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VorTechnix
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41
README.md
41
README.md
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@ -5,6 +5,8 @@
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If you can dream of it, it probably belongs here!
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**Important News: The `master` branch has been renamed to `main`, to follow the new standard across the Git ecosystem. If you've installed _WorldEditAadditions_ through git, you will need to re-clone the repository.**
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_(Do you have a cool build that you used WorldEditAdditions to build? [Get in touch](https://github.com/sbrl/Minetest-WorldEditAdditions/issues/new) and I'll feature your screenshot here!)_
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@ -57,10 +59,12 @@ The detailed explanations have moved! Check them out [here](https://github.com/s
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- [`//count`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#count)
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### Selection
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- [`//srect [<axis1> [<axis2>]] <length>`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#srect-axis1-axis2-length)
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- [`//sstack`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#sstack)
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- [`//spush`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#spush)
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- [`//spop`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#spop)
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- [`//scol [<axis1> ] <length>`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#scol-axis1--length)
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- [`//srect [<axis1> [<axis2>]] <length>`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#srect-axis1-axis2-length)
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- [`//scube [<axis1> [<axis2> [<axis3>]]] <length>`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#scube-axis1-axis2-axis3-length)
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- [`//sstack`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#sstack)
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- [`//spush`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#spush)
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- [`//spop`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#spop)
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### Meta
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- [`//multi <command_a> <command_b> ....`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#multi-command_a-command_b-command_c-)
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@ -77,6 +81,33 @@ The detailed explanations have moved! Check them out [here](https://github.com/s
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- [`//farwand skip_liquid (true|false) | maxdist <number>`](https://github.com/sbrl/Minetest-WorldEditAdditions/blob/master/Chat-Command-Reference.md#farwand-skip_liquid-truefalse--maxdist-number)
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## Installation
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You can install _WorldEditAadditions_ in multiple ways:
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### Through ContentDB
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WorldEditAdditions is on ContentDB here: <https://content.minetest.net/packages/Starbeamrainbowlabs/worldeditadditions/>.
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### Through the latest release
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You can get a copy of WorldEditAdditions by downloading the source code for the [latest release](https://github.com/sbrl/Minetest-WorldEditAdditions/releases/latest), but this is not recommended because it takes additional effort to update to the latest version.
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### Through Git
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You can also clone this git repository. Note that the `main` branch is not considered to be stable at all times - though it shouldn't crash. It is recommended that you checkout a release to ensure stability. Do that like so:
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```bash
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# First, clone the repository
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git clone https://github.com/sbrl/Minetest-WorldEditAdditions.git WorldEditAdditions
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cd WorldEditAdditions
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# Then, checkout the latest release on Linux:
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git checkout "$(git describe --tags --abbrev=0)";
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```
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Windows users, you'll need to check the [releases page](https://github.com/sbrl/Minetest-WorldEditAdditions/releases) and find the name of the latest release, then do this instead of the `git checkout` above:
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```bash
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git checkout TAG_NAME_HERE
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```
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## Troubleshooting
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If you're experiencing issues with this mod, try checking this FAQ before opening an issue.
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@ -98,6 +129,8 @@ Contributions are welcome! Please state in your pull request(s) that you release
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Please also make sure that the logic for every new command has it's own file. For example, the logic for `//floodfill` goes in `worldeditadditions/floodfill.lua`, the logic for `//overlay` goes in `worldeditadditions/overlay.lua`, etc.
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I, Starbeamrainbowlabs (@sbrl), have the ultimate final say.
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## WorldEditAdditions around the web
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Are you using WorldEditAdditions for a project? Open an issue and I'll add your project to the below list!
