我正在构建一个纸牌游戏，我希望有一个干净的纸牌能力架构。
我有一个带有卡片属性的 CardData ScriptableObject。我希望卡片的异能组合在一起来描述卡片的作用，比如一张名为 的卡片。 DrawAndHealCard 打出 2 张牌并治疗 5 点生命值。
我马上意识到这意味着我需要为 CardAbility 的每个变体提供一个具体的 Assets 。所以 DrawAndHealCard 引用了两个 Assets :抽奖卡2 和 HealPlayer5 .这太荒谬了，我希望所有数据都像在一个 DrawAndHealCard 上一样。
于是我了解到AssetDatabase.AddObjectToAsset() ，这似乎是正确的想法，我可以将能力作为 CardData Assets 的子 Assets ，而不必处理所有这些单独 Assets 的组织。所以现在我正在尝试构建一个 Editor管理这个，这是痛苦的。
我已经阅读了很多关于 Unity 序列化、SO、编辑器脚本等的内容……严重地撞到了这堵墙，并且即将降级到在架构上感觉不那么优雅的东西。如果有更好的方法来做到这一点，我也愿意接受关于完全不同路线的建议。
下面的代码被精简了，但它是我试图弄清楚的要点。
我现在所在的位置是 onAddCallback似乎正确添加了子 Assets ，但 onRemoveCallback不删除它。我的 清除所有能力 按钮确实有效。我找不到关于这些东西的任何好的文档或指南，所以我现在很迷茫。
// CardData.cs
[CreateAssetMenu(fileName = "CardData", menuName = "Card Game/CardData", order = 1)]
public class CardData : ScriptableObject
{
public Sprite image;
public string description;
public CardAbility[] onPlayed;
}
// CardAbility.cs
public class CardAbility : ScriptableObject
{
public abstract void Resolve();
}
// DrawCards.cs
public class DrawCards : CardAbility
{
public int numCards = 1;
public override void Resolve()
{
Deck.instance.DrawCards(numCards);
}
}
// HealPlayer.cs
public class HealPlayer : CardAbility
{
public int healAmt = 10;
public override void Resolve()
{
Player.instance.Heal(healAmt);
}
}
// CardDataEditor.cs
[CustomEditor(typeof(CardData))]
public class CardDataEditor : Editor
{
private ReorderableList abilityList;
public void OnEnable()
{
abilityList = new ReorderableList(
serializedObject,
serializedObject.FindProperty("onPlayed"),
draggable: true,
displayHeader: true,
displayAddButton: true,
displayRemoveButton: true);
abilityList.onRemoveCallback = (ReorderableList l) => {
l.serializedProperty.serializedObject.Update();
var obj = l.serializedProperty.GetArrayElementAtIndex(l.index).objectReferenceValue;
DestroyImmediate(obj, true);
AssetDatabase.SaveAssets();
l.serializedProperty.DeleteArrayElementAtIndex(l.index);
l.serializedProperty.serializedObject.ApplyModifiedProperties();
};
abilityList.onAddCallback = (ReorderableList l) => {
var index = l.serializedProperty.arraySize;
l.serializedProperty.arraySize++;
l.index = index;
var element = l.serializedProperty.GetArrayElementAtIndex(index);
// Hard coding a specific ability for now
var cardData = (CardData)target;
var newAbility = ScriptableObject.CreateInstance<DrawCards>();
newAbility.name = "test";
newAbility.numCards = 22;
element.objectReferenceValue = newAbility;
AssetDatabase.AddObjectToAsset(newAbility, cardData);
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
serializedObject.ApplyModifiedProperties();
};
// Will use this to provide a menu of abilities to choose from.
