package Frames;

/**
 * This will handle the next frames to be played by each entity.
 * @author Victor Azra
 */
public class nextFrameBuffer {
	
	private Frame current;
	private nextFrameBuffer next;
	
	/**
	 * creates a new framebuffer, empty for now
	 */
	public nextFrameBuffer() {
		this.current = null;
		this.next = null;
	}
	
	public void setCurrentFrame(Frame f) {
		this.current = f;
	}
	
	public void clone(nextFrameBuffer f) {
		this.current = f.current;
		this.next = f.next;
	}
	
	public void setNext(nextFrameBuffer f) {
		this.next.clone(f);
	}
	
	public void emptyQueue() {
		this.next = null;
	}
	
	public void empty() {
		this.current = null;
		this.next = null;
	}
	
	public void goToNext() {
		this.current = this.next.current;
		this.next = this.next.next;
	}
	
	public Frame getCurrentFrame() {
		return this.current;
	}
	
	public Frame getNextframe() {
		return this.next.current;
	}
	
	/**
	 * Adds a frame at the end of the buffer
	 * @param f the frame to add at the end
	 */
	public void addFrameToQueue(Frame f) {
		if(this.current == null) {
			this.current = f;
		} else if(this.next == null){
			nextFrameBuffer fb = new nextFrameBuffer();
			fb.current = f;
			this.next = fb;			
		} else {
			this.next.addFrameToQueue(f);
		}
	}
}