1
0
mirror of https://github.com/sys4-fr/server-nalc.git synced 2024-11-18 16:20:38 +01:00
server-nalc/mods/riesenpilz/mapgen.lua
LeMagnesium ee352dbc60 [riesenpilz] Update
- For #352
2015-12-31 13:43:25 +01:00

306 lines
8.1 KiB
Lua
Executable File

local minetest = minetest --Should make things a bit faster.
local c
local function define_contents()
c = {
ignore = minetest.get_content_id("ignore"),
air = minetest.get_content_id("air"),
stone = minetest.get_content_id("default:stone"),
dirt = minetest.get_content_id("default:dirt"),
desert_sand = minetest.get_content_id("default:desert_sand"),
dry_shrub = minetest.get_content_id("default:dry_shrub"),
ground = minetest.get_content_id("riesenpilz:ground"),
riesenpilz_brown = minetest.get_content_id("riesenpilz:brown"),
riesenpilz_red = minetest.get_content_id("riesenpilz:red"),
riesenpilz_fly_agaric = minetest.get_content_id("riesenpilz:fly_agaric"),
riesenpilz_lavashroom = minetest.get_content_id("riesenpilz:lavashroom"),
riesenpilz_glowshroom = minetest.get_content_id("riesenpilz:glowshroom"),
riesenpilz_parasol = minetest.get_content_id("riesenpilz:parasol"),
GROUND = {},
TREE_STUFF = {
minetest.get_content_id("default:tree"),
minetest.get_content_id("default:leaves"),
minetest.get_content_id("default:apple"),
minetest.get_content_id("default:jungletree"),
minetest.get_content_id("default:jungleleaves"),
minetest.get_content_id("default:junglegrass"),
},
USUAL_STUFF = {
minetest.get_content_id("default:cactus"),
minetest.get_content_id("default:papyrus"),
},
}
for name,data in pairs(minetest.registered_nodes) do
local groups = data.groups
if groups then
if groups.crumbly == 3
or groups.soil == 1 then
table.insert(c.GROUND, minetest.get_content_id(name))
end
end
end
end
local function find_ground(a,list)
for i = 1,#list do
if a == list[i] then
return true
end
end
return false
end
local data, area
function riesenpilz_circle(nam, pos, radius, chance)
for _,p in pairs(vector.circle(radius)) do
if pr:next(1,chance) == 1 then
local p = vector.add(pos, p)
local p_p = area:indexp(p)
if (data[p_p] == c.air or data[p_p] == c.ignore)
and find_ground(data[area:index(p.x, p.y-1, p.z)], c.GROUND) then
data[p_p] = nam
end
end
end
end
local function say_info(info)
local info = "[riesenpilz] "..info
print(info)
minetest.chat_send_all(info)
end
-- perlin noise "hills" are not peaks but looking like sinus curve
local function upper_rarity(rarity)
return math.sign(rarity)*math.sin(math.abs(rarity)*math.pi/2)
end
local rarity = riesenpilz.mapgen_rarity
local riesenpilz_size = riesenpilz.mapgen_size
local nosmooth_rarity = 1-rarity/50
local perlin_scale = riesenpilz_size*100/rarity
local smooth_rarity_max, smooth_rarity_min, smooth_rarity_dif
local smooth = riesenpilz.smooth
if smooth then
local smooth_trans_size = riesenpilz.smooth_trans_size
smooth_rarity_max = upper_rarity(nosmooth_rarity+smooth_trans_size*2/perlin_scale)
smooth_rarity_min = upper_rarity(nosmooth_rarity-smooth_trans_size/perlin_scale)
smooth_rarity_dif = smooth_rarity_max-smooth_rarity_min
end
nosmooth_rarity = upper_rarity(nosmooth_rarity)
--local USUAL_STUFF = {"default:leaves","default:apple","default:tree","default:cactus","default:papyrus"}
local contents_defined
minetest.register_on_generated(function(minp, maxp, seed)
if maxp.y <= 0
or minp.y >= 150 then --avoid generation in the sky
return
end
local x0,z0,x1,z1 = minp.x,minp.z,maxp.x,maxp.z -- Assume X and Z lengths are equal
local perlin1 = minetest.get_perlin(51,3, 0.5, perlin_scale) --Get map specific perlin
if not riesenpilz.always_generate then
local biome_allowed
for x = x0, x1, 16 do
for z = z0, z1, 16 do
if perlin1:get2d({x=x, y=z}) > nosmooth_rarity then
biome_allowed = true
break
end
end
if biome_allowed then
break
end
end
if not biome_allowed then
return
end
end
local t1 = os.clock()
