mirror of
https://github.com/sbrl/Minetest-WorldEditAdditions.git
synced 2024-12-23 03:55:01 +00:00
Add bit polyfill from https://github.com/Rabios/polyfill.lua
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commit
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GPG key ID:
1BE5172E637709C2
2 changed files with 247 additions and 44 deletions
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@ -6,57 +6,60 @@
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-- @author Starbeamrainbowlabs
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worldeditadditions = {}
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worldeditadditions.modpath = minetest.get_modpath("worldeditadditions")
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dofile(worldeditadditions.modpath.."/utils/vector.lua")
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worldeditadditions.Vector3 = dofile(worldeditadditions.modpath.."/utils/vector3.lua")
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worldeditadditions.Mesh,
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worldeditadditions.Face = dofile(worldeditadditions.modpath.."/utils/mesh.lua")
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local wea = worldeditadditions
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wea.modpath = minetest.get_modpath("worldeditadditions")
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worldeditadditions.Queue = dofile(worldeditadditions.modpath.."/utils/queue.lua")
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worldeditadditions.LRU = dofile(worldeditadditions.modpath.."/utils/lru.lua")
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wea.Vector3 = dofile(wea.modpath.."/utils/vector3.lua")
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wea.Mesh, wea.Face = dofile(wea.modpath.."/utils/mesh.lua")
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wea.Queue = dofile(wea.modpath.."/utils/queue.lua")
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wea.LRU = dofile(wea.modpath.."/utils/lru.lua")
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wea.bit = dofile(wea.modpath.."/utils/bit.lua")
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dofile(worldeditadditions.modpath.."/utils/strings/init.lua")
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dofile(worldeditadditions.modpath.."/utils/format/init.lua")
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dofile(worldeditadditions.modpath.."/utils/parse/init.lua")
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dofile(worldeditadditions.modpath.."/utils/tables/init.lua")
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dofile(wea.modpath.."/utils/vector.lua")
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dofile(wea.modpath.."/utils/strings/init.lua")
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dofile(wea.modpath.."/utils/format/init.lua")
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dofile(wea.modpath.."/utils/parse/init.lua")
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dofile(wea.modpath.."/utils/tables/init.lua")
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dofile(worldeditadditions.modpath.."/utils/numbers.lua")
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dofile(worldeditadditions.modpath.."/utils/nodes.lua")
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dofile(worldeditadditions.modpath.."/utils/node_identification.lua")
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dofile(worldeditadditions.modpath.."/utils/terrain.lua")
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dofile(worldeditadditions.modpath.."/utils/raycast_adv.lua") -- For the farwand
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dofile(worldeditadditions.modpath.."/utils/axes.lua")
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dofile(wea.modpath.."/utils/numbers.lua")
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dofile(wea.modpath.."/utils/nodes.lua")
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dofile(wea.modpath.."/utils/node_identification.lua")
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dofile(wea.modpath.."/utils/terrain.lua")
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dofile(wea.modpath.."/utils/raycast_adv.lua") -- For the farwand
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dofile(wea.modpath.."/utils/axes.lua")
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dofile(worldeditadditions.modpath.."/lib/compat/saplingnames.lua")
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dofile(wea.modpath.."/lib/compat/saplingnames.lua")
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dofile(worldeditadditions.modpath.."/lib/floodfill.lua")
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dofile(worldeditadditions.modpath.."/lib/overlay.lua")
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dofile(worldeditadditions.modpath.."/lib/layers.lua")
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dofile(worldeditadditions.modpath.."/lib/fillcaves.lua")
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dofile(worldeditadditions.modpath.."/lib/ellipsoid.lua")
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dofile(worldeditadditions.modpath.."/lib/torus.lua")
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dofile(worldeditadditions.modpath.."/lib/line.lua")
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dofile(worldeditadditions.modpath.."/lib/walls.lua")
