• ¶

    Dosbox interface

  • ¶

    Dosbox bootstrapping interface. Interface provides single class called Dosbox, this class is used to bootsrap and control dosbox.

    class @Dosbox
  • ¶

    Bootstrapping

  • ¶

    To bootsrap dosbox use this javascript code:

      <script type="text/javascript" src="js-dos-api.js"></script>
  <script type="text/javascript">
    new Dosbox({
      id: "dosbox",
      onload: function (dosbox) {
        dosbox.run("digger.zip", "./DIGGER.COM");
      },
      onrun: function (dosbox, app) {
        console.log("App '" + app + "' is runned");
      }
    });
  </script>

    Where:

    • id - element id where dosbox will create dosbox canvas
    • onload - callback was called when dosbox is initialized
    • onrun - callback was called when dos application was runned
      constructor: (options) ->
    @onload = options.onload
    @onrun = options.onrun
    @ui = new Dosbox.UI(options)
    @module = new Dosbox.Module canvas: @ui.canvas

    @ui.onStart () =>
      @ui.showLoader()
      @downloadScript()
  • ¶

    dosbox.run

  • ¶

    This method is used to mount zip archives to virtual filesystem and then to run dos program. First argument is url where zip archive is located, second is a executable name.

    Archive will be downloaded, extracted and then program will be runned.

      run: (archiveUrl, executable) ->
    new Dosbox.Mount @module, archiveUrl,
      success: () =>
        @ui.updateMessage "Launching #{executable}"
        hide = () => @ui.hideLoader()
        func = () => @_dosbox_main @, executable
        setTimeout(func, 1000)
        setTimeout(hide, 3000)
      progress: (total, current) =>
        @ui.updateMessage "Mount #{executable} (#{current * 100 / total | 0}%)"
  • ¶

    Fullscreen

  • ¶

    You can change fullscreen mode by calling dosbox.requestFullScreen()

      requestFullScreen: ->
    if @module.requestFullScreen
      @module.requestFullScreen(true, false)
  • ¶

    Styling dosbox canvas

  • ¶

    You can change dosbox canvas size with css, like this:

      <style type="text/css">
    .dosbox-container { width: 640px; height: 400px; }
  </style>

    Digger example

  • ¶ 
    <!doctype html>
<html lang="en-us">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>js-dos api</title>
    <style type="text/css">
      .dosbox-container { width: 640px; height: 400px; }
    </style>
  </head>
  <body>
    <div id="dosbox"></div>
    <br/>
    <button onclick="dosbox.requestFullScreen();">Make fullscreen</button>
    <script type="text/javascript" src="js-dos-api.js"></script>
    <script type="text/javascript">
      var dosbox = new Dosbox({
        id: "dosbox",
        onload: function (dosbox) {
          dosbox.run("digger.zip", "./DIGGER.COM");
        },
        onrun: function (dosbox, app) {
          console.log("App '" + app + "' is runned");
        }
      });
    </script>
  </body>
</html>

      downloadScript: ->
    @module.setStatus 'Downloading js-dos'
    @ui.updateMessage 'Downloading js-dos'

    new Dosbox.Xhr 'js-dos.js',
      success: (script) =>
        @ui.updateMessage 'Initializing dosbox'
        func = () => @_jsdos_init @module, script, @onload
        setTimeout(func, 1000)

      progress: (total, current) =>
        @ui.updateMessage "Downloading js-dos (#{current * 100 / total | 0}%)"

  _jsdos_init: (module, script, onload) ->
    Module = module
    eval script
    onload @ if onload

  _dosbox_main: (dosbox, executable) ->
    try
      if dosbox.onrun
        func = () -> dosbox.onrun(dosbox, executable)
        setTimeout(func, 1000)

      dosbox.module.ccall 'dosbox_main', 'int', ['string'], [executable]
    catch exception
      if exception == 'SimulateInfiniteLoop'
  • ¶

    do nothing this is normal behaviour

          else
        console?.error? exception