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c_func_conveyor.cpp
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//===========================================================================//
#include "cbase.h"
#include "materialsystem/imaterialproxy.h"
#include "materialsystem/imaterial.h"
#include "materialsystem/imaterialvar.h"
#include "functionproxy.h"
#include <KeyValues.h>
#include "mathlib/vmatrix.h"
#include "toolframework_client.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
// forward declarations
void ToolFramework_RecordMaterialParams( IMaterial *pMaterial );
class C_FuncConveyor : public C_BaseEntity
{
public:
DECLARE_CLASS( C_FuncConveyor, C_BaseEntity );
DECLARE_CLIENTCLASS();
C_FuncConveyor();
float GetConveyorSpeed() { return m_flConveyorSpeed; }
private:
float m_flConveyorSpeed;
};
IMPLEMENT_CLIENTCLASS_DT( C_FuncConveyor, DT_FuncConveyor, CFuncConveyor )
RecvPropFloat( RECVINFO( m_flConveyorSpeed ) ),
END_RECV_TABLE()
C_FuncConveyor::C_FuncConveyor()
{
m_flConveyorSpeed = 0.0;
}
class CConveyorMaterialProxy : public IMaterialProxy
{
public:
CConveyorMaterialProxy();
virtual ~CConveyorMaterialProxy();
virtual bool Init( IMaterial *pMaterial, KeyValues *pKeyValues );
virtual void OnBind( void *pC_BaseEntity );
virtual void Release( void ) { delete this; }
virtual IMaterial *GetMaterial();
private:
C_BaseEntity *BindArgToEntity( void *pArg );
IMaterialVar *m_pTextureScrollVar;
};
CConveyorMaterialProxy::CConveyorMaterialProxy()
{
m_pTextureScrollVar = NULL;
}
CConveyorMaterialProxy::~CConveyorMaterialProxy()
{
}
bool CConveyorMaterialProxy::Init( IMaterial *pMaterial, KeyValues *pKeyValues )
{
char const* pScrollVarName = pKeyValues->GetString( "textureScrollVar" );
if( !pScrollVarName )
return false;
bool foundVar;
m_pTextureScrollVar = pMaterial->FindVar( pScrollVarName, &foundVar, false );
if( !foundVar )
return false;
return true;
}
C_BaseEntity *CConveyorMaterialProxy::BindArgToEntity( void *pArg )
{
IClientRenderable *pRend = (IClientRenderable *)pArg;
return pRend->GetIClientUnknown()->GetBaseEntity();
}
void CConveyorMaterialProxy::OnBind( void *pC_BaseEntity )
{
if( !pC_BaseEntity )
return;
C_BaseEntity *pEntity = BindArgToEntity( pC_BaseEntity );
if ( !pEntity )
return;
C_FuncConveyor *pConveyor = dynamic_cast<C_FuncConveyor*>(pEntity);
if ( !pConveyor )
return;
if ( !m_pTextureScrollVar )
{
return;
}
float flConveyorSpeed = pConveyor->GetConveyorSpeed();
float flRate = fabsf( flConveyorSpeed ) / 128.0;
float flAngle = (flConveyorSpeed >= 0) ? 180 : 0;
float sOffset = gpGlobals->curtime * cos( flAngle * ( M_PI / 180.0f ) ) * flRate;
float tOffset = gpGlobals->curtime * sin( flAngle * ( M_PI / 180.0f ) ) * flRate;
// make sure that we are positive
if( sOffset < 0.0f )
{
sOffset += 1.0f + -( int )sOffset;
}
if( tOffset < 0.0f )
{
tOffset += 1.0f + -( int )tOffset;
}
// make sure that we are in a [0,1] range
sOffset = sOffset - ( int )sOffset;
tOffset = tOffset - ( int )tOffset;
if (m_pTextureScrollVar->GetType() == MATERIAL_VAR_TYPE_MATRIX)
{
VMatrix mat;
MatrixBuildTranslation( mat, sOffset, tOffset, 0.0f );
m_pTextureScrollVar->SetMatrixValue( mat );
}
else
{
m_pTextureScrollVar->SetVecValue( sOffset, tOffset, 0.0f );
}
if ( ToolsEnabled() )
{
ToolFramework_RecordMaterialParams( GetMaterial() );
}
}
IMaterial *CConveyorMaterialProxy::GetMaterial()
{
return m_pTextureScrollVar ? m_pTextureScrollVar->GetOwningMaterial() : NULL;
}
EXPOSE_INTERFACE( CConveyorMaterialProxy, IMaterialProxy, "ConveyorScroll" IMATERIAL_PROXY_INTERFACE_VERSION );