Random number generator

src/scripts/roll.coffee

@@ -0,0 +1,28 @@
+# Roll a dice!
+#
+# roll              - Generates a random number between 1 and 100 inclusive
+# roll <num>        - Generates a random number between 1 and <num> inclusive
+# rand <num>-<num2> - Generates a random number between <num> and <num2> inclusive
+#
+# Examples
+#
+#   roll
+#   # => rolled a 99 of 100
+#   roll 6
+#   # => rolled a 5 of 6
+#   roll 100-105
+#   # => rolled a 104 of 105
+#
+module.exports = (robot) ->
+  robot.respond /(roll)\s?(\d+)?-?(\d+)?/i, (msg) ->
+    low  = 1
+    high = 100
+
+    if msg.match[3] == undefined && msg.match[2]
+      high = msg.match[2]
+    else if msg.match[2] && msg.match[3]
+      low  = msg.match[2]
+      high = msg.match[3]
+
+    rand = Math.floor(Math.random() * parseInt(high)) + parseInt(low)
+    msg.reply "rolled a #{rand} of #{high}"