view.c

quake1 dos源代码最新版本

		ib = i*a + b;
		if (ir > 255)
			ir = 255;
		if (ig > 255)
			ig = 255;
		if (ib > 255)
			ib = 255;

		ramps[0][i] = gammatable[ir];
		ramps[1][i] = gammatable[ig];
		ramps[2][i] = gammatable[ib];
	}

	basepal = host_basepal;
	newpal = pal;

	for (i=0 ; i<256 ; i++)
	{
		ir = basepal[0];
		ig = basepal[1];
		ib = basepal[2];
		basepal += 3;

		newpal[0] = ramps[0][ir];
		newpal[1] = ramps[1][ig];
		newpal[2] = ramps[2][ib];
		newpal += 3;
	}

	VID_ShiftPalette (pal);
}
#else	// !GLQUAKE
void V_UpdatePalette (void)
{
	int		i, j;
	qboolean	new;
	byte	*basepal, *newpal;
	byte	pal[768];
	int		r,g,b;
	qboolean force;

	V_CalcPowerupCshift ();

	new = false;

	for (i=0 ; i<NUM_CSHIFTS ; i++)
	{
		if (cl.cshifts[i].percent != cl.prev_cshifts[i].percent)
		{
			new = true;
			cl.prev_cshifts[i].percent = cl.cshifts[i].percent;
		}
		for (j=0 ; j<3 ; j++)
			if (cl.cshifts[i].destcolor[j] != cl.prev_cshifts[i].destcolor[j])
			{
				new = true;
				cl.prev_cshifts[i].destcolor[j] = cl.cshifts[i].destcolor[j];
			}
	}

// drop the damage value
	cl.cshifts[CSHIFT_DAMAGE].percent -= host_frametime*150;
	if (cl.cshifts[CSHIFT_DAMAGE].percent <= 0)
		cl.cshifts[CSHIFT_DAMAGE].percent = 0;

// drop the bonus value
	cl.cshifts[CSHIFT_BONUS].percent -= host_frametime*100;
	if (cl.cshifts[CSHIFT_BONUS].percent <= 0)
		cl.cshifts[CSHIFT_BONUS].percent = 0;

	force = V_CheckGamma ();
	if (!new && !force)
		return;

	basepal = host_basepal;
	newpal = pal;

	for (i=0 ; i<256 ; i++)
	{
		r = basepal[0];
		g = basepal[1];
		b = basepal[2];
		basepal += 3;

		for (j=0 ; j<NUM_CSHIFTS ; j++)
		{
			r += (cl.cshifts[j].percent*(cl.cshifts[j].destcolor[0]-r))>>8;
			g += (cl.cshifts[j].percent*(cl.cshifts[j].destcolor[1]-g))>>8;
			b += (cl.cshifts[j].percent*(cl.cshifts[j].destcolor[2]-b))>>8;
		}

		newpal[0] = gammatable[r];
		newpal[1] = gammatable[g];
		newpal[2] = gammatable[b];
		newpal += 3;
	}

	VID_ShiftPalette (pal);
}
#endif	// !GLQUAKE


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

						VIEW RENDERING

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

float angledelta (float a)
{
	a = anglemod(a);
	if (a > 180)
		a -= 360;
	return a;
}

/*
==================
CalcGunAngle
==================
*/
void CalcGunAngle (void)
{
	float	yaw, pitch, move;
	static float oldyaw = 0;
	static float oldpitch = 0;

	yaw = r_refdef.viewangles[YAW];
	pitch = -r_refdef.viewangles[PITCH];

	yaw = angledelta(yaw - r_refdef.viewangles[YAW]) * 0.4;
	if (yaw > 10)
		yaw = 10;
	if (yaw < -10)
		yaw = -10;
	pitch = angledelta(-pitch - r_refdef.viewangles[PITCH]) * 0.4;
	if (pitch > 10)
		pitch = 10;
	if (pitch < -10)
		pitch = -10;
	move = host_frametime*20;
	if (yaw > oldyaw)
	{
		if (oldyaw + move < yaw)
			yaw = oldyaw + move;
	}
	else
	{
		if (oldyaw - move > yaw)
			yaw = oldyaw - move;
	}

