Gives all passengers the same exit velocity as the root vehicle

src/main/java/net/knarcraft/stargate/portal/teleporter/PlayerTeleporter.java

@@ -49,6 +49,10 @@ public class PlayerTeleporter extends Teleporter {
             }
         }
 
+        //Calculate the exit velocity of the player
+        Vector newVelocityDirection = DirectionHelper.getDirectionVectorFromYaw(portal.getYaw());
+        Vector newVelocity = newVelocityDirection.multiply(velocity * Stargate.getGateConfig().getExitVelocity());
+
         //Load chunks to make sure not to teleport to the void
         loadChunks();
 
@@ -56,7 +60,7 @@ public class PlayerTeleporter extends Teleporter {
         TeleportHelper.teleportLeashedCreatures(player, origin, portal);
 
         if (player.eject()) {
-            TeleportHelper.handleEntityPassengers(passengers, player, origin, portal, exit.getDirection());
+            TeleportHelper.handleEntityPassengers(passengers, player, origin, portal, exit.getDirection(), newVelocity);
         }
 
         //If no event is passed in, assume it's a teleport, and act as such
@@ -69,8 +73,6 @@ public class PlayerTeleporter extends Teleporter {
 
         //Set the velocity of the teleported player after the teleportation is finished
         Bukkit.getScheduler().scheduleSyncDelayedTask(Stargate.getInstance(), () -> {
-            Vector newVelocityDirection = DirectionHelper.getDirectionVectorFromYaw(portal.getYaw());
-            Vector newVelocity = newVelocityDirection.multiply(velocity * Stargate.getGateConfig().getExitVelocity());
             player.setVelocity(newVelocity);
         }, 1);
     }

src/main/java/net/knarcraft/stargate/portal/teleporter/Teleporter.java

@@ -19,6 +19,7 @@ import org.bukkit.entity.AbstractHorse;
 import org.bukkit.entity.Entity;
 import org.bukkit.event.Event;
 import org.bukkit.scheduler.BukkitScheduler;
+import org.bukkit.util.Vector;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -83,7 +84,8 @@ public abstract class Teleporter {
         loadChunks();
 
         if (teleportedEntity.eject()) {
-            TeleportHelper.handleEntityPassengers(passengers, teleportedEntity, origin, portal, exit.getDirection());
+            TeleportHelper.handleEntityPassengers(passengers, teleportedEntity, origin, portal, exit.getDirection(),
+                    new Vector());
         }
         teleportedEntity.teleport(exit);
         return true;

src/main/java/net/knarcraft/stargate/portal/teleporter/VehicleTeleporter.java

@@ -133,7 +133,8 @@ public class VehicleTeleporter extends EntityTeleporter {
      */
     private void teleportVehicle(List<Entity> passengers, Location exit, Vector newVelocity, Portal origin) {
         if (teleportingVehicle.eject()) {
-            TeleportHelper.handleEntityPassengers(passengers, teleportingVehicle, origin, portal, exit.getDirection());
+            TeleportHelper.handleEntityPassengers(passengers, teleportingVehicle, origin, portal, exit.getDirection(),
+                    newVelocity);
         }
         Stargate.debug("VehicleTeleporter::teleportVehicle", "Teleporting " + teleportingVehicle +
                 " to final location " + exit + " with direction " + exit.getDirection());
@@ -172,7 +173,8 @@ public class VehicleTeleporter extends EntityTeleporter {
         }
         //Remove the old vehicle
         if (teleportingVehicle.eject()) {
-            TeleportHelper.handleEntityPassengers(passengers, newVehicle, origin, portal, exit.getDirection());
+            TeleportHelper.handleEntityPassengers(passengers, newVehicle, origin, portal, exit.getDirection(),
+                    newVelocity);
         }
         teleportingVehicle.remove();
         scheduler.scheduleSyncDelayedTask(Stargate.getInstance(), () -> newVehicle.setVelocity(newVelocity), 1);

src/main/java/net/knarcraft/stargate/utility/TeleportHelper.java

@@ -79,8 +79,10 @@ public final class TeleportHelper {
      * @param targetVehicle <p>The entity to add the passenger to</p>
      * @param passenger     <p>The passenger to teleport and add</p>
      * @param exitDirection <p>The direction of any passengers exiting the stargate</p>
+     * @param newVelocity   <p>The new velocity of the teleported passenger</p>
      */
-    public static void teleportAndAddPassenger(Entity targetVehicle, Entity passenger, Vector exitDirection) {
+    public static void teleportAndAddPassenger(Entity targetVehicle, Entity passenger, Vector exitDirection,
+                                               Vector newVelocity) {
         Location passengerExit = targetVehicle.getLocation().clone().setDirection(exitDirection);
         if (!passenger.teleport(passengerExit)) {
             Stargate.debug("TeleportHelper::handleVehiclePassengers", "Failed to teleport passenger" +
@@ -96,6 +98,9 @@ public final class TeleportHelper {
             Stargate.debug("TeleportHelper::handleVehiclePassengers", "Added passenger " + passenger +
                     " to " + targetVehicle);
         }
+        Stargate.debug("VehicleTeleporter::teleportVehicle", "Setting velocity " + newVelocity +
+                " for passenger " + passenger);
+        passenger.setVelocity(newVelocity);
     }
 
     /**
@@ -106,9 +111,10 @@ public final class TeleportHelper {
      * @param origin       <p>The portal the entity teleported from</p>
      * @param target       <p>The portal the entity is teleporting to</p>
      * @param exitRotation <p>The rotation of any passengers exiting the stargate</p>
+     * @param newVelocity  <p>The new velocity of the teleported passengers</p>
      */
     public static void handleEntityPassengers(List<Entity> passengers, Entity entity, Portal origin, Portal target,
-                                              Vector exitRotation) {
+                                              Vector exitRotation, Vector newVelocity) {
         for (Entity passenger : passengers) {
             List<Entity> passengerPassengers = passenger.getPassengers();
             if (!passengerPassengers.isEmpty()) {
@@ -117,14 +123,14 @@ public final class TeleportHelper {
             }
             if (passenger.eject()) {
                 //Teleport any passengers of the passenger
-                handleEntityPassengers(passengerPassengers, passenger, origin, target, exitRotation);
+                handleEntityPassengers(passengerPassengers, passenger, origin, target, exitRotation, newVelocity);
             }
             Bukkit.getScheduler().scheduleSyncDelayedTask(Stargate.getInstance(), () -> {
                 if (passenger instanceof Player player) {
                     //Teleport any creatures leashed by the player in a 15-block range
                     teleportLeashedCreatures(player, origin, target);
                 }
-                teleportAndAddPassenger(entity, passenger, exitRotation);
+                teleportAndAddPassenger(entity, passenger, exitRotation, newVelocity);
             }, passenger instanceof Player ? Stargate.getGateConfig().waitForPlayerAfterTeleportDelay() : 0);
         }
     }