new cow breeder app

apps/cows.lua

@@ -0,0 +1,69 @@
+_G.requireInjector(_ENV)
+
+local Config = require('config')
+local Util   = require('util')
+
+local device = _G.device
+local os     = _G.os
+local turtle = _G.turtle
+
+local config = {
+  max_cows = 15,
+}
+Config.load('cows', config)
+
+local sensor = device['plethora:sensor'] or
+  turtle.equip('right', 'plethora:module:3') and device['plethora:sensor'] or
+  error('Plethora sensor required')
+
+local function getCowCount()
+  local blocks = sensor.sense()
+
+  Util.filterInplace(blocks, function(v)
+    if v.name == 'Cow' then
+      return v.y > -.5
+    end
+  end)
+
+  return #blocks
+end
+
+local function butcher()
+  turtle.equip('right', 'minecraft:diamond_sword')
+  turtle.select(1)
+
+  turtle.attack()
+  for _ = 1, 3 do
+    turtle.turnRight()
+    turtle.attack()
+  end
+  turtle.equip('right', 'plethora:module:3')
+
+  turtle.dropUp('minecraft:beef')
+  turtle.dropUp('minecraft:leather')
+end
+
+local function breed()
+  turtle.select(1)
+
+  turtle.place('minecraft:wheat')
+  for _ = 1, 3 do
+    turtle.turnRight()
+    turtle.place('minecraft:wheat')
+  end
+end
+
+turtle.run(function()
+  repeat
+    if getCowCount() > config.max_cows then
+      turtle.setStatus('Butchering')
+      butcher()
+    elseif turtle.getItemCount('minecraft:wheat') == 0 then
+      turtle.setStatus('Out of wheat')
+    else
+      turtle.setStatus('Breeding')
+      breed()
+    end
+    os.sleep(5)
+  until turtle.isAborted()
+end)