1 files changed, 147 insertions, 0 deletions
diff --git a/game/client/c_func_areaportalwindow.cpp b/game/client/c_func_areaportalwindow.cpp
new file mode 100644
index 0000000..b910e7a
--- /dev/null
+++ b/game/client/c_func_areaportalwindow.cpp
@@ -0,0 +1,147 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+#include "cbase.h"
+#include "view.h"
+#include "model_types.h"
+#include "ivrenderview.h"
+#include "engine/ivmodelinfo.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+#define VIEWER_PADDING	80.0f
+
+class C_FuncAreaPortalWindow : public C_BaseEntity
+{
+public:
+	DECLARE_CLIENTCLASS();
+	DECLARE_CLASS( C_FuncAreaPortalWindow, C_BaseEntity );
+
+
+// Overrides.
+public:
+
+	virtual void	ComputeFxBlend();
+	virtual bool	IsTransparent();
+	virtual int		DrawModel( int flags );
+	virtual bool	ShouldReceiveProjectedTextures( int flags );
+
+private:
+
+	float			GetDistanceBlend();
+
+
+
+public:
+	float			m_flFadeStartDist;	// Distance at which it starts fading (when <= this, alpha=m_flTranslucencyLimit).
+	float			m_flFadeDist;		// Distance at which it becomes solid.
+
+	// 0-1 value - minimum translucency it's allowed to get to.
+	float			m_flTranslucencyLimit;
+
+	int				m_iBackgroundModelIndex;
+};
+
+
+
+IMPLEMENT_CLIENTCLASS_DT( C_FuncAreaPortalWindow, DT_FuncAreaPortalWindow, CFuncAreaPortalWindow )
+	RecvPropFloat( RECVINFO( m_flFadeStartDist ) ),
+	RecvPropFloat( RECVINFO( m_flFadeDist ) ),
+	RecvPropFloat( RECVINFO( m_flTranslucencyLimit ) ),
+	RecvPropInt( RECVINFO( m_iBackgroundModelIndex ) )
+END_RECV_TABLE()
+
+
+
+void C_FuncAreaPortalWindow::ComputeFxBlend()
+{
+	// We reset our blend down below so pass anything except 0 to the renderer.
+	m_nRenderFXBlend = 255;
+
+#ifdef _DEBUG
+	m_nFXComputeFrame = gpGlobals->framecount;
+#endif
+
+}
+
+
+bool C_FuncAreaPortalWindow::IsTransparent()
+{
+	return true;
+}
+
+
+int C_FuncAreaPortalWindow::DrawModel( int flags )
+{
+	if ( !m_bReadyToDraw )
+		return 0;
+
+	if( !GetModel() )
+		return 0;
+
+	// Make sure we're a brush model.
+	int modelType = modelinfo->GetModelType( GetModel() );
+	if( modelType != mod_brush )
+		return 0;
+
+	// Draw the fading version.
+	render->SetBlend( GetDistanceBlend() );
+
+	DrawBrushModelMode_t mode = DBM_DRAW_ALL;
+	if ( flags & STUDIO_TWOPASS )
+	{
+		mode = ( flags & STUDIO_TRANSPARENCY ) ? DBM_DRAW_TRANSLUCENT_ONLY : DBM_DRAW_OPAQUE_ONLY;
+	}
+
+	render->DrawBrushModelEx( 
+		this, 
+		(model_t *)GetModel(), 
+		GetAbsOrigin(), 
+		GetAbsAngles(), 
+		mode );
+
+	// Draw the optional foreground model next.
+	// Only use the alpha in the texture from the thing in the front.
+	if (m_iBackgroundModelIndex >= 0)
+	{
+		render->SetBlend( 1 );
+		model_t *pBackground = ( model_t * )modelinfo->GetModel( m_iBackgroundModelIndex );
+		if( pBackground && modelinfo->GetModelType( pBackground ) == mod_brush )
+		{
+			render->DrawBrushModelEx( 
+				this, 
+				pBackground, 
+				GetAbsOrigin(), 
+				GetAbsAngles(), 
+				mode );
+		}
+	}
+
+	return 1;
+}
+
+
+float C_FuncAreaPortalWindow::GetDistanceBlend()
+{
+	// Get the viewer's distance to us.
+	float flDist = CollisionProp()->CalcDistanceFromPoint( CurrentViewOrigin() );
+	C_BasePlayer *local = C_BasePlayer::GetLocalPlayer();
+	if ( local )
+	{
+		flDist *= local->GetFOVDistanceAdjustFactor();
+	}
+	
+	return RemapValClamped( flDist, m_flFadeStartDist, m_flFadeDist, m_flTranslucencyLimit, 1 );
+}
+
+bool C_FuncAreaPortalWindow::ShouldReceiveProjectedTextures( int flags )
+{
+	return false;
+}
+
+