在 Unity 中加载序列化的精灵图标

Question

所以我创建了一个 JSON 脚本来序列化和保存 Unity 中的游戏库存，库存项目名称、统计数据等的保存工作正常，但项目的图标加载正确，我得到一个占位符图标“ ？”而是。

我一直在关注：Is it possible to serialize sprites in unity?

但这导致了上面提到的错误。

保存和加载通过以下方式完成：

public class JSONsave 
{

[SerializeField]
Sprite m_InSprite;

SerializeTexture exportObj = new SerializeTexture();
SerializeTexture importObj = new SerializeTexture();

[ContextMenu("serialize")]
public void SerializeTest(CharacterStats PlayerStats)
{
    PlayerSaveData data = new PlayerSaveData(PlayerStats);
    string text = JsonUtility.ToJson(data);
    File.WriteAllText(Application.persistentDataPath + "/playerInfo.dat", text);
}

[ContextMenu("deserialize")]
public PlayerSaveData DeSerializeTest()
{
    string text = File.ReadAllText(Application.persistentDataPath + "/playerInfo.dat");
    //importObj = JsonUtility.FromJson<SerializeTexture>(text);
    PlayerSaveData data = JsonUtility.FromJson<PlayerSaveData>(text);
    return data;
}

[Serializable]
public class SerializeTexture
{
    [SerializeField]
    public int x;
    [SerializeField]
    public int y;
    [SerializeField]
    public byte[] bytes;
}
}

将项目转换为可序列化通过以下方式完成：

 [Serializable]
public class SaveGameEquipment
{
public string name;

[SerializeField]
Sprite m_InSprite;

public bool isDefaultItem;

public EquipmentSlot equipSlot;
public SkinnedMeshRenderer mesh;
public int armorModifier;
public int damage;
public int energy;

SerializeTexture exportObj = new SerializeTexture();


public SaveGameEquipment(Equipment a_item)
{
    //get items sprite
    m_InSprite = a_item.icon;
    //converting sprite to json readable format - 
    Texture2D tex = m_InSprite.texture;
    exportObj.x = tex.width;
    exportObj.y = tex.height;
    exportObj.bytes = ImageConversion.EncodeToPNG(tex);

    name = a_item.name;
    equipSlot = a_item.equipSlot;
    mesh = a_item.mesh;
    armorModifier = a_item.armorModifier;
    damage = a_item.damage;
    energy = a_item.energy;
    isDefaultItem = a_item.isDefaultItem;



}

public class SerializeTexture
{
    [SerializeField]
    public int x;
    [SerializeField]
    public int y;
    [SerializeField]
    public byte[] bytes;
}

最后通过以下方式加载项目：

public void loadItems(PlayerSaveData data)
{

    SaveGameItem.SerializeTexture importObj = new SaveGameItem.SerializeTexture();

    foreach (SaveGameEquipment item in data.wrappedList)
    {
        Equipment n_Item = ScriptableObject.CreateInstance<Equipment>();
        n_Item.name = item.name;

        //sort out the icon
        Texture2D tex = new Texture2D(importObj.x, importObj.y);
        ImageConversion.LoadImage(tex, importObj.bytes);
        Sprite mySprite = Sprite.Create(tex, new Rect(0.0f, 0.0f, tex.width, tex.height), Vector2.one);
        //GetComponent<Equipment>().sprite = mySprite;

        n_Item.icon = mySprite;


        n_Item.equipSlot = item.equipSlot;
        n_Item.mesh = item.mesh;
        n_Item.armorModifier = item.armorModifier;
        n_Item.damage = item.damage;
        n_Item.energy = item.energy;

        n_Item.isDefaultItem = item.isDefaultItem;

        Add(n_Item);
    }
}

在上面，包括 GetComponent 给了我一个 ArgumentException，因为“设备”是一个可编写脚本的对象，不是从 MonoBehaviour 派生的。

提前感谢您提供解决此问题的任何帮助

Answer 1

最好为项目图标使用 ID，并且可以使用字典来存储图标及其各自的 ID。不需要序列化和存储项目图标的副本。试试这样的：

public static Dictionary<int,Texture> itemIcons = new Dictionary<uint, itemIcons>();

public void loadIcons(){
    // Initialize your dictionary with your icons
    itemIcons.Add(id,texture);
    ...
}

public void loadItems(PlayerSaveData data)
{

    SaveGameItem.SerializeTexture importObj = new SaveGameItem.SerializeTexture();

    foreach (SaveGameEquipment item in data.wrappedList)
    {
        Equipment n_Item = ScriptableObject.CreateInstance<Equipment>();
        n_Item.name = item.name;

        //sort out the icon
        Texture2D tex = itemIcons[item.iconID];
        Sprite mySprite = Sprite.Create(tex, new Rect(0.0f, 0.0f, tex.width, tex.height), Vector2.one);
        //GetComponent<Equipment>().sprite = mySprite;

        n_Item.icon = mySprite;


        n_Item.equipSlot = item.equipSlot;
        n_Item.mesh = item.mesh;
        n_Item.armorModifier = item.armorModifier;
        n_Item.damage = item.damage;
        n_Item.energy = item.energy;

        n_Item.isDefaultItem = item.isDefaultItem;

        Add(n_Item);
    }
}

如果对您来说更容易，您还可以将项目存储在这样的数组中：

[SerializeField]
Texture[] itemIcons;

这样您就可以在检查器中分配图标。