mirror of
https://github.com/sbrl/Minetest-WorldEditAdditions.git
synced 2024-12-04 21:13:50 +01:00
62 lines
3.3 KiB
Lua
62 lines
3.3 KiB
Lua
local wea_c = worldeditadditions_core
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local Vector3 = wea_c.Vector3
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-- ██████ ███████ ██████ ██ █████ ██████ ███████ ███ ███ ██ ██ ██
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-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ████ ████ ██ ██ ██
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-- ██████ █████ ██████ ██ ███████ ██ █████ ██ ████ ██ ██ ███
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-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
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-- ██ ██ ███████ ██ ███████ ██ ██ ██████ ███████ ██ ██ ██ ██ ██
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--- Like //mix, but replaces a given node instead.
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-- TODO: Implement //replacesplat, which picks seeder nodes with a percentage chance, and then some growth passes with e.g. cellular automata? We should probably be pushing towards a release though round about now
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-- @param pos1 Vector3 pos1 of the defined region to replace nodes in.
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-- @param pos2 Vector3 pos2 of the defined region to replace nodes in.
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-- @param target_node string The normalised name of the node to replace.
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-- @param target_node_chance number The chance that the target_node should be replaced. This is a 1-in-N chance, so far example a value of 4 would be a 1 in 4 chance of replacement = 25% chance.
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-- @param replacements table<string,number> A map of normalised node names to relative weights for the nodes to replace `target_node` with. Nodes with higher weights will be chosen to replace `target_node` more often.
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-- @returns bool,number,number,table<number,number> 1. Whether the operation was successful or not.
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-- 2. The number of nodes actually placed.
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-- 3. The number of nodes that *could* have been replaced if `target_node_chance` were set to 1.
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-- 4. A map of node ids to the number of times that node was placed.
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function worldeditadditions.replacemix(pos1, pos2, target_node, target_node_chance, replacements)
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pos1, pos2 = Vector3.sort(pos1, pos2)
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-- pos2 will always have the highest co-ordinates now
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-- Fetch the nodes in the specified area
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local manip, area = worldedit.manip_helpers.init(pos1, pos2)
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local data = manip:get_data()
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local node_id_target = minetest.get_content_id(target_node)
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-- Initialise statistics
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local changed = 0
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local candidates = 0
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local distribution = {}
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-- Generate the list of node ids
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local node_ids_replace, node_ids_replace_count = wea_c.make_weighted(replacements)
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for node_name, weight in pairs(replacements) do
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distribution[minetest.get_content_id(node_name)] = 0
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end
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for i in area:iterp(pos1, pos2) do
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if data[i] == node_id_target then
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candidates = candidates + 1
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if math.random(target_node_chance) == 1 then
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local next_id = node_ids_replace[math.random(node_ids_replace_count)]
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data[i] = next_id
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changed = changed + 1
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-- We initialised this above
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distribution[next_id] = distribution[next_id] + 1
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end
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end
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end
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-- Save the modified nodes back to disk & return
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worldedit.manip_helpers.finish(manip, data)
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return true, changed, candidates, distribution
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end
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