stvoy-sp-sdk/cgame/cg_view.cpp

// cg_view.c -- setup all the parameters (position, angle, etc)
// for a 3D rendering
#include "cg_local.h"
#include "fx_public.h"

float cg_zoomFov;

#define CG_CAM_ABOVE	2

/*
=============================================================================

  MODEL TESTING

The viewthing and gun positioning tools from Q2 have been integrated and
enhanced into a single model testing facility.

Model viewing can begin with either "testmodel <modelname>" or "testgun <modelname>".

The names must be the full pathname after the basedir, like 
"models/weapons/v_launch/tris.md3" or "players/male/tris.md3"

Testmodel will create a fake entity 100 units in front of the current view
position, directly facing the viewer.  It will remain immobile, so you can
move around it to view it from different angles.

Testgun will cause the model to follow the player around and supress the real
view weapon model.  The default frame 0 of most guns is completely off screen,
so you will probably have to cycle a couple frames to see it.

"nextframe", "prevframe", "nextskin", and "prevskin" commands will change the
frame or skin of the testmodel.  These are bound to F5, F6, F7, and F8 in
q3default.cfg.

If a gun is being tested, the "gun_x", "gun_y", and "gun_z" variables will let
you adjust the positioning.

Note that none of the model testing features update while the game is paused, so
it may be convenient to test with deathmatch set to 1 so that bringing down the
console doesn't pause the game.

=============================================================================
*/

/*
=================
CG_TestModel_f

Creates an entity in front of the current position, which
can then be moved around
=================
*/
void CG_TestModel_f (void) {
	vec3_t		angles;

	memset( &cg.testModelEntity, 0, sizeof(cg.testModelEntity) );
	if ( cgi_Argc() < 2 ) {
		return;
	}

	Q_strncpyz (cg.testModelName, CG_Argv( 1 ), MAX_QPATH );
	cg.testModelEntity.hModel = cgi_R_RegisterModel( cg.testModelName );

	if ( cgi_Argc() == 3 ) {
		cg.testModelEntity.backlerp = atof( CG_Argv( 2 ) );
		cg.testModelEntity.frame = 1;
		cg.testModelEntity.oldframe = 0;
	}
	if (! cg.testModelEntity.hModel ) {
		CG_Printf( "Can't register model\n" );
		return;
	}

	VectorMA( cg.refdef.vieworg, 100, cg.refdef.viewaxis[0], cg.testModelEntity.origin );

	angles[PITCH] = 0;
	angles[YAW] = 180 + cg.refdefViewAngles[1];
	angles[ROLL] = 0;

	AnglesToAxis( angles, cg.testModelEntity.axis );
	cg.testGun = qfalse;
}

/*
=================
CG_TestGun_f

Replaces the current view weapon with the given model
=================
*/
void CG_TestGun_f (void) {
	CG_TestModel_f();
	cg.testGun = qtrue;
	cg.testModelEntity.renderfx = RF_MINLIGHT | RF_DEPTHHACK | RF_FIRST_PERSON;
}


void CG_TestModelNextFrame_f (void) {
	cg.testModelEntity.frame++;
	CG_Printf( "frame %i\n", cg.testModelEntity.frame );
}

void CG_TestModelPrevFrame_f (void) {
	cg.testModelEntity.frame--;
	if ( cg.testModelEntity.frame < 0 ) {
		cg.testModelEntity.frame = 0;
	}
	CG_Printf( "frame %i\n", cg.testModelEntity.frame );
}

void CG_TestModelNextSkin_f (void) {
	cg.testModelEntity.skinNum++;
	CG_Printf( "skin %i\n", cg.testModelEntity.skinNum );
}

void CG_TestModelPrevSkin_f (void) {
	cg.testModelEntity.skinNum--;
	if ( cg.testModelEntity.skinNum < 0 ) {
		cg.testModelEntity.skinNum = 0;
	}
	CG_Printf( "skin %i\n", cg.testModelEntity.skinNum );
}

static void CG_AddTestModel (void) {
	int		i;

