
virtual void Activate();
private:
void SetMeasureTarget( const char *pName );
void SetMeasureReference( const char *pName );
void SetTarget( const char *pName );
void SetTargetReference( const char *pName );
void InputSetMeasureTarget( inputdata_t &inputdata );
void InputSetMeasureReference( inputdata_t &inputdata );
void InputSetTarget( inputdata_t &inputdata );
void InputSetTargetReference( inputdata_t &inputdata );
void InputSetTargetScale( inputdata_t &inputdata );
void InputEnable( inputdata_t &inputdata );
void InputDisable( inputdata_t &inputdata );
void MeasureThink();
private:
enum
{
MEASURE_POSITION = 0,
MEASURE_EYE_POSITION,
};
string_t m_strMeasureTarget;
string_t m_strMeasureReference;
string_t m_strTargetReference;
EHANDLE m_hMeasureTarget;
EHANDLE m_hMeasureReference;
EHANDLE m_hTarget;
EHANDLE m_hTargetReference;
float m_flScale;
int m_nMeasureType;
};
LINK_ENTITY_TO_CLASS( logic_measure_movement, CLogicMeasureMovement );
BEGIN_DATADESC( CLogicMeasureMovement )
DEFINE_KEYFIELD( m_strMeasureTarget, FIELD_STRING, "MeasureTarget" ),
DEFINE_KEYFIELD( m_strMeasureReference, FIELD_STRING, "MeasureReference" ),
DEFINE_KEYFIELD( m_strTargetReference, FIELD_STRING, "TargetReference" ),
DEFINE_KEYFIELD( m_flScale, FIELD_FLOAT, "TargetScale" ),
DEFINE_KEYFIELD( m_nMeasureType, FIELD_INTEGER, "MeasureType" ),
DEFINE_FIELD( m_hMeasureTarget, FIELD_EHANDLE ),
DEFINE_FIELD( m_hMeasureReference, FIELD_EHANDLE ),
DEFINE_FIELD( m_hTarget, FIELD_EHANDLE ),
DEFINE_FIELD( m_hTargetReference, FIELD_EHANDLE ),
DEFINE_INPUTFUNC( FIELD_STRING, "SetMeasureTarget", InputSetMeasureTarget ),
DEFINE_INPUTFUNC( FIELD_STRING, "SetMeasureReference", InputSetMeasureReference ),
DEFINE_INPUTFUNC( FIELD_STRING, "SetTarget", InputSetTarget ),
DEFINE_INPUTFUNC( FIELD_STRING, "SetTargetReference", InputSetTargetReference ),
DEFINE_INPUTFUNC( FIELD_FLOAT, "SetTargetScale", InputSetTargetScale ),
DEFINE_INPUTFUNC( FIELD_VOID, "Enable", InputEnable ),
DEFINE_INPUTFUNC( FIELD_VOID, "Disable", InputDisable ),
DEFINE_THINKFUNC( MeasureThink ),
END_DATADESC()
//-----------------------------------------------------------------------------
// Methods to change various targets
//-----------------------------------------------------------------------------
void CLogicMeasureMovement::Activate()
{
BaseClass::Activate();
SetMeasureTarget( STRING(m_strMeasureTarget) );
SetMeasureReference( STRING(m_strMeasureReference) );
SetTarget( STRING(m_target) );
SetTargetReference( STRING(m_strTargetReference) );
SetThink( &CLogicMeasureMovement::MeasureThink );
SetNextThink( gpGlobals->curtime + TICK_INTERVAL );
}
//-----------------------------------------------------------------------------
// Sets the name
//-----------------------------------------------------------------------------
void CLogicMeasureMovement::SetMeasureTarget( const char *pName )
{
m_hMeasureTarget = gEntList.FindEntityByName( NULL, pName );
if ( !m_hMeasureTarget )
{
if ( Q_strnicmp( STRING(m_strMeasureTarget), "!player", 8 ) )
{
Warning("logic_measure_movement: Unable to find measure target entity %s\n", pName );
}
}
}
void CLogicMeasureMovement::SetMeasureReference( const char *pName )
{
m_hMeasureReference = gEntList.FindEntityByName( NULL, pName );
if ( !m_hMeasureReference )
{
Warning("logic_measure_movement: Unable to find measure reference entity %s\n", pName );
}
}
void CLogicMeasureMovement::SetTarget( const char *pName )
{
m_hTarget = gEntList.FindEntityByName( NULL, pName );
if ( !m_hTarget )
{
Warning("logic_measure_movement: Unable to find movement target entity %s\n", pName );
}
}
void CLogicMeasureMovement::SetTargetReference( const char *pName )
{
m_hTargetReference = gEntList.FindEntityByName( NULL, pName );
if ( !m_hTargetReference )
{
Warning("logic_measure_movement: Unable to find movement reference entity %s\n", pName );
}
}
//-----------------------------------------------------------------------------
// Apply movement
//-----------------------------------------------------------------------------
void CLogicMeasureMovement::MeasureThink( )
{
// FIXME: This is a hack to make measuring !player simpler. The player isn't
// created at Activate time, so m_hMeasureTarget may be NULL because of that.
