MRClass/Assets/Resources/Biology/CoursewareItem.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CoursewareItem : MonoBehaviour {
    [SerializeField]
    private CoursewareDir ShowDir;
    [SerializeField]
    private float ShowScaleRate = 2;//放大倍数
    private Transform startPar;//初始的根节点
    private Vector3 startPos;//初始的位置
    private Vector3 startScale;//初始大小
    private bool isShow = false;//是否正在被焦点展示
    
    void Start () {
        startPar = this.transform.parent;
        startPos = this.transform.position;
        startScale = this.transform.localScale;
    }

    // Update is called once per frame
    private void LateUpdate() {
		if(Input.GetKeyDown(KeyCode.P))
        {
            Show();
        }
        if (Input.GetKeyUp(KeyCode.P))
        {
            //Hide();
        }
        RefreshTween();
    }

    private float showDis = 0.25f;
    private Vector3 GetShowPos()
    {
        var pos = Vector3.zero;
        switch(ShowDir)
        {
            case CoursewareDir.Up:
                pos = Vector3.up;
                break;
            case CoursewareDir.Down:
                pos = Vector3.down;
                break;
            case CoursewareDir.Left:
                pos = Vector3.left;
                break;
            case CoursewareDir.Right:
                pos = Vector3.right;
                break;
            case CoursewareDir.LeftUp:
                pos = Vector3.up + Vector3.left;
                break;
            case CoursewareDir.LeftDown:
                pos = Vector3.down + Vector3.left;
                break;
            case CoursewareDir.RightUp:
                pos = Vector3.up + Vector3.right;
                break;
            case CoursewareDir.RightDown:
                pos = Vector3.down + Vector3.right;
                break;
            default:
                pos = Vector3.zero;
                break;
        }

        return pos * showDis + startPos;
    }

    private float suofangNeedTime = 0.5f;//缩放需要的时间
    private void RefreshTween()
    {
        if(isTweening)
        {
            useTime += Time.deltaTime/ suofangNeedTime;
            this.transform.position = Vector3.Lerp(this.transform.position, targetPos, useTime);
            this.transform.localScale = Vector3.Lerp(this.transform.localScale, targetScale, useTime);
            if (useTime >= 1)
            {
                Arrived();
            }
        }
    }

    public bool IsShow
    {
        get { return isShow; }
    }

    public bool IsTweening
    {
        get { return isTweening; }
    }

    public void Show()
    {
        isShow = true;
        this.transform.parent = null;//先放出去
        AddTween(GetShowPos(), startScale * ShowScaleRate);
    }

    private bool isTweening = false;
    private Vector3 targetPos;
    private Vector3 targetScale;
    private Vector3 curPos;
    private Vector3 curScale;
    private float useTime = 0;

    private void AddTween(Vector3 pos, Vector3 scale)
    {
        CDebug.Log("AddTween");
        useTime = 0;
        curPos = this.transform.position;
        curScale = this.transform.localScale;
        isTweening = true;
        targetPos = pos;
        targetScale = scale;
    }

    //动画结束的位置
    private void Arrived()
    {
        CDebug.Log("欢动完成");
        isTweening = false;
        //关闭了
        if (!isShow)
        {
            this.transform.parent = startPar;//归位
        }
    }

    public void Hide()
    {
        isShow = false;
        AddTween(startPos, startScale);
    }

    public void QiangzhiHide()
    {
        isShow = false;
        this.transform.parent = startPar;//归位
        this.transform.position = startPos;
        this.transform.localScale = startScale;
    }
}