/*
PF_walkmove

float(float yaw, float dist) walkmove
*/
void
PF_walkmove(void)
{
        edict_t *ent;
        float yaw, dist;
        vec3_t move;
        dfunction_t *oldf;
        int oldself;

        ent = PROG_TO_EDICT(pr_global_struct->self);
        yaw = G_FLOAT(OFS_PARM0);
        dist = G_FLOAT(OFS_PARM1);

        if(!((int)ent->v.flags & (FL_ONGROUND | FL_FLY | FL_SWIM))) {
                G_FLOAT(OFS_RETURN) = 0;
                return;
        }

        yaw = yaw * M_PI * 2 / 360;

        move[0] = cos(yaw) * dist;
        move[1] = sin(yaw) * dist;
        move[2] = 0;

// save program state, because SV_movestep may call other progs
        oldf = pr_xfunction;
        oldself = pr_global_struct->self;

        G_FLOAT(OFS_RETURN) = SV_movestep(ent, move, true);


// restore program state
        pr_xfunction = oldf;
        pr_global_struct->self = oldself;
}