Reorganize some config

ants/conf.lua

@@ -0,0 +1,4 @@
+function love.conf(t)
+  t.window.highdpi = false
+  t.window.title = "ants"
+end

ants/main.lua

@@ -41,8 +41,8 @@ local function initColors(rules)
   end
 end
 
-local function initScreen(width, height)
+local function initScreen()
-  love.window.setMode(width, height, { highdpi = true })
+  local width, height = love.graphics.getDimensions()
   WIDTH, HEIGHT = round2even(width), round2even(height)
   CANVAS = love.graphics.newCanvas(WIDTH, HEIGHT)
   CANVAS:renderTo(function()
@@ -79,11 +79,9 @@ local function initGrid()
 end
 
 function love.load(args)
-  local width = args[1] or 800
+  local rules = args[1] or "RL"
-  local height = args[2] or 600
-  local rules = args[3] or "RL"
   initColors(rules)
-  initScreen(width, height)
+  initScreen()
   initAnt()
   initGrid()
 end