	// re-register the model, because the level may have changed	
/*	cg.testModelEntity.hModel = cgi_R_RegisterModel( cg.testModelName );
	if (! cg.testModelEntity.hModel ) {
		CG_Printf ("Can't register model\n");
		return;
	}
*/
	// if testing a gun, set the origin reletive to the view origin
	if ( cg.testGun ) {
		VectorCopy( cg.refdef.vieworg, cg.testModelEntity.origin );
		VectorCopy( cg.refdef.viewaxis[0], cg.testModelEntity.axis[0] );
		VectorCopy( cg.refdef.viewaxis[1], cg.testModelEntity.axis[1] );
		VectorCopy( cg.refdef.viewaxis[2], cg.testModelEntity.axis[2] );

		// allow the position to be adjusted
		for (i=0 ; i<3 ; i++) {
			cg.testModelEntity.origin[i] += cg.refdef.viewaxis[0][i] * cg_gun_x.value;
			cg.testModelEntity.origin[i] += cg.refdef.viewaxis[1][i] * cg_gun_y.value;
			cg.testModelEntity.origin[i] += cg.refdef.viewaxis[2][i] * cg_gun_z.value;
		}
	}

	cgi_R_AddRefEntityToScene( &cg.testModelEntity );
}



//============================================================================


/*
=================
CG_CalcVrect

Sets the coordinates of the rendered window
=================
*/
void CG_CalcVrect (void) {
	int		size;

	// the intermission should allways be full screen
	if ( cg.snap && cg.snap->ps.pm_type == PM_INTERMISSION ) {
		size = 100;
	} else {
		// bound normal viewsize
		if (cg_viewsize.integer < 30) {
			cgi_Cvar_Set ("cg_viewsize","30");
			size = 30;
		} else if (cg_viewsize.integer > 100) {
			cgi_Cvar_Set ("cg_viewsize","100");
			size = 100;
		} else {
			size = cg_viewsize.integer;
		}

	}
	cg.refdef.width = cgs.glconfig.vidWidth * size * 0.01;
	cg.refdef.width &= ~1;

	cg.refdef.height = cgs.glconfig.vidHeight * size * 0.01;
	cg.refdef.height &= ~1;

	cg.refdef.x = (cgs.glconfig.vidWidth - cg.refdef.width) * 0.5;
	cg.refdef.y = (cgs.glconfig.vidHeight - cg.refdef.height) * 0.5;
}

//==============================================================================


/*
===============
CG_OffsetThirdPersonView

===============
*/
#define	FOCUS_DISTANCE	512
static void CG_OffsetThirdPersonView( void ) {
	vec3_t		forward, right, up;
	vec3_t		view;
	vec3_t		focusAngles;
	trace_t		trace;
	static vec3_t	mins = { -4, -4, -4 };
	static vec3_t	maxs = { 4, 4, 4 };
	vec3_t		focusPoint;
	float		focusDist;
	float		forwardScale, sideScale;

	cg.refdef.vieworg[2] += cg.predicted_player_state.viewheight;

	VectorCopy( cg.refdefViewAngles, focusAngles );

	// if dead, look at killer
	if ( cg.predicted_player_state.stats[STAT_HEALTH] <= 0 ) {
		focusAngles[YAW] = cg.predicted_player_state.stats[STAT_DEAD_YAW];
		cg.refdefViewAngles[YAW] = cg.predicted_player_state.stats[STAT_DEAD_YAW];
	}

	if ( focusAngles[PITCH] > 45 ) {
		focusAngles[PITCH] = 45;		// don't go too far overhead
	}
	AngleVectors( focusAngles, forward, NULL, NULL );

	VectorMA( cg.refdef.vieworg, FOCUS_DISTANCE, forward, focusPoint );

	VectorCopy( cg.refdef.vieworg, view );

	view[2] += 8;

	cg.refdefViewAngles[PITCH] *= 0.5;

