feat(entity): 为 EntityData 接口添加 entityDataAccessor 方法并实现

bukkit/src/main/java/net/momirealms/craftengine/bukkit/entity/data/EntityData.java

@@ -7,6 +7,7 @@ public interface EntityData<T> {
     Object serializer();
     int id();
     T defaultValue();
+    Object entityDataAccessor();
 
     default Object createEntityDataIfNotDefaultValue(T value) {
         if (defaultValue().equals(value)) return null;

bukkit/src/main/java/net/momirealms/craftengine/bukkit/entity/data/SimpleEntityData.java

@@ -1,14 +1,18 @@
 package net.momirealms.craftengine.bukkit.entity.data;
 
+import net.momirealms.craftengine.bukkit.nms.FastNMS;
+
 public class SimpleEntityData<T> implements EntityData<T> {
     private final int id;
     private final Object serializer;
     private final T defaultValue;
+    private final Object entityDataAccessor;
 
     public SimpleEntityData(int id, Object serializer, T defaultValue) {
         this.id = id;
         this.serializer = serializer;
         this.defaultValue = defaultValue;
+        this.entityDataAccessor = FastNMS.INSTANCE.constructor$EntityDataAccessor(id, serializer);
     }
 
     @Override
@@ -25,4 +29,9 @@ public class SimpleEntityData<T> implements EntityData<T> {
     public T defaultValue() {
         return defaultValue;
     }
+
+    @Override
+    public Object entityDataAccessor() {
+        return entityDataAccessor;
+    }
 }