Updated Gradle

Bukkit/src/main/java/com/plotsquared/bukkit/util/OfflinePlayerUtil.java

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+package com.plotsquared.bukkit.util;
+
+import static com.intellectualcrafters.plot.util.ReflectionUtils.callConstructor;
+import static com.intellectualcrafters.plot.util.ReflectionUtils.callMethod;
+import static com.intellectualcrafters.plot.util.ReflectionUtils.getCbClass;
+import static com.intellectualcrafters.plot.util.ReflectionUtils.getNmsClass;
+import static com.intellectualcrafters.plot.util.ReflectionUtils.getUtilClass;
+import static com.intellectualcrafters.plot.util.ReflectionUtils.makeConstructor;
+import static com.intellectualcrafters.plot.util.ReflectionUtils.makeMethod;
+
+import org.bukkit.Bukkit;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.Player;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.util.UUID;
+
+public class OfflinePlayerUtil {
+
+    public static Player loadPlayer(final String name) {
+        return loadPlayer(Bukkit.getOfflinePlayer(name));
+    }
+
+    public static Player loadPlayer(final UUID id) {
+        return loadPlayer(Bukkit.getOfflinePlayer(id));
+    }
+
+    public static Player loadPlayer(final OfflinePlayer player) {
+        if (player == null) {
+            return null;
+        }
+        if (player instanceof Player) {
+            return (Player) player;
+        }
+        return loadPlayer(player.getUniqueId(), player.getName());
+    }
+
+    private static Player loadPlayer(final UUID id, final String name) {
+        final Object server = getMinecraftServer();
+        final Object interactManager = newPlayerInteractManager();
+        final Object worldServer = getWorldServer();
+        final Object profile = newGameProfile(id, name);
+        final Class<?> entityPlayerClass = getNmsClass("EntityPlayer");
+        final Constructor entityPlayerConstructor = makeConstructor(entityPlayerClass, getNmsClass("MinecraftServer"), getNmsClass("WorldServer"),
+                getUtilClass("com.mojang.authlib.GameProfile"),
+                getNmsClass("PlayerInteractManager"));
+        final Object entityPlayer = callConstructor(entityPlayerConstructor, server, worldServer, profile, interactManager);
+        return (Player) getBukkitEntity(entityPlayer);
+    }
+
+    private static Object newGameProfile(final UUID id, final String name) {
+        final Class<?> gameProfileClass = getUtilClass("com.mojang.authlib.GameProfile");
+        if (gameProfileClass == null) { //Before uuids
+            return name;
+        }
+        Constructor gameProfileConstructor = makeConstructor(gameProfileClass, UUID.class, String.class);
+        if (gameProfileConstructor == null) { //Verson has string constructor
+            gameProfileConstructor = makeConstructor(gameProfileClass, String.class, String.class);
+            return callConstructor(gameProfileConstructor, id.toString(), name);
+        } else { //Version has uuid constructor
+            return callConstructor(gameProfileConstructor, id, name);
+        }
+    }
+
+    private static Object newPlayerInteractManager() {
+        final Object worldServer = getWorldServer();
+        final Class<?> playerInteractClass = getNmsClass("PlayerInteractManager");
+        final Class<?> worldClass = getNmsClass("World");
+        final Constructor c = makeConstructor(playerInteractClass, worldClass);
+        return callConstructor(c, worldServer);
+    }
+
+    private static Object getWorldServer() {
+        final Object server = getMinecraftServer();
+        final Class<?> minecraftServerClass = getNmsClass("MinecraftServer");
+        final Method getWorldServer = makeMethod(minecraftServerClass, "getWorldServer", int.class);
+        return callMethod(getWorldServer, server, 0);
+    }
+
+    //NMS Utils
+
+    private static Object getMinecraftServer() {
+        return callMethod(makeMethod(getCbClass("CraftServer"), "getServer"), Bukkit.getServer());
+    }
+
+    private static Entity getBukkitEntity(final Object o) {
+        final Method getBukkitEntity = makeMethod(o.getClass(), "getBukkitEntity");
+        return callMethod(getBukkitEntity, o);
+    }
+}