09/11/21 17:20:07
すみません、コンパイルできるんですが何も表示されません、助けてください
見にくいかと思いますが、お願いします
//<applet code="SnakeProg2.class" width="300" height="300"></applet>
import javax.swing.*; import java.awt.*; import java.awt.event.*;
public class SnakeProg2 extends JApplet implements KeyListener { int actiontype = 0, count = 0; int x[] = new int[99]; int y[] = new int[99];
public void init()
this.addKeyListener(this); this.setFocusable(true);
}
public void paint(Graphics g) {
super.paint(g);
x[count] = 0; y[count] = 0;
for (count = 1; count <= x.length; count++) {
switch (actiontype) { case 0: count--; break; case 1: x[count] = x[count-1] + 10; g.drawPolyline(x, y, count); break;
case 2: y[count] = y[count-1] + 10; g.drawPolyline(x, y, count); break;
case 3: x[count] = x[count-1] - 10; g.drawPolyline(x, y, count); break;
case 4: y[count] = y[count-1] - 10; g.drawPolyline(x, y, count); break; } } }
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
if(keyCode == KeyEvent.VK_RIGHT) {
if(x[count] == 300 || count == 100) {
actiontype = 0; } else {actiontype = 1;}
} else if(keyCode == KeyEvent.VK_DOWN) { if(y[count] == 300 || count == 100) { actiontype = 0; } else { actiontype = 2; }
} else if(keyCode == KeyEvent.VK_LEFT) { if(x[count] == 0 || count == 100) { actiontype = 0; } else { actiontype = 3; }
else if(keyCode == KeyEvent.VK_UP) { if(y[count] == 0 || count == 100) { actiontype = 0; } else { actiontype = 4; } } repaint(); }
public void keyTyped(KeyEvent e) {
public void keyReleased(KeyEvent e) { }}