Minetest-WorldEditAdditions/worldeditadditions_commands/commands/erode.lua

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local wea_c = worldeditadditions_core
local Vector3 = wea_c.Vector3
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worldeditadditions_core.register_command("erode", {
params = "[<snowballs|river> [<key_1> [<value_1>]] [<key_2> [<value_2>]] ...]",
description = "**experimental** Runs the specified erosion algorithm over the given defined region. This may occur in 2d or 3d. Currently implemented algorithms: snowballs (default;2d hydraulic-like). Also optionally takes an arbitrary set of key - value pairs representing parameters to pass to the algorithm. See the full documentation for details.",
privs = { worldedit = true },
require_pos = 2,
parse = function(params_text)
if not params_text or params_text == "" then
return true, "snowballs", {}
end
if params_text:find("%s") == nil then
return true, params_text, {}
end
local algorithm, params = params_text:match("([^%s]+)%s(.+)")
if algorithm == nil then
return false, "Failed to split params_text into 2 parts (this is probably a bug)"
end
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local success, map = wea_c.parse.map(params)
if not success then return success, map end
return true, algorithm, map
end,
nodes_needed = function(name)
return worldedit.volume(worldedit.pos1[name], worldedit.pos2[name])
end,
func = function(name, algorithm, params)
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local start_time = wea_c.get_ms_time()
local pos1, pos2 = Vector3.sort(worldedit.pos1[name], worldedit.pos2[name])
local success, msg, stats = worldeditadditions.erode.run(
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pos1, pos2,
algorithm, params
)
if not success then return success, msg end
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local time_taken = wea_c.get_ms_time() - start_time
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minetest.log("action", name.." used //erode "..algorithm.." at "..pos1.." - "..pos2..", adding "..stats.added.." nodes and removing "..stats.removed.." nodes in "..time_taken.."s")
return true, msg.."\n"..stats.added.." nodes added and "..stats.removed.." nodes removed in "..wea_c.format.human_time(time_taken)
end
})