斯坦福大学 CS106A Breakout 代码，cs106abreakout,package grap

斯坦福大学 CS106A Breakout 代码，cs106abreakout,package grap

package graphicShit;import acm.graphics.*;import acm.program.*;import acm.util.*;import java.applet.*; import java.awt.*; import java.awt.event.*;public class Breakout extends GraphicsProgram{/** Width and height of application window in pixels */  public static final int APPLICATION_WIDTH = 400;  public static final int APPLICATION_HEIGHT = 600; /** Dimensions of game board (usually the same) */  private static final int WIDTH = APPLICATION_WIDTH;  private static final int HEIGHT = APPLICATION_HEIGHT; /** Dimensions of the paddle */  private static final int PADDLE_WIDTH = 60;  private static final int PADDLE_HEIGHT = 10; /** Offset of the paddle up from the bottom */  private static final int PADDLE_Y_OFFSET = 30; /** Number of bricks per row */  private static final int NBRICKS_PER_ROW = 10; /** Number of rows of bricks */  private static final int NBRICK_ROWS = 10; /** Separation between bricks */  private static final int BRICK_SEP = 4; /** Width of a brick */  private static final int BRICK_WIDTH =    (WIDTH - (NBRICKS_PER_ROW - 1) * BRICK_SEP) / NBRICKS_PER_ROW; /** Height of a brick */  private static final int BRICK_HEIGHT = 8; /** Radius of the ball in pixels */  private static final int BALL_RADIUS = 10; /** Offset of the top brick row from the top */  private static final int BRICK_Y_OFFSET = 70; /** Number of turns */  private static final int NTURNS = 3;  /** Animation delay or pause time between ball moves */  private static final int DELAY = 50;    public void run() {         numberOfTurns = NTURNS;        while(numberOfTurns > 0) {        setup();        play();        removeAll();        numberOfTurns --;        }        GLabel gameOver = new GLabel("GAME OVER");        gameOver.setLocation((WIDTH - gameOver.getWidth()) / 2, HEIGHT / 2);        remove(youLose);        remove(youWin);        add(gameOver); }    private void setup() {        addMouseListeners();        createBricks();        createPaddle();    }    private void createBricks() {        double xColumnOne = (WIDTH - ((NBRICKS_PER_ROW - 1) * BRICK_SEP + (NBRICKS_PER_ROW * BRICK_WIDTH)));        double yRow = BRICK_Y_OFFSET;        for (int i = 0; i < NBRICK_ROWS; i++) {                 for (int j = 0; j < NBRICKS_PER_ROW; j++) {                GRect brick = new GRect (xColumnOne, yRow, BRICK_WIDTH, BRICK_HEIGHT);                /* Sets row colors to the following standards:  "The color of the bricks remain constant for two rows and run in the following     rainbow-like sequence: RED, ORANGE, YELLOW, GREEN, CYAN" */                if (i == 0 || i == 1) {                     brick.setColor(Color.RED);                } else if (i == 2 || i == 3) {                    brick.setColor(Color.ORANGE);                } else if (i == 4 || i == 5) {                    brick.setColor(Color.YELLOW);                } else if (i == 6 || i == 7) {                    brick.setColor(Color.GREEN);                } else if (i == 8 || i == 9) {                    brick.setColor(Color.CYAN);                }                brick.setFilled(true);                 add(brick);                xColumnOne += (BRICK_WIDTH + BRICK_SEP);            }            xColumnOne = (WIDTH - ((NBRICKS_PER_ROW - 1) * BRICK_SEP + (NBRICKS_PER_ROW * BRICK_WIDTH)));            yRow += (BRICK_HEIGHT + BRICK_SEP);        }    }    /* Creates paddle and sets starting location to center of canvas. */    private void createPaddle() {        paddle = new GRect ((WIDTH - PADDLE_WIDTH)/2, HEIGHT - PADDLE_Y_OFFSET, PADDLE_WIDTH, PADDLE_HEIGHT);        paddle.setFilled(true);        add(paddle);    }    /* Sets paddle to move with mouse cursor, stopping before it exits the canvas. */    public void mouseMoved(MouseEvent e) {        double paddleX = e.getX();        double paddleY = HEIGHT - PADDLE_Y_OFFSET;        paddle.setLocation(paddleX, paddleY);        if ((paddleX + PADDLE_WIDTH) > WIDTH) {            paddle.setLocation((WIDTH - PADDLE_WIDTH), paddleY);        }    }    private void play() {        createBall();        waitForClick();        /* Y-velocity of ball */        vy = 5.0;        /* X-velocity of ball */        vx = rgen.nextDouble(1.0, 5.0);         if (rgen.nextBoolean(0.5)) vx = -vx;        int bricksRemaining = (NBRICK_ROWS * NBRICKS_PER_ROW);        youWin = new GLabel("You Win!");        youWin.setLocation((WIDTH - youWin.getWidth()) / 2, HEIGHT / 2);        youLose = new GLabel("You Lose :(");        youLose.setLocation((WIDTH - youLose.getWidth()) / 2, HEIGHT / 2);        while (true) {            moveBall();            checkForWallCollision();            GObject collider = getCollidingObject();            /*Increases velocity in both directions by 0.15 each time the ball collides with the paddle. */            if (collider != null && collider == paddle) {                vy = vy + 0.15;                vx = vx + 0.15;                /* If the ball hits the first fifth of the paddle while traveling in a positive x-direction,                  * or the last fifth of the paddle while traveling in a negative x-direction, x-velocity is doubled.                  * If the inverse of either of these is true, the ball will bounce in the opposite x-direction as it was received,                 * and x-velocity is halved.                 */                if (vx > 0 && ball.getX() < (paddle.getX() + (PADDLE_WIDTH * 0.2))) {                    vx = 0.5 * vx;                    vx = -vx;                    vy = -vy;                } else if (vx < 0 && ball.getX() < (paddle.getX() + (PADDLE_WIDTH * 0.2))) {                    vx = 2 * vx;                    vy = -vy;                } else if (vx < 0 && ball.getX() > (paddle.getX() + (PADDLE_WIDTH * 0.8))) {                    vx = 0.5 * vx;                    vx = -vx;                    vy = -vy;                                   } else if (vx > 0 && ball.getX() > (paddle.getX() + (PADDLE_WIDTH * 0.8))) {                    vx = 2 * vx;                    vy = -vy;                } else vy = -vy;            }            if (collider != null && collider != paddle) {                remove(collider);                vy = -vy;                bricksRemaining --;            }            if (ball.getY() + 2 * BALL_RADIUS > HEIGHT) {                add(youLose);                remove(ball);                break;            }            if (bricksRemaining == 0) {                add(youWin);                remove(ball);                break;            }            pause(DELAY);        }        waitForClick();        remove(youLose);        remove(youWin);    }    private void createBall(){        ball = new GOval ((WIDTH - (2 * BALL_RADIUS)) / 2, (HEIGHT - (2 * BALL_RADIUS)) / 2, 2 * BALL_RADIUS, 2 * BALL_RADIUS);        ball.setFilled(true);        add(ball);    }    private void moveBall() {        ball.move(vx,vy);    }    private void checkForWallCollision() {        if (ball.getX() + 2 * BALL_RADIUS > WIDTH || ball.getX() < 0) {            vx = -vx;        }        if (ball.getY() < 0) {            vy = -vy;        }    }    /* Checks for ball collisions with objects other than the walls, using the four points of the surrounding rectangle as "check" points. */    private GObject getCollidingObject() {        if (getElementAt(ball.getX(), ball.getY()) != null) {            collidingObject = getElementAt(ball.getX(), ball.getY());        } else if (getElementAt(ball.getX() + (2 * BALL_RADIUS), ball.getY()) != null) {            collidingObject = getElementAt(ball.getX() + (2 * BALL_RADIUS), ball.getY());        } else if (getElementAt(ball.getX(), ball.getY() + (2 * BALL_RADIUS)) != null) {            collidingObject = getElementAt(ball.getX(), ball.getY() + (2 * BALL_RADIUS));        } else if (getElementAt(ball.getX() + (2 * BALL_RADIUS), ball.getY() + (2 * BALL_RADIUS)) != null) {            collidingObject = getElementAt(ball.getX() + (2 * BALL_RADIUS), ball.getY() + (2 * BALL_RADIUS));        } else {            collidingObject = null;        }        return collidingObject;    }    private GLabel youWin;    private GLabel youLose;    private int numberOfTurns;    private GObject collidingObject;    private GRect paddle;    private GOval ball;    private double vx, vy;    private RandomGenerator rgen = RandomGenerator.getInstance();}