/***
*
*	Copyright (c) 1996-2002, Valve LLC. All rights reserved.
*	
*	This product contains software technology licensed from Id 
*	Software, Inc. ("Id Technology").  Id Technology (c) 1996 Id Software, Inc. 
*	All Rights Reserved.
*
*   Use, distribution, and modification of this source code and/or resulting
*   object code is restricted to non-commercial enhancements to products from
*   Valve LLC.  All other use, distribution, or modification is prohibited
*   without written permission from Valve LLC.
*
****/
#ifndef SHAKE_H
#define SHAKE_H

// Screen / View effects

// screen shake
extern int gmsgShake;

// This structure is sent over the net to describe a screen shake event
typedef struct
{
	unsigned short	amplitude;		// FIXED 4.12 amount of shake
	unsigned short 	duration;		// FIXED 4.12 seconds duration
	unsigned short	frequency;		// FIXED 8.8 noise frequency (low frequency is a jerk,high frequency is a rumble)
} ScreenShake;

extern void V_ApplyShake( float *origin, float *angles, float factor );
extern void V_CalcShake( void );
extern int V_ScreenShake( const char *pszName, int iSize, void *pbuf );
extern int V_ScreenFade( const char *pszName, int iSize, void *pbuf );


// Fade in/out
extern int gmsgFade;

#define FFADE_IN			0x0000		// Just here so we don't pass 0 into the function
#define FFADE_OUT			0x0001		// Fade out (not in)
#define FFADE_MODULATE		0x0002		// Modulate (don't blend)
#define FFADE_STAYOUT		0x0004		// ignores the duration, stays faded out until new ScreenFade message received
#define FFADE_LONGFADE		0x0008		// used to indicate the fade can be longer than 16 seconds (added for czero)


// This structure is sent over the net to describe a screen fade event
typedef struct
{
	unsigned short 	duration;		// FIXED 4.12 seconds duration
	unsigned short 	holdTime;		// FIXED 4.12 seconds duration until reset (fade & hold)
	short			fadeFlags;		// flags
	byte			r, g, b, a;		// fade to color ( max alpha )
} ScreenFade;

#endif		// SHAKE_H

