[英]Add multiple swing/awt shapes to frame
Ive创建了骰子游戏,这是一个基于骰子的游戏。 我已经创建了游戏逻辑,但正在尝试实现GUI。 我已经为两个骰子创建了我的骰子和骰子组件。 如果我一次将我的骰子添加到框架中,它们都可以工作,但是一旦我尝试同时将它们都添加到框架中并运行我的掷骰子游戏,框架就为空。
CrapsGame代码:
package crapsgame;
import java.awt.FlowLayout;
import javax.swing.*;
public class CrapsGameTester
{
/**
* @param args the command line arguments
*/
public static void main(String[] args)
{
JFrame frame = new JFrame("Craps-Game");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
final int FRAME_WIDTH = 400;
final int FRAME_HEIGHT = 600;
frame.setSize(FRAME_HEIGHT, FRAME_WIDTH);
CrapsGame game = new CrapsGame();
JPanel panel = new JPanel(new FlowLayout());
frame.add(panel);
Dice1Component dice1 = new Dice1Component(6);
Dice2Component dice2 = new Dice2Component(6);
panel.add(dice1);
panel.add(dice2);
String message = game.doFirstRoll();
System.out.println(message);
while(!game.isOver())
{
message = game.rollAgain();
System.out.println(message);
}
if(game.isWon())
System.out.println("You win, big man!");
else
System.out.println("Loser ...");
frame.setVisible(true);
}
}
Dice1代码:
package crapsgame;
import java.awt.*;
public class Dice1
{
int sides;
int xCoord = 150;
int yCoord = 130;
public Dice1(int s)
{
sides = s;
}
/**
*
* @param g2 Graphics2D object used by draw method
*/
public void draw(Graphics2D g2)
{
g2.setColor(Color.BLACK);
g2.fillRect(xCoord, yCoord, 100, 100);
g2.setColor(Color.WHITE);
switch (sides)
{
case 1:
g2.fillOval(xCoord + 40, yCoord + 40, 20, 20);
break;
case 2:
g2.fillOval(xCoord + 15, yCoord + 15, 20, 20);
g2.fillOval(xCoord + 65, yCoord + 65, 20, 20);
break;
case 3:
g2.fillOval(xCoord + 15, yCoord + 15, 20, 20);
g2.fillOval(xCoord + 40, yCoord + 40, 20, 20);
g2.fillOval(xCoord + 65, yCoord + 65, 20, 20);
break;
case 4:
g2.fillOval(xCoord + 15, yCoord + 15, 20, 20);
g2.fillOval(xCoord + 15, yCoord + 65, 20, 20);
g2.fillOval(xCoord + 65, yCoord + 15, 20, 20);
g2.fillOval(xCoord + 65, yCoord + 65, 20, 20);
break;
case 5:
g2.fillOval(xCoord + 15, yCoord + 15, 20, 20);
g2.fillOval(xCoord + 15, yCoord + 65, 20, 20);
g2.fillOval(xCoord + 65, yCoord + 15, 20, 20);
g2.fillOval(xCoord + 65, yCoord + 65, 20, 20);
g2.fillOval(xCoord + 40, yCoord + 40, 20, 20);
break;
case 6:
g2.fillOval(xCoord + 20, yCoord + 20, 20, 20);
g2.fillOval(xCoord + 20, yCoord + 45, 20, 20);
g2.fillOval(xCoord + 20, yCoord + 70, 20, 20);
g2.fillOval(xCoord + 60, yCoord + 20, 20, 20);
g2.fillOval(xCoord + 60, yCoord + 45, 20, 20);
g2.fillOval(xCoord + 60, yCoord + 70, 20, 20);
break;
}
}
}
Dice1组件代码:
package crapsgame;
import java.awt.*;
import javax.swing.*;
public class Dice1Component extends JComponent
{
private int sides;
public Dice1Component(int s)
{
sides = s;
}
public void setSide(int s)
{
sides = s;
}
@Override
public void paintComponent(Graphics g)
{
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
Dice1 dice1 = new Dice1(sides);
dice1.draw(g2);
}
}
我读到要在一个框架中添加多个组件,您必须使用JPanel,但这似乎对我也不起作用。
除了注释中提到的问题外,还有几个问题,但是这些应该可以使代码正常工作:
您应该在Dice1Component
覆盖首选大小,以便布局管理器可以为其保留正确的空间。
@Override public Dimension getPreferredSize() { return new Dimension(100, 100); }
xCoord
和yCoord
从Dice1
。 使用的坐标是相对于零部件的,因此较大的偏移量将尝试在零部件区域之外绘制
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