	AngleVectors( cg.refdefViewAngles, forward, right, up );

	forwardScale = cos( cg_thirdPersonAngle.value / 180 * M_PI );
	sideScale = sin( cg_thirdPersonAngle.value / 180 * M_PI );
	VectorMA( view, -cg_thirdPersonRange.value * forwardScale, forward, view );
	VectorMA( view, -cg_thirdPersonRange.value * sideScale, right, view );

	// trace a ray from the origin to the viewpoint to make sure the view isn't
	// in a solid block.  Use an 8 by 8 block to prevent the view from near clipping anything

	CG_Trace( &trace, cg.refdef.vieworg, mins, maxs, view, cg.predicted_player_state.clientNum, MASK_SOLID );

	if ( trace.fraction != 1.0 ) {
		VectorCopy( trace.endpos, view );
		view[2] += (1.0 - trace.fraction) * 32;
		// try another trace to this position, because a tunnel may have the ceiling
		// close enogh that this is poking out

		CG_Trace( &trace, cg.refdef.vieworg, mins, maxs, view, cg.predicted_player_state.clientNum, MASK_SOLID );
		VectorCopy( trace.endpos, view );
	}


	VectorCopy( view, cg.refdef.vieworg );

	// select pitch to look at focus point from vieword
	VectorSubtract( focusPoint, cg.refdef.vieworg, focusPoint );
	focusDist = sqrt( focusPoint[0] * focusPoint[0] + focusPoint[1] * focusPoint[1] );
	if ( focusDist < 1 ) {
		focusDist = 1;	// should never happen
	}
	cg.refdefViewAngles[PITCH] = -180 / M_PI * atan2( focusPoint[2], focusDist );
	cg.refdefViewAngles[YAW] -= cg_thirdPersonAngle.value;
}


#define MIN_CAMERA_HEIGHT	75
#define MIN_CAMERA_PITCH	40
#define MAX_CAMERA_PITCH	90

//----------------------------------------------
static void CG_OffsetThirdPersonOverheadView( void ) {
	vec3_t		view, angs;
	trace_t		trace;
	static vec3_t	mins = { -4, -4, -4 };
	static vec3_t	maxs = { 4, 4, 4 };

	VectorCopy( cg.refdef.vieworg, view );

	// Move straight up from the player, making sure to always go at least the min camera height, 
	//	otherwise, the camera will clip into the head of the player.
	if ( cg_thirdPersonRange.value < MIN_CAMERA_HEIGHT )
	{
		view[2] += MIN_CAMERA_HEIGHT;
	}
	else
	{
		view[2] += cg_thirdPersonRange.value;
	}

	// Now adjust the camera angles, but we shouldn't adjust the viewAngles...only the viewAxis
	VectorCopy( cg.refdefViewAngles, angs );
	angs[PITCH] = cg_thirdPersonAngle.integer;

	// Simple clamp to weed out any really obviously nasty angles
	if ( angs[PITCH] < MIN_CAMERA_PITCH )
	{
		angs[PITCH] = MIN_CAMERA_PITCH;
	}
	else if ( angs[PITCH] > MAX_CAMERA_PITCH )
	{
		angs[PITCH] = MAX_CAMERA_PITCH;
	}

	// Convert our new desired camera angles and store them where they will get used by the engine 
	//	when setting up the actual camera view.
	AnglesToAxis( angs, cg.refdef.viewaxis );
	cg.refdefViewAngles[PITCH] = 0;
	g_entities[0].client->ps.delta_angles[PITCH] = 0;
	
	// Trace a ray from the origin to the viewpoint to make sure the view isn't
	//	in a solid block.
	CG_Trace( &trace, cg.refdef.vieworg, mins, maxs, view, cg.predicted_player_state.clientNum, MASK_SOLID );

	if ( trace.fraction != 1.0 ) 
	{
		VectorCopy( trace.endpos, cg.refdef.vieworg );
	}
	else
	{
		VectorCopy( view, cg.refdef.vieworg );
	}
}

// this causes a compiler bug on mac MrC compiler
static void CG_StepOffset( void ) {
	int		timeDelta;
	
