247 lines
6.5 KiB
Lua
247 lines
6.5 KiB
Lua
-- riverdev 0.1.0 by paramat
|
|
-- For latest stable Minetest and back to 0.4.8
|
|
-- Depends default
|
|
-- License: code WTFPL
|
|
|
|
-- Parameters
|
|
|
|
local YMIN = -33000
|
|
local YMAX = 33000
|
|
local YWATER = 1
|
|
local TERZERO = 32 -- Terrain zero level
|
|
local TERSCAL = 128 -- Terrain scale in nodes
|
|
local TSTONE = 0.04 -- Density threshold for stone, depth of stone below surface
|
|
local BASAMP = 0.4
|
|
local MIDAMP = 0.4
|
|
local TERAMP = 0.4
|
|
local TRIVER = -0.04
|
|
local TSTREAM = -0.02
|
|
|
|
-- 3D noise for terrain
|
|
|
|
local np_terrain = {
|
|
offset = 0,
|
|
scale = 1,
|
|
spread = {x=384, y=384, z=384}, -- squashed perlin noise, y spread is half
|
|
seed = 5900033,
|
|
octaves = 5,
|
|
persist = 0.63
|
|
}
|
|
|
|
-- 2D noise for mid terrain
|
|
|
|
local np_mid = {
|
|
offset = 0,
|
|
scale = 1,
|
|
spread = {x=768, y=768, z=768}, -- spread is still stated with xyz values
|
|
seed = 85546,
|
|
octaves = 4,
|
|
persist = 0.5
|
|
}
|
|
|
|
-- 2D noise for base terrain
|
|
|
|
local np_base = {
|
|
offset = 0,
|
|
scale = 1,
|
|
spread = {x=1536, y=1536, z=1536}, -- spread is still stated with xyz values
|
|
seed = -990054,
|
|
octaves = 3,
|
|
persist = 0.4
|
|
}
|
|
|
|
-- Stuff
|
|
|
|
riverdev = {}
|
|
|
|
minetest.register_on_mapgen_init(function(mgparams)
|
|
minetest.set_mapgen_params({mgname="singlenode"})
|
|
end)
|
|
|
|
-- Nodes
|
|
|
|
minetest.register_node("riverdev:stone", {
|
|
description = "Stone",
|
|
tiles = {"default_stone.png"},
|
|
is_ground_content = false,
|
|
groups = {cracky=3},
|
|
drop = "default:cobble",
|
|
sounds = default.node_sound_stone_defaults(),
|
|
})
|
|
|
|
minetest.register_node("riverdev:freshwater", {
|
|
description = "Fresh Water Source",
|
|
inventory_image = minetest.inventorycube("riverdev_freshwater.png"),
|
|
drawtype = "liquid",
|
|
tiles = {
|
|
{
|
|
name="riverdev_freshwateranim.png",
|
|
animation={type="vertical_frames",
|
|
aspect_w=16, aspect_h=16, length=2.0}
|
|
}
|
|
},
|
|
special_tiles = {
|
|
{
|
|
name="riverdev_freshwateranim.png",
|
|
animation={type="vertical_frames",
|
|
aspect_w=16, aspect_h=16, length=2.0},
|
|
backface_culling = false,
|
|
}
|
|
},
|
|
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 = "riverdev:freshwaterflow",
|
|
liquid_alternative_source = "riverdev:freshwater",
|
|
liquid_viscosity = WATER_VISC,
|
|
liquid_renewable = false,
|
|
liquid_range = 0,
|
|
post_effect_color = {a=64, r=100, g=150, b=200},
|
|
groups = {water=3, liquid=3, puts_out_fire=1},
|
|
})
|
|
|
|
minetest.register_node("riverdev:freshwaterflow", {
|
|
description = "Fresh Flowing Water",
|
|
inventory_image = minetest.inventorycube("riverdev_freshwater.png"),
|
|
drawtype = "flowingliquid",
|
|
tiles = {"riverdev_freshwater.png"},
|
|
special_tiles = {
|
|
{
|
|
image="riverdev_freshwaterflowanim.png",
|
|
backface_culling=false,
|
|
animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=0.8}
|
|
},
|
|
{
|
|
image="riverdev_freshwaterflowanim.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 = "riverdev:freshwaterflow",
|
|
liquid_alternative_source = "riverdev:freshwater",
|
|
liquid_viscosity = WATER_VISC,
|
|
liquid_renewable = false,
|
|
liquid_range = 0,
|
|
post_effect_color = {a=64, r=100, g=150, 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 ("[riverdev] 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_water = minetest.get_content_id("default:water_source")
|
|
local c_sand = minetest.get_content_id("default:sand")
|
|
local c_stone = minetest.get_content_id("riverdev:stone")
|
|
local c_freshwater = minetest.get_content_id("riverdev:freshwater")
|
|
|
|
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_terrain = minetest.get_perlin_map(np_terrain, chulens):get3dMap_flat(minposxyz)
|
|
|
|
local nvals_mid = minetest.get_perlin_map(np_mid, chulens):get2dMap_flat(minposxz)
|
|
local nvals_base = minetest.get_perlin_map(np_base, chulens):get2dMap_flat(minposxz)
|
|
|
|
local nixyz = 1 -- 3D noise index
|
|
local nixz = 1 -- 2D noise index
|
|
local stable = {}
|
|
for z = z0, z1 do
|
|
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"
|
|
or nodename == "riverdev:freshwater"
|
|
or nodename == "riverdev:freshwaterflow" then
|
|
stable[si] = 0
|
|
else
|
|
stable[si] = 2
|
|
end
|
|
end
|
|
for y = y0, y1 do
|
|
local vi = area:index(x0, y, z)
|
|
for x = x0, x1 do
|
|
local si = x - x0 + 1
|
|
local n_terrain = nvals_terrain[nixyz]
|
|
local n_mid = nvals_mid[nixz]
|
|
local n_base = nvals_base[nixz]
|
|
|
|
local grad = (TERZERO - y) / TERSCAL
|
|
local densitybas = n_base * BASAMP + grad
|
|
local densitymid = math.abs(n_mid) * MIDAMP + densitybas
|
|
local density = math.abs(n_terrain) * TERAMP * math.abs(n_mid) + densitymid
|
|
|
|
if density >= TSTONE then -- stone
|
|
data[vi] = c_stone
|
|
stable[si] = stable[si] + 1
|
|
elseif density >= 0 and density < TSTONE and stable[si] >= 2 then -- fine materials
|
|
data[vi] = c_sand
|
|
elseif y <= YWATER and density < TSTONE then -- sea water
|
|
data[vi] = c_water
|
|
stable[si] = 0
|
|
elseif densitybas >= TRIVER then -- river water
|
|
data[vi] = c_freshwater
|
|
stable[si] = 0
|
|
elseif densitymid >= TSTREAM then -- stream water
|
|
data[vi] = c_freshwater
|
|
stable[si] = 0
|
|
else -- 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 ("[riverdev] "..chugent.." ms")
|
|
end) |