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dofile(worldeditadditions.modpath.."/lib/replacemix.lua")
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dofile(worldeditadditions.modpath.."/lib/maze2d.lua")
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dofile(worldeditadditions.modpath.."/lib/maze3d.lua")
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dofile(worldeditadditions.modpath.."/lib/hollow.lua")
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dofile(worldeditadditions.modpath.."/lib/scale_up.lua")
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dofile(worldeditadditions.modpath.."/lib/scale_down.lua")
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dofile(worldeditadditions.modpath.."/lib/scale.lua")
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dofile(worldeditadditions.modpath.."/lib/conv/conv.lua")
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dofile(worldeditadditions.modpath.."/lib/erode/erode.lua")
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dofile(worldeditadditions.modpath.."/lib/noise/init.lua")
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dofile(wea.modpath.."/lib/floodfill.lua")
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dofile(wea.modpath.."/lib/overlay.lua")
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dofile(wea.modpath.."/lib/layers.lua")
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dofile(wea.modpath.."/lib/fillcaves.lua")
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dofile(wea.modpath.."/lib/ellipsoid.lua")
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dofile(wea.modpath.."/lib/torus.lua")
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dofile(wea.modpath.."/lib/line.lua")
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dofile(wea.modpath.."/lib/walls.lua")
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dofile(wea.modpath.."/lib/replacemix.lua")
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dofile(wea.modpath.."/lib/maze2d.lua")
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dofile(wea.modpath.."/lib/maze3d.lua")
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dofile(wea.modpath.."/lib/hollow.lua")
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dofile(wea.modpath.."/lib/scale_up.lua")
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dofile(wea.modpath.."/lib/scale_down.lua")
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dofile(wea.modpath.."/lib/scale.lua")
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dofile(wea.modpath.."/lib/conv/conv.lua")
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dofile(wea.modpath.."/lib/erode/erode.lua")
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dofile(wea.modpath.."/lib/noise/init.lua")
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dofile(worldeditadditions.modpath.."/lib/count.lua")
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dofile(wea.modpath.."/lib/count.lua")
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dofile(worldeditadditions.modpath.."/lib/bonemeal.lua")
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dofile(worldeditadditions.modpath.."/lib/forest.lua")
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dofile(wea.modpath.."/lib/bonemeal.lua")
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dofile(wea.modpath.."/lib/forest.lua")
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dofile(worldeditadditions.modpath.."/lib/ellipsoidapply.lua")
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dofile(worldeditadditions.modpath.."/lib/airapply.lua")
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dofile(wea.modpath.."/lib/ellipsoidapply.lua")
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dofile(wea.modpath.."/lib/airapply.lua")
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dofile(worldeditadditions.modpath.."/lib/subdivide.lua")
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dofile(worldeditadditions.modpath.."/lib/selection/stack.lua")
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dofile(worldeditadditions.modpath.."/lib/selection/cloud.lua")
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dofile(wea.modpath.."/lib/subdivide.lua")
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dofile(wea.modpath.."/lib/selection/stack.lua")
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dofile(wea.modpath.."/lib/selection/cloud.lua")
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200
worldeditadditions/utils/bit.lua
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200
worldeditadditions/utils/bit.lua
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@ -0,0 +1,200 @@
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-- ██████ ██ ████████
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-- ██ ██ ██ ██
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-- ██████ ██ ██
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-- ██ ██ ██ ██
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-- ██████ ██ ██
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-- LuaJIT bit polyfill
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-- @source https://github.com/Rabios/polyfill.lua/blob/master/polyfill.lua
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-- Adapted for Minetest by Starbeamrainbowlabs
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-- Note that this file is MIT licenced, and NOT MPL-2.0!
