117 【武将】武将系统 - 布阵临时版

hch

2025-07-30 bae41593e19d32046f77ed1f036089e015380b99

 Main/Component/UI/Common/DragItem.cs

@@ -1,4 +1,4 @@
//--------------------------------------------------------
//--------------------------------------------------------
//    [Author]:           玩个游戏
//    [  Date ]:           Monday, July 31, 2017
//--------------------------------------------------------
@@ -6,53 +6,103 @@
using System.Collections;
using UnityEngine.EventSystems;
using System;
using UnityEngine.Events;

    public class DragItem:MonoBehaviour,ICanvasRaycastFilter,IBeginDragHandler,IDragHandler,IEndDragHandler {
/// <summary>
/// 拖拽组件，实现拖拽功能并限制拖拽范围
/// </summary>
public class DragItem:MonoBehaviour,ICanvasRaycastFilter,IBeginDragHandler,IDragHandler,IEndDragHandler 
{
    // 拖拽区域限制
    [SerializeField]
    RectTransform m_Area;
    public RectTransform area { get { return m_Area; } }

        [SerializeField]
        RectTransform m_Area;
        public RectTransform area { get { return m_Area; } }
    // 是否允许射线检测
    [SerializeField]
    bool m_RaycastTarget = true;
    public bool raycastTarget {
        get { return m_RaycastTarget; }
        private set { m_RaycastTarget = value; }
    }

        [SerializeField]
        bool m_RaycastTarget = true;
        public bool raycastTarget {
            get { return m_RaycastTarget; }
            private set { m_RaycastTarget = value; }
        }
    [SerializeField] public int pos;

        RectTransform m_RectTransform;
        public RectTransform rectTransform { get { return this.transform as RectTransform; } }
    private Vector3 orgScale;

        public void OnBeginDrag(PointerEventData eventData) {
            raycastTarget = false;
            this.transform.position = UIUtility.ClampWorldPosition(area,eventData);
        }
    // 当前对象的RectTransform组件
    public RectTransform rectTransform { get { return this.transform as RectTransform; } }

        public void OnDrag(PointerEventData eventData) {
            this.transform.position = UIUtility.ClampWorldPosition(area,eventData);
        }
    /// <summary>
    /// 开始拖拽时调用
    /// </summary>
    public void OnBeginDrag(PointerEventData eventData)
    {
        raycastTarget = false;
        this.transform.position = UIUtility.ClampWorldPosition(area, eventData);
        orgScale = rectTransform.localScale;
        rectTransform.localScale = orgScale * 1.2f;
    }

        public void OnEndDrag(PointerEventData eventData) {
            raycastTarget = true;
            if(eventData.pointerEnter == null) {
                return;
    /// <summary>
    /// 拖拽过程中调用
    /// </summary>
    public void OnDrag(PointerEventData eventData) {
        this.transform.position = UIUtility.ClampWorldPosition(area,eventData);
        
        // 检测是否进入目标区域
        if (eventData.pointerEnter != null) {
            var target = eventData.pointerEnter.transform;
            if (target != null) {
                // 进入目标区域，放大 1.2 倍
                target.localScale = Vector3.one * 1.2f;
            }

            var container = eventData.pointerEnter.GetComponent<DragContainer>();
            if(container == null) {
                return;
        } else {
            // 离开目标区域，恢复大小
            if (eventData.pointerPress != null) {
                var target = eventData.pointerPress.transform;
                if (target != null) {
                    target.localScale = Vector3.one;
                }
            }

            var contain = UIUtility.RectTransformContain(eventData.pointerEnter.transform as RectTransform,rectTransform);
            if(contain) {
                rectTransform.position = eventData.pointerEnter.transform.position;
            }
        }

        public bool IsRaycastLocationValid(Vector2 sp,Camera eventCamera) {
            return raycastTarget;
        }
    }

    /// <summary>
    /// 结束拖拽时调用
    /// </summary>
    public Action<int, int> onEndDragEvent;

    public void OnEndDrag(PointerEventData eventData) {
        raycastTarget = true;
        rectTransform.localScale = orgScale;
        
        if (eventData.pointerEnter == null)
        {
            onEndDragEvent?.Invoke(pos, -1);
            return;
        }

        var container = eventData.pointerEnter.GetComponent<DragContainer>();
        if(container == null) {
            onEndDragEvent?.Invoke(pos, -1);
            return;
        }

        // var contain = UIUtility.RectTransformContain(eventData.pointerEnter.transform as RectTransform,rectTransform);
        // if(contain) {
        //     rectTransform.position = eventData.pointerEnter.transform.position;
        // }
        onEndDragEvent?.Invoke(pos, container.pos);
    }

    /// <summary>
    /// 判断射线检测是否有效
    /// </summary>
    public bool IsRaycastLocationValid(Vector2 sp,Camera eventCamera) {
        return raycastTarget;
    }
}