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@ -1,3 +0,0 @@
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function worldeditadditions.noise.engine_perlin_2d(x, y)
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end
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100
worldeditadditions/lib/noise/engines/perlin.lua
Normal file
100
worldeditadditions/lib/noise/engines/perlin.lua
Normal file
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@ -0,0 +1,100 @@
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local wea = worldeditadditions
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-- original code by Ken Perlin: http://mrl.nyu.edu/~perlin/noise/
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-- Port from this StackOverflow answer: https://stackoverflow.com/a/33425812/1460422
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local function BitAND(a, b) --Bitwise and
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local p, c = 1, 0
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while a > 0 and b > 0 do
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local ra, rb = a%2, b%2
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if ra + rb > 1 then c = c + p end
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a, b, p = (a - ra) / 2, (b - rb) / 2, p * 2
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end
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return c
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end
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local function fade(t)
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return t * t * t * (t * (t * 6 - 15) + 10)
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end
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local function lerp(t, a, b)
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return a + t * (b - a)
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end
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local function grad(hash, x, y, z)
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local h = BitAND(hash, 15)
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local u = h < 8 and x or y
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local v = h < 4 and y or ((h == 12 or h == 14) and x or z)
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return ((h and 1) == 0 and u or - u) + ((h and 2) == 0 and v or - v)
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end
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wea.noise.perlin = {}
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wea.noise.perlin.p = {}
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wea.noise.perlin.permutation = {
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151, 160, 137, 91, 90, 15, 131, 13, 201, 95, 96, 53, 194, 233, 7, 225, 140,
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36, 103, 30, 69, 142, 8, 99, 37, 240, 21, 10, 23, 190, 6, 148, 247, 120,
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234, 75, 0, 26, 197, 62, 94, 252, 219, 203, 117, 35, 11, 32, 57, 177, 33,
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88, 237, 149, 56, 87, 174, 20, 125, 136, 171, 168, 68, 175, 74, 165, 71,
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134, 139, 48, 27, 166, 77, 146, 158, 231, 83, 111, 229, 122, 60, 211, 133,
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230, 220, 105, 92, 41, 55, 46, 245, 40, 244, 102, 143, 54, 65, 25, 63, 161,
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1, 216, 80, 73, 209, 76, 132, 187, 208, 89, 18, 169, 200, 196, 135, 130,
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116, 188, 159, 86, 164, 100, 109, 198, 173, 186, 3, 64, 52, 217, 226, 250,
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124, 123, 5, 202, 38, 147, 118, 126, 255, 82, 85, 212, 207, 206, 59, 227,
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47, 16, 58, 17, 182, 189, 28, 42, 223, 183, 170, 213, 119, 248, 152, 2, 44,
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154, 163, 70, 221, 153, 101, 155, 167, 43, 172, 9, 129, 22, 39, 253, 19,
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98, 108, 110, 79, 113, 224, 232, 178, 185, 112, 104, 218, 246, 97, 228,
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251, 34, 242, 193, 238, 210, 144, 12, 191, 179, 162, 241, 81, 51, 145, 235,
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249, 14, 239, 107, 49, 192, 214, 31, 181, 199, 106, 157, 184, 84, 204, 176,
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115, 121, 50, 45, 127, 4, 150, 254, 138, 236, 205, 93, 222, 114, 67, 29,
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24, 72, 243, 141, 128, 195, 78, 66, 215, 61, 156, 180
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}
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wea.noise.perlin.size = 256
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wea.noise.perlin.gx = {}
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wea.noise.perlin.gy = {}
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wea.noise.perlin.randMax = 256
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--- Creates a new perlin instance.
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-- @return perlin A new perlin instance.