/*
abilityList.onAddDropdownCallback = (Rect buttonRect, ReorderableList l) => {
var menu = new GenericMenu();
var guids = AssetDatabase.FindAssets("", new[]{"Assets/CardAbility"});
foreach (var guid in guids) {
var path = AssetDatabase.GUIDToAssetPath(guid);
menu.AddItem(new GUIContent("Mobs/" + Path.GetFileNameWithoutExtension(path)), false, clickHandler, new WaveCreationParams() {Type = MobWave.WaveType.Mobs, Path = path});
}
menu.ShowAsContext();
};
*/
// Will use this to render CardAbility properties
/*
abilityList.drawElementCallback = (Rect rect, int index, bool isActive, bool isFocused) => {
};
*/
}
public override void OnInspectorGUI()
{
serializedObject.Update();
DrawDefaultInspector();
abilityList.DoLayoutList();
// XXX: Ultimately don't expect to use these, experimenting with
// other ways of adding/deleting.
if (GUILayout.Button("Add Ability")) {
var cardData = (CardData)target;
var newAbility = ScriptableObject.CreateInstance<CardAbility>();
AssetDatabase.AddObjectToAsset(newAbility, cardData);
AssetDatabase.SaveAssets();
}
if (GUILayout.Button("Clear All Abilities")) {
var path = AssetDatabase.GetAssetPath(target);
Object[] assets = AssetDatabase.LoadAllAssetRepresentationsAtPath(path);
for (int i = 0; i < assets.Length; i++) {
if (assets[i] is CardAbility) {
Object.DestroyImmediate(assets[i], true);
}
}
AssetDatabase.SaveAssets();
}
serializedObject.ApplyModifiedProperties();
}
}
最佳答案
好吧，我终于想通了。我阅读了一百篇堆栈溢出和论坛帖子试图理解这一点，所以我正在支付它，希望这可以帮助其他人解决这个问题。这会生成一个如下图所示的编辑器，其中 OnPlayed 是一个多态 ScriptableObjects 数组。这些 CardAbility SO 作为子 Assets 存储在拥有的 ScriptableObject (CardData) 上。还有更多要在这里清理，它可以变得更通用，但对于尝试这样做的其他人来说应该是一个好的开始。
[+] 按钮生成可添加的所有 CardAbility SO 的列表。
并且具体 CardAbility 的属性是动态呈现的。
关于这一切最奇怪的事情之一是您无法渲染 objectReferenceValue 的内容。使用 PropertyField ，你必须构造一个 SerializedObject首先是这样的:SerializedObject nestedObject = new SerializedObject(element.objectReferenceValue);感谢 Unity: Inspector can't find field of ScriptableObject对于那个小费。
ReorderableList 的其他一些重要资源:
// CardData.cs
[CreateAssetMenu(fileName = "CardData", menuName = "Card Game/CardData", order = 1)]
public class CardData : ScriptableObject
{
public enum CardType
{
Attack,
Skill
}
public CardType type;
public Sprite image;
public string description;
// XXX: Hidden in inspector because it will be drawn by custom Editor.
[HideInInspector]
public CardAbility[] onPlayed;
}
// CardAbility.cs
public abstract class CardAbility : ScriptableObject
{
public abstract void Resolve();
}
// DrawCards.cs
public class DrawCards : CardAbility
{
public int numCards = 1;
public override void Resolve()
{
Deck.instance.DrawCards(numCards);
}
}
// HealPlayer.cs
public class HealPlayer : CardAbility
{
public int healAmount = 10;
public override void Resolve()
{
Player.instance.Heal(healAmount);
}
}
// CardDataEditor.cs
[CustomEditor(typeof(CardData))]
[CanEditMultipleObjects]
public class CardDataEditor : Editor
{
private ReorderableList abilityList;
private SerializedProperty onPlayedProp;
private struct AbilityCreationParams {
public string Path;
}
public void OnEnable()
{
onPlayedProp = serializedObject.FindProperty("onPlayed");
abilityList = new ReorderableList(
serializedObject,
onPlayedProp,
draggable: true,
displayHeader: true,
displayAddButton: true,
displayRemoveButton: true);
abilityList.drawHeaderCallback = (Rect rect) => {
EditorGUI.LabelField(rect, "OnPlayed Abilities");
};
abilityList.onRemoveCallback = (ReorderableList l) => {
var element = l.serializedProperty.GetArrayElementAtIndex(l.index);
var obj = element.objectReferenceValue;
AssetDatabase.RemoveObjectFromAsset(obj);
DestroyImmediate(obj, true);
l.serializedProperty.DeleteArrayElementAtIndex(l.index);
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
ReorderableList.defaultBehaviours.DoRemoveButton(l);
};
abilityList.drawElementCallback = (Rect rect, int index, bool isActive, bool isFocused) => {
SerializedProperty element = onPlayedProp.GetArrayElementAtIndex(index);
rect.y += 2;
rect.width -= 10;
rect.height = EditorGUIUtility.singleLineHeight;
if (element.objectReferenceValue == null) {
return;
}
string label = element.objectReferenceValue.name;
EditorGUI.LabelField(rect, label, EditorStyles.boldLabel);
// Convert this element's data to a SerializedObject so we can iterate
// through each SerializedProperty and render a PropertyField.
