Java图形界面基础案例-怎么画乌龟
对于上一次的乌龟的设计不知道给位完成的怎么样，没有写出来也没有关系。下面我来展示一下设计的乌龟和代码
import java.awt.*;
public class Turtle{
{
public static void main(String[] args)
{
Frame w = new Frame() ;
w.setSize(1366, 768) ;
w.setBackground(Color.LIGHT_GRAY);
MyPanel mp = new MyPanel();
w.add(mp);
w.show();
}
class MyPanel extends Panel
{
int x = 100, y = 400 ,x1 = 400 ,x2 = 700, x3 = 1000;
int j1 = 400 , k1 = 100 ;
int j2 = 400 , k2 = 100 ;
int j3 = 400 , k3 = 100 ;
int j4 = 400 , k4 = 100 ;
public void paint(Graphics g)
{
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(x, y, 70, 100);
g.setColor(Color.BLACK);
g.fillOval(x+10, y+30, 10, 10);
g.fillOval(x+50, y+30, 10, 10);
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(x, y+290, 60, 80);
g.setColor(Color.LIGHT_GRAY);
g.fillOval(x+20, y+300, 60, 80);
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(k1-85, j1+70, 70, 70); 100
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(k2+85, j2+70, 70, 70);
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(k3-80, j3+235, 70, 70);
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(k4+80, j4+235, 70, 70);
g.setColor(Color.GREEN);
g.fillOval(x-66, y+69, 200, 230);
g.setColor(Color.black);
g.drawOval(x-65, y+70, 200, 230);
g.setColor(Color.black);//πÍ∏«
g.drawLine(x+5, y+130, x+75, y+130);
g.drawLine(x-10, y+82, x+5, y+130);
g.drawLine(x+75, y+130, x+100, y+95);
g.drawLine(x-67,y+200,x+135,y+200);
g.drawLine(x+5,y+250,x+75,y+250);
g.drawLine(x+5,y+250,x-20,y+278);
g.drawLine(x+100,y+275,x+75,y+250);
g.drawLine(x+40, y+70, x+40, y+300);
}
}看一下在Eclipse里运行的结果
由于代码的实现很简单，所以博主没有写上备注，有不明白的地方可以来问博主。基本就是在paint这个方法里加一些图形和上色。
博主第一次做这个乌龟的时候觉得这个静止的乌龟不好玩，自学了监听方面的只是对这个代码进行立刻修改，楼主把代码放上，感兴趣的可以先提前去了解监听方面的知识
import java.awt.*;
import java.awt.event.*;
public class TurtleMove
{
public static void main(String[] args)
{
//设置窗体
Frame w = new Frame() ;
w.setSize(1366, 768) ;
w.setBackground(Color.LIGHT_GRAY);
//添加画布
MyWuGuiPa mp = new MyWuGuiPa();
w.add(mp);
//注册键盘事件
w.addKeyListener(mp) ;
mp.addKeyListener(mp) ;
//注册鼠标事件
w.addMouseListener(mp) ;
mp.addMouseListener(mp) ;
//显示
w.show() ;
}
}
class TurtleMove extends Panel implements KeyListener,MouseListener
{
//定义乌龟起始位置
int x = 100, y = 400 ,x1 = 400 ,x2 = 700, x3 = 1000;
//定义乌龟四只脚的变量 j是脚的y轴变量用来控制上下移动 k是脚的x轴的变量用来控制左右移动
int j1 = 400 , k1 = 100 ;
int j2 = 400 , k2 = 100 ;
int j3 = 400 , k3 = 100 ;
int j4 = 400 , k4 = 100 ;
//定义乌龟行动规则
int f = 0 ;
public void paint(Graphics g)
{
//乌龟的头
