(Unity3D) Saving/Loading 玩家库存

Question

每当通过播放器脚本保存或加载时，库存两边总是空白，我无法弄清楚问题出在哪里。库存使用Unity的中级库存教程中使用的相同系统，它工作正常，但加载时库存总是空白。

玩家

public void Save(){
    Debug.Log ("Saving data (player / inventory)");

    SaveLoadManager.SavePlayer (this); //works fine
    SaveLoadInventory.SaveInventory (inv); //where the issue is
}
public void Load(){
    Debug.Log ("Loading data (player / inventory)");

    float[] loadedStats = SaveLoadManager.LoadPlayer (); //works fine
    Item[] loadedItems = SaveLoadInventory.LoadInventory (); //comes up empty

    inv.items = loadedItems; //try to set the referenced Inventory script array of items equal to the loaded items

    //loadedStats[...] are set to player values and all works good
}

库存

public class Inventory : MonoBehaviour {

public Image[] itemImages = new Image[numItemSlots];
public Text[] itemAmountsText = new Text[numItemSlots];
public int[] itemAmounts = new int[numItemSlots];
public Item[] items = new Item[numItemSlots];

public const int numItemSlots = 40;

public void AddItem(Item itemToAdd){
    for (int i = 0; i < items.Length; i++) {
        if(items [i] == itemToAdd){
            if (itemAmounts [i] <= 99) {
                itemAmounts [i]++;
            } else {
                items [i] = itemToAdd;
                itemImages [i].sprite = itemToAdd.itemImage;
                itemImages [i].enabled = true;
            }
            itemAmountsText [i].text = itemAmounts [i] + "";
            return;
        } else if (items [i] == null) {
            itemAmounts [i]++;
            itemAmountsText [i].text = itemAmounts [i] + "";
            items [i] = itemToAdd;
            itemImages [i].sprite = itemToAdd.itemImage;
            itemImages [i].enabled = true;
            return;
        }
    }
}

public void RemoveItem(Item itemToRemove){
    for (int i = 0; i < items.Length; i++) {
        if (items [i] == itemToRemove) {
            items [i] = null;
            itemImages [i].sprite = null;
            itemImages [i].enabled = false;
            return;
        }
    }
}

public void ClearAllItems(){
    for (int i = 0; i < items.Length; i++) {
        items [i] = null;
        itemImages [i].sprite = null;
        itemImages [i].enabled = false;
        return;
    }
}

[Serializable]
public class InventoryData {
    public Image[] itemImages = new Image[numItemSlots];
    public Text[] itemAmountsText = new Text[numItemSlots];
    public int[] itemAmounts = new int[numItemSlots];
    public Item[] items;

    public InventoryData(Inventory inv){
        items = new Item[numItemSlots];

        for (int i = 0; i < items.Length; i++) {
            inv.items[i] = items[i];
            inv.itemAmounts[i] = itemAmounts[i];
            inv.itemAmountsText[i] = itemAmountsText[i];
            inv.itemImages[i] = itemImages[i];
            }
        }
    }
}

保存加载清单

public static class SaveLoadInventory {

    public static void SaveInventory(Inventory inv){

    BinaryFormatter bf = new BinaryFormatter();
    var createdir = Directory.CreateDirectory(Application.persistentDataPath + "/saves");
    String dir = Application.persistentDataPath + "/saves";
    Inventory.InventoryData data = new Inventory.InventoryData (inv);

    DirectoryInfo dir_i = new DirectoryInfo(dir);
    FileInfo[] info = dir_i.GetFiles("*.inv");
    foreach (FileInfo f in info) {
        Debug.Log (f);
    }

    FileStream stream = new FileStream (dir + "/player" + (info.Length + 1) + ".inv", FileMode.Create);

    bf.Serialize (stream, data);
    stream.Close ();

}

    public static Item[] LoadInventory(){
    String dir = Application.persistentDataPath + "/saves";

    DirectoryInfo dir_i = new DirectoryInfo(dir);
    FileInfo[] info = dir_i.GetFiles("*.inv");
    foreach (FileInfo f in info) {
        Debug.Log (f);
    }

    if (info.Length >= 1) {

        BinaryFormatter bf = new BinaryFormatter ();
        var createdir = Directory.CreateDirectory(Application.persistentDataPath + "/saves");
        FileStream stream = new FileStream (dir + "/player" + (info.Length) + ".inv", FileMode.Open);
        Inventory.InventoryData data = bf.Deserialize (stream) as Inventory.InventoryData;

        stream.Close ();
        return data.items;
    } else {
        return null;
    }
}

老实说，我会为此尝试一些调试组合并自己弄清楚，但是这一切似乎太复杂了，我无法理解并且一直担心它永远不会起作用。如果您有任何帮助或建议，我们将不胜感激。

Answer 1

but the inventory is always blank when loading.

第一个问题是您要在 InventoryData class 中序列化的变量类型。您不能直接序列化 Image 和 Text 组件，因为它们是 UnityEngine.Object 类型。对于 Image 组件，保存 Image 组件正在使用的 Sprite 的路径。对于 Text 组件，保存保存文本本身的 .text 属性的值。

如果要为 Image 或 Text 组件序列化多个属性，最好创建一个新的可序列化 class/wrapper，它将保存要为 Image 组件序列化的重要数据和另一个要为 Text 组件序列化的重要数据。

例如，假设您想要序列化有关 Text 组件的信息，例如字体大小、实际文本和颜色，这里是一个简单的包装器示例：

[Serializable]
public class TextWrapper
{
    public int fontSize;
    public string text;
    public Color color;

    public TextWrapper(Text text)
    {

        //Get Text Info
        fontSize = text.fontSize;
        this.text = text.text;
        color = text.color;
    }
}

要序列化的 Text 组件：

public Text myText;

您可以从 Text 组件创建 TextWrapper 的新实例以序列化：

TextWrapper textWrapper = new TextWrapper(myText);

现在，您可以在问题中使用 BinaryFormatter 序列化它。您可以将 TextWrapper 变量放在 InventoryData class 中，这也应该序列化。

注意 TextWrapper 必须放在它自己的 .cs 文件中，否则 BinaryFormatter 可能会归档到 serialize/deserialize 它。如果您在使用 .. 时仍有问题，请使用 Json。请参阅 post 了解更多信息。

(Unity3D) Saving/Loading 玩家库存

(Unity3D) Saving/Loading Player Inventory

c#

load

save

unity3d