add TeleportUtils

Author: cyilin

Diff for: build.gradle

@@ -32,12 +32,20 @@ repositories {
         name 'nu-langchecker'
         url 'https://raw.githubusercontent.com/Librazy/NyaaUtilsLangChecker/maven-repo'
     }
+
+    maven {
+        name 'ess-repo'
+        url 'http://repo.ess3.net/content/groups/essentials'
+    }
 }
 
 dependencies {
     compile 'org.spigotmc:spigot-api:1.12-R0.1-SNAPSHOT'
     compile 'net.milkbowl.vault:VaultAPI:1.6'
     compile 'org.librazy:NyaaUtilsLangChecker:1.0-SNAPSHOT'
+    compile('net.ess3:Essentials:2.13-SNAPSHOT') {
+        transitive = false
+    }
 }
 
 compileJava {

Diff for: src/main/java/cat/nyaa/nyaacore/utils/TeleportUtils.java

@@ -0,0 +1,38 @@
+package cat.nyaa.nyaacore.utils;
+
+import com.earth2me.essentials.Essentials;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.entity.Player;
+import org.bukkit.event.player.PlayerTeleportEvent;
+
+import java.util.List;
+
+public class TeleportUtils {
+
+    public void Teleport(Player player, Location loc) {
+        if (!player.isOnline()) {
+            return;
+        }
+        Essentials ess = null;
+        if (Bukkit.getServer().getPluginManager().getPlugin("Essentials") != null) {
+            ess = (Essentials) Bukkit.getServer().getPluginManager().getPlugin("Essentials");
+        }
+        if (ess != null) {
+            try {
+                ess.getUser(player).getTeleport().now(loc, false, PlayerTeleportEvent.TeleportCause.PLUGIN);
+                return;
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+            player.setFallDistance(0);
+            player.teleport(loc, PlayerTeleportEvent.TeleportCause.PLUGIN);
+        }
+    }
+
+    public void Teleport(List<Player> players, Location loc) {
+        for (Player p : players) {
+            Teleport(p, loc);
+        }
+    }
+}

Diff for: src/main/resources/plugin.yml

@@ -3,5 +3,6 @@ main: cat.nyaa.nyaacore.NyaaCoreLoader
 description: "Code infrastructure for all NyaaCat plugins."
 version: 3.0
 depend: [Vault]
+softdepend: [Essentials]
 authors: [RecursiveG,Librazy]
 website: "https://github.com/NyaaCat/NyaaCore"