function refill_well()
    for _,well in pairs(global.wells) do 
      well.chest.insert({name = well.item, count = well.items_per_second * 15})
    end
end

local function on_tick()
	walk_on_tick()
	if game.tick % 60 == 0 then
    poll_on_second()
		walk_distance_on_second()
		if game.tick % 1200 == 0 then
			player_list_on_12_seconds()
		end
    if  game.tick % 180 == 0 then
      fish_market_on_180_ticks()
      if game.tick % 900 == 0 then
        refill_well()
      end
		end
  end
end


Event.register(defines.events.on_tick, on_tick)