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-- @licence MIT
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-- Docs: http://bitop.luajit.org/api.html
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-- module: bit
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local bit = bit or {}
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bit.bits = 32
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bit.powtab = { 1 }
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for b = 1, bit.bits - 1 do
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bit.powtab[#bit.powtab + 1] = math.pow(2, b)
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end
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-- Functions
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-- bit.band
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if not bit.band then
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bit.band = function(a, b)
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local result = 0
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for x = 1, bit.bits do
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result = result + result
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if (a < 0) then
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if (b < 0) then
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result = result + 1
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end
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end
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a = a + a
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b = b + b
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end
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return result
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end
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end
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-- bit.bor
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if not bit.bor then
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bit.bor = function(a, b)
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local result = 0
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for x = 1, bit.bits do
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result = result + result
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if (a < 0) then
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result = result + 1
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elseif (b < 0) then
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result = result + 1
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end
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a = a + a
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b = b + b
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end
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return result
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end
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end
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-- bit.bnot
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if not bit.bnot then
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bit.bnot = function(x)
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return bit.bxor(x, math.pow((bit.bits or math.floor(math.log(x, 2))), 2) - 1)
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end
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end
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-- bit.lshift
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if not bit.lshift then
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bit.lshift = function(a, n)
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if (n > bit.bits) then
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a = 0
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else
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a = a * bit.powtab[n]
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end
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return a
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end
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end
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-- bit.rshift
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if not bit.rshift then
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bit.rshift = function(a, n)
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if (n > bit.bits) then
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a = 0
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elseif (n > 0) then
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if (a < 0) then
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a = a - bit.powtab[#bit.powtab]
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a = a / bit.powtab[n]
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a = a + bit.powtab[bit.bits - n]
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else
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a = a / bit.powtab[n]
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end
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end
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return a
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end
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end
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-- bit.arshift
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if not bit.arshift then
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bit.arshift = function(a, n)
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if (n >= bit.bits) then
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if (a < 0) then
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a = -1
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else
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a = 0
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end
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elseif (n > 0) then
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if (a < 0) then
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a = a - bit.powtab[#bit.powtab]
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a = a / bit.powtab[n]
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a = a - bit.powtab[bit.bits - n]
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else
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a = a / bit.powtab[n]
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end
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end
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return a
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end
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end
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-- bit.bxor
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if not bit.bxor then
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bit.bxor = function(a, b)
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local result = 0
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for x = 1, bit.bits, 1 do
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result = result + result
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if (a < 0) then
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if (b >= 0) then
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result = result + 1
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end
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elseif (b < 0) then
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result = result + 1
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end
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a = a + a
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b = b + b
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end
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return result
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end
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end
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-- bit.rol
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if not bit.rol then
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bit.rol = function(a, b)
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local bits = bit.band(b, bit.bits - 1)
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a = bit.band(a, 0xffffffff)
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a = bit.bor(bit.lshift(a, b), bit.rshift(a, ((bit.bits - 1) - b)))
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return bit.band(n, 0xffffffff)
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end
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end
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-- bit.ror
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if not bit.ror then
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bit.ror = function(a, b)
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return bit.rol(a, - b)
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end
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end
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-- bit.bswap
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if not bit.bswap then
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bit.bswap = function(n)
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local a = bit.band(n, 0xff)
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n = bit.rshift(n, 8)
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local b = bit.band(n, 0xff)
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n = bit.rshift(n, 8)
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local c = bit.band(n, 0xff)
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n = bit.rshift(n, 8)
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local d = bit.band(n, 0xff)
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return bit.lshift(bit.lshift(bit.lshift(a, 8) + b, 8) + c, 8) + d
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end
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end
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-- bit.tobit
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if not bit.tobit then
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bit.tobit = function(n)
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local MOD = 2^32
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n = n % MOD
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if (n >= 0x80000000) then
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n = n - MOD
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end
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return n
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end
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end
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-- bit.tohex
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if not bit.tohex then
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bit.tohex = function(x, n)
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n = n or 8
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local up
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if n <= 0 then
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if n == 0 then
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return ''
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end
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up = true
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n = -n
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end
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x = bit.band(x, 16^n - 1)
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return ('%0'..n..(up and 'X' or 'x')):format(x)
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end
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end
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return bit
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