Greedy_Snake.zip

import java.awt.*; import java.awt.event.*; import java.util.LinkedList; public class Greedy_Snake_Canvas extends Canvas { private Snake snake; private Food food; private javax.swing.Timer timer; private boolean is_running; public Greedy_Snake_Canvas() { is_running = false; this.setBackground(new Color(0, 64, 64)); snake = new Snake(Color.RED, 0); food = Food.make_new_food(snake.body); this.addKeyListener(new KeyAdapter() { public void keyPressed(KeyEvent e) { if (!is_running) { return; } switch (e.getKeyCode()) { case KeyEvent.VK_RIGHT: if (snake.getMove_direction() != 2) { int ret = snake.move(0, food); if (ret == 1) { food = Food.make_new_food(snake.body); } else if (ret == 2) { end_game(); } } repaint(); break; case KeyEvent.VK_UP: if (snake.getMove_direction() != 3) { int ret = snake.move(1, food); if (ret == 1) { food = Food.make_new_food(snake.body); } else if (ret == 2) { end_game(); } } repaint(); break; case KeyEvent.VK_LEFT: if (snake.getMove_direction() != 0) { int ret = snake.move(2, food); if (ret == 1) { food = Food.make_new_food(snake.body); } else if (ret == 2) { end_game(); } } repaint(); break; case KeyEvent.VK_DOWN: if (snake.getMove_direction() != 1) { int ret = snake.move(3, food); if (ret == 1) { food = Food.make_new_food(snake.body); } else if (ret == 2) { end_game(); } } repaint(); break; } } }); timer = new javax.swing.Timer(200, new ActionListener() { public void actionPerformed(ActionEvent e) { int ret = snake.move(snake.getMove_direction(), food); if (ret == 1) { food = Food.make_new_food(snake.body); } else if (ret == 2) { end_game(); } repaint(); } }); } public void start_game() { snake = new Snake(Color.RED, 0); food = Food.make_new_food(snake.body); timer.start(); is_running = true; this.requestFocus(); } public void end_game() { is_running = false; timer.stop(); } public void paint(Graphics g) { snake.paint(g); food.paint(g); } }