#630 Disable collisions for unlogged players

src/main/java/fr/xephi/authme/process/join/AsynchronousJoin.java

@@ -27,10 +27,14 @@ import fr.xephi.authme.util.Utils.GroupType;
 import org.bukkit.Location;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
+import org.bukkit.inventory.PlayerInventory;
+import org.bukkit.entity.LivingEntity;
 import org.bukkit.potion.PotionEffect;
 import org.bukkit.potion.PotionEffectType;
 import org.bukkit.scheduler.BukkitTask;
 
+import com.comphenix.protocol.reflect.MethodUtils;
+
 /**
  */
 public class AsynchronousJoin implements Process {
@@ -42,6 +46,9 @@ public class AsynchronousJoin implements Process {
     private final ProcessService service;
     private final PlayerCache playerCache;
 
+    private final boolean disableCollisions = MethodUtils
+            .getAccessibleMethod(LivingEntity.class, "setCollidable", new Class[]{}) != null;
+
     public AsynchronousJoin(Player player, AuthMe plugin, DataSource database, PlayerCache playerCache,
                             ProcessService service) {
         this.player = player;
@@ -89,6 +96,10 @@ public class AsynchronousJoin implements Process {
             });
             return;
         }
+        // Prevent player collisions in 1.9
+        if (disableCollisions) {
+            ((LivingEntity) player).setCollidable(false);
+        }
         final Location spawnLoc = service.getSpawnLoader().getSpawnLocation(player);
         final boolean isAuthAvailable = database.isAuthAvailable(name);
         if (isAuthAvailable) {