Improve readability; fix end-state handler.

Fixed end-state handler to stop taking Ball messages when end-state
detected.  Looking at Yahoo's results board, failing at this could
result in the system looking as if I had poor win-state detection.

Fixed win-state detection to enclose the card matrix.  This makes the
coordinate tests look like it takes coordinate pairs, which is the
effect we want, improves readability, and reduces errors.

bingo.coffee

@@ -4,7 +4,7 @@ io = require "socket.io-client"
 
 bingo = ["B", "I", "N", "G", "O"]
 coors = [0..4]
-state = "playing"
+state = ""
 
 snum = (n) -> if n < 10 then " #{n}" else "#{n}"
 fnum = (j) -> if j.found then "[#{snum(j.n)}]" else " #{snum(j.n)} "
@@ -19,21 +19,22 @@ socket.on "connect", ->
             ({n: j, found: false} for j in data.slots[i])
 
     socket.on "number", (ball) ->
+        return if state
         m = ball.match /([BINGO])(\d+)/
         row = bingo.indexOf(m[1])
         card[row] = for j in card[row]
             if j.found or j.n != +m[2] then j else {n: j.n, found: true}
 
-        may = (m, cond) -> if cond.found then m+1 else m
+        may = (m, x, y) -> if card[x][y].found then m+1 else m
 
         f = (->
             for i in coors
-                for test in [((m, j) -> may m, card[i][j]), ((m, j) -> may m, card[j][i])]
+                for test in [((m, j) -> may m, i, j), ((m, j) -> may m, j, i)]
                     if 5 == coors.reduce test, 0
                         return true
 
 
-            for test in [((m, j) -> may m, card[j][j]), ((m, j) -> may m, card[j][4 - j])]
+            for test in [((m, j) -> may m, j, j), ((m, j) -> may m, j, 4-j)]
                 if 5 == coors.reduce test, 0
                     return true
 
@@ -50,7 +51,7 @@ socket.on "connect", ->
     socket.on "lose", -> state = "lost"
 
     socket.on "disconnect", ->
-        console.log "You appear to have #{state}."
+        console.log "You appear to have " + if state then state else "TERMINATED UNEXPECTEDLY."
         process.exit()
 
     socket.emit "register",