Added passenger methods to Vehicle/LivingEntity.

src/main/java/net/minecraft/server/Entity.java

@@ -829,7 +829,10 @@ public abstract class Entity {
         return (double) J * 0.75D;
     }
 
-    public void e(Entity entity) {
+    public void setPassengerOf(Entity entity) {
+        // e(null) doesn't really fly for overloaded methods,
+        // so this method is needed
+        
         d = 0.0D;
         e = 0.0D;
         if (entity == null) {
@@ -855,6 +858,10 @@ public abstract class Entity {
         k = entity;
         entity.j = this;
     }
+    
+    public void e(Entity entity) {
+        setPassengerOf(entity);
+    }
 
     public Vec3D C() {
         return null;

src/main/java/org/bukkit/craftbukkit/CraftEntity.java

@@ -5,6 +5,7 @@ import net.minecraft.server.Entity;
 import net.minecraft.server.WorldServer;
 import org.bukkit.Location;
 import org.bukkit.Vector;
+import org.bukkit.Vehicle;
 import org.bukkit.World;
 
 public abstract class CraftEntity implements org.bukkit.Entity {

src/main/java/org/bukkit/craftbukkit/CraftLivingEntity.java

@@ -11,6 +11,7 @@ import org.bukkit.Arrow;
 import org.bukkit.Egg;
 import org.bukkit.LivingEntity;
 import org.bukkit.Snowball;
+import org.bukkit.Vehicle;
 
 public class CraftLivingEntity extends CraftEntity implements LivingEntity {
     private EntityLiving entity;
@@ -61,11 +62,36 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
         return new CraftSnowball(server, snowball);
     }
 
-    @Override
     public Arrow shootArrow() {
         net.minecraft.server.World world = ((CraftWorld)getWorld()).getHandle();
         EntityArrow snowball = new EntityArrow(world, entity);
         world.a(snowball);
         return new CraftArrow(server, snowball);
     }
+
+    public boolean isInsideVehicle() {
+        return entity.k != null;
+    }
+
+    public boolean leaveVehicle() {
+        if (entity.k == null) {
+            return false;
+        }
+        
+        entity.setPassengerOf(null);
+        return true;
+    }
+
+    public Vehicle getVehicle() {
+        if (entity.k == null) {
+            return null;
+        }
+        
+        org.bukkit.Entity vehicle = ((CraftWorld)getWorld()).toCraftEntity(entity.k);
+        if (vehicle instanceof Vehicle) {
+            return (Vehicle)vehicle;
+        }
+        
+        return null;
+    }
 }

src/main/java/org/bukkit/craftbukkit/CraftVehicle.java

@@ -17,8 +17,22 @@ public abstract class CraftVehicle extends CraftEntity implements Vehicle {
     public Entity getPassenger() {
         return ((CraftWorld)getWorld()).toCraftEntity(getHandle().j);
     }
+    
+    public boolean setPassenger(Entity passenger) {
+        ((CraftEntity)passenger).getHandle().setPassengerOf(getHandle());
+        return true;
+    }
 
     public boolean isEmpty() {
         return getHandle().j == null;
     }
+    
+    public boolean eject() {
+        if (getHandle().j == null) {
+            return false;
+        }
+        
+        getHandle().j.setPassengerOf(null);
+        return true;
+    }
 }