黑暗之光 Day2

1. 鼠标点击UI检测

UICamera.isOverUI

2. 鼠标指针管理

public class CussorManager : MonoBehaviour {
    public static CussorManager instance;       // 单例

    public Texture2D cursorAttack;              // 存储鼠标贴图
    public Texture2D cursorLockTarget;
    public Texture2D cursorNormal;
    public Texture2D cursorNpcTalk;
    public Texture2D cursorPick;

    void Start()
    {
        instance = this;
    }

    public void SetNormal()                     // 设置鼠标为正常
    {
        Cursor.SetCursor(cursorNormal, Vector2.zero, CursorMode.Auto);
    }

    public void SetNpcTalk()                    // 设置鼠标为 Npc_talk
    {
        Cursor.SetCursor(cursorNpcTalk, Vector2.zero, CursorMode.Auto);
    }
}

3. 读取物品文件

public TextAsset objectsInfoText;
private Dictionary<int, ObjectInfo> objectsInfoDict = new Dictionary<int, ObjectInfo>();

// 从文件中读取物品信息
void ReadInfo()
{
    string text = objectsInfoText.text;                    // 获取文本内容
    string[] objectsArr = text.Split('
');                // 以换行符分割字符
    for (int i = 0; i < objectsArr.Length; ++i)            // 遍历每一行
    {
        string[] proArr = objectsArr[i].Split(',');         // 以逗号分割属性
        ObjectInfo info = new ObjectInfo();                 // 物品属性
        info.id = int.Parse(proArr[0]);
        info.name = proArr[1];
        info.iconName = proArr[2];
        string type = proArr[3];
        info.type = ObjectType.Material;
        switch (type)
        {
            case "Drug":
                info.type = ObjectType.Drug;
                break;
            case "Equip":
                info.type = ObjectType.Equipment;
                break;
            case "Mat":
                info.type = ObjectType.Material;
                break;
        }
        if (info.type == ObjectType.Drug)                   // 物品是药品
        {
            info.hp = int.Parse(proArr[4]);
            info.mp = int.Parse(proArr[5]);
            info.sellPrice = int.Parse(proArr[6]);
            info.buyPrice = int.Parse(proArr[7]);
        }
        objectsInfoDict.Add(info.id, info);                  // 加入字典
    }
}

// 根据 ID 查找物品信息
public ObjectInfo GetObjectInfoById(int id)
{
    ObjectInfo info;
    objectsInfoDict.TryGetValue(id, out info);
    return info;
}

4. 物品拖拽

　　继承 UIDragDropItem 类。

5. 模拟拾取物品放入背包

// 根据 id 拾取物品
public void GetId(int id)
{
    InventoryItemGrid grid = null;
    // 查找是否已有该物品
    foreach (InventoryItemGrid temp in itemGridList)
    {
        if (temp.GetId() == id)         // 已有
        {
            grid = temp;
            break;
        }
    }
    if (grid != null)
    {
        grid.PlusNum();                 // 该物品数目+1
    }
    else
    {
        // 查找是否有空格子
        foreach (InventoryItemGrid temp in itemGridList)
        {
            if (temp.GetId() == 0)      // 有空格子
            {
                grid = temp; break;
            }
        }
        if (grid != null)               // 往空格子里放物品
        {
            GameObject itemGo = NGUITools.AddChild(grid.gameObject, inventoryItemPrefab);
            itemGo.transform.localPosition = Vector3.zero;
            itemGo.GetComponent<UISprite>().depth = 4;
            grid.SetId(id);             // 改变各自装的物品
        }
    }
}

// 根据 id 更换格子物品
public void SetId(int id, int num = 1)
{
    info = ObjectsInfo.instance.GetObjectInfoById(id);      // 根据 id 查找物品
    this.id = id;
    this.num = num;
    InventoryItem item = GetComponentInChildren<InventoryItem>();
    item.SetIconName(info.iconName);
    numLabel.enabled = true;
    numLabel.text = num.ToString();
}

6. 物体拖拽实现

protected override void OnDragDropRelease(GameObject surface)
    {
        print(this.tag);
        base.OnDragDropRelease(surface);
        if (surface != null)
        {
            if (surface.tag == Tags.inventoryItemGrid)              
            {
                if (surface != this.transform.parent.gameObject)    // 拖拽到空格子
                {
                    InventoryItemGrid oldGrid = this.transform.parent.GetComponent<InventoryItemGrid>();
                    InventoryItemGrid newGrid = surface.GetComponent<InventoryItemGrid>();
                    newGrid.SetId(oldGrid.GetId(), oldGrid.GetNum());
                    oldGrid.ClearInfo();
                }
            }
            else if (surface.tag == Tags.inventoryItem)             // 拖拽到有物体的格子
            {
                InventoryItemGrid grid1 = this.transform.parent.GetComponent<InventoryItemGrid>();
                InventoryItemGrid grid2 = surface.transform.parent.GetComponent<InventoryItemGrid>();
                int id = grid1.GetId();
                int num = grid1.GetNum();
                grid1.SetId(grid2.GetId(), grid2.GetNum());
                grid2.SetId(id, num);
            }
        }

        ResetPos();
    }

    void ResetPos()
    {
        this.transform.localPosition = Vector3.zero;
    }