如何在 Java 中将链接列表与我的处理程序 class 一起使用？

Question

I am making a simple game which has an array of objects called beats which move along the screen towards a stationary player like a basic rhythm game, and I have decided that using a linked list is the best way to track the nearest beat to the player

Currently I am trying to add to the linked list, and have this as a starting point:

     public static LinkedList<Beat> beatLinkedList = new LinkedList<Beat>();

The linked list is public and static as it needs to be accessed in a different class.

        int startingPoint = 800;
        //For loop 51 times
        for(int i=0;i<=50;i++){
            //modifier to start position to create differing gaps between beats
            int startModifier = random.nextInt(50);


            beatLinkedList.add(new Beat(startingPoint,300,ID.Beat));
            System.out.println(beatLinkedList.get(0));

            //redefines the starting point for each beat
            startingPoint = startingPoint+50+startModifier;

        }
    }

When I want to render the objects however I need to use the handler class, to add the objects to a linked list of gameobjects which has the render method called on them which I would like to keep the same ideally meaning I need to use the handler classes addObject method:

 public void addObject(GameObject object){
        //linked list built in method to add an object
        this.object.add(object);
    }

For using an array this solution worked

But something similar for the linked list does not

 handler.addObject(beatLinkedList.add(new Beat(startingPoint,300,ID.Beat)));

I should also add that when I get the element at position 0 it outputs all 51 objects which is also a problem.

With trying to use the handler like this I am given an exception saying "addoObject in Handler cannot be applied to boolean" on line 50:

 handler.addObject(beatLinkedList.add(new Beat(startingPoint,300,ID.Beat)));

I'm not sure about this but it seems that I need to give a pointer to a location when using the add method and so I tried this:

beatLinkedList.addLast(new Beat(startingPoint,300,ID.Beat));

And this method still has the problem of adding all 51 objects to the same point in the list, which I imagine is something to do with being in a for loop still.

    handler.addObject(beatLinkedList.addLast(new Beat(startingPoint,300,ID.Beat)));

Trying to utilise this with my handler class results in a different error from before saying that the 'void' type is not allowed as a parameter. I'm really not sure where to go from here.

Answer 1

    beatLinkedList.addLast(new Beat(startingPoint,300,ID.Beat));  
handler.addObject(beatLinkedList.getLast());

Solved thanks to Abra's comment, I decided to add the object to 2 seperate linked lists, one of just the beats, and one containing all the game objects, which allows them to be rendered properly, while also allowing beats to be identified and removed when necessary.