using UnityEngine;

using System.Collections;

public class Zoom2D : Move
{
    #region 变量

    public float Delta;
    public float Timer;
    public float Origin;
    public float Duration;
    public float Destination;
    public Vector3 OriginVec;
    public Camera Camera;
    public Transform Target;
    public CurveFunctionF Func;

    #endregion

    public Zoom2D(Camera camera)
    {
        Camera = camera;
    }

    public override bool Do()
    {
        Timer += Time.fixedDeltaTime;

        if (Timer > Duration)
        {
            Timer = 0;

            Camera.orthographicSize = Destination;

            ManaAnim.MoveList.Remove(this);

            return true;
        }
        else
        {
            Camera.orthographicSize = Func(Timer, Duration, Origin, Delta);

            return false;
        }
    }

    public void StartZoom(float origin, float destination, float duration, float stay, Transform target, Curve curve)
    {
        OnForwardStart.SafeInvoke();

        Origin = origin;
        Target = target;
        Duration = duration;
        Destination = destination;

        Func = ManaAnim.CurveFuncDicF[curve];
        Delta = destination - origin;
        OriginVec = Camera.transform.position;

        ManaAnim.MoveList.Remove(this);
        ManaAnim.MoveList.Add(this);

        Move move = Camera.Move2D(Target.position, duration, false, curve);

        move.AddEventOnetime
        (
            EventType.ForwardFinish, 
            () =>
            {
                Auxiliary.Instance.DelayCall
                (
                    () =>
                    {
                        Delta = origin - destination;
                        Origin = destination;
                        Destination = origin;

                        ManaAnim.MoveList.Add(this);

                        Move tempMove = Camera.Move2D(OriginVec, duration, false, curve);

                        tempMove.AddEventOnetime
                        (
                            EventType.ForwardFinish,
                            () =>
                            {
                                OnForwardFinish.SafeInvoke();
                            }
                        );
                    },
                    stay
                );
            }
        );
    }
}