96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
//====== Copyright © 1996-2004, Valve Corporation, All rights reserved. =======
|
|
//
|
|
// A class representing a procedural texture
|
|
//
|
|
//=============================================================================
|
|
#include "movieobjects/dmecycle.h"
|
|
#include "datamodel/dmelementfactoryhelper.h"
|
|
#include "tier0/dbg.h"
|
|
#include "mathlib/mathlib.h"
|
|
#include <math.h>
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Consts
|
|
//-----------------------------------------------------------------------------
|
|
#define INT_FLOAT_SCALE 0.000001f
|
|
//#define USE_NEW_WAY
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Expose this class to the scene database
|
|
//-----------------------------------------------------------------------------
|
|
IMPLEMENT_ELEMENT_FACTORY( DmeCycle, CDmeCycle );
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Implementation
|
|
//-----------------------------------------------------------------------------
|
|
void CDmeCycle::OnConstruction()
|
|
{
|
|
m_cycleRate.Init( this, "cycleRate" );
|
|
m_prevCycle.Init( this, "prevCycle" );
|
|
m_lastCycleResetTime.Init( this, "lastCycleResetTime" );
|
|
m_lastCycleResetValue.Init( this, "lastCycleResetValue" );
|
|
}
|
|
|
|
void CDmeCycle::OnDestruction()
|
|
{
|
|
}
|
|
|
|
void CDmeCycle::SetCycleRate( float flCycleRate )
|
|
{
|
|
m_cycleRate = flCycleRate;
|
|
}
|
|
|
|
void CDmeCycle::SetPrevCycle( float flPrevCycle )
|
|
{
|
|
m_prevCycle = (int)(flPrevCycle / INT_FLOAT_SCALE);
|
|
}
|
|
|
|
void CDmeCycle::SetCycle( float flCycle, float flCurTime )
|
|
{
|
|
#ifdef USE_NEW_WAY
|
|
float const flCycleDelta = fabs( flCycle - GetPrevCycle() );
|
|
|
|
// NOTE: Overlays depend on this logic - record if cycle==0. There may be a better way to
|
|
// do this, but if an overlay is at 0 while it's dormant (ie its weight==0), we need to
|
|
// record at the moment its weight>0.
|
|
bool bForceCycleRecord = flCycle == 0.0f;
|
|
|
|
if ( bForceCycleRecord || flCycleDelta >= 0.1f )
|
|
{
|
|
// Store this time
|
|
m_lastCycleResetTime = (int)(flCurTime / INT_FLOAT_SCALE);
|
|
|
|
// For this method, m_cycle is only recorded when a reset of some kind has occurred
|
|
m_lastCycleResetValue = (int)(flCycle / INT_FLOAT_SCALE);
|
|
|
|
DevMsg(" resetting cycle at: time=%f cycle=%f\n", flCurTime, flCycle );
|
|
}
|
|
#else
|
|
m_lastCycleResetValue = (int)(flCycle / INT_FLOAT_SCALE);
|
|
#endif
|
|
|
|
// Store as previous cycle
|
|
SetPrevCycle( flCycle );
|
|
}
|
|
|
|
float CDmeCycle::GetCycleRate() const
|
|
{
|
|
return m_cycleRate;
|
|
}
|
|
|
|
float CDmeCycle::GetPrevCycle() const
|
|
{
|
|
return m_prevCycle * INT_FLOAT_SCALE;
|
|
}
|
|
|
|
float CDmeCycle::GetCycle( float flCurTime ) const
|
|
{
|
|
#ifdef USE_NEW_WAY
|
|
float const dt = flCurTime - INT_FLOAT_SCALE * m_lastCycleResetTime;
|
|
float const flCycle = INT_FLOAT_SCALE * m_lastCycleResetValue + GetCycleRate() * dt; Assert( flCycle >= 0.0f && flCycle <= 2.0f );
|
|
return fmod( flCycle, 1.0f ); // In case it's 1.0f
|
|
#else
|
|
return INT_FLOAT_SCALE * m_lastCycleResetValue;
|
|
#endif
|
|
}
|