/*java第二次實驗

* 移動小方塊

*/

import javax.swing.*;

import java.awt.event.*;

import java.awt.geom.*;

import java.awt.*;

public class Game {

public static void main(String[] args) {

GameFrame MyFrame = new GameFrame();

MyFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

MyFrame.setVisible(true);

}

}

class GameFrame extends JFrame {

private int flag = 0;

private double xPos[] = { 0, 0, 270, 0, 270 };

private double yPos[] = { 0, 0, 0, 270, 270 };

private double arriver[] = { 0, 0, 0, 0, 0 };

private Rectangle2D rect[] = new Rectangle2D[5];

public GameFrame() {

GamePanel MyPanel = new GamePanel();

addKeyListener(new GameKeyListener());// 增加監聽器

this.add(MyPanel);

setSize(308, 334);

}

class GamePanel extends JPanel {

public GamePanel() {

}

public void paint(Graphics g) {

super.paint(g);

Graphics2D g2 = (Graphics2D) g;

for (int i = 1; i <= 4; i++) {

rect[i] = new Rectangle2D.Double(xPos[i], yPos[i], 30f, 30f);

}

ColorMovingPaint(g2);

MiddlePaint(g2);

isWin(g2);

repaint();

}

public void isWin(Graphics2D g2) {

boolean isWin = true;

for (int i = 1; i <= 4; i++) {

if (arriver[i] == 0)

isWin = false;

}

if (isWin) {

g2.drawString("恭喜你，游戲結束!", 100, 100);

}

}

public void MiddlePaint(Graphics g2) {

g2.setColor(Color.RED);

g2.drawRect(120, 120, 30, 30);

g2.drawRect(120, 150, 30, 30);

g2.drawRect(150, 120, 30, 30);

g2.drawRect(150, 150, 30, 30);

}

public void ColorMovingPaint(Graphics2D g2) {

for (int i = 1; i <= 4; i++) {

if (flag != i) {

g2.setColor(Color.BLUE);

g2.fill(rect[i]);

} else {

g2.setColor(Color.RED);

g2.fill(rect[i]);

}

}

}

}

class GameKeyListener implements KeyListener {

public void keyPressed(KeyEvent event) {

int keyCode = event.getKeyCode();

if (keyCode == KeyEvent.VK_1) {

flag = 1;

}

if (keyCode == KeyEvent.VK_2) {

flag = 2;

}

if (keyCode == KeyEvent.VK_3) {

flag = 3;

}

if (keyCode == KeyEvent.VK_4) {

flag = 4;

}

if (keyCode == KeyEvent.VK_UP) {

move(0, -30, flag);

}

if (keyCode == KeyEvent.VK_DOWN) {

move(0, 30, flag);

}

if (keyCode == KeyEvent.VK_LEFT) {

move(-30, 0, flag);

}

if (keyCode == KeyEvent.VK_RIGHT) {

move(30, 0, flag);

}

}

public void keyReleased(KeyEvent arg0) {

}

public void keyTyped(KeyEvent arg0) {

}

}

void move(int x, int y, int flag) {

double xTemp = xPos[flag] + x;

double yTemp = yPos[flag] + y;

boolean canMove = true;

for (int i = 1; i <= 4; i++) {

if (i == flag)

continue;

if (xTemp == xPos[i] && yTemp == yPos[i]||xTemp>270||xTemp<0||yTemp<0||yTemp>270) {

canMove = false;

break;

}

}

if (canMove) {

xPos[flag] += x;

yPos[flag] += y;

}

if (xPos[flag] >= 120 && xPos[flag] <= 150 && yPos[flag] <= 150

&& yPos[flag] >= 120)

arriver[flag] = 1;

else

arriver[flag] = 0;

}

}

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