diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/lua_api.txt | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/doc/lua_api.txt b/doc/lua_api.txt index 3284baedb..85b332173 100644 --- a/doc/lua_api.txt +++ b/doc/lua_api.txt @@ -524,11 +524,25 @@ Noise Parameters, or commonly called NoiseParams, define the properties of perli some other flags. - eased Maps noise gradient values onto a quintic S-curve before performing interpolation. - This results in smooth, rolling noise. Disable this for sharp-looking noise. + This results in smooth, rolling noise. Disable this ("noeased") for sharp-looking noise. If no flags are specified (or defaults is), 2D noise is eased and 3D noise is not eased. - absvalue Accumulates the absolute value of each noise gradient result. +Noise parameters format example for 2D or 3D perlin noise or perlin noise maps: + np_terrain = { + offset = 0, + scale = 1, + spread = {x=500, y=500, z=500}, + seed = 571347, + octaves = 5, + persist = 0.63, + lacunarity = 2.0, + flags = "defaults, absvalue" + } + ^ A single noise parameter table can be used to get 2D or 3D noise, + when getting 2D noise spread.z is ignored. + Ore types --------------- @@ -2165,6 +2179,10 @@ methods: PerlinNoiseMap: A fast, bulk perlin noise generator - Can be created via PerlinNoiseMap(noiseparams, size) - Also minetest.get_perlin_map(noiseparams, size) +- Format of 'size' for 3D perlin maps: {x=dimx, y=dimy, z=dimz} +- Format of 'size' for 2D perlin maps: {x=dimx, y=dimy} + ^ where dimx, dimy, dimz are the array dimensions + ^ for 3D perlin maps the z component of 'size' must be larger than 1 otherwise 'nil' is returned methods: - get2dMap(pos) -> <size.x>X<size.y> 2d array of 2d noise values starting at pos={x=,y=} - get3dMap(pos) -> <size.x>X<size.y>X<size.z> 3d array of 3d noise values starting at pos={x=,y=,z=} @@ -2859,15 +2877,3 @@ ParticleSpawner definition (add_particlespawner) ^ Playername is optional, if specified spawns particle only on the player's client } -NoiseParams definition (PerlinNoiseMap) -{ - offset = 0, - scale = 0, - spread = 0, - seed = 0, - octaves = 0, - ^ A higher value will result in more details, this means more operations - persist = 0, - eased = false - ^ Whether it should create curves in 3D perlin maps -} |