我正在尝试在这里制作我的第一个小型 Java 游戏，并且我想让它基于平铺。我正在尝试在 JFrame 上平铺块图像，并整理了一些代码以适应我的情况。不幸的是，它并没有真正起作用，因为它不会绘制任何我想要的测试精灵，这是我需要帮助的地方。我将发布我的代码：
frame.java：我想说这一切都是正确的......
import javax.swing.JFrame;
public class frame extends JFrame
{
panel ng;
public frame()
{
ng = new panel();
setSize(500,500);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setResizable(false);
add(ng);
}
public static void main(String [] args)
{
frame n = new frame();
}
}
面板.java：
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import javax.swing.JPanel;
public class panel extends JPanel implements Runnable
{
private Thread game;
private boolean running = false;
private Image dbImage;
private Graphics dbGraphics;
static final int Width = 50;
static final int Height = 50;
static final Dimension dim = new Dimension(Width,Height);
map nm;
public panel()
{
nm = new map("tester.txt");
setPreferredSize(new Dimension(75,75));
setFocusable(true);
requestFocus();
}
public void run()
{
while (running)
{
update();
render();
paintScreen();
}
}
private void update()
{
if (game != null && running == true)
{
}
}
private void render()
{
if (dbImage == null)
{
dbImage = createImage(Width, Height);
dbGraphics = dbImage.getGraphics();
}
dbGraphics.setColor(Color.WHITE);
dbGraphics.fillRect(0,0,Width,Height);
draw(dbGraphics);
}
private void paintScreen()
{
Graphics g;
try
{
g=this.getGraphics();
if(dbImage != null && g != null)
{
g.drawImage(dbImage,0,0,null);
}
}
catch(Exception e)
{
}
}
public void draw(Graphics g)
{
nm.draw(g);
}
private void startGame()
{
if(game == null || running == false)
{
game = new Thread(this);
game.start();
}
}
public void addNotify()
{
super.addNotify();
startGame();
}
public void stopGame()
{
if (running == true)
{
running = false;
}
}
}
map.java：这是我尝试分配精灵的地方......不确定我做错了什么。顺便说一句，我在地图构造函数中使用的测试文本文件只是一个具有宽度、高度以及一堆随机 0 和 1 的文件。0 和 1 用于显示某些块的位置。
import java.awt.Graphics;
import java.awt.Image;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
public class map
{
private int[][] tileMap;
private int height;
private int width;
private Image BLOCK;
public map(String mapFile)
{
BLOCK = new ImageIcon("path to sprite").getImage();
int[] tileNums;
try
{
BufferedReader br = new BufferedReader(new FileReader(mapFile));
width=Integer.parseInt(br.readLine());
height=Integer.parseInt(br.readLine());
tileNums= new int[width];
tileMap=new int[width][height];
for(int row = 0; row < height; row++)
{
String line=br.readLine();
//what I'm trying to do here is make each int in grid into array by converting char to int
for(int i=0; i<=line.length();i++)
{
tileNums[i]=(line.charAt(i)-48);
}
for(int col = 0; col<width; col++)
{
tileMap[row][col]=tileNums[col];
}
}
}
catch(Exception e)
{
}
}
public void draw(Graphics g)
{
int ix=0;
int iy=0;
for(int row=0;row<height;row++)
{
for(int col=0;col<height;col++)
{
if(tileMap[row][col]==0)
{
g.drawImage(BLOCK, ix, iy, null);
ix=ix+16;
}
}
}
}
}