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https://github.com/sbrl/Minetest-WorldEditAdditions.git
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57 lines
2.1 KiB
Lua
57 lines
2.1 KiB
Lua
--- Applies a layer of 2D noise over the terrain in the defined region.
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-- @module worldeditadditions.noise2d
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local wea = worldeditadditions
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-- ███ ██ ██████ ██ ███████ ███████ ██████ ██████
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-- ████ ██ ██ ██ ██ ██ ██ ██ ██ ██
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-- ██ ██ ██ ██ ██ ██ ███████ █████ █████ ██ ██
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-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
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-- ██ ████ ██████ ██ ███████ ███████ ███████ ██████
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--- Applies a layer of 2d noise over the terrain in the defined region.
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-- @param pos1 Vector pos1 of the defined region
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-- @param pos2 Vector pos2 of the defined region
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-- @param noise_params table A noise parameters table. Will be passed unmodified to PerlinNoise() from the Minetest API.
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function worldeditadditions.noise.noise2d(pos1, pos2, noise_params)
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pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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local region_height = pos1.y - pos2.y
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-- pos2 will always have the highest co-ordinates now
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-- Fill in the default params
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noise_params = worldeditadditions.noise.params_apply_default(noise_params)
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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 heightmap_old, heightmap_size = worldeditadditions.make_heightmap(
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pos1, pos2,
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manip, area,
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data
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)
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local heightmap_new = worldeditadditions.table.shallowcopy(heightmap_old)
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local noisemap = wea.noise.make_2d(noise_params, heightmap_size)
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wea.noise.apply_2d(
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heightmap_new,
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noisemap,
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heightmap_size,
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region_height,
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noise_params.apply
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)
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local success, stats = wea.apply_heightmap_changes(
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pos1, pos2,
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area, data,
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heightmap_old, heightmap_new,
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heightmap_size
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)
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if not success then return success, stats 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, stats
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end
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