	// smooth out stair climbing
	timeDelta = cg.time - cg.stepTime;
	if ( timeDelta < STEP_TIME ) {
		cg.refdef.vieworg[2] -= cg.stepChange 
			* (STEP_TIME - timeDelta) / STEP_TIME;
	}
}

/*
===============
CG_OffsetFirstPersonView

===============
*/
static void CG_OffsetFirstPersonView( void ) {
	float			*origin;
	float			*angles;
	float			bob;
	float			ratio;
	float			delta;
	float			speed;
	float			f;
	vec3_t			predictedVelocity;
	int				timeDelta;
	
	if ( cg.snap->ps.pm_type == PM_INTERMISSION ) {
		return;
	}

	origin = cg.refdef.vieworg;
	angles = cg.refdefViewAngles;

	// if dead, fix the angle and don't add any kick
	if ( cg.snap->ps.stats[STAT_HEALTH] <= 0 ) {
		angles[ROLL] = 40;
		angles[PITCH] = -15;
		angles[YAW] = cg.snap->ps.stats[STAT_DEAD_YAW];
		origin[2] += cg.predicted_player_state.viewheight;
		return;
	}

	// add angles based on weapon kick
	VectorAdd (angles, cg.kick_angles, angles);

	// add angles based on damage kick
	if ( cg.damageTime ) {
		ratio = cg.time - cg.damageTime;
		if ( ratio < DAMAGE_DEFLECT_TIME ) {
			ratio /= DAMAGE_DEFLECT_TIME;
			angles[PITCH] += ratio * cg.v_dmg_pitch;
			angles[ROLL] += ratio * cg.v_dmg_roll;
		} else {
			ratio = 1.0 - ( ratio - DAMAGE_DEFLECT_TIME ) / DAMAGE_RETURN_TIME;
			if ( ratio > 0 ) {
				angles[PITCH] += ratio * cg.v_dmg_pitch;
				angles[ROLL] += ratio * cg.v_dmg_roll;
			}
		}
	}

	// add pitch based on fall kick
#if 0
	ratio = ( cg.time - cg.landTime) / FALL_TIME;
	if (ratio < 0)
		ratio = 0;
	angles[PITCH] += ratio * cg.fall_value;
#endif

	// add angles based on velocity
	VectorCopy( cg.predicted_player_state.velocity, predictedVelocity );

	delta = DotProduct ( predictedVelocity, cg.refdef.viewaxis[0]);
	angles[PITCH] += delta * cg_runpitch.value;
	
	delta = DotProduct ( predictedVelocity, cg.refdef.viewaxis[1]);
	angles[ROLL] -= delta * cg_runroll.value;

	// add angles based on bob

	// make sure the bob is visible even at low speeds
	speed = cg.xyspeed > 200 ? cg.xyspeed : 200;

	delta = cg.bobfracsin * cg_bobpitch.value * speed;
	if (cg.predicted_player_state.pm_flags & PMF_DUCKED)
		delta *= 3;		// crouching
	angles[PITCH] += delta;
	delta = cg.bobfracsin * cg_bobroll.value * speed;
	if (cg.predicted_player_state.pm_flags & PMF_DUCKED)
		delta *= 3;		// crouching accentuates roll
	if (cg.bobcycle & 1)
		delta = -delta;
	angles[ROLL] += delta;

//===================================

	// add view height
	origin[2] += cg.predicted_player_state.viewheight;

	// smooth out duck height changes
	timeDelta = cg.time - cg.duckTime;
	if ( timeDelta < DUCK_TIME) {
		cg.refdef.vieworg[2] -= cg.duckChange * (DUCK_TIME - timeDelta) / DUCK_TIME;
	}

	// add bob height
	bob = cg.bobfracsin * cg.xyspeed * cg_bobup.value;
	if (bob > 6) {
		bob = 6;
	}

	origin[2] += bob;


