refactor(entity): 重构实体数据定义方式

core/src/main/java/net/momirealms/craftengine/core/entity/data/ClassTreeIdRegistry.java

@@ -0,0 +1,37 @@
+package net.momirealms.craftengine.core.entity.data;
+
+import it.unimi.dsi.fastutil.objects.Object2IntMap;
+import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap;
+import net.momirealms.craftengine.core.plugin.CraftEngine;
+
+public class ClassTreeIdRegistry {
+    private final Object2IntMap<Class<?>> classToLastIdCache = new Object2IntOpenHashMap<>();
+
+    public ClassTreeIdRegistry() {
+        classToLastIdCache.defaultReturnValue(-1);
+    }
+
+    public int getLastIdFor(Class<?> clazz) {
+        int cachedId = this.classToLastIdCache.getInt(clazz);
+        if (cachedId == -1) {
+            Class<?> currentClass = clazz;
+            while ((currentClass = currentClass.getSuperclass()) != Object.class) {
+                int parentCachedId = this.classToLastIdCache.getInt(currentClass);
+                if (parentCachedId != -1) {
+                    return parentCachedId;
+                }
+            }
+            return -1;
+        } else {
+            return cachedId;
+        }
+    }
+
+    public int define(Class<?> clazz) {
+        int lastId = this.getLastIdFor(clazz);
+        int nextId = lastId == -1 ? 0 : lastId + 1;
+        this.classToLastIdCache.put(clazz, nextId);
+        CraftEngine.instance().debug(() -> "Defined " + clazz.getSimpleName() + " with id " + nextId);
+        return nextId;
+    }
+}