	if (pitch > oldpitch)
	{
		if (oldpitch + move < pitch)
			pitch = oldpitch + move;
	}
	else
	{
		if (oldpitch - move > pitch)
			pitch = oldpitch - move;
	}

	oldyaw = yaw;
	oldpitch = pitch;

	cl.viewent.angles[YAW] = r_refdef.viewangles[YAW] + yaw;
	cl.viewent.angles[PITCH] = - (r_refdef.viewangles[PITCH] + pitch);

	cl.viewent.angles[ROLL] -= v_idlescale->value * sin(cl.time*v_iroll_cycle->value) * v_iroll_level->value;
	cl.viewent.angles[PITCH] -= v_idlescale->value * sin(cl.time*v_ipitch_cycle->value) * v_ipitch_level->value;
	cl.viewent.angles[YAW] -= v_idlescale->value * sin(cl.time*v_iyaw_cycle->value) * v_iyaw_level->value;
}

/*
==============
V_BoundOffsets
==============
*/
void V_BoundOffsets (void)
{
	entity_t	*ent;

	ent = &cl_entities[cl.viewentity];

// absolutely bound refresh reletive to entity clipping hull
// so the view can never be inside a solid wall

	if (r_refdef.vieworg[0] < ent->origin[0] - 14)
		r_refdef.vieworg[0] = ent->origin[0] - 14;
	else if (r_refdef.vieworg[0] > ent->origin[0] + 14)
		r_refdef.vieworg[0] = ent->origin[0] + 14;
	if (r_refdef.vieworg[1] < ent->origin[1] - 14)
		r_refdef.vieworg[1] = ent->origin[1] - 14;
	else if (r_refdef.vieworg[1] > ent->origin[1] + 14)
		r_refdef.vieworg[1] = ent->origin[1] + 14;
	if (r_refdef.vieworg[2] < ent->origin[2] - 22)
		r_refdef.vieworg[2] = ent->origin[2] - 22;
	else if (r_refdef.vieworg[2] > ent->origin[2] + 30)
		r_refdef.vieworg[2] = ent->origin[2] + 30;
}

/*
==============
V_AddIdle

Idle swaying
==============
*/
void V_AddIdle (void)
{
	r_refdef.viewangles[ROLL] += v_idlescale->value * sin(cl.time*v_iroll_cycle->value) * v_iroll_level->value;
	r_refdef.viewangles[PITCH] += v_idlescale->value * sin(cl.time*v_ipitch_cycle->value) * v_ipitch_level->value;
	r_refdef.viewangles[YAW] += v_idlescale->value * sin(cl.time*v_iyaw_cycle->value) * v_iyaw_level->value;
}


/*
==============
V_CalcViewRoll

Roll is induced by movement and damage
==============
*/
void V_CalcViewRoll (void)
{
	float	side;

	side = V_CalcRoll (cl_entities[cl.viewentity].angles, cl.velocity);
	r_refdef.viewangles[ROLL] += side;

	if (v_dmg_time > 0)
	{
		r_refdef.viewangles[ROLL] += v_dmg_time/v_kicktime->value*v_dmg_roll;
		r_refdef.viewangles[PITCH] += v_dmg_time/v_kicktime->value*v_dmg_pitch;
		v_dmg_time -= host_frametime;
	}

	if (cl.stats[STAT_HEALTH] <= 0)
	{
		r_refdef.viewangles[ROLL] = 80;	// dead view angle
		return;
	}

}


/*
==================
V_CalcIntermissionRefdef

==================
*/
void V_CalcIntermissionRefdef (void)
{
	entity_t	*ent, *view;
	float		old;

// ent is the player model (visible when out of body)
	ent = &cl_entities[cl.viewentity];
// view is the weapon model (only visible from inside body)
	view = &cl.viewent;

	VectorCopy (ent->origin, r_refdef.vieworg);
	VectorCopy (ent->angles, r_refdef.viewangles);
	view->model = NULL;

// always idle in intermission
	old = v_idlescale->value;
	v_idlescale->value = 1;
	V_AddIdle ();
	v_idlescale->value = old;
}

/*
==================
V_CalcRefdef

==================
*/
void V_CalcRefdef (void)
{
	entity_t	*ent, *view;
	int			i;
	vec3_t		forward, right, up;
	vec3_t		angles;
	float		bob;
	static float oldz = 0;

