/* Side-scroller camera by Seth Kingsley - sethk@magnesium.net */

#include    "quakedef.h"

cvar_t		sk_sidecam = {"sk_sidecam", "0", true};
static cvar_t	_sk_sidecam_dist = {"sk_sidecam_dist", "100", true},
		_sk_sidecam_noclip = {"sk_sidecam_noclip", "0", true},
		_sk_sidecam_side = {"sk_sidecam_side", "1", true},
		_sk_sidecam_pitch = {"sk_sidecam_pitch", "0", true};

extern void
side_init(void)
{
    Cvar_RegisterVariable(&sk_sidecam);
    Cvar_RegisterVariable(&_sk_sidecam_noclip);
    Cvar_RegisterVariable(&_sk_sidecam_dist);
    Cvar_RegisterVariable(&_sk_sidecam_side);
    Cvar_RegisterVariable(&_sk_sidecam_pitch);
}

extern void
side_update(void)
{
    vec3_t	    fav3, rav3, uav3,
		    dv3;
    register int    i;
    trace_t	    t;

    if (_sk_sidecam_side.value != 1 && _sk_sidecam_side.value != -1)
	_sk_sidecam_side.value = 1;
    AngleVectors(cl.viewangles, fav3, rav3, uav3);
    for (i = 0; i < 3; ++i)
	dv3[i] = r_refdef.vieworg[i] -
	    fav3[i] +
	    (_sk_sidecam_side.value *
		(rav3[i] * _sk_sidecam_dist.value));
    if (!_sk_sidecam_noclip.value &&
	    !SV_RecursiveHullCheck(cl.worldmodel->hulls,
		0, 0, 1,
		r_refdef.vieworg, dv3,
		&t))
	VectorCopy(t.endpos, r_refdef.vieworg)
    else
	VectorCopy(dv3, r_refdef.vieworg)
    r_refdef.viewangles[YAW]+= _sk_sidecam_side.value * 90;
    if (_sk_sidecam_pitch.value)
	r_refdef.viewangles[ROLL] = _sk_sidecam_side.value *
	    r_refdef.viewangles[PITCH];
    r_refdef.viewangles[PITCH] = 0;
}