mirror of
https://github.com/sbrl/Minetest-WorldEditAdditions.git
synced 2024-11-22 15:33:00 +00:00
60 lines
3.2 KiB
Lua
60 lines
3.2 KiB
Lua
-- ███ ██ ██████ ██ ███████ ███████ █████ ██████ ██████ ██ ██ ██ ██████ ██████
|
|
-- ████ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
|
|
-- ██ ██ ██ ██ ██ ██ ███████ █████ ███████ ██████ ██████ ██ ████ █████ ██ ██
|
|
-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
|
|
-- ██ ████ ██████ ██ ███████ ███████ ██ ██ ██ ██ ███████ ██ ███████ ██████
|
|
|
|
--- Similar to cubeapply, except that it takes 2 positions and randomly keeps changes based on a noise pattern.
|
|
-- Takes a backup copy of the defined region, runs the given function, and then
|
|
-- restores the bits that aren't above the nosie threshold.
|
|
-- @param {Position} pos1 The 1st position defining the region boundary
|
|
-- @param {Position} pos2 The 2nd positioon defining the region boundary
|
|
-- @param {Function} func The function to call that performs the action in question. It is expected that the given function will accept no arguments.
|
|
function worldeditadditions.noiseapply2d(pos1, pos2, threshold, scale, func)
|
|
local time_taken_all = worldeditadditions.get_ms_time()
|
|
pos1, pos2 = worldeditadditions.Vector3.sort(pos1, pos2)
|
|
if not threshold then threshold = 0.5 end
|
|
-- pos2 will always have the highest co-ordinates now
|
|
|
|
-- Fetch the nodes in the specified area
|
|
local manip_before, area_before = worldedit.manip_helpers.init(pos1, pos2)
|
|
local data_before = manip_before:get_data()
|
|
|
|
local time_taken_fn = worldeditadditions.get_ms_time()
|
|
func()
|
|
time_taken_fn = worldeditadditions.get_ms_time() - time_taken_fn
|
|
|
|
local manip_after, area_after = worldedit.manip_helpers.init(pos1, pos2)
|
|
local data_after = manip_after:get_data()
|
|
|
|
local size2d = pos2 - pos1 + worldeditadditions.Vector3.new(1, 1, 1)
|
|
print("DEBUG pos1", pos1, "pos2", pos2, "size2d", size2d)
|
|
local success, noise = worldeditadditions.noise.make_2d(size2d, pos1, {
|
|
algorithm = "perlinmt",
|
|
scale = scale
|
|
})
|
|
if not success then return success, noise end
|
|
|
|
for z = pos2.z, pos1.z, -1 do
|
|
for y = pos2.y, pos1.y, -1 do
|
|
for x = pos2.x, pos1.x, -1 do
|
|
local i_before = area_before:index(x, y, z)
|
|
local i_after = area_after:index(x, y, z)
|
|
|
|
local i_noise = (z-pos1.z)*size2d.x + (x-pos1.x)
|
|
|
|
-- Roll everything where the noise function returns less than 0.5
|
|
if noise[i_noise] < threshold then
|
|
data_after[i_after] = data_before[i_before]
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
-- Save the modified nodes back to disk & return
|
|
-- No need to save - this function doesn't actually change anything
|
|
worldedit.manip_helpers.finish(manip_after, data_after)
|
|
|
|
time_taken_all = worldeditadditions.get_ms_time() - time_taken_all
|
|
return true, { all = time_taken_all, fn = time_taken_fn }
|
|
end
|