Function intersect

source/src/weapon.cpp:311–334

int intersect(playerent *d, const vec &from, const vec &to, vec *end)
{
    float dist;
    if(d->head.x >= 0)
    {
        if(intersectsphere(from, to, d->head, HEADSIZE, dist))
        {
            if(end) (*end = to).sub(from).mul(dist).add(from);
            return 2;
        }
    }
    float y = d->yaw*RAD, p = (d->pitch/4+90)*RAD, c = cosf(p);
    vec bottom(d->o), top(sinf(y)*c, -cosf(y)*c, sinf(p))/*, mid(top)*/;
    bottom.z -= d->eyeheight;
    float h = d->eyeheight /*+ d->aboveeye*/; // this mod makes the shots pass over the shoulders
//     mid.mul(h*0.5).add(bottom);            // this mod divides the hitbox in 2
    top.mul(h).add(bottom);
    if( intersectcylinder(from, to, bottom, top, d->radius, dist) ) // FIXME if using 2 hitboxes
    {
        if(end) (*end = to).sub(from).mul(dist).add(from);
        return 1;
    }
    return 0;
}

bool intersect(entity *e, const vec &from, const vec &to, vec *end)
{