516 lines
11 KiB
Java
516 lines
11 KiB
Java
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/**
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* AppleIIGo
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* The Java Apple II Emulator
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* (C) 2006 by Marc S. Ressl (ressl@lonetree.com)
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* (C) 2008 by Nick Westgate (Nick.Westgate@gmail.com)
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* Released under the GPL
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*
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* Change list:
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*
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* Version 1.0.2 - changes by Nick:
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* - improved sound sync by moving AppleSpeaker into the main thread
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* - added version (F1)
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* - added multiple disks & switching (F3, F4)
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* - added ZIP archive support
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* - fixed HTTP disk image access bug
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*/
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import java.applet.Applet;
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import java.awt.Graphics;
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import java.awt.event.ComponentEvent;
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import java.awt.event.ComponentListener;
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import java.awt.event.InputEvent;
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import java.awt.event.KeyEvent;
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import java.awt.event.KeyListener;
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import java.awt.event.MouseEvent;
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import java.awt.event.MouseListener;
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import java.awt.event.MouseMotionListener;
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import java.io.DataInputStream;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.util.zip.GZIPInputStream;
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import java.util.zip.ZipInputStream;
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/**
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* AppleIIGo class<p>
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* Connects EmAppleII, AppleCanvas
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*/
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public class AppleIIGo extends Applet implements KeyListener, ComponentListener,
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MouseListener, MouseMotionListener {
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final String version = "1.0.2";
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final String versionString = "AppleIIGo Version " + version;
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// Class instances
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private EmAppleII apple;
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private AppleDisplay display;
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private DiskII disk;
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// Machine variables
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private boolean isCpuPaused;
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private boolean isCpuDebugEnabled;
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// Keyboard variables
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private boolean keyboardUppercaseOnly;
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// Paddle variables
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private boolean isPaddleInverted;
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// Disk variables
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private String diskDriveResource[] = new String[2];
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private boolean diskWritable;
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private String[] disks0;
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private String[] disks1;
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private int disk0;
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private int disk1;
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/**
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* Debug
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*/
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private void debug(String message) {
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// System.out.println(message);
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}
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/**
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* Parameters
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*/
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private String getAppletParameter(String parameter, String defaultValue) {
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String value = getParameter(parameter);
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if ((value == null) || (value.length() == 0))
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return defaultValue;
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return value;
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}
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/**
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* On applet initialization
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*/
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public void init() {
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debug("init()");
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// Activate listeners
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addKeyListener(this);
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addMouseListener(this);
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addMouseMotionListener(this);
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if (getAppletParameter("displayFocusOnStart", "true").equals("true"))
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addComponentListener(this);
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// Initialize Apple II emulator
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apple = new EmAppleII();
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loadRom(getAppletParameter("cpuRom", ""));
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apple.setCpuSpeed(new Integer(getAppletParameter("cpuSpeed", "1000")).intValue());
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isCpuPaused = getAppletParameter("cpuPaused", "false").equals("true");
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isCpuDebugEnabled = getAppletParameter("cpuDebugEnabled", "false").equals("true");
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apple.setStepMode(getAppletParameter("cpuStepMode", "false").equals("true"));
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// Keyboard
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keyboardUppercaseOnly = getAppletParameter("keyboardUppercaseOnly", "true").equals("true");
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// Display
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display = new AppleDisplay(this, apple);
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display.setScale(new Float(getAppletParameter("displayScale", "1")).floatValue());
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display.setRefreshRate(new Integer(getAppletParameter("displayRefreshRate", "10")).intValue());
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display.setColorMode(new Integer(getAppletParameter("displayColorMode", "0")).intValue());
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display.setStatMode(getAppletParameter("displayStatMode", "false").equals("true"));
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display.setGlare(getAppletParameter("displayGlare", "false").equals("true"));
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// Speaker
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apple.speaker = new AppleSpeaker(apple);
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apple.speaker.setVolume(new Integer(getAppletParameter("speakerVolume", "6")).intValue());
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// Peripherals
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disk = new DiskII();
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apple.setPeripheral(disk, 6);
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// Initialize disk drives
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diskWritable = getAppletParameter("diskWritable", "false").equals("true");
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disks0 = getAppletParameter("diskDrive1", "").split("[|]");
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disk0 = 0;
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disks1 = getAppletParameter("diskDrive2", "").split("[|]");
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disk1 = 0;
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mountDisk(0, disks0[disk0]);
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mountDisk(1, disks1[disk1]);
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// Start CPU
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if (!isCpuPaused)
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resume();
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}
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/**
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* Start applet
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*/
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public void start() {
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debug("AppleIIGo Version " + version);
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debug("start()");
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}
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/**
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* Stop applet
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*/
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public void stop() {
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debug("stop()");
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}
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/**
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* On applet destruction
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*/
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public void destroy() {
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debug("destroy()");
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unmountDisk(0);
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unmountDisk(1);
