map-reset (f4) feature causes crash

[aaron-casper]

reset feature clears map UI, clears list of objects, closes file, but fails to reopen file. error returned "I/O operation on closed file object".

[aaron-casper]

Traceback (most recent call last):
  File "C:\Users\aaron\Desktop\besiege\mapmaker.py", line 404, in <module>
    f.write(brickwall_horiz.bricklayer(objID,scale,30,objX,Y,objY))
ValueError: I/O operation on closed file.``

[aaron-casper]

Poor handling of the file object by me. Now the call to mapReset not only gets provided the file object to close, it also generates the new file object as it's own instance and returns it. Lastly, the calling function applies that returned object over the existing object.

def mapReset (f):

    f.flush()

    os.fsync(f.fileno())

    print("file sync'd")

    f.close()

    print("file closed")

    try:

        f2 = open(mapName, "w")

    except Exception as e:

        print("IO Error: " + str(e))

    print("new file opened " + str(f.closed))

    f2.write(XMLheader)

    print("writing XML header")

    objects.clear()

    print("map memory cleared")

    headerBuffer.append("map reset")

    print("all done resetting the map")

    return f2

and

            if whichkey == "285":

                #print("map reset broken, issue on github")

                 f = mapReset(f)