	// add fall height
	delta = cg.time - cg.landTime;
	if ( delta < LAND_DEFLECT_TIME ) {
		f = delta / LAND_DEFLECT_TIME;
		cg.refdef.vieworg[2] += cg.landChange * f;
	} else if ( delta < LAND_DEFLECT_TIME + LAND_RETURN_TIME ) {
		delta -= LAND_DEFLECT_TIME;
		f = 1.0 - ( delta / LAND_RETURN_TIME );
		cg.refdef.vieworg[2] += cg.landChange * f;
	}

	// add step offset
	CG_StepOffset();

	if(cg.snap->ps.leanofs != 0)
	{
		vec3_t	right;
		//add leaning offset
		//FIXME: when crouching, this bounces up and down?!
		cg.refdefViewAngles[2] += (float)cg.snap->ps.leanofs/2;
		AngleVectors(cg.refdefViewAngles, NULL, right, NULL);
		VectorMA(cg.refdef.vieworg, (float)cg.snap->ps.leanofs, right, cg.refdef.vieworg);
	}

	// pivot the eye based on a neck length
#if 0
	{
#define	NECK_LENGTH		8
	vec3_t			forward, up;
 
	cg.refdef.vieworg[2] -= NECK_LENGTH;
	AngleVectors( cg.refdefViewAngles, forward, NULL, up );
	VectorMA( cg.refdef.vieworg, 3, forward, cg.refdef.vieworg );
	VectorMA( cg.refdef.vieworg, NECK_LENGTH, up, cg.refdef.vieworg );
	}
#endif

	{
		centity_t	*playerCent = &cg_entities[0];

		if ( playerCent && playerCent->gent && playerCent->gent->client )
		{
			VectorCopy( cg.refdef.vieworg, playerCent->gent->client->renderInfo.eyePoint );
			VectorCopy( cg.refdefViewAngles, playerCent->gent->client->renderInfo.eyeAngles );
		}
	}
}

//======================================================================

void CG_ZoomDown_f( void )
 { 
	// Ignore zoom requests when yer paused
	if ( cg_paused.integer || in_camera )
	{
		return;
	}
	
	//Captain Proton has no zoom technology 
	if ( cg.weaponSelect == WP_PROTON_GUN )
	{
		cg.zoomLocked = qfalse;
		cg.zoomed = qfalse;
		return;
	}

	// The zoom hasn't been started yet, so do it now
	if ( !cg.zoomed )
	{
		cg.zoomLocked = qfalse;
		cg.zoomed = qtrue;
		cg_zoomFov = cg_fov.value;
		cg.zoomTime = cg.time;
		cgi_S_StartSound( cg.refdef.vieworg, ENTITYNUM_WORLD, CHAN_AUTO, cgs.media.zoomStart );
		return;
	}

	// Can only snap out of the zoom mode if it has already been locked (CG_ZoomUp_f has been called)
	if ( cg.zoomLocked )
	{
		// Snap out of zoom mode
		cg.zoomed = qfalse;
		cg.zoomTime = cg.time;
		cgi_S_StartSound( cg.refdef.vieworg, ENTITYNUM_WORLD, CHAN_AUTO, cgs.media.zoomEnd );
	}
}
 
void CG_ZoomUp_f( void )
 { 
	// Ignore zoom requests when yer paused
	if ( cg_paused.integer || in_camera )
	{
		return;
	}

	if ( cg.zoomed ) {
		// Freeze the zoom mode
		cg.zoomLocked = qtrue;
	}
}


/*
====================
CG_CalcFovFromX

Calcs Y FOV from given X FOV
====================
*/
#define	WAVE_AMPLITUDE	1
#define	WAVE_FREQUENCY	0.4

qboolean CG_CalcFOVFromX( float fov_x ) 
{
	float	x;
//	float	phase;
//	float	v;
//	int		contents;
	float	fov_y;
	qboolean	inwater;

	x = cg.refdef.width / tan( fov_x / 360 * M_PI );
	fov_y = atan2( cg.refdef.height, x );
	fov_y = fov_y * 360 / M_PI;

