commit b89e87e16f0b913883ada619f68804bcec6374bb Author: paramat Date: Sat Feb 15 09:50:29 2014 +0000 First commit diff --git a/README.txt b/README.txt new file mode 100644 index 0000000..cbd2748 --- /dev/null +++ b/README.txt @@ -0,0 +1,4 @@ +watershed 0.1.0 by paramat +For latest stable Minetest back to 0.4.8 +Depends default +Licenses: code WTFPL \ No newline at end of file diff --git a/depends.txt b/depends.txt new file mode 100644 index 0000000..4ad96d5 --- /dev/null +++ b/depends.txt @@ -0,0 +1 @@ +default diff --git a/init.lua b/init.lua new file mode 100644 index 0000000..2ab4e79 --- /dev/null +++ b/init.lua @@ -0,0 +1,233 @@ +-- watershed 0.1.0 by paramat +-- For latest stable Minetest and back to 0.4.8 +-- Depends default +-- License: code WTFPL + +-- Parameters + +local YMIN = 6000 +local YMAX = 8000 +local TERCEN = 7000 -- Terrain centre +local YWAT = 7256 -- Sea level +local TERSCA = 512 -- Vertical terrain scale +local TSTONE = 0.02 -- Density threshold for stone +local RINAMP = 0.5 -- Ridge noise amplitude +local RIDEXP = 1.2 -- Ridge exponent, controls sharpness of ridges +local TRIV = -0.08 -- Ridge density threshold for river water at sea level +local TEREXP = 0.8 -- Terrain exponent, controls shape of river canyons +local TERAMP = 0.5 -- Terrain amplitude relative to ridge + +-- 3D noise for rough terrain + +local np_terrough = { + offset = 0, + scale = 1, + spread = {x=414, y=414, z=414}, + seed = 5900033, + octaves = 6, + persist = 0.6 +} + +-- 3D noise for smooth terrain + +local np_terrsmoo = { + offset = 0, + scale = 1, + spread = {x=414, y=414, z=414}, + seed = 5900033, + octaves = 6, + persist = 0.4 +} + +-- 3D noise for ridge noise + +local np_terridge = { + offset = 0, + scale = 1, + spread = {x=1024, y=1024, z=1024}, + seed = -4747, + octaves = 3, + persist = 0.4 +} + +-- 2D noise for ranges and terrain blend + +local np_range = { + offset = 0, + scale = 1, + spread = {x=2048, y=2048, z=2048}, -- spread is still stated with xyz values + seed = -188900, + octaves = 2, + persist = 0.4 +} + +-- Stuff + +watershed = {} + +-- Nodes + +minetest.register_node("watershed:stone", { + description = "WS Stone", + tiles = {"default_stone.png"}, + groups = {cracky=3}, + sounds = default.node_sound_stone_defaults(), +}) + +minetest.register_node("watershed:water", { + description = "WS Water Source", + inventory_image = minetest.inventorycube("default_water.png"), + drawtype = "liquid", + tiles = { + {name="default_water_source_animated.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=2.0}} + }, + alpha = WATER_ALPHA, + paramtype = "light", + is_ground_content = false, + walkable = false, + pointable = false, + diggable = false, + buildable_to = true, + drop = "", + drowning = 1, + liquidtype = "source", + liquid_alternative_flowing = "watershed:waterflow", + liquid_alternative_source = "watershed:water", + liquid_viscosity = WATER_VISC, + liquid_renewable = false, + liquid_range = 1, + post_effect_color = {a=64, r=100, g=100, b=200}, + groups = {water=3, liquid=3, puts_out_fire=1}, +}) + +minetest.register_node("watershed:waterflow", { + description = "WS Flowing Water", + inventory_image = minetest.inventorycube("default_water.png"), + drawtype = "flowingliquid", + tiles = {"default_water.png"}, + special_tiles = { + { + image="default_water_flowing_animated.png", + backface_culling=false, + animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=0.8} + }, + { + image="default_water_flowing_animated.png", + backface_culling=true, + animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=0.8} + }, + }, + alpha = WATER_ALPHA, + paramtype = "light", + paramtype2 = "flowingliquid", + is_ground_content = false, + walkable = false, + pointable = false, + diggable = false, + buildable_to = true, + drop = "", + drowning = 1, + liquidtype = "flowing", + liquid_alternative_flowing = "watershed:waterflow", + liquid_alternative_source = "watershed:water", + liquid_viscosity = WATER_VISC, + liquid_renewable = false, + liquid_range = 1, + post_effect_color = {a=64, r=100, g=100, b=200}, + groups = {water=3, liquid=3, puts_out_fire=1, not_in_creative_inventory=1}, +}) + +-- On generated function + +minetest.register_on_generated(function(minp, maxp, seed) + if minp.y < YMIN or maxp.y > YMAX then + return + end + + local t1 = os.clock() + local x1 = maxp.x + local y1 = maxp.y + local z1 = maxp.z + local x0 = minp.x + local y0 = minp.y + local z0 = minp.z + + print ("[watershed] chunk minp ("..x0.." "..y0.." "..z0..")") + + local vm, emin, emax = minetest.get_mapgen_object("voxelmanip") + local area = VoxelArea:new{MinEdge=emin, MaxEdge=emax} + local data = vm:get_data() + + local c_air = minetest.get_content_id("air") + local c_wsstone = minetest.get_content_id("watershed:stone") + local c_sand = minetest.get_content_id("default:sand") + local c_wswater = minetest.get_content_id("watershed:water") + local c_water = minetest.get_content_id("default:water_source") + + local sidelen = x1 - x0 + 1 + local chulens = {x=sidelen, y=sidelen, z=sidelen} + local minposxyz = {x=x0, y=y0, z=z0} + local minposxz = {x=x0, y=z0} + + local nvals_terrough = minetest.get_perlin_map(np_terrough, chulens):get3dMap_flat(minposxyz) + local nvals_terrsmoo = minetest.get_perlin_map(np_terrsmoo, chulens):get3dMap_flat(minposxyz) + local nvals_terridge = minetest.get_perlin_map(np_terridge, chulens):get3dMap_flat(minposxyz) + + local nvals_range = minetest.get_perlin_map(np_range, chulens):get2dMap_flat(minposxz) + + local nixyz = 1 + local nixz = 1 + local stable = {} + for z = z0, z1 do -- for each xy plane progressing northwards + for x = x0, x1 do + local si = x - x0 + 1 + local nodename = minetest.get_node({x=x,y=y0-1,z=z}).name + if nodename == "air" + or nodename == "default:water_source" then + stable[si] = 0 + else + stable[si] = 2 + end + end + for y = y0, y1 do -- for each x row progressing upwards + local vi = area:index(x0, y, z) + for x = x0, x1 do -- for each node do + local si = x - x0 + 1 + local ridge = 1 - math.abs(nvals_range[nixz]) ^ RIDEXP + nvals_terridge[nixyz] * RINAMP + local grad = (TERCEN - y) / TERSCA + local denridge = ridge + grad + local terblen = math.max((1 - math.abs(nvals_range[nixz])), 0) + local triv = TRIV * (1 - terblen) + local density = ridge + grad + + math.abs(nvals_terrough[nixyz] * terblen + nvals_terrsmoo[nixyz] * (1 - terblen)) ^ TEREXP * TERAMP + if density >= TSTONE then + data[vi] = c_wsstone + stable[si] = stable[si] + 1 + elseif density >= 0 and density < TSTONE and stable[si] >= 2 then + data[vi] = c_sand + elseif y <= YWAT then -- sea level water + data[vi] = c_water + stable[si] = 0 + elseif denridge >= triv then -- river water + data[vi] = c_wswater + stable[si] = 0 + else + data[vi] = c_air + stable[si] = 0 + end + nixyz = nixyz + 1 -- increment 3D noise index + nixz = nixz + 1 -- increment 2D noise index + vi = vi + 1 + end + nixz = nixz - 80 -- rewind 2D noise index by 80 nodes for next x row above + end + nixz = nixz + 80 -- fast-forward 2D noise index by 80 nodes for next northward xy plane + end + + vm:set_data(data) + vm:set_lighting({day=0, night=0}) + vm:calc_lighting() + vm:write_to_map(data) + local chugent = math.ceil((os.clock() - t1) * 1000) + print ("[noise23] "..chugent.." ms") +end) \ No newline at end of file diff --git a/license.txt b/license.txt new file mode 100644 index 0000000..c73f8ae --- /dev/null +++ b/license.txt @@ -0,0 +1,14 @@ + DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE + Version 2, December 2004 + + Copyright (C) 2004 Sam Hocevar + + Everyone is permitted to copy and distribute verbatim or modified + copies of this license document, and changing it is allowed as long + as the name is changed. + + DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. You just DO WHAT THE FUCK YOU WANT TO. +