	V_DriftPitch ();

// ent is the player model (visible when out of body)
	ent = &cl_entities[cl.viewentity];
// view is the weapon model (only visible from inside body)
	view = &cl.viewent;


// transform the view offset by the model's matrix to get the offset from
// model origin for the view
	ent->angles[YAW] = cl.viewangles[YAW];	// the model should face
										// the view dir
	ent->angles[PITCH] = -cl.viewangles[PITCH];	// the model should face
										// the view dir


	bob = V_CalcBob ();

// refresh position
	VectorCopy (ent->origin, r_refdef.vieworg);
	r_refdef.vieworg[2] += cl.viewheight + bob;

// never let it sit exactly on a node line, because a water plane can
// dissapear when viewed with the eye exactly on it.
// the server protocol only specifies to 1/16 pixel, so add 1/32 in each axis
	r_refdef.vieworg[0] += 1.0/32;
	r_refdef.vieworg[1] += 1.0/32;
	r_refdef.vieworg[2] += 1.0/32;

	VectorCopy (cl.viewangles, r_refdef.viewangles);
	V_CalcViewRoll ();
	V_AddIdle ();

// offsets
	angles[PITCH] = -ent->angles[PITCH];	// because entity pitches are
											//  actually backward
	angles[YAW] = ent->angles[YAW];
	angles[ROLL] = ent->angles[ROLL];

	AngleVectors (angles, forward, right, up);

	for (i=0 ; i<3 ; i++)
		r_refdef.vieworg[i] += scr_ofsx->value*forward[i]
			+ scr_ofsy->value*right[i]
			+ scr_ofsz->value*up[i];


	V_BoundOffsets ();

// set up gun position
	VectorCopy (cl.viewangles, view->angles);

	CalcGunAngle ();

	VectorCopy (ent->origin, view->origin);
	view->origin[2] += cl.viewheight;

	for (i=0 ; i<3 ; i++)
	{
		view->origin[i] += forward[i]*bob*0.4;
//		view->origin[i] += right[i]*bob*0.4;
//		view->origin[i] += up[i]*bob*0.8;
	}
	view->origin[2] += bob;

// fudge position around to keep amount of weapon visible
// roughly equal with different FOV

#if 0
	if (cl.model_precache[cl.stats[STAT_WEAPON]] && strcmp (cl.model_precache[cl.stats[STAT_WEAPON]]->name,  "progs/v_shot2.mdl"))
#endif
	if (scr_viewsize->value == 110)
		view->origin[2] += 1;
	else if (scr_viewsize->value == 100)
		view->origin[2] += 2;
	else if (scr_viewsize->value == 90)
		view->origin[2] += 1;
	else if (scr_viewsize->value == 80)
		view->origin[2] += 0.5;

	view->model = cl.model_precache[cl.stats[STAT_WEAPON]];
	view->frame = cl.stats[STAT_WEAPONFRAME];
	view->colormap = vid.colormap;

// set up the refresh position
	VectorAdd (r_refdef.viewangles, cl.punchangle, r_refdef.viewangles);

// smooth out stair step ups
if (cl.onground && ent->origin[2] - oldz > 0)
{
	float steptime;

	steptime = cl.time - cl.oldtime;
	if (steptime < 0)
//FIXME		I_Error ("steptime < 0");
		steptime = 0;

	oldz += steptime * 80;
	if (oldz > ent->origin[2])
		oldz = ent->origin[2];
	if (ent->origin[2] - oldz > 12)
		oldz = ent->origin[2] - 12;
	r_refdef.vieworg[2] += oldz - ent->origin[2];
	view->origin[2] += oldz - ent->origin[2];
}
else
	oldz = ent->origin[2];

	if (chase_active->value)
		Chase_Update ();
}

/*
==================
V_RenderView

The player's clipping box goes from (-16 -16 -24) to (16 16 32) from
the entity origin, so any view position inside that will be valid
==================
*/
extern vrect_t	scr_vrect;

void V_RenderView (void)
{
	if (con_forcedup)
		return;

