Program for managing a clock tower bell.

clock-chime.lua

@@ -0,0 +1,21 @@
+-- Program that sends a redstone pulse at noon and midnight
+
+-- the side of the computer to output the pulse
+local SIDE = "right"
+
+function pulse ()
+    rs.setOutput(true, SIDE)
+    os.sleep(0.05) -- maybe sleep for a tick?
+    rs.setOutput(false, SIDE)
+end
+
+while true do
+    local timedelta = os.time("ingame") % 12
+    if timedelta < 0.2 then -- too strict?
+        pulse()
+        os.sleep(0.2) -- don't pulse more than once
+    else
+        local sleep_amt = 60 * (12 - timedelta) / 2 -- cut the time in half?
+        os.sleep(sleep_amt)
+    end
+end