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(x, y, 70, 100);
g.setColor(Color.BLACK);
g.fillOval(x+10, y+30, 10, 10);
g.fillOval(x+50, y+30, 10, 10);
//龟尾巴
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(x, y+290, 60, 80);
g.setColor(Color.LIGHT_GRAY);
g.fillOval(x+20, y+300, 60, 80);
//乌龟左上腿
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(k1-85, j1+70, 70, 70);
//乌龟右上腿 100
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(k2+85, j2+70, 70, 70);
//乌龟左下腿 100
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(k3-80, j3+235, 70, 70);
//乌龟右下腿
g.setColor(Color.getHSBColor(169, 40, 3));
g.fillOval(k4+80, j4+235, 70, 70);
//龟盖
g.setColor(Color.GREEN);
g.fillOval(x-66, y+69, 200, 230);
g.setColor(Color.black);
g.drawOval(x-65, y+70, 200, 230);
g.setColor(Color.black);//龟盖
//龟纹
g.drawLine(x+5, y+130, x+75, y+130);
g.drawLine(x-10, y+82, x+5, y+130);
g.drawLine(x+75, y+130, x+100, y+95);
g.drawLine(x-67,y+200,x+135,y+200);
g.drawLine(x+5,y+250,x+75,y+250);
g.drawLine(x+5,y+250,x-20,y+278);
g.drawLine(x+100,y+275,x+75,y+250);
g.drawLine(x+40, y+70, x+40, y+300);
}
@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void keyPressed(KeyEvent e)
{
if(e.getKeyCode() == KeyEvent.VK_UP&&j1>0)
{
//定义乌龟向上移动 f==0时候 左上脚和右下脚向前东
// f==1时 右上脚和左下脚向前动
y = y - 10 ;
if(f == 0)
{
j1 = j1 - 20 ;
j4 = j4 - 20 ;
}
if(f == 1)
{
j2 = j2 -20 ;
j3 = j3 -20 ;
}
if(j1 >= j2)
{
f = 0 ;
}
if(j1 < j2)
{
f = 1 ;
}
}
if(e.getKeyCode() == KeyEvent.VK_DOWN&&j4<400)
{
//定义乌龟向下移动 移动规则与向上移动一样
y = y + 10 ;
if(f == 0)
{
j1 = j1 + 20 ;
j4 = j4 + 20 ;
}
if(f == 1)
{
j2 = j2 + 20 ;
j3 = j3 + 20 ;
}
if(j1 <= j2)
{
f = 0 ;
}
if(j1 > j2)
{
f = 1 ;
}
}
if(e.getKeyCode() == KeyEvent.VK_LEFT&&k1>80)
{
//定义乌龟 向左移动 f==0时候 左上和左下脚向左移动
//f==1时候 右上和右下向左移动
x = x - 10 ;
if(f == 0)
{
k1 = k1 - 20 ;
k3 = k3 - 20 ;
}
if(f == 1)
{
k2 = k2 - 20 ;
k4 = k4 - 20 ;
}
if(k1 >= k2)
{
f = 0 ;
}
if(k1 < k2)
{
f = 1 ;
}
}
if(e.getKeyCode() == KeyEvent.VK_RIGHT&&k2<1200)
{
//定义乌龟向右移动 移动规则和向左一样
x = x + 10 ;
if(f == 0)
{
k2 = k2 + 20 ;
k4 = k4 + 20 ;
}
if(f == 1)
{
k1 = k1 + 20 ;
k3 = k3 + 20 ;
}
if(k2 <= k1)
{
f = 0 ;
}
if(k2 > k1)
{
f = 1 ;
}
}
repaint() ;
}
@Override
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e)
{
//定义鼠标点到哪里 乌龟就出现在哪里
x = e.getX() ;
y = e.getY() ;
j1 = e.getY() ;
j2 = e.getY() ;
j3 = e.getY() ;
j4 = e.getY() ;
k1 = e.getX() ;
k2 = e.getX() ;
k3 = e.getX() ;
k4 = e.getX() ;
repaint() ;
}
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
}博主想来想去最后还是自己把注释一行行的写上去了，各位可以拿去参考参考