riesenpilz.inform("tries to generate a giant mushroom biome at: x=["..minp.x.."; "..maxp.x.."]; y=["..minp.y.."; "..maxp.y.."]; z=["..minp.z.."; "..maxp.z.."]", 2)
if not contents_defined then
define_contents()
contents_defined = true
end
local divs = (maxp.x-minp.x);
local num = 1
local tab = {}
pr = PseudoRandom(seed+68)
local heightmap = minetest.get_mapgen_object("heightmap")
local hmi = 1
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
data = vm:get_data()
area = VoxelArea:new{MinEdge=emin, MaxEdge=emax}
for p_pos in area:iterp(minp, maxp) do --remove tree stuff
local d_p_pos = data[p_pos]
for _,nam in ipairs(c.TREE_STUFF) do
if d_p_pos == nam then
data[p_pos] = c.air
break
end
end
end
for j=0,divs do
for i=0,divs do
local x,z = x0+i,z0+j
--Check if we are in a "riesenpilz biome"
local in_biome = false
local test = perlin1:get2d({x=x, y=z})
--smooth mapgen
if riesenpilz.always_generate then
in_biome = true
elseif smooth then
if test >= smooth_rarity_max
or (
test > smooth_rarity_min
and pr:next(1, 1000) <= ((test-smooth_rarity_min)/smooth_rarity_dif)*1000
) then
in_biome = true
end
elseif test > nosmooth_rarity then
in_biome = true
end
if in_biome then
local ymin = math.max(heightmap[hmi]-5, minp.y) -- -1
-- skip the air part
local ground
for y = math.min(heightmap[hmi]+20, maxp.y),ymin,-1 do
if data[area:index(x, y, z)] ~= c.air then
ground = y
break
end
end
local ground_y
if ground then
for y = ground,ymin,-1 do
local p_pos = area:index(x, y, z)
local d_p_pos = data[p_pos]
for _,nam in pairs(c.USUAL_STUFF) do --remove usual stuff
if d_p_pos == nam then
data[p_pos] = c.air
p_pos = nil
break
end
end
if p_pos --else search ground_y
and find_ground(d_p_pos, c.GROUND) then
ground_y = y
break
end
end
end
if ground_y then
data[area:index(x, ground_y, z)] = c.ground
for i = -1,-5,-1 do
local p_pos = area:index(x, ground_y+i, z)
if data[p_pos] == c.desert_sand then
data[p_pos] = c.dirt
else
break
end
end
local bigtype
local boden = {x=x,y=ground_y+1,z=z}
if pr:next(1,15) == 1 then
data[area:index(x, ground_y+1, z)] = c.dry_shrub
elseif pr:next(1,80) == 1 then
riesenpilz_circle(c.riesenpilz_brown, boden, pr:next(3,4), 3)
elseif pr:next(1,85) == 1 then
riesenpilz_circle(c.riesenpilz_parasol, boden, pr:next(3,5), 3)
elseif pr:next(1,90) == 1 then
riesenpilz_circle(c.riesenpilz_red, boden, pr:next(4,5), 3)
elseif pr:next(1,100) == 1 then
riesenpilz_circle(c.riesenpilz_fly_agaric, boden, 4, 3)
elseif pr:next(1,340) == 10 then
bigtype = 2
elseif pr:next(1,380) == 1 then
bigtype = 1
elseif pr:next(1,390) == 20 then
bigtype = 3
elseif pr:next(1,800) == 7 then
bigtype = 5
elseif pr:next(1,4000) == 1 then
riesenpilz_circle(c.riesenpilz_lavashroom, boden, pr:next(5,6), 3)
elseif pr:next(1,5000) == 1 then
riesenpilz_circle(c.riesenpilz_glowshroom, boden, 3, 3)
elseif pr:next(1,6000) == 2 then
if pr:next(1,200) == 15 then
bigtype = 4
elseif pr:next(1,2000) == 54 then
bigtype = 6
end
end
if bigtype then
tab[num] = {bigtype, boden}
num = num+1
end
end
end
hmi = hmi+1
end
end
riesenpilz.inform("ground finished", 2, t1)
local param2s
if num ~= 1 then
local t2 = os.clock()
for _,v in pairs(tab) do
local p = v[2]
local m = v[1]
if m == 1 then
riesenpilz.red(p, data, area)
elseif m == 2 then
riesenpilz.brown(p, data, area)
elseif m == 3 then
if not param2s then
param2s = vm:get_param2_data()
end
riesenpilz.fly_agaric(p, data, area, param2s)
elseif m == 4 then
riesenpilz.lavashroom(p, data, area)
elseif m == 5 then
riesenpilz.parasol(p, data, area)
elseif m == 6 then
riesenpilz.red45(p, data, area)
end
end
riesenpilz.inform("giant shrooms generated", 2, t2)
end
local t2 = os.clock()
vm:set_data(data)
if param2s then
vm:set_param2_data(param2s)
end
vm:set_lighting({day=0, night=0})
vm:calc_lighting()
vm:write_to_map()
data = nil
area = nil
riesenpilz.inform("data set", 2, t2)
riesenpilz.inform("done", 1, t1)
end)