	// there's a problem with this, it only takes the leafbrushes into account, not the entity brushes,
	//	so if you give slime/water etc properties to a func_door area brush in order to move the whole water 
	//	level up/down this doesn't take into account the door position, so warps the view the whole time
	//	whether the water is up or not. Fortunately there's only one slime area in Trek that you can be under,
	//	so lose it...
#if 0
/*
	// warp if underwater
	contents = CG_PointContents( cg.refdef.vieworg, -1 );
	if ( contents & ( CONTENTS_WATER | CONTENTS_SLIME | CONTENTS_LAVA ) ){
		phase = cg.time / 1000.0 * WAVE_FREQUENCY * M_PI * 2;
		v = WAVE_AMPLITUDE * sin( phase );
		fov_x += v;
		fov_y -= v;
		inwater = qtrue;
	}
	else {
		inwater = qfalse;
	}
*/
#else
	inwater = qfalse;
#endif


	// set it
	cg.refdef.fov_x = fov_x;
	cg.refdef.fov_y = fov_y;

	return (inwater);
}
/*
====================
CG_CalcFov

Fixed fov at intermissions, otherwise account for fov variable and zooms.
====================
*/

static qboolean	CG_CalcFov( void ) {
	float	fov_x;
	float	f;

	if ( cg.predicted_player_state.pm_type == PM_INTERMISSION ) {
		// if in intermission, use a fixed value
		fov_x = 80;
	} else {
		// user selectable
		fov_x = cg_fov.value;
		if ( fov_x < 1 ) {
			fov_x = 1;
		} else if ( fov_x > 160 ) {
			fov_x = 160;
		}

		// Disable zooming when in third person
		if ( cg.zoomed && !cg.renderingThirdPerson )
		{
			if ( !cg.zoomLocked )
			{
				// Interpolate current zoom level
				cg_zoomFov = cg_fov.value - ((float)( cg.time - cg.zoomTime ) / ZOOM_IN_TIME + ZOOM_START_PERCENT) 
									* ( cg_fov.value - MAX_ZOOM_FOV );

				// Clamp zoomFov
				if ( cg_zoomFov < MAX_ZOOM_FOV )
					cg_zoomFov = MAX_ZOOM_FOV;
				else if ( cg_zoomFov > cg_fov.value )
					cg_zoomFov = cg_fov.value;
				else
				{//still zooming
					static zoomSoundTime = 0;

					if ( zoomSoundTime < cg.time )
					{
						cgi_S_StartSound( cg.refdef.vieworg, ENTITYNUM_WORLD, CHAN_LOCAL, cgs.media.zoomLoop );
						zoomSoundTime = cg.time + 300;
					}
				}
			}

			fov_x = cg_zoomFov;
		} else {
			f = ( cg.time - cg.zoomTime ) / ZOOM_OUT_TIME;
			if ( f > 1.0 ) {
				fov_x = fov_x;
			} else {
				fov_x = cg_zoomFov + f * ( fov_x - cg_zoomFov );
			}
		}
	}

	return ( CG_CalcFOVFromX( fov_x ) );
}



/*
===============
CG_DamageBlendBlob

===============
*/
static void CG_DamageBlendBlob( void ) 
{
	int			t;
	int			maxTime;
	refEntity_t		ent;

	if ( !cg.damageValue ) {
		return;
	}

	// ragePro systems can't fade blends, so don't obscure the screen
	if ( cgs.glconfig.hardwareType == GLHW_RAGEPRO ) {
		return;
	}

	maxTime = DAMAGE_TIME;
	t = cg.time - cg.damageTime;
	if ( t <= 0 || t >= maxTime ) {
		return;
	}

	memset( &ent, 0, sizeof( ent ) );
	ent.reType = RT_SPRITE;
	ent.renderfx = RF_FIRST_PERSON;

