Method of detecting door objects?

Quote from angriff

Is there an ID or Type where I can detect door objects in the databases?

Where do you want to detect them specifically? In the definitions.db database? Or the world database files?

In the definitions database, there is a "type" column in the objects table which is Door for every door object.

In the world databases (i.e the files stored in your world folder), however, you cannot access this data easily. The game serializes and compresses all objects in a chunk, so they're stored as a non-human-readable blob (binary data).

Usually it's better to use the Plugin API for this.

Quote from angriff

Can you identify a door exactly or is it just by raycast layers? Either will work for what I am experimenting with.

You mean through the Plugin API? If you have an ObjectElement instance, you can get the definition from it via getDefinition() and check if the type is Type.Door. If you're working with events (e.g. if the player interacts with the object), the object events already have a getObject() method to get the according ObjectElement instance directly.

But of course you can also get the object from a raycast. The code to get an object via raycast and check if it's a door could look like this:

player.raycast(10, Layer.getBitmask(Layer.OBJECT), true, (result) -> {
    //Check if we got a result and it's an object
    if (result != null && result.getLayer() == Layer.OBJECT) {
        //Get the object id
        long id = result.getObjectGlobalID();

        //Get the object chunk position
        Vector3i chunkPos = result.getObjectChunkPosition();

        //Get the object element with that id
        ObjectElement o = World.getObject(id, chunkPos.x, chunkPos.y, chunkPos.z);

        //Verify that object is not null
        if (o != null) {
            //Get object definition
            Objects.ObjectDefinition objectDef = o.getDefinition();

            //Check if object is a door (determined by Type.Door)
            if (objectDef.type == Objects.Type.Door) {
                //Do something with the door, e.g. open it via setStatus() etc
            }
        }
    }
});