src/de/steamwar/lobby/LobbySystem.java

@@ -56,6 +56,7 @@ public class LobbySystem extends JavaPlugin {
         new ParticleListener();
         new InventoryInteraction();
         new WorldInteraction();
+        new PlayerSeatListener();
 
         new AlphaWall(l -> l.getX() > 1199, AlphaWall.REFLECT_X);
         new AlphaWall(l -> l.getX() < 2977, AlphaWall.REFLECT_X);

src/de/steamwar/lobby/listener/PlayerSeatListener.java

@@ -0,0 +1,116 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2021  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.lobby.listener;
+
+import de.steamwar.lobby.LobbySystem;
+import org.bukkit.*;
+import org.bukkit.block.data.Bisected;
+import org.bukkit.block.data.type.Stairs;
+import org.bukkit.entity.AbstractArrow;
+import org.bukkit.entity.Arrow;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.EntityType;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.block.Action;
+import org.bukkit.event.player.PlayerInteractEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.scheduler.BukkitRunnable;
+import org.spigotmc.event.entity.EntityDismountEvent;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public class PlayerSeatListener extends BasicListener{
+
+    public static final World world = Bukkit.getWorlds().get(0);
+
+    private Set<Location> seats = new HashSet<>();
+
+    static {
+        new BukkitRunnable() {
+            @Override
+            public void run() {
+                for(Arrow arrow : world.getEntitiesByClass(Arrow.class)) {
+                    arrow.setTicksLived(1);
+                }
+            }
+        }.runTaskTimer(LobbySystem.getPlugin(), 20*60,20*60);
+    }
+
+    @EventHandler
+    public void onPlayerInteract(PlayerInteractEvent event) {
+        if (event.getAction() != Action.RIGHT_CLICK_BLOCK)
+            return;
+
+        if (!event.getClickedBlock().getType().name().toLowerCase().contains("stairs"))
+            return;
+
+        if (event.getPlayer().getGameMode() != GameMode.ADVENTURE && event.getPlayer().getGameMode() != GameMode.SURVIVAL)
+            return;
+
+        if (((Stairs) event.getClickedBlock().getBlockData()).getHalf() != Bisected.Half.BOTTOM)
+            return;
+
+        if (((Stairs) event.getClickedBlock().getBlockData()).getShape() != Stairs.Shape.STRAIGHT)
+            return;
+
+        if (event.getPlayer().isInsideVehicle() && isArrow(event.getPlayer().getVehicle()))
+            event.getPlayer().getVehicle().remove();
+
+        if (event.getClickedBlock().getRelative(0, 1, 0).getType() != Material.AIR)
+            return;
+
+        Location location = event.getClickedBlock().getLocation();
+        Location seatLocation = getSeatLocation(location);
+        if (seats.contains(seatLocation))
+            return;
+        seats.add(seatLocation);
+
+        Arrow arrow = (Arrow) event.getPlayer().getWorld().spawnEntity(location.add(0.5, 0, 0.5), EntityType.ARROW);
+        arrow.setGravity(false);
+        arrow.setPickupStatus(AbstractArrow.PickupStatus.DISALLOWED);
+        arrow.addPassenger(event.getPlayer());
+        arrow.setPersistent(true);
+    }
+
+    @EventHandler
+    public void onEntityDismount(EntityDismountEvent event) {
+        seats.remove(getSeatLocation(event.getDismounted().getLocation()));
+
+        if (event.getEntityType() != EntityType.PLAYER && !isArrow(event.getDismounted()))
+            return;
+
+        event.getDismounted().remove();
+    }
+
+    @EventHandler
+    public void onPlayerQuit(PlayerQuitEvent event) {
+        if (event.getPlayer().isInsideVehicle() && isArrow(event.getPlayer().getVehicle()))
+            event.getPlayer().getVehicle().remove();
+    }
+
+    public Location getSeatLocation(Location location) {
+        return new Location(world,location.getBlockX(), location.getBlockY(), location.getBlockZ());
+    }
+
+    private boolean isArrow(Entity entity) {
+        return entity.getType() == EntityType.ARROW;
+    }
+}