enabling some underwater mechanics

common/src/main/java/immersive_aircraft/entity/EngineVehicle.java

@@ -87,6 +87,10 @@ protected float getEngineReactionSpeed() {
         return 20.0f;
     }
 
+    public boolean worksUnderWater() {
+        return false;
+    }
+
     @Override
     protected void defineSynchedData() {
         super.defineSynchedData();
@@ -104,7 +108,7 @@ public void tick() {
         enginePower.setSteps(getEngineReactionSpeed() / getProperties().get(VehicleStat.ACCELERATION));
 
         // spin up the engine
-        enginePower.update(getEngineTarget() * (wasTouchingWater ? 0.1f : 1.0f));
+        enginePower.update(getEngineTarget() * (isInWater() && !worksUnderWater() ? 0.1f : 1.0f));
 
         // simulate spin up
         engineSpinUpStrength = Math.max(0.0f, engineSpinUpStrength + enginePower.getDiff() - 0.01f);

common/src/main/java/immersive_aircraft/item/VehicleItem.java

@@ -27,17 +27,23 @@ public interface VehicleConstructor {
     }
 
     private final VehicleConstructor constructor;
+    private final boolean onWater;
 
     public VehicleItem(Properties settings, VehicleConstructor constructor) {
+        this(settings, constructor, true);
+    }
+
+    public VehicleItem(Properties settings, VehicleConstructor constructor, boolean onWater) {
         super(settings);
 
         this.constructor = constructor;
+        this.onWater = onWater;
     }
 
     @Override
     public InteractionResultHolder<ItemStack> use(Level world, Player user, InteractionHand hand) {
         ItemStack itemStack = user.getItemInHand(hand);
-        BlockHitResult hitResult = getPlayerPOVHitResult(world, user, ClipContext.Fluid.ANY);
+        BlockHitResult hitResult = getPlayerPOVHitResult(world, user, onWater ? ClipContext.Fluid.ANY : ClipContext.Fluid.NONE);
         if (((HitResult) hitResult).getType() == HitResult.Type.MISS) {
             error(user, "immersive_aircraft.tooltip.no_target");
             return InteractionResultHolder.pass(itemStack);