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+""" This module can serve as a startup script to play a Panda
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+application packed within a .mf file. Run via:
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+
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+python StartMF.py app.mf
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+
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+This is currently experimental, but the intent is to work towards a
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+prepackaged Panda distributable, designed to run applications exactly
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+like this.
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+
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+"""
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+
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+import sys
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+from direct.showbase import VFSImporter
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+from pandac.PandaModules import VirtualFileSystem, Filename, Multifile, ConfigPageManager, getModelPath
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+from direct.stdpy.file import file, open
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+import __builtin__
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+
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+MultifileRoot = '/mf'
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+
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+def runPackedApp(args):
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+ if not args:
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+ print "No Panda app specified. Use:"
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+ print "python StartMF.py app.mf"
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+ sys.exit(1)
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+
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+ vfs = VirtualFileSystem.getGlobalPtr()
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+
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+ fname = Filename.fromOsSpecific(args[0])
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+ if not vfs.exists(fname):
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+ print "No such file: %s" % (args[0])
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+ sys.exit(1)
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+
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+ mf = Multifile()
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+ if not mf.openRead(fname):
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+ print "Not a Panda Multifile: %s" % (args[0])
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+ sys.exit(1)
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+
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+ # Clear *all* the mount points, including "/", so that we no
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+ # longer access the disk directly.
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+ vfs.unmountAll()
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+
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+ # Mount the Multifile under /mf, by convention, and make that our
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+ # "current directory".
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+ vfs.mount(mf, MultifileRoot, vfs.MFReadOnly)
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+ vfs.chdir(MultifileRoot)
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+
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+ # Make sure the directories on our standard Python path are mounted
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+ # read-only, so we can still load Python.
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+ for dirname in sys.path:
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+ vfs.mount(dirname, dirname, vfs.MFReadOnly)
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+
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+ # Also mount some standard directories read-write (temporary and
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+ # app-data directories).
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+ tdir = Filename.temporary('', '')
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+ for dirname in set([ tdir.getDirname(),
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+ Filename.getTempDirectory().cStr(),
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+ Filename.getUserAppdataDirectory().cStr(),
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+ Filename.getCommonAppdataDirectory().cStr() ]):
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+ vfs.mount(dirname, dirname, 0)
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+
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+ # Now set up Python to import this stuff.
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+ VFSImporter.register()
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+ sys.path = [ MultifileRoot ] + sys.path
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+
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+ # Put our root directory on the model-path and prc-path, too.
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+ getModelPath().prependDirectory(MultifileRoot)
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+
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+ cpMgr = ConfigPageManager.getGlobalPtr()
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+ cpMgr.getSearchPath().prependDirectory(MultifileRoot)
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+ cpMgr.reloadImplicitPages()
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+
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+ # Replace the builtin open and file symbols so code will get our
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+ # versions by default, which can open and read files out of the
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+ # multifile.
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+ __builtin__.file = file
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+ __builtin__.open = open
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+
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+ import main
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+
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+if __name__ == '__main__':
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+ runPackedApp(sys.argv[1:])
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+
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David Rose