import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;


public class Controller extends KeyAdapter {
	private Snake snake;
	
	Controller(Snake snake)
	{
		if(snake!=null)
		{
			this.snake = snake;
		}
	}
	
	public void keyPressed(KeyEvent e) 
	{
		int key = e.getKeyCode();
		
		if(key == KeyEvent.VK_UP)//按下“上”
		{
			snake.changeDirect(Snake.UP);
		}
		else if(key == KeyEvent.VK_DOWN)//按下“下”
		{
			snake.changeDirect(Snake.DOWN);
		}
		else if(key == KeyEvent.VK_RIGHT)//按下“右”
		{
			snake.changeDirect(Snake.RIGHT);
		}
		else if(key == KeyEvent.VK_LEFT)//按下“左”
		{
			snake.changeDirect(Snake.LEFT);
		}
	}
	
}