ball.lua - implement a random visiting ball

main.lua

@@ -1,6 +1,7 @@
 
 local mkArena = require "arena"
 local mkQbert = require "qbert"
+local mkBall = require "ball"
 
 local arena = mkArena(
    7,
@@ -27,6 +28,12 @@ end
 
 function love.update(dt)
 
+   time = time + dt
+   if time > 10 then
+      time = 0
+      table.insert(mobs, mkBall(arena))
+   end
+   
    if love.keyboard.isDown('i') then
       qbert.jump('ne')
    end