Гаубица (Rigidbody.velocity по окружности)

using UnityEngine;
using System.Collections;
 
public class Point : MonoBehaviour {
 
    private Transform point;
 
    public Rigidbody force;
    public GameObject effect;
    public Transform to;
 
    void Start () {
        force.transform.position = transform.position;
    }
 
    void Update () {
        Vector3 dir = (to.transform.position - force.transform.position + transform.up);
        force.AddForce (dir);
    }
}

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
 
public class Tower : MonoBehaviour {
 
    public Transform spawn;
    public Rigidbody bullet;
    public float delay = 0.5f;
 
    private List<GameObject> target;
    private GameObject unit;
    private bool can_shoot = true;
    private float shoot_timer = 0.0f;
    private float distance;
 
    void Attack() {
        target = new List<GameObject> ();
        target.AddRange(GameObject.FindGameObjectsWithTag("Unit"));
        foreach (GameObject t in target) {
            float distance = Vector3.Distance (transform.position, t.transform.position);
            if (distance < 25) {
                Vector3 dir = t.transform.position - transform.position;
                transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.LookRotation(dir), Time.deltaTime * 15.0f);
            }
        }
        Ray ray = new Ray (spawn.position, transform.forward);
        RaycastHit hit;
        if (Physics.Raycast (ray, out hit)) {
            if (hit.collider.tag == "Unit") {
                hit.collider.gameObject.GetComponent<Unit> ().health -= 1.0f;
            }
        }
        Rigidbody go = (Rigidbody)Instantiate (bullet, spawn.position, Quaternion.identity);
        go.velocity = transform.forward * 16.0f;
        can_shoot = false;
    }
 
    void Update () {
        if (!can_shoot) {
            shoot_timer += Time.deltaTime;
            if (shoot_timer >= delay) {
                shoot_timer = 0.0f;
                can_shoot = true;
            }
        }
        if (can_shoot) {
            Attack ();
        }
    }
}

bool nav = true;
    if (nav == true) {
        for (int i = 0; i < target.Count; i++) {
            float distance = Vector3.Distance (transform.position, target [i].transform.position);
            if (distance < 25 && nav == true) {
                current = target [i];
                nav = false;
            }
        }
    }
    Vector3 dir = current.transform.position - transform.position;
    transform.rotation = Quaternion.Lerp (transform.rotation, Quaternion.LookRotation (dir), Time.deltaTime * 15.0f);