mods/hopper/api.lua

   1 hopper.containers = {}
   2 hopper.groups = {}
   3 hopper.neighbors = {}
   4
   5 -- global function to add new containers
   6 function hopper:add_container(list)
   7         for _, entry in pairs(list) do
   8
   9                 local target_node = entry[2]
  10                 local neighbor_node
  11
  12                 if string.sub(target_node, 1, 6) == "group:" then
  13                         local group_identifier, group_number
  14                         local equals_index = string.find(target_node, "=")
  15                         if equals_index ~= nil then
  16                                 group_identifier = string.sub(target_node, 7, equals_index-1)
  17                                 -- it's possible that the string was of the form "group:blah = 1", in which case we want to trim spaces off the end of the group identifier
  18                                 local space_index = string.find(group_identifier, " ")
  19                                 if space_index ~= nil then
  20                                         group_identifier = string.sub(group_identifier, 1, space_index-1)
  21                                 end
  22                                 group_number = tonumber(string.sub(target_node, equals_index+1, -1))
  23                         else
  24                                 group_identifier = string.sub(target_node, 7, -1)
  25                                 group_number = "all" -- special value to indicate no number was provided
  26                         end
  27
  28                         local group_info = hopper.groups[group_identifier]
  29                         if group_info == nil then
  30                                 group_info = {}
  31                         end
  32                         if group_info[group_number] == nil then
  33                                 group_info[group_number] = {}
  34                         end
  35                         group_info[group_number][entry[1]] = entry[3]
  36                         hopper.groups[group_identifier] = group_info
  37                         neighbor_node = "group:"..group_identifier
  38                         -- result is a table of the form groups[group_identifier][group_number][relative_position][inventory_name]
  39                 else
  40                         local node_info = hopper.containers[target_node]
  41                         if node_info == nil then
  42                                 node_info = {}
  43                         end
  44                         node_info[entry[1]] = entry[3]
  45                         hopper.containers[target_node] = node_info
  46                         neighbor_node = target_node
  47                         -- result is a table of the form containers[target_node_name][relative_position][inventory_name]
  48                 end
  49
  50                 local already_in_neighbors = false
  51                 for _, value in pairs(hopper.neighbors) do
  52                         if value == neighbor_node then
  53                                 already_in_neighbors = true
  54                                 break
  55                         end
  56                 end
  57                 if not already_in_neighbors then
  58                         table.insert(hopper.neighbors, neighbor_node)
  59                 end
  60         end
  61 end
  62
  63 -- "top" indicates what inventory the hopper will take items from if this node is located at the hopper's wide end
  64 -- "side" indicates what inventory the hopper will put items into if this node is located at the hopper's narrow end and at the same height as the hopper
  65 -- "bottom" indicates what inventory the hopper will put items into if this node is located at the hopper's narrow end and either above or below the hopper.
  66
  67 hopper:add_container({
  68         {"top", "hopper:hopper", "main"},
  69         {"bottom", "hopper:hopper", "main"},
  70         {"side", "hopper:hopper", "main"},
  71         {"side", "hopper:hopper_side", "main"},
  72
  73         {"bottom", "hopper:chute", "main"},
  74         {"side", "hopper:chute", "main"},
  75
  76         {"bottom", "hopper:sorter", "main"},
  77         {"side", "hopper:sorter", "main"},
  78 })
  79
  80 hopper:add_container({
  81         {"top", "utility:chest", "main"},
  82         {"bottom", "utility:chest", "main"},
  83         {"side", "utility:chest", "main"},
  84
  85         {"top", "utility:chest_open", "main"},
  86         {"bottom", "utility:chest_open", "main"},
  87         {"side", "utility:chest_open", "main"},
  88
  89         {"top", "utility:furnace", "dst"},
  90         {"bottom", "utility:furnace", "src"},
  91         {"side", "utility:furnace", "fuel"},
  92
  93         {"top", "utility:furnace_active", "dst"},
  94         {"bottom", "utility:furnace_active", "src"},
  95         {"side", "utility:furnace_active", "fuel"},
  96 })
  97