SerializedObject nestedObject = new SerializedObject(element.objectReferenceValue);
// Loop over all properties and render them
SerializedProperty prop = nestedObject.GetIterator();
float y = rect.y;
while (prop.NextVisible(true)) {
if (prop.name == "m_Script") {
continue;
}
rect.y += EditorGUIUtility.singleLineHeight;
EditorGUI.PropertyField(rect, prop);
}
nestedObject.ApplyModifiedProperties();
// Mark edits for saving
if (GUI.changed) {
EditorUtility.SetDirty(target);
}
};
abilityList.elementHeightCallback = (int index) => {
float baseProp = EditorGUI.GetPropertyHeight(
abilityList.serializedProperty.GetArrayElementAtIndex(index), true);
float additionalProps = 0;
SerializedProperty element = onPlayedProp.GetArrayElementAtIndex(index);
if (element.objectReferenceValue != null) {
SerializedObject ability = new SerializedObject(element.objectReferenceValue);
SerializedProperty prop = ability.GetIterator();
while (prop.NextVisible(true)) {
// XXX: This logic stays in sync with loop in drawElementCallback.
if (prop.name == "m_Script") {
continue;
}
additionalProps += EditorGUIUtility.singleLineHeight;
}
}
float spacingBetweenElements = EditorGUIUtility.singleLineHeight / 2;
return baseProp + spacingBetweenElements + additionalProps;
};
abilityList.onAddDropdownCallback = (Rect buttonRect, ReorderableList l) => {
var menu = new GenericMenu();
var guids = AssetDatabase.FindAssets("", new[]{"Assets/CardAbility"});
foreach (var guid in guids) {
var path = AssetDatabase.GUIDToAssetPath(guid);
var type = AssetDatabase.LoadAssetAtPath(path, typeof(UnityEngine.Object));
if (type.name == "CardAbility") {
continue;
}
menu.AddItem(
new GUIContent(Path.GetFileNameWithoutExtension(path)),
false,
addClickHandler,
new AbilityCreationParams() {Path = path});
}
menu.ShowAsContext();
};
}
private void addClickHandler(object dataObj) {
// Make room in list
var data = (AbilityCreationParams)dataObj;
var index = abilityList.serializedProperty.arraySize;
abilityList.serializedProperty.arraySize++;
abilityList.index = index;
var element = abilityList.serializedProperty.GetArrayElementAtIndex(index);
// Create the new Ability
var type = AssetDatabase.LoadAssetAtPath(data.Path, typeof(UnityEngine.Object));
var newAbility = ScriptableObject.CreateInstance(type.name);
newAbility.name = type.name;
// Add it to CardData
var cardData = (CardData)target;
AssetDatabase.AddObjectToAsset(newAbility, cardData);
AssetDatabase.SaveAssets();
element.objectReferenceValue = newAbility;
serializedObject.ApplyModifiedProperties();
}
public override void OnInspectorGUI()
{
serializedObject.Update();
DrawDefaultInspector();
abilityList.DoLayoutList();
if (GUILayout.Button("Delete All Abilities")) {
var path = AssetDatabase.GetAssetPath(target);
Object[] assets = AssetDatabase.LoadAllAssetRepresentationsAtPath(path);
for (int i = 0; i < assets.Length; i++) {
if (assets[i] is CardAbility) {
Object.DestroyImmediate(assets[i], true);
}
}
AssetDatabase.SaveAssets();
}
serializedObject.ApplyModifiedProperties();
}
}
关于c# - 为嵌套的 ScriptableObjects 构建编辑器以在纸牌游戏中组合能力，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/62768791/