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game/client/ivieweffects.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Workfile:     $
+// $Date:         $
+//
+//-----------------------------------------------------------------------------
+// $Log: $
+//
+// $NoKeywords: $
+//=============================================================================//
+#if !defined( IVIEWEFFECTS_H )
+#define IVIEWEFFECTS_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+class Vector;
+class QAngle;
+class bf_read;
+
+//-----------------------------------------------------------------------------
+// Purpose: Apply effects to view origin/angles, etc.  Screen fade and shake
+//-----------------------------------------------------------------------------
+abstract_class IViewEffects
+{
+public:
+	// Initialize subsystem
+	virtual void	Init( void ) = 0;
+	// Initialize after each level change
+	virtual void	LevelInit( void ) = 0;
+	// Called each frame to determine the current view fade parameters ( color and alpha )
+	virtual void	GetFadeParams( unsigned char *r, unsigned char *g, unsigned char *b, unsigned char *a, bool *blend ) = 0;
+	// Apply directscreen shake
+	virtual void	Shake( ScreenShake_t &data ) = 0;
+	// Apply direct screen fade
+	virtual void	Fade( ScreenFade_t &data ) = 0;
+	// Clear all permanent fades in our fade list
+	virtual void	ClearPermanentFades( void ) = 0;
+	// Clear all fades in our fade list
+	virtual void	ClearAllFades( void ) = 0;
+	// Compute screen shake values for this frame
+	virtual void	CalcShake( void ) = 0;
+	// Apply those values to the passed in vector(s).
+	virtual void	ApplyShake( Vector& origin, QAngle& angles, float factor ) = 0;
+	// Save / Restore
+	virtual void	Save( ISave *pSave ) = 0;
+	virtual void	Restore( IRestore *pRestore, bool ) = 0;
+};
+
+extern IViewEffects *vieweffects;
+
+#endif // IVIEWEFFECTS_H