I have come to the conclusion, that large amounts of TNT are simply not practical, unless you want to end up with minecraft slowing to a crawl.
Solution to this is to change the x,y and z sizes for the area created for example.
#def testbutton(): # print "test" def flatworld(): print("flat world") MINX = -5 MAXX = 5 MINZ = -5 MAXZ = 5 MINY = -5 MAXY = 5
Produces a much smaller block. As the original intention of this was to produce a large flat area I want to work on this but make it ground level rather than making what is essentially a huge hole in the game area.
I am going to experiment further and try and produce a nice size area, but go back to the original blocks, grass with air above.