	VectorMA( cg.refdef.vieworg, 8, cg.refdef.viewaxis[0], ent.origin );
	VectorMA( ent.origin, cg.damageX * -8, cg.refdef.viewaxis[1], ent.origin );
	VectorMA( ent.origin, cg.damageY * 8, cg.refdef.viewaxis[2], ent.origin );

	ent.radius = cg.damageValue * 3 * ( 1.0 - ((float)t / maxTime) );
	ent.customShader = cgs.media.borgEyeFlareShader;
	ent.shaderRGBA[0] = 180 * ( 1.0 - ((float)t / maxTime) );
	ent.shaderRGBA[1] = 50 * ( 1.0 - ((float)t / maxTime) );
	ent.shaderRGBA[2] = 50 * ( 1.0 - ((float)t / maxTime) );
	ent.shaderRGBA[3] = 255;

	cgi_R_AddRefEntityToScene( &ent );
}


/*
===============
CG_CalcViewValues

Sets cg.refdef view values
===============
*/
static qboolean CG_CalcViewValues( void ) {
	playerState_t	*ps;

	memset( &cg.refdef, 0, sizeof( cg.refdef ) );

	// calculate size of 3D view
	CG_CalcVrect();

	ps = &cg.predicted_player_state;

	// intermission view
	if ( ps->pm_type == PM_INTERMISSION ) {
		VectorCopy( ps->origin, cg.refdef.vieworg );
		VectorCopy( ps->viewangles, cg.refdefViewAngles );
		AnglesToAxis( cg.refdefViewAngles, cg.refdef.viewaxis );
		return CG_CalcFov();
	}

	cg.bobcycle = ( ps->bobCycle & 128 ) >> 7;
	cg.bobfracsin = fabs( sin( ( ps->bobCycle & 127 ) / 127.0 * M_PI ) );
	cg.xyspeed = sqrt( ps->velocity[0] * ps->velocity[0] +
		ps->velocity[1] * ps->velocity[1] );


	VectorCopy( ps->origin, cg.refdef.vieworg );
	VectorCopy( ps->viewangles, cg.refdefViewAngles );

	// add error decay
	if ( cg_errorDecay.value > 0 ) {
		int		t;
		float	f;

		t = cg.time - cg.predictedErrorTime;
		f = ( cg_errorDecay.value - t ) / cg_errorDecay.value;
		if ( f > 0 && f < 1 ) {
			VectorMA( cg.refdef.vieworg, f, cg.predictedError, cg.refdef.vieworg );
		} else {
			cg.predictedErrorTime = 0;
		}
	}

	if ( cg.renderingThirdPerson ) {
		// back away from character
		if ( cg_thirdPerson.integer == CG_CAM_ABOVE)
		{			
			CG_OffsetThirdPersonOverheadView();
		}
		else
		{
			CG_OffsetThirdPersonView();
		}
	} else {
		// offset for local bobbing and kicks
		CG_OffsetFirstPersonView();
	}

	// shake the camera if necessary
	CGCam_UpdateShake( cg.refdef.vieworg, cg.refdefViewAngles );

	// Doing this when the camera is directly above will look bad
	if ( cg_thirdPerson.integer != CG_CAM_ABOVE )
	{
		// position eye reletive to origin
		AnglesToAxis( cg.refdefViewAngles, cg.refdef.viewaxis );
	}

	if ( cg.hyperspace ) {
		cg.refdef.rdflags |= RDF_NOWORLDMODEL | RDF_HYPERSPACE;
	}

	// field of view
	return CG_CalcFov();
}


/*
=====================
CG_PowerupTimerSounds
=====================
*/
static void CG_PowerupTimerSounds( void ) {
/*	int		i;
	int		t;

	// powerup timers going away
	for ( i = 0 ; i < MAX_POWERUPS ; i++ ) {
		t = cg.snap->ps.powerups[i];
		if ( t <= cg.time ) {
			continue;
		}
		if ( t - cg.time >= POWERUP_BLINKS * POWERUP_BLINK_TIME ) {
			continue;
		}
		if ( ( t - cg.time ) / POWERUP_BLINK_TIME != ( t - cg.oldTime ) / POWERUP_BLINK_TIME ) {
			cgi_S_StartSound( NULL, cg.snap->ps.clientNum, CHAN_ITEM, cgs.media.wearOffSound );
		}
	}
*/
}

