#915: Add support for virtual entities

By: Jishuna <joshl5324@gmail.com>

paper-api/src/main/java/org/bukkit/entity/EntitySnapshot.java

@@ -0,0 +1,39 @@
+package org.bukkit.entity;
+
+import org.bukkit.Location;
+import org.bukkit.World;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Represents an immutable copy of an entity's state. Can be used at any time to
+ * create an instance of the stored entity.
+ */
+public interface EntitySnapshot {
+
+    /**
+     * Creates an entity using this template. Does not spawn the copy in the world.
+     * <br>
+     *
+     * @param world the world to create the entity in
+     * @return a copy of this entity.
+     */
+    @NotNull
+    Entity createEntity(@NotNull World world);
+
+    /**
+     * Creates an entity using this template and spawns it at the provided location.
+     *
+     * @param to the location to copy to
+     * @return the new entity.
+     */
+    @NotNull
+    Entity createEntity(@NotNull Location to);
+
+    /**
+     * Gets the type of entity this template holds.
+     *
+     * @return the type
+     */
+    @NotNull
+    EntityType getEntityType();
+}