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117 lines
2.8 KiB
117 lines
2.8 KiB
//========= Copyright Valve Corporation, All rights reserved. ============// |
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// |
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// Purpose: |
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// |
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// $NoKeywords: $ |
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//=============================================================================// |
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#include "cbase.h" |
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#include "proxyentity.h" |
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#include "materialsystem/imaterial.h" |
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#include "materialsystem/imaterialvar.h" |
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#include "c_baseobject.h" |
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#include <KeyValues.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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// Purpose: |
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//----------------------------------------------------------------------------- |
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class CObjectBuildAlphaProxy : public CEntityMaterialProxy |
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{ |
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public: |
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CObjectBuildAlphaProxy(); |
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virtual ~CObjectBuildAlphaProxy(); |
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virtual bool Init( IMaterial *pMaterial, KeyValues* pKeyValues ); |
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virtual void OnBind( C_BaseEntity *pC_BaseEntity ); |
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private: |
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IMaterialVar* m_pAlphaVar; |
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float buildstart; |
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float buildend; |
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}; |
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//----------------------------------------------------------------------------- |
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// Constructor, destructor |
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//----------------------------------------------------------------------------- |
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CObjectBuildAlphaProxy::CObjectBuildAlphaProxy() |
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{ |
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m_pAlphaVar = 0; |
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} |
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CObjectBuildAlphaProxy::~CObjectBuildAlphaProxy() |
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{ |
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} |
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//----------------------------------------------------------------------------- |
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// Init baby... |
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//----------------------------------------------------------------------------- |
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bool CObjectBuildAlphaProxy::Init( IMaterial *pMaterial, KeyValues* pKeyValues ) |
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{ |
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bool foundVar; |
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m_pAlphaVar = pMaterial->FindVar( "$alpha", &foundVar, false ); |
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if( !foundVar ) |
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{ |
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m_pAlphaVar = 0; |
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} |
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buildstart = pKeyValues->GetFloat( "buildstart", 1.0f ); |
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buildend = pKeyValues->GetFloat( "buildfinish", 1.0f ); |
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return true; |
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} |
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//----------------------------------------------------------------------------- |
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// Set the appropriate texture... |
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//----------------------------------------------------------------------------- |
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void CObjectBuildAlphaProxy::OnBind( C_BaseEntity *pEntity ) |
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{ |
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if( !m_pAlphaVar ) |
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return; |
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// It needs to be a TF2 C_BaseObject to have this proxy applied |
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C_BaseObject *pObject = dynamic_cast< C_BaseObject * >( pEntity ); |
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if ( !pObject ) |
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return; |
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float build_amount = pObject->GetCycle(); //pObject->GetPercentageConstructed(); |
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float frac; |
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if ( build_amount <= buildstart ) |
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{ |
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frac = 0.0f; |
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} |
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else if ( build_amount >= buildend ) |
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{ |
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frac = 1.0f; |
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} |
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else |
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{ |
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// Avoid div by zero |
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if ( buildend == buildstart ) |
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{ |
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frac = 1.0f; |
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} |
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else |
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{ |
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frac = ( build_amount - buildstart ) / ( buildend - buildstart ); |
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frac = clamp( frac, 0.0f, 1.0f ); |
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} |
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} |
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if ( !pObject->IsBuilding() ) |
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{ |
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frac = 1.0f; |
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} |
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m_pAlphaVar->SetFloatValue( frac ); |
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} |
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EXPOSE_INTERFACE( CObjectBuildAlphaProxy, IMaterialProxy, "TFObjectBuildAlpha" IMATERIAL_PROXY_INTERFACE_VERSION ); |
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