forked from thunderdog1138/star_wars
Delete group.lua
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thunderdog1138
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127
mods/group.lua
127
mods/group.lua
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local S = minetest.get_translator("unified_inventory")
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function unified_inventory.canonical_item_spec_matcher(spec)
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local specname = ItemStack(spec):get_name()
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if specname:sub(1, 6) ~= "group:" then
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return function (itemname)
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return itemname == specname
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end
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end
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local group_names = specname:sub(7):split(",")
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return function (itemname)
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local itemdef = minetest.registered_items[itemname]
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for _, group_name in ipairs(group_names) do
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if (itemdef.groups[group_name] or 0) == 0 then
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return false
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end
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end
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return true
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end
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end
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function unified_inventory.item_matches_spec(item, spec)
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local itemname = ItemStack(item):get_name()
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return unified_inventory.canonical_item_spec_matcher(spec)(itemname)
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end
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function unified_inventory.extract_groupnames(groupname)
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local specname = ItemStack(groupname):get_name()
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if specname:sub(1, 6) ~= "group:" then
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return nil, 0
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end
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local group_names = specname:sub(7):split(",")
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return table.concat(group_names, S(" and ")), #group_names
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end
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unified_inventory.registered_group_items = {
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mesecon_conductor_craftable = "mesecons:wire_00000000_off",
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stone = "default:cobble",
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wood = "default:wood",
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book = "default:book",
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sand = "default:sand",
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leaves = "default:leaves",
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tree = "default:tree",
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vessel = "vessels:glass_bottle",
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wool = "wool:white",
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}
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function unified_inventory.register_group_item(groupname, itemname)
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unified_inventory.registered_group_items[groupname] = itemname
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end
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-- This is used when displaying craft recipes, where an ingredient is
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-- specified by group rather than as a specific item. A single-item group
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-- is represented by that item, with the single-item status signalled
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-- in the "sole" field. If the group contains no items at all, the item
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-- field will be nil.
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--
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-- Within a multiple-item group, we prefer to use an item that has the
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-- same specific name as the group, and if there are more than one of
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-- those items we prefer the one registered for the group by a mod.
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-- Among equally-preferred items, we just pick the one with the
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-- lexicographically earliest name.
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--
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-- The parameter to this function isn't just a single group name.
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-- It may be a comma-separated list of group names. This is really a
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-- "group:..." ingredient specification, minus the "group:" prefix.
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local function compute_group_item(group_name_list)
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local group_names = group_name_list:split(",")
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local candidate_items = {}
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for itemname, itemdef in pairs(minetest.registered_items) do
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if (itemdef.groups.not_in_creative_inventory or 0) == 0 then
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local all = true
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for _, group_name in ipairs(group_names) do
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if (itemdef.groups[group_name] or 0) == 0 then
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all = false
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end
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end
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if all then table.insert(candidate_items, itemname) end
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end
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end
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local num_candidates = #candidate_items
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if num_candidates == 0 then
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return {sole = true}
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elseif num_candidates == 1 then
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return {item = candidate_items[1], sole = true}
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end
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local is_group = {}
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local registered_rep = {}
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for _, group_name in ipairs(group_names) do
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is_group[group_name] = true
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local rep = unified_inventory.registered_group_items[group_name]
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if rep then registered_rep[rep] = true end
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end
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local bestitem = ""
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local bestpref = 0
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for _, item in ipairs(candidate_items) do
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local pref
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if registered_rep[item] then
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pref = 4
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elseif string.sub(item, 1, 8) == "default:" and is_group[string.sub(item, 9)] then
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pref = 3
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elseif is_group[item:gsub("^[^:]*:", "")] then
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pref = 2
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else
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pref = 1
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end
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if pref > bestpref or (pref == bestpref and item < bestitem) then
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bestitem = item
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bestpref = pref
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end
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end
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return {item = bestitem, sole = false}
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end
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local group_item_cache = {}
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function unified_inventory.get_group_item(group_name)
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if not group_item_cache[group_name] then
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group_item_cache[group_name] = compute_group_item(group_name)
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end
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return group_item_cache[group_name]
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end
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