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所以我想在java中製作一個遊戲，它將顯示一個圖像網格作爲背景，現在它只是草地，偶爾有一塊岩石作爲我的圖像，當它工作時，我獲得32×32像預期的網格的大型顯示，但大約三分之二的時間，我的面板上沒有任何東西出現！Java Jpanel只出現了一半的時間
爲了解決問題，我已經消除了很多功能，並且當我運行代碼時，即使沒有每秒重繪數次，它仍然只會有時工作。
主要類
import javax.swing.JFrame;
public class Main {
public static void main(String[] args) {
//Creating a new frame for the whole game and everything
JFrame frame = new JFrame("Lawlz this is my game");
frame.setSize(800,800);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
frame.setResizable(false);
//adding the game panel to the main frame
frame.add(new GameFrame());
}
}
遊戲框架類（其中潘內爾製成），這是幾乎所有註釋掉的代碼。即使是動畫和玩家類，但它仍然不會顯示大約一半的時間。
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Random;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
public class GameFrame extends JPanel {//implements ActionListener {
Timer mainTimer;
Player player;
Random rand = new Random();
Grid GameGrid = new Grid(25, 25);
int enemyCount = 5;
//Constructer!
public GameFrame()
{
setFocusable(true);
//player = new Player(100,100);
}
//Does all of the drawing for the game
public void paint(Graphics g)
{
//Sends to the JPanel class (super class)
super.paint(g);
//gets a graphics 2d object
Graphics2D g2d = (Graphics2D)g;
GameGrid.draw(g2d);
}
}
GameGrid類，基本上擁有大量的「網格空間」對象，每一個基本上只是一個圖像。它還負責，在這一點上，打印出身邊的一切畫成平局（）方法
import java.awt.Graphics2D;
import java.util.ArrayList;
public class Grid {
ArrayList<GridSpace> grid = new ArrayList<GridSpace>();
int width;
int height;
public Grid(int w, int h)
{
width = w;
height = h;
//Temporary for creating the x and y values by using the size of the images
int gw = new GridSpace(0,0).getGridImg().getWidth(null);
int gh = new GridSpace(0,0).getGridImg().getHeight(null);
for(int i = 0; i < h; i++)
{
for(int n = 0; n < w; n++)
{
grid.add(new GridSpace(n*gw,i*gh)); //GridSpace(n*ImageWidth, i*ImageHeight)
}
}
}
public void draw(Graphics2D g2d)
{
for(int i = 0; i < width; i++)
{
for(int n = 0; n < height; n++)
{
GridSpace tempSpace = GetGridSpaceByID(GetCoordinates(n,i)); //gets the GridSpace object for this corrdinate
g2d.drawImage(tempSpace.getGridImg(),tempSpace.x,tempSpace.y,null);
}
}
}
public void test(Graphics2D g2d)
{
GridSpace tempSpace = GetGridSpaceByID(GetCoordinates(0,0));
g2d.drawImage(tempSpace.getGridImg(),tempSpace.x,tempSpace.y,null);
}
public GridSpace GetGridSpaceByID(int n)
{
return grid.get(n);
}
public int GetCoordinates(int x, int y)
{
return x + y * width;
}
}
最後，GridSpace對象，它基本上只是存儲的圖像
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.util.Random;
import javax.swing.ImageIcon;
public class GridSpace {
Random r = new Random();
ImageIcon ic;
int x = 0;
int y = 0;
public GridSpace(int x,int y)
{
this.x = x;
this.y = y;
//Stores an image for this grid space
//ic = new ImageIcon("C:\\Users\\Ben\\Desktop\\pic1.png");
if(r.nextInt(10) < 9)
{
ic = new ImageIcon("C:\\Users\\Ben\\Desktop\\Video Game\\grass1.jpg");
}
else
{
ic = new ImageIcon("C:\\Users\\Ben\\Desktop\\Video Game\\grass2.jpg");
}
}
public Image getGridImg()
{
//Image image = ic.getImage();
return ic.getImage();
}
}