refactored screen env into screen's companion object (same as already done with computer); keeping track of pressed keys client-side to send char on key-up (lwjgl doesn't seem to properly provide that, code and char always seem to be 0 on key up) and to send key up events for all still pressed keys when closing the gui. server will have to keep track of all key presses (and the players that did them) at some point, too, since clients may just disconnect, for example (or be malicious)
6 files changed
