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game/client/baseanimatedtextureproxy.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "baseanimatedtextureproxy.h"
+#include "materialsystem/imaterial.h"
+#include "materialsystem/imaterialvar.h"
+#include "materialsystem/itexture.h"
+#include "tier1/KeyValues.h"
+#include "toolframework_client.h"
+#include "tier0/minidump.h"
+#include "tier0/stacktools.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+// forward declarations
+void ToolFramework_RecordMaterialParams( IMaterial *pMaterial );
+
+//-----------------------------------------------------------------------------
+// Constructor, destructor: 
+//-----------------------------------------------------------------------------
+
+CBaseAnimatedTextureProxy::CBaseAnimatedTextureProxy()
+{
+	Cleanup();
+}
+
+CBaseAnimatedTextureProxy::~CBaseAnimatedTextureProxy()
+{
+	Cleanup();
+}
+
+
+//-----------------------------------------------------------------------------
+// Initialization, shutdown
+//-----------------------------------------------------------------------------
+bool CBaseAnimatedTextureProxy::Init( IMaterial *pMaterial, KeyValues *pKeyValues )
+{
+	char const* pAnimatedTextureVarName = pKeyValues->GetString( "animatedTextureVar" );
+
+	if( pAnimatedTextureVarName )
+	{
+		bool foundVar;
+
+		m_AnimatedTextureVar = pMaterial->FindVar( pAnimatedTextureVarName, &foundVar, false );
+		if( foundVar )
+		{
+			char const* pAnimatedTextureFrameNumVarName = pKeyValues->GetString( "animatedTextureFrameNumVar" );
+
+			if( pAnimatedTextureFrameNumVarName )
+			{
+				m_AnimatedTextureFrameNumVar = pMaterial->FindVar( pAnimatedTextureFrameNumVarName, &foundVar, false );
+
+				if( foundVar )
+				{
+					m_FrameRate = pKeyValues->GetFloat( "animatedTextureFrameRate", 15 );
+					m_WrapAnimation = !pKeyValues->GetInt( "animationNoWrap", 0 );
+					return true;
+				}
+			}
+		}
+	}
+
+	// Error - null out pointers.
+	Cleanup();
+	return false;
+}
+
+void CBaseAnimatedTextureProxy::Cleanup()
+{
+	m_AnimatedTextureVar = NULL;
+	m_AnimatedTextureFrameNumVar = NULL;
+}
+
+
+//-----------------------------------------------------------------------------
+// Does the dirty deed
+//-----------------------------------------------------------------------------
+void CBaseAnimatedTextureProxy::OnBind( void *pEntity )
+{
+	Assert ( m_AnimatedTextureVar );
+
+	if( m_AnimatedTextureVar->GetType() != MATERIAL_VAR_TYPE_TEXTURE )
+	{
+		return;
+	}
+	ITexture *pTexture;
+	pTexture = m_AnimatedTextureVar->GetTextureValue();
+	int numFrames = pTexture->GetNumAnimationFrames();
+
+	if ( numFrames <= 0 )
+	{
+		Assert( !"0 frames in material calling animated texture proxy" );
+		return;
+	}
+
+	// NOTE: Must not use relative time based methods here
+	// because the bind proxy can be called many times per frame.
+	// Prevent multiple Wrap callbacks to be sent for no wrap mode
+	float startTime = GetAnimationStartTime(pEntity);
+	float deltaTime = gpGlobals->curtime - startTime;
+	float prevTime = deltaTime - gpGlobals->frametime;
+
+	// Clamp..
+	if (deltaTime < 0.0f)
+		deltaTime = 0.0f;
+	if (prevTime < 0.0f)
+		prevTime = 0.0f;
+
+	float frame = m_FrameRate * deltaTime;	
+	float prevFrame = m_FrameRate * prevTime;
+
+	int intFrame = ((int)frame) % numFrames; 
+	int intPrevFrame = ((int)prevFrame) % numFrames;
+
+	// Report wrap situation...
+	if (intPrevFrame > intFrame)
+	{
+		if (m_WrapAnimation)
+		{
+			AnimationWrapped( pEntity );
+		}
+		else
+		{
+			// Only sent the wrapped message once.
+			// when we're in non-wrapping mode
+			if (prevFrame < numFrames)
+				AnimationWrapped( pEntity );
+			intFrame = numFrames - 1;
+		}
+	}
+
+	m_AnimatedTextureFrameNumVar->SetIntValue( intFrame );
+
+	if ( ToolsEnabled() )
+	{
+		ToolFramework_RecordMaterialParams( GetMaterial() );
+	}
+}
+
+IMaterial *CBaseAnimatedTextureProxy::GetMaterial()
+{
+	return m_AnimatedTextureVar->GetOwningMaterial();
+}