local mkHopper = require "hopper"
local dirs = {"se", "sw", "ne", "nw"}
local height = 10;

return function(arena)
   local self
   local function update(dt, se, sw)
      if se+sw >= arena.getSize() then
	 self.dead = true
	 return
      end
      
      local dir = dirs[math.random(2)]
      self.jump(dir)
   end
   local function draw(x, y )
      love.graphics.setColor(128,0,0);
      love.graphics.circle("fill", x, y, height)
   end
   
   self = mkHopper(arena, draw, update)
   return self
end