furfury/Furcherro/Assets/Scripts/GameStick.cs

using UnityEngine;

public class GameStick : MonoBehaviour
{
    GameObject m_arrowObj = null;
    GameObject m_dotObj = null;
    float m_arrowSize = 289f - 118f - 59f;
    Vector3 m_dotDefaultPos = new Vector3();

    //-----------------------------------------------------------------------------------------
    void Start ()
    {
        Init();
	}

    //-----------------------------------------------------------------------------------------
    void Init()
    {
        m_arrowObj = transform.Find("arrow").gameObject;
        m_dotObj = m_arrowObj.transform.Find("arrow").gameObject;
        m_dotDefaultPos = m_dotObj.transform.localPosition;
    }

    //-----------------------------------------------------------------------------------------
    public void SetDefault(bool isDefault)
    {
        //Vector3 scale = m_arrowObj.transform.localScale;
        if (isDefault)
        {
            SetArrowAngle(0);
            m_dotObj.transform.localPosition = m_dotDefaultPos;
        }

        //m_arrowObj.transform.localScale = scale;
    }

    //-----------------------------------------------------------------------------------------
    public float GetArrowYScale()
    {
        Vector3 arrowScale = m_arrowObj.transform.localScale;
        return arrowScale.y;
    }

    //-----------------------------------------------------------------------------------------
    public void SetArrowScale(float delta)
    {
        float neededYScale = delta / m_arrowSize;
        if (neededYScale > 1f)
            neededYScale = 1f;

        float dotShift = m_arrowSize * neededYScale;

        Vector3 dotPos = m_dotObj.transform.localPosition;
        dotPos.y = dotShift;
        m_dotObj.transform.localPosition = dotPos;
        //Vector3 arrowScale = m_arrowObj.transform.localScale;
        //arrowScale.y = neededYScale;
        //m_arrowObj.transform.localScale = arrowScale;
    }

    //-----------------------------------------------------------------------------------------
    public void UpdateArrow(Vector3 dir)
    {
        float angle = Vector3.Angle(dir, new Vector3(0, 1, 0));
        if (dir.x > 0)
            angle = -angle;

        SetArrowAngle(angle);
    }

    //-----------------------------------------------------------------------------------------
    void SetArrowAngle(float angle)
    {
        Vector3 arrowAngle = m_arrowObj.transform.eulerAngles;
        arrowAngle.z = angle;
        m_arrowObj.transform.eulerAngles = arrowAngle;
    }
}