[Haskell-cafe] Netwire, keyboard events, and games

[Patrick Hurst]

I'm using netwire to build a game; one of the things the player can do is
move around using WASD. I want to use key *events* as the 'basis' of my
wires, not the entire state vector of the keyboard so that, for example, a
press event on D increments the velocity by (200, 0) and a release event
decrements it by that much. However, this has the problem that I can't
actually get the velocity unless I have an event to feed into the wires,
which means I can only update the screen when the user presses or releases
a key. While this might make for interesting gameplay, it's not what I want.

is the right thing to do to make the input something like a Maybe KeyEvent
instead, and pass in Nothing whenever I want to get output without an event
for, e.g., a render?
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