36 lines
1.3 KiB
Lua
36 lines
1.3 KiB
Lua
maggems_landmark.amenity_names = {}
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maggems_landmark.amenity_add = {}
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maggems_landmark.amenity_remove = {}
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function maggems_landmark.register_amenity(name, func_add, func_remove)
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maggems_landmark.amenity_names[#maggems_landmark.amenity_names + 1] = name
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maggems_landmark.amenity_add[name] = func_add
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maggems_landmark.amenity_remove[name] = func_remove
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end
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function maggems_landmark.find_amenities(area)
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local _, amenities = minetest.find_nodes_in_area(area.min, area.max, maggems_landmark.amenity_names)
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for amen, count in pairs(amenities) do
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if (count == 0) then
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amenities[amen] = nil
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end
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end
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return amenities
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end
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function maggems_landmark.update_amenities(area)
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local pos = minetest.deserialize(area.data)
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if (minetest.get_node(pos).name ~= "maggems_landmark:home") then return false end
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local meta = minetest.get_meta(pos)
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local had_amenities = minetest.deserialize(meta:get("maggems_landmark:amenities"))
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had_amenities = had_amenities or {}
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local found_amenities = maggems_landmark.find_amenities(area)
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for amen in pairs(found_amenities) do
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if (had_amenities[amen] == nil) then maggems_landmark.amenity_add[amen](meta) end
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end
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for amen in pairs(had_amenities) do
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if (found_amenities[amen] == nil) then maggems_landmark.amenity_remove[amen](meta) end
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end
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meta:set_string("maggems_landmark:amenities", minetest.serialize(found_amenities))
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end
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