This topic was suggested by
@p2 and focusses on getting keypress events in java.
It also features some tile rendering code which I made previously.
It features a little walrii, who you can walk around a map.
Also pressing space will change the terrain.
Here is the code.... hopefully it will explain itself.... if not then just ask what you want explaining!
Many thanks
Here is the source code....... the first file contains all the keypress stuff, the second two files are the tile rendering stuff. Feel free to use both if you want
TileTestApp.java
package tiletest;
import javax.swing.JFrame;
import tiletest.TileArea;
import java.awt.event.KeyListener;
import java.awt.event.KeyEvent;
public class TileTestApp implements KeyListener
{
private int m_walriix = 280, m_walriiy = 180;
private boolean m_keyDown = false;
private boolean m_keyUp = false;
private boolean m_keyLeft = false;
private boolean m_keyRight = false;
private int m_bgTile = 0;
public void keyPressed(KeyEvent e)
{
if (e.getKeyCode() == KeyEvent.VK_SPACE) {
m_bgTile++;
if (m_bgTile > 7) {
m_bgTile = 0;
}
}
if (e.getKeyCode() == KeyEvent.VK_LEFT) m_keyLeft = true;
else if (e.getKeyCode() == KeyEvent.VK_RIGHT) m_keyRight = true;
else if (e.getKeyCode() == KeyEvent.VK_UP) m_keyUp = true;
else if (e.getKeyCode() == KeyEvent.VK_DOWN) m_keyDown = true;
}
public void keyReleased(KeyEvent e)
{
if (e.getKeyCode() == KeyEvent.VK_LEFT) m_keyLeft = false;
else if (e.getKeyCode() == KeyEvent.VK_RIGHT) m_keyRight = false;
else if (e.getKeyCode() == KeyEvent.VK_UP) m_keyUp = false;
else if (e.getKeyCode() == KeyEvent.VK_DOWN) m_keyDown = false;
}
public void keyTyped(KeyEvent e)
{
}
TileTestApp()
{
JFrame frame = new JFrame("kotu java demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// add TileArea to the JFrame here
TileArea tileArea = new TileArea(600, 408);
frame.add("Center", tileArea);
frame.pack();
frame.setVisible(true);
frame.addKeyListener(this);
// load tileset
TileSource tiles = new TileSource("all-3.png", 24);
//----
for (;;)
{
if (m_keyRight) m_walriix += 4;
if (m_keyLeft) m_walriix -= 4;
if (m_keyUp) m_walriiy -= 4;
if (m_keyDown) m_walriiy += 4;
for (int x = 0; x < 25; x++) {
for (int y = 0; y < 17; y++) {
tileArea.drawTile(tiles, m_bgTile, 3, tiles.getTileSize()*x, tiles.getTileSize()*y);
}
}
tileArea.drawTile(tiles, 2, 1, m_walriix, m_walriiy);
frame.repaint();
try { // wait 10ms to avoid any flicker
Thread.sleep(10);
} catch(InterruptedException ex) {
Thread.currentThread().interrupt();
}
}
}
public static void main(String[] args)
{
new TileTestApp();
}
}
TileArea.java
package tiletest;
import java.awt.*;
import java.awt.image.*;
public class TileArea extends Component
{
private static final long serialVersionUID = 1L;
private BufferedImage m_image;
private int m_width, m_height;
public TileArea(int width, int height)
{
m_width = width;
m_height = height;
m_image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
}
public Dimension getPreferredSize()
{
return new Dimension(m_width, m_height);
}
public void paint(Graphics g)
{
g.drawImage(m_image, 0, 0, null);
}
public void drawTile(TileSource tileSource, int tilex, int tiley, int x, int y)
{
Graphics2D g = m_image.createGraphics();
g.drawImage(tileSource.getTile(tilex, tiley), x, y, null);
}
}
TileSource.java
package tiletest;
import java.awt.*;
import java.awt.image.*;
import javax.imageio.*;
import java.io.*;
import javax.swing.*;
public class TileSource extends Component
{
private static final long serialVersionUID = 1L;
private BufferedImage m_tiles;
private int m_tileSize;
public TileSource(String filename, int tileSize)
{
m_tileSize = tileSize;
try {
m_tiles = ImageIO.read(new File(filename));
}
catch (IOException e) { // no need to do anything here
} // m_tiles will be null anyway
if (m_tiles == null) {
JOptionPane.showMessageDialog(null, "p2, no! could not load tileset.");
return;
}
}
public int getTileSize()
{
return m_tileSize;
}
public BufferedImage getTile(int tilex, int tiley)
{
if (m_tiles == null) {
return null;
}
return m_tiles.getSubimage(tilex*(m_tileSize+1)+1, tiley*(m_tileSize+1)+1, m_tileSize, m_tileSize);
}
}
You will also need to include this image in your project (from p2's game)