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}
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// Public Java interface
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/**
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* Javascript interface
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*/
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public void focus() {
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debug("focus()");
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requestFocus();
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}
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/**
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* Pause emulator
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*/
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public void pause() {
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debug("pause()");
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isCpuPaused = true;
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apple.setPaused(isCpuPaused);
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display.setPaused(isCpuPaused);
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apple.speaker.setPaused(isCpuPaused);
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}
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/**
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* Resume emulator
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*/
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public void resume() {
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debug("resume()");
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isCpuPaused = false;
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apple.speaker.setPaused(isCpuPaused);
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display.setPaused(isCpuPaused);
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apple.setPaused(isCpuPaused);
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}
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/**
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* Restarts emulator
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*/
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public void restart() {
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debug("restart()");
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apple.restart();
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}
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/**
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* Open input stream
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*/
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private DataInputStream openInputStream(String resource) {
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InputStream is = null;
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try {
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URL url = new URL(getCodeBase(), resource);
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debug("resource: " + url.toString());
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is = url.openStream();
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if (resource.toLowerCase().endsWith(".gz"))
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{
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is = new GZIPInputStream(is);
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}
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else if (resource.toLowerCase().endsWith(".zip"))
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{
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is = new ZipInputStream(is);
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((ZipInputStream)is).getNextEntry();
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}
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} catch (Exception e) {
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debug("Exeption: " + e.getLocalizedMessage());
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}
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if (is == null)
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{
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debug("failed");
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return null;
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}
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else
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{
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debug("ok");
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return new DataInputStream(is);
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}
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}
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/**
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* Open output stream
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*/
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private OutputStream openOutputStream(String resource) {
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OutputStream os = null;
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try {
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if (!(resource.substring(0, 6).equals("http://")))
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os = new FileOutputStream(resource);
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} catch (Exception e) {
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}
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return os;
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}
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/**
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* Load ROM
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*/
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public boolean loadRom(String resource) {
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debug("loadRom(resource: " + resource + ")");
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boolean success = false;
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try {
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DataInputStream is = openInputStream(resource);
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success = apple.loadRom(is);
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is.close();
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} catch (Exception e) {
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debug("Exeption: " + e.getLocalizedMessage());
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}
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return success;
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}
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/**
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* Mount a disk
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*/
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public boolean mountDisk(int drive, String resource) {
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debug("mountDisk(drive: " + drive + ", resource: " + resource + ")");
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boolean success = false;
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if ((drive < 0) || (drive > 2))
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return success;
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try {
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unmountDisk(drive);
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diskDriveResource[drive] = resource;
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DataInputStream is = openInputStream(resource);
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success = disk.readDisk(drive, is, 254, false);
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is.close();
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} catch (Exception e) {
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debug("Exeption: " + e.getLocalizedMessage());
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}
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return success;
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}
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/**
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* Unmount a disk
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*/
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public void unmountDisk(int drive) {
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debug("unmountDisk(drive: " + drive + ")");
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if ((drive < 0) || (drive > 2))
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return;
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if (!diskWritable)
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return;
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try {
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OutputStream os = openOutputStream(diskDriveResource[drive]);
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disk.writeDisk(drive, os);
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os.close();
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} catch (Exception e) {
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}
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}
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/**
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* Set color mode
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*/
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public void setColorMode(int value) {
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debug("setColorMode(value: " + value + ")");
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display.setColorMode(value);
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}
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/**
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* Get disk activity
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*/
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public boolean getDiskActivity() {
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return (!isCpuPaused && disk.isMotorOn());
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}
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/**
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* KeyListener event handling
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*/
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public void keyTyped(KeyEvent e) {
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// Send to emulator
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int key = e.getKeyChar();
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if (key == 10)
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apple.setKeyLatch(13);
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else if (key < 128) {
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if (keyboardUppercaseOnly && (key >= 97) && (key <= 122))
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key -= 32;
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apple.setKeyLatch(key);
