uni_informatik_projekt/src/break_out/model/Level.java

package break_out.model;


import break_out.Constants;

/**
 * This class contains information about the running game
 *
 * @author dmlux
 * @author I. Schumacher; modified by Gruppe 175 (Moritz Henseleit, Ruben Meyer)
 */
public class Level extends Thread implements ILevel {

	/**
	 * The game to which the level belongs
	 */
	private Game game;

	/**
	 * The number of the level
	 */
	private int levelnr;

	/**
	 * The score of the level
	 */
	private int score;

	/**
	 * The ball of the level
	 */
	private Ball ball;

	/**
	 * Flag that shows if the ball was started
	 */
	private boolean ballWasStarted = true;

	/**
	 * The paddles of the level
	 */
	private Paddle paddleTop, paddleBottom;

	/**
	 * The constructor creates a new level object and needs the current game object,
	 * the number of the level to be created and the current score
	 *
	 * @param game    The game object
	 * @param levelnr The number of the new level object
	 * @param score   The score
	 */
	public Level(Game game, int levelnr, int score) {
		this.game = game;
		this.levelnr = levelnr;
		this.score = score;
		this.ball = new Ball();

		// calc paddle positions
		Position posPaddleTop = new Position((Constants.SCREEN_WIDTH - Constants.PADDLE_WIDTH) / 2.0, 0);
		Position posPaddleBottom = new Position((Constants.SCREEN_WIDTH - Constants.PADDLE_WIDTH) / 2.0, Constants.SCREEN_HEIGHT - Constants.PADDLE_HEIGHT);

		// set paddles
		this.paddleTop = new Paddle(posPaddleTop);
		this.paddleBottom = new Paddle(posPaddleBottom);

		loadLevelData(levelnr);
	}

	/**
	 * The getter for the ball object
	 *
	 * @return ball The ball of the level
	 */
	public Ball getBall() {
		return this.ball;
	}

	/**
	 * Sets ballWasStarted to true, the ball is moving
	 */
	public void startBall() {
		ballWasStarted = true;
	}

	/**
	 * Sets ballWasStarted to false, the ball is stopped
	 */
	public void stopBall() {
		ballWasStarted = false;
	}

	/**
	 * Returns if the ball is moving or stopped
	 *
	 * @return ballWasStarted True: the ball is moving; false: the ball is stopped
	 */
	public boolean ballWasStarted() {
		return ballWasStarted;
	}

	/**
	 * The method of the level thread
	 */
	public void run() {
		game.notifyObservers();

		// endless loop
		while (true) {
			// if ballWasStarted is true, the ball is moving
			if (ballWasStarted) {

				// Call here the balls method for updating his position on the playground
				this.ball.updatePosition();

				// Call here the balls method for reacting on the borders of the playground
				this.ball.reactOnBorder();

				// if ball hits paddle (top|bottom), reflect ball
				if(this.ball.hitsPaddle(paddleTop)) this.ball.reflectOnPaddle(paddleTop);
				if(this.ball.hitsPaddle(paddleBottom)) this.ball.reflectOnPaddle(paddleBottom);


				// Tells the observer to repaint the components on the playground
				game.notifyObservers();

			}
			// The thread pauses for a short time
			try {
				Thread.sleep(4);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * Loads the information for the level from a json-file located in the folder /res of the project
	 *
	 * @param levelnr The number X for the LevelX.json file
	 */
	private void loadLevelData(int levelnr) {

	}

	/**
	 * The getter for the top paddle object
	 *
	 * @return paddleTop The top paddle of the level
	 */
	public Paddle getPaddleTop() {
		return paddleTop;
	}

	/**
	 * The getter for the bottom paddle object
	 *
	 * @return paddleBottom The bottom paddle of the level
	 */
	public Paddle getPaddleBottom() {
		return paddleBottom;
	}

}