Metadata utilities

api/src/main/java/me/tofaa/entitylib/meta/EntityMeta.java

@@ -63,6 +63,15 @@ public class EntityMeta implements EntityMetadataProvider {
         this.metadata = metadata;
     }
 
+    public EntityMeta(EntityMeta other) {
+        this(other.entityId, new Metadata(other.entityId));
+        metadata.setMetaFromPacket(other.createPacket());
+    }
+
+    public EntityMeta(int entityId) {
+        this(entityId, new Metadata(entityId));
+    }
+
     public void setNotifyAboutChanges(boolean notifyAboutChanges) {
         metadata.setNotifyAboutChanges(notifyAboutChanges);
     }

api/src/main/java/me/tofaa/entitylib/meta/Metadata.java

@@ -19,13 +19,33 @@ public class Metadata {
 
     private final int entityId;
     private volatile boolean notifyAboutChanges = true;
-    private final Map<Byte, EntityData> notNotifiedChanges = new HashMap<>();
+    private final HashMap<Byte, EntityData> notNotifiedChanges = new HashMap<>();
-    private final Map<Byte, EntityData> metadataMap = new ConcurrentHashMap<>();
+    private final ConcurrentHashMap<Byte, EntityData> metadataMap = new ConcurrentHashMap<>();
 
     public Metadata(int entityId) {
         this.entityId = entityId;
     }
 
+    public void copyTo(Metadata other) {
+        other.clear();
+        synchronized (other.notNotifiedChanges) {
+            other.notNotifiedChanges.putAll(notNotifiedChanges);
+        }
+        other.metadataMap.putAll(metadataMap);
+    }
+
+    public void copyFrom(Metadata other) {
+        other.copyTo(this); // Scuffed pepelaugh
+    }
+
+    /**
+     * Clears the internal metadata map, is not responsible for informing the clients entity view with the newly reset information
+     */
+    public void clear() {
+        this.metadataMap.clear();
+        this.notNotifiedChanges.clear();
+    }
+
     public <T> T getIndex(byte index, @Nullable T defaultValue) {
         EntityData value = this.metadataMap.get(index);
         return value != null ? (T) value.getValue() : defaultValue;

build.gradle.kts

@@ -1,6 +1,6 @@
 import java.io.ByteArrayOutputStream
 
-val fullVersion = "3.0.0"
+val fullVersion = "3.0.1"
 val snapshot = true
 
 group = "me.tofaa.entitylib"