// don't allow cheats in multiplayer
	if (cl.maxclients > 1)
	{
		Cvar_Set (scr_ofsx, "0");
		Cvar_Set (scr_ofsy, "0");
		Cvar_Set (scr_ofsz, "0");
	}

	if (cl.intermission)
	{	// intermission / finale rendering
		V_CalcIntermissionRefdef ();
	}
	else
	{
		if (!cl.paused /* && (sv.maxclients > 1 || key_dest == key_game) */ )
			V_CalcRefdef ();
	}

	R_PushDlights ();

	if (lcd_x->value)
	{
		//
		// render two interleaved views
		//
		int		i;

		vid.rowbytes <<= 1;
		vid.aspect *= 0.5;

		r_refdef.viewangles[YAW] -= lcd_yaw->value;
		for (i=0 ; i<3 ; i++)
			r_refdef.vieworg[i] -= right[i]*lcd_x->value;
		R_RenderView ();

		vid.buffer += vid.rowbytes>>1;

		R_PushDlights ();

		r_refdef.viewangles[YAW] += lcd_yaw->value*2;
		for (i=0 ; i<3 ; i++)
			r_refdef.vieworg[i] += 2*right[i]*lcd_x->value;
		R_RenderView ();

		vid.buffer -= vid.rowbytes>>1;

		r_refdef.vrect.height <<= 1;

		vid.rowbytes >>= 1;
		vid.aspect *= 2;
	}
	else
	{
		R_RenderView ();
	}

#ifndef GLQUAKE
	if (crosshair->value)
		Draw_Character (scr_vrect.x + scr_vrect.width/2 + cl_crossx->value,
			scr_vrect.y + scr_vrect.height/2 + cl_crossy->value, '+');
#endif

}

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

// 2001-09-18 New cvar system by Maddes (Init)  start
/*
=============
V_Init_Cvars
=============
*/
void V_Init_Cvars (void)
{
	lcd_x = Cvar_Get ("lcd_x", "0", CVAR_ORIGINAL);
	lcd_yaw = Cvar_Get ("lcd_yaw", "0", CVAR_ORIGINAL);

	v_centermove = Cvar_Get ("v_centermove", "0.15", CVAR_ORIGINAL);
	v_centerspeed = Cvar_Get ("v_centerspeed", "500", CVAR_ORIGINAL);

	v_iyaw_cycle = Cvar_Get ("v_iyaw_cycle", "2", CVAR_ORIGINAL);
	v_iroll_cycle = Cvar_Get ("v_iroll_cycle", "0.5", CVAR_ORIGINAL);
	v_ipitch_cycle = Cvar_Get ("v_ipitch_cycle", "1", CVAR_ORIGINAL);
	v_iyaw_level = Cvar_Get ("v_iyaw_level", "0.3", CVAR_ORIGINAL);
	v_iroll_level = Cvar_Get ("v_iroll_level", "0.1", CVAR_ORIGINAL);
	v_ipitch_level = Cvar_Get ("v_ipitch_level", "0.3", CVAR_ORIGINAL);

	v_idlescale = Cvar_Get ("v_idlescale", "0", CVAR_ORIGINAL);
	crosshair = Cvar_Get ("crosshair", "0", CVAR_ARCHIVE|CVAR_ORIGINAL);
	cl_crossx = Cvar_Get ("cl_crossx", "0", CVAR_ORIGINAL);
	cl_crossy = Cvar_Get ("cl_crossy", "0", CVAR_ORIGINAL);
	gl_cshiftpercent = Cvar_Get ("gl_cshiftpercent", "100", CVAR_ORIGINAL);

	scr_ofsx = Cvar_Get ("scr_ofsx", "0", CVAR_ORIGINAL);
	scr_ofsy = Cvar_Get ("scr_ofsy", "0", CVAR_ORIGINAL);
	scr_ofsz = Cvar_Get ("scr_ofsz", "0", CVAR_ORIGINAL);
	cl_rollspeed = Cvar_Get ("cl_rollspeed", "200", CVAR_ORIGINAL);
	cl_rollangle = Cvar_Get ("cl_rollangle", "2.0", CVAR_ORIGINAL);
	cl_bob = Cvar_Get ("cl_bob", "0.02", CVAR_ORIGINAL);
	cl_bobcycle = Cvar_Get ("cl_bobcycle", "0.6", CVAR_ORIGINAL);
	cl_bobup = Cvar_Get ("cl_bobup", "0.5", CVAR_ORIGINAL);

	v_kicktime = Cvar_Get ("v_kicktime", "0.5", CVAR_ORIGINAL);
	v_kickroll = Cvar_Get ("v_kickroll", "0.6", CVAR_ORIGINAL);
	v_kickpitch = Cvar_Get ("v_kickpitch", "0.6", CVAR_ORIGINAL);