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function wea.noise.perlin.new()
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local instance = {}
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setmetatable(instance, wea.noise.perlin)
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instance:load()
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return instance
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end
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function wea.noise.perlin:load()
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for i = 1, self.size do
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self.p[i] = self.permutation[i]
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self.p[255 + i] = self.p[i]
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end
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end
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function wea.noise.perlin:noise( x, y, z )
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local X = BitAND(math.floor(x), 255) + 1
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local Y = BitAND(math.floor(y), 255) + 1
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local Z = BitAND(math.floor(z), 255) + 1
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x = x - math.floor(x)
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y = y - math.floor(y)
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z = z - math.floor(z)
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local u = fade(x)
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local v = fade(y)
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local w = fade(z)
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local A = self.p[X] + Y
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local AA = self.p[A] + Z
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local AB = self.p[A + 1] + Z
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local B = self.p[X + 1] + Y
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local BA = self.p[B] + Z
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local BB = self.p[B + 1] + Z
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return lerp(w, lerp(v, lerp(u, grad(self.p[AA ], x, y, z ),
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grad(self.p[BA ], x - 1, y, z )),
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lerp(u, grad(self.p[AB ], x, y - 1, z ),
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grad(self.p[BB ], x - 1, y - 1, z ))),
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lerp(v, lerp(u, grad(self.p[AA + 1], x, y, z - 1),
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grad(self.p[BA + 1], x - 1, y, z - 1)),
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lerp(u, grad(self.p[AB + 1], x, y - 1, z - 1),
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grad(self.p[BB + 1], x - 1, y - 1, z - 1))))
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end
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@ -4,6 +4,33 @@
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-- ██ ████ ██ ███████ █████ █████ █████ ██ ██
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-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
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-- ██ ██ ██ ██ ██ ██ ███████ ███████ ███████ ██████
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function worldeditadditions.noise.make_2d(size, noise_func)
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-- TODO: Follow https://www.redblobgames.com/maps/terrain-from-noise/
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-- Generate a flat array of 2D noise.
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-- Written with help from https://www.redblobgames.com/maps/terrain-from-noise/
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-- @param size Vector An x/y vector representing the size of the noise area to generate.
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-- @param params table|table<table> A table of noise params to use to generate the noise. Values that aren't specified are filled in automatically. If a table of tables is specified, it is interpreted as multiple octaves of noise to apply in sequence.
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function worldeditadditions.noise.make_2d(size, params)
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params = worldeditadditions.noise.params_apply_default(params)
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local result = {}
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local generator;
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if params.algorithm == "perlin" then
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generator = worldeditadditions.noise.perlin.new()
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else -- We don't have any other generators just yet
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return false, "Error: Unknown noise algorithm '"..params.."'."
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end
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for x=params.offset.x, params.offset.x+size.x do
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for y=params.offset.y, params.offset.y+size.y do
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local result = 0
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for i,params_octave in ipairs(params) do
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result = result + (generator:noise(x * scale.x, y * scale.y, 0) ^ params.exponent) * params.multiply + params.add
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end
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result[y*size.x + x] = result
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end
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end
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return result
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end
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worldeditadditions.noise = {}
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dofile(worldeditadditions.modpath.."/lib/noise/alg_perlin.lua")
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dofile(worldeditadditions.modpath.."/lib/noise/noise_params.lua")
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dofile(worldeditadditions.modpath.."/lib/noise/make_2d.lua")
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dofile(worldeditadditions.modpath.."/lib/noise/engines/perlin.lua")
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37
worldeditadditions/lib/noise/noise_params.lua
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37
worldeditadditions/lib/noise/noise_params.lua
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--- Makes sure that the default settings are all present in the given params table.
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-- This way not all params have to be specified by the user.
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-- @param params table The params table generated from the user's input.
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-- @return table A NEW table with all the missing properties filled in with the default values.
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function worldeditadditions.noise.params_apply_default(params)
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local params_default = {
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algorithm = "perlin",
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-- Zooms in and out
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scale = vector.new(1, 1, 1),
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-- Offset the generated noise by this vector.
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offset = vector.new(0, 0, 0),
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-- Apply this exponent to the resulting noise value
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exponent = 1,
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-- Multiply the resulting noise value by this number. Changes the "strength" of the noise
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multiply = 1,
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-- Add this number to the resulting noise value
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add = 0
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-- The seed to generate the noise with. nil = randomly chosen
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-- The perlin generator isn't currently seedable :-/
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-- seed = nil
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}
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if not params[1] then params = { params } end
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-- If params[1] is thing, this is a list of params
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-- This might be a thing if we're dealingw ith multiple octaves
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for i,params_el in ipairs(params) do
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local default_copy = worldeditadditions.shallowcopy(params_default)
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worldeditadditions.table_apply(
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params_el,
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default_copy
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)
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params[i] = default_copy
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end
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return params
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end
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