thinning

startup.lua

@@ -1,11 +1,11 @@
 local db = require("stratumBackend")
-print("setup backend")
 local completion = require("cc.completion")
 local total_items = {}
 local monitor = peripheral.find("monitor")
 local price_map = {}
 local unit_name = nil
 local full_item_qoute
+local dirtied = false
 term.clear()
 local x,y = term.getSize()
 term.setCursorPos(1,y)
@@ -79,6 +79,7 @@ local function input()
                         total_items[added_item_name] = (total_items[added_item_name] or 0 ) + added_item_count
                         price_map[added_item_name] = db.getPrice(added_item_name)
                     end
+                    dirtied = true
                 end
             elseif event[2] == keys.l then
                 for k,v in pairs(total_items) do
@@ -126,6 +127,7 @@ local function input()
                         print("removed item")
                     end
                 end
+                dirtied = true
             elseif event[2] == keys.n then
                 sleep(0)
                 term.setCursorPos(1,y)
@@ -136,6 +138,7 @@ local function input()
                     unit_name = unit_namel
                     print("set currency unit")
                 end
+                dirtied = true
             elseif event[2] == keys.c then
                 sleep(0)
                 local added_currency_name = nil
@@ -159,6 +162,7 @@ local function input()
                         db.setWorth(added_currency_name,added_currency_worth)
                     end
                 end
+                dirtied = true
             elseif event[2] == keys.i then
                 sleep(0)
                 local added_item_name = nil
@@ -185,6 +189,7 @@ local function input()
                         price_map[added_item_name] = db.getPrice(added_item_name)
                     end
                 end
+                dirtied = true
             end
         end
     end
@@ -193,7 +198,7 @@ end
 local function render_monitor()
     while true do
         sleep(0)
-        if monitor then
+        if monitor and dirtied then
             if not full_item_qoute then
                 if not unit_name then
                     unit_name = db.getCurrencyUnit()
@@ -208,7 +213,7 @@ local function render_monitor()
                     total = total + (( price_map[k] or 0)*v)
                 end
                 monitor.setCursorPos(1,y)
-                monitor.write("total: "..tostring(total).." "..tostring(db.getCurrencyUnit()))
+                monitor.write("total: "..tostring(total).." "..tostring(unit_name))
             else
                 if not unit_name then
                     unit_name = db.getCurrencyUnit()
@@ -227,8 +232,9 @@ local function render_monitor()
                 monitor.setCursorPos(1,1)
                 monitor.write("Full Item Quote:")
                 monitor.setCursorPos(1,y)
-                monitor.write("total: "..tostring(total).." "..tostring(db.getCurrencyUnit()))
+                monitor.write("total: "..tostring(total).." "..tostring(unit_name))
             end
+            dirtied = false
         end
     end
 end