/*

in this mess
there is one game that i wanted to implement
i was studying qbasic at the time and i was wondering
how a pseudo 3d isometric version of tankwar could be implemented

btw tank war is a clone of scroched earth who is predecessor of worm

ascii artillery game

  \  |  /
-@ @ @ @ @-

stay 2d like old one

80 column sand
can implement water, and more

the tank may move, crash explode

with only sand, water and rock, 2bits per cells is enough
because de world is only 80x25, 2000 cells
4000 bits is needed for the whole world
merly 500 bytes, or 333 base64, or 1000 base16


*/