if ( !m_hMeasureTarget.Get() && !Q_strnicmp( STRING(m_strMeasureTarget), "!player", 8 ) )
{
SetMeasureTarget( STRING(m_strMeasureTarget) );
}
// Make sure all entities are valid
if ( m_hMeasureTarget.Get() && m_hMeasureReference.Get() && m_hTarget.Get() && m_hTargetReference.Get() )
{
matrix3x4_t matRefToMeasure, matWorldToMeasure;
switch( m_nMeasureType )
{
case MEASURE_POSITION:
MatrixInvert( m_hMeasureTarget->EntityToWorldTransform(), matWorldToMeasure );
break;
case MEASURE_EYE_POSITION:
AngleIMatrix( m_hMeasureTarget->EyeAngles(), m_hMeasureTarget->EyePosition(), matWorldToMeasure );
break;
// FIXME: Could add attachment point measurement here easily
}
ConcatTransforms( matWorldToMeasure, m_hMeasureReference->EntityToWorldTransform(), matRefToMeasure );
// Apply the scale factor
if ( ( m_flScale != 0.0f ) && ( m_flScale != 1.0f ) )
{
Vector vecTranslation;
MatrixGetColumn( matRefToMeasure, 3, vecTranslation );
vecTranslation /= m_flScale;
MatrixSetColumn( vecTranslation, 3, matRefToMeasure );
}
// Now apply the new matrix to the new reference point
matrix3x4_t matMeasureToRef, matNewTargetToWorld;
MatrixInvert( matRefToMeasure, matMeasureToRef );
ConcatTransforms( m_hTargetReference->EntityToWorldTransform(), matMeasureToRef, matNewTargetToWorld );
Vector vecNewOrigin;
QAngle vecNewAngles;
MatrixAngles( matNewTargetToWorld, vecNewAngles, vecNewOrigin );
m_hTarget->SetAbsOrigin( vecNewOrigin );
m_hTarget->SetAbsAngles( vecNewAngles );
}
SetNextThink( gpGlobals->curtime + TICK_INTERVAL );
}
//-----------------------------------------------------------------------------
// Enable, disable
//-----------------------------------------------------------------------------
void CLogicMeasureMovement::InputEnable( inputdata_t &inputdata )
{
SetThink( &CLogicMeasureMovement::MeasureThink );
SetNextThink( gpGlobals->curtime + TICK_INTERVAL );
}
void CLogicMeasureMovement::InputDisable( inputdata_t &inputdata )
{
SetThink( NULL );
}
//-----------------------------------------------------------------------------
// Methods to change various targets
//-----------------------------------------------------------------------------
void CLogicMeasureMovement::InputSetMeasureTarget( inputdata_t &inputdata )
{
m_strMeasureTarget = MAKE_STRING( inputdata.value.String() );
SetMeasureTarget( inputdata.value.String() );
SetTarget( STRING(m_target) );
SetTargetReference( STRING(m_strTargetReference) );
}
void CLogicMeasureMovement::InputSetMeasureReference( inputdata_t &inputdata )
{
m_strMeasureReference = MAKE_STRING( inputdata.value.String() );
SetMeasureReference( inputdata.value.String() );
}
void CLogicMeasureMovement::InputSetTarget( inputdata_t &inputdata )
{
m_target = MAKE_STRING( inputdata.value.String() );
SetTarget( inputdata.value.String() );
}
void CLogicMeasureMovement::InputSetTargetReference( inputdata_t &inputdata )
{
m_strTargetReference = MAKE_STRING( inputdata.value.String() );
SetTargetReference( inputdata.value.String() );
}
void CLogicMeasureMovement::InputSetTargetScale( inputdata_t &inputdata )
{
m_flScale = inputdata.value.Float();
}
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