	BuildGammaTable (1.0);	// no gamma yet
	v_gamma = Cvar_Get ("gamma", "1", CVAR_ARCHIVE|CVAR_ORIGINAL);
}
// 2001-09-18 New cvar system by Maddes (Init)  end

/*
=============
V_Init
=============
*/
void V_Init (void)
{
	Cmd_AddCommand ("v_cshift", V_cshift_f);
	Cmd_AddCommand ("bf", V_BonusFlash_f);
	Cmd_AddCommand ("centerview", V_StartPitchDrift);

// 2001-09-18 New cvar system by Maddes (Init)  start
/*
	lcd_x = Cvar_Get ("lcd_x", "0", CVAR_ORIGINAL);
	lcd_yaw = Cvar_Get ("lcd_yaw", "0", CVAR_ORIGINAL);

	v_centermove = Cvar_Get ("v_centermove", "0.15", CVAR_ORIGINAL);
	v_centerspeed = Cvar_Get ("v_centerspeed", "500", CVAR_ORIGINAL);

	v_iyaw_cycle = Cvar_Get ("v_iyaw_cycle", "2", CVAR_ORIGINAL);
	v_iroll_cycle = Cvar_Get ("v_iroll_cycle", "0.5", CVAR_ORIGINAL);
	v_ipitch_cycle = Cvar_Get ("v_ipitch_cycle", "1", CVAR_ORIGINAL);
	v_iyaw_level = Cvar_Get ("v_iyaw_level", "0.3", CVAR_ORIGINAL);
	v_iroll_level = Cvar_Get ("v_iroll_level", "0.1", CVAR_ORIGINAL);
	v_ipitch_level = Cvar_Get ("v_ipitch_level", "0.3", CVAR_ORIGINAL);

	v_idlescale = Cvar_Get ("v_idlescale", "0", CVAR_ORIGINAL);
	crosshair = Cvar_Get ("crosshair", "0", CVAR_ARCHIVE|CVAR_ORIGINAL);
	cl_crossx = Cvar_Get ("cl_crossx", "0", CVAR_ORIGINAL);
	cl_crossy = Cvar_Get ("cl_crossy", "0", CVAR_ORIGINAL);
	gl_cshiftpercent = Cvar_Get ("gl_cshiftpercent", "100", CVAR_ORIGINAL);

	scr_ofsx = Cvar_Get ("scr_ofsx", "0", CVAR_ORIGINAL);
	scr_ofsy = Cvar_Get ("scr_ofsy", "0", CVAR_ORIGINAL);
	scr_ofsz = Cvar_Get ("scr_ofsz", "0", CVAR_ORIGINAL);
	cl_rollspeed = Cvar_Get ("cl_rollspeed", "200", CVAR_ORIGINAL);
	cl_rollangle = Cvar_Get ("cl_rollangle", "2.0", CVAR_ORIGINAL);
	cl_bob = Cvar_Get ("cl_bob", "0.02", CVAR_ORIGINAL);
	cl_bobcycle = Cvar_Get ("cl_bobcycle", "0.6", CVAR_ORIGINAL);
	cl_bobup = Cvar_Get ("cl_bobup", "0.5", CVAR_ORIGINAL);

	v_kicktime = Cvar_Get ("v_kicktime", "0.5", CVAR_ORIGINAL);
	v_kickroll = Cvar_Get ("v_kickroll", "0.6", CVAR_ORIGINAL);
	v_kickpitch = Cvar_Get ("v_kickpitch", "0.6", CVAR_ORIGINAL);

	BuildGammaTable (1.0);	// no gamma yet
	v_gamma = Cvar_Get ("gamma", "1", CVAR_ARCHIVE|CVAR_ORIGINAL);
*/
// 2001-09-18 New cvar system by Maddes (Init)  start
}