yichael_smartbow/Assets/BowArrow/Scripts/Game/TargetBody.cs

using UnityEngine;

public class TargetBody : MonoBehaviour
{
    void OnCollisionEnter(Collision collision) {
        Arrow arrow = collision.transform.GetComponent<Arrow>();
        if (arrow != null)
        {
            arrow.transform.Find("Head").position = collision.contacts[0].point;
            arrow.Hit();
            AudioMgr.ins.PlayHit(AudioMgr.GetAudioSource(this.gameObject));
            bool hitTarget = false;
            if (arrow.armBow.validTargets.Contains(this)) {
                float maxSize = Vector3.Distance(this.transform.Find("CenterPoint").position, this.transform.Find("SidePoint").position);
                float radius = this.measureRadius(collision.contacts[0].point);
                int score = 10 - Mathf.FloorToInt(radius / maxSize * 5);
                if (score > 5) {
                    GameMgr.ins.hitTarget(score);
                    AudioMgr.ins.PlayCheer(true);
                    hitTarget = true;
                }
            }
            if (!hitTarget) {
                GameMgr.ins.hitTarget(0);
                AudioMgr.ins.PlayCheer(false);
            }
        }
    }

    float measureRadius(Vector3 position) {
        return Vector3.Distance(this.transform.Find("CenterPoint").position, position);
    }
}