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}
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}
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public void keyPressed(KeyEvent e) {
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switch(e.getKeyCode()) {
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case KeyEvent.VK_BACK_SPACE:
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case KeyEvent.VK_LEFT:
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apple.setKeyLatch(8);
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break;
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case KeyEvent.VK_RIGHT:
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apple.setKeyLatch(21);
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break;
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case KeyEvent.VK_UP:
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if (e.isControlDown())
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apple.speaker.setVolume(apple.speaker.getVolume() + 1);
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else
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apple.setKeyLatch(11);
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break;
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case KeyEvent.VK_DOWN:
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if (e.isControlDown())
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apple.speaker.setVolume(apple.speaker.getVolume() - 1);
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else
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apple.setKeyLatch(10);
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break;
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case KeyEvent.VK_ESCAPE:
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apple.setKeyLatch(27);
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break;
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case KeyEvent.VK_DELETE:
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apple.setKeyLatch(127);
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break;
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case KeyEvent.VK_HOME:
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if (e.isControlDown())
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apple.restart();
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else
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apple.reset();
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break;
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case KeyEvent.VK_F1:
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showStatus("AppleIIGo Version " + version);
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break;
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case KeyEvent.VK_F3:
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if (disks0.length > 1) {
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disk0 = ++disk0 % disks0.length;
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mountDisk(0, disks0[disk0]);
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showStatus("Disk 1: " + disks0[disk0]);
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}
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break;
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case KeyEvent.VK_F4:
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if (disks1.length > 1) {
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disk1 = ++disk1 % disks1.length;
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mountDisk(1, disks1[disk1]);
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showStatus("Disk 2: " + disks1[disk1]);
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}
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break;
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case KeyEvent.VK_F5:
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if (isCpuDebugEnabled)
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display.setStatMode(!display.getStatMode());
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break;
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case KeyEvent.VK_F6:
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if (isCpuDebugEnabled)
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apple.setStepMode(!apple.getStepMode());
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break;
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case KeyEvent.VK_F7:
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if (isCpuDebugEnabled) {
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apple.setStepMode(apple.getStepMode());
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apple.stepInstructions(1);
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}
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break;
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case KeyEvent.VK_F8:
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if (isCpuDebugEnabled) {
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apple.setStepMode(apple.getStepMode());
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apple.stepInstructions(128);
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}
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break;
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}
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}
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public void keyReleased(KeyEvent e) {
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}
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/**
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* ComponentListener event handling
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*/
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public void componentHidden(ComponentEvent e) {
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}
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public void componentMoved(ComponentEvent e) {
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}
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public void componentResized(ComponentEvent e) {
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}
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public void componentShown(ComponentEvent e) {
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debug("componentShown()");
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removeComponentListener(this);
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requestFocus();
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}
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/**
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* MouseListener, MouseMotionListener event handling
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*/
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public void mouseClicked(MouseEvent e) {
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}
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public void mouseEntered(MouseEvent e) {
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try {
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getAppletContext().showDocument(new URL("javascript:flipMouseOver();"));
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} catch (MalformedURLException ex) {
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}
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}
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public void mouseExited(MouseEvent e) {
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try {
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getAppletContext().showDocument(new URL("javascript:flipMouseOut();"));
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} catch (MalformedURLException ex) {
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}
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}
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public void mousePressed(MouseEvent e) {
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int modifiers = e.getModifiers();
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if ((modifiers & InputEvent.BUTTON1_MASK) != 0)
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apple.paddle.setButton(0, true);
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if ((modifiers & InputEvent.BUTTON3_MASK) != 0)
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apple.paddle.setButton(1, true);
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}
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public void mouseReleased(MouseEvent e) {
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int modifiers = e.getModifiers();
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if ((modifiers & InputEvent.BUTTON1_MASK) != 0)
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apple.paddle.setButton(0, false);
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if ((modifiers & InputEvent.BUTTON3_MASK) != 0)
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apple.paddle.setButton(1, false);
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}
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public void mouseDragged(MouseEvent e) {
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mouseMoved(e);
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}
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public void mouseMoved(MouseEvent e) {
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if (isPaddleInverted) {
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apple.paddle.setPaddlePos(0, (int) (display.getScale() * (255 - e.getY() * 256 / 192)));
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apple.paddle.setPaddlePos(1, (int) (display.getScale() * (255 - e.getX() * 256 / 280)));
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} else {
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apple.paddle.setPaddlePos(0, (int) (e.getX() * display.getScale() * 256 / 280));
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apple.paddle.setPaddlePos(1, (int) (e.getY() * display.getScale() * 256 / 192));
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}
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}
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/**
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* Applet paint function
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*/
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public void paint(Graphics g) {
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display.paint(g);
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}
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/**
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* Applet update function
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*/
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public void update(Graphics g) {
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display.paint(g);
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}
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}
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