//=========================================================================

/*
=================
CG_DrawActiveFrame

Generates and draws a game scene and status information at the given time.
=================
*/
extern void CG_BuildSolidList( void );
void CG_DrawActiveFrame( int serverTime, stereoFrame_t stereoView ) {
	qboolean	inwater = qfalse;

	cg.time = serverTime;

	CG_BuildSolidList();
	// update cvars
	CG_UpdateCvars();

	// if we are only updating the screen as a loading
	// pacifier, don't even try to read snapshots
	if ( cg.infoScreenText[0] != 0 ) {
		CG_DrawInformation();
		return;
	}

	// any looped sounds will be respecified as entities
	// are added to the render list
	cgi_S_ClearLoopingSounds();

	// clear all the render lists
	cgi_R_ClearScene();

	// set up cg.snap and possibly cg.nextSnap
	CG_ProcessSnapshots();

	// if we haven't received any snapshots yet, all
	// we can draw is the information screen
	if ( !cg.snap ) {
		CG_DrawInformation();
		return;
	}

	// let the client system know what our weapon and zoom settings are
	cgi_SetUserCmdValue( cg.weaponSelect, cg.refdef.fov_y / 75.0 );

	// this counter will be bumped for every valid scene we generate
	cg.clientFrame++;

	// update cg.predicted_player_state
	CG_PredictPlayerState();

	// decide on third person view
	cg.renderingThirdPerson = cg_thirdPerson.integer || (cg.snap->ps.stats[STAT_HEALTH] <= 0);

	if ( in_camera )
	{
		// The camera takes over the view
		CGCam_RenderScene();		
	}
	else
	{		
		//Finish any fading that was happening
		CGCam_UpdateFade();
		// build cg.refdef
		inwater = CG_CalcViewValues();
	}

	//This is done from the vieworg to get origin for non-attenuated sounds
	cgi_S_UpdateAmbientSet( CG_ConfigString( CS_AMBIENT_SET ), cg.refdef.vieworg );

	// first person blend blobs, done after AnglesToAxis
	if ( !cg.renderingThirdPerson ) {
		CG_DamageBlendBlob();
	}

	// build the render lists
	if ( !cg.hyperspace ) {
		CG_AddPacketEntities();			// adter calcViewValues, so predicted player state is correct
		CG_AddMarks();
		CG_AddLocalEntities();
	}

	// Don't draw the in-view weapon when in camera mode
	if ( !in_camera && !cg_pano.integer )
		CG_AddViewWeapon( &cg.predicted_player_state );

	// finish up the rest of the refdef
	if ( cg.testModelEntity.hModel ) {
		CG_AddTestModel();
	}
	
	cg.refdef.time = cg.time;
	memcpy( cg.refdef.areamask, cg.snap->areamask, sizeof( cg.refdef.areamask ) );

	// update audio positions
	cgi_S_Respatialize( cg.snap->ps.clientNum, cg.refdef.vieworg, cg.refdef.viewaxis, inwater );

	// warning sounds when powerup is wearing off
	CG_PowerupTimerSounds();

	// make sure the lagometerSample and frame timing isn't done twice when in stereo
	if ( stereoView != STEREO_RIGHT ) {
		cg.frametime = cg.time - cg.oldTime;
		cg.oldTime = cg.time;
	}

	//Add all effects
	if (cg.frametime >= 0) {
		FX_Add();
	}

	if ( cg_pano.integer ) {	// let's grab a panorama!
		cg.levelShot = qtrue;  //hide the 2d
		VectorClear(cg.refdefViewAngles);		
		cg.refdefViewAngles[YAW] = -360 * cg_pano.integer/cg_panoNumShots.integer;	//choose angle
		AnglesToAxis( cg.refdefViewAngles, cg.refdef.viewaxis );
		CG_DrawActive( stereoView );
		cg.levelShot = qfalse;
	} 	else {
		// actually issue the rendering calls
		CG_DrawActive( stereoView );
	}
}