533 lines
14 KiB
Lua
533 lines
14 KiB
Lua
--nothing--
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local S = minetest.get_translator("nc_sky_isgen")
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local grass = "nc_terrain:dirt_with_grass"
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local dirt = "nc_terrain:dirt"
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local tree = "nc_tree:eggcorn_planted"
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local stone = "nc_terrain:stone"
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local queue = {}
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local cooldown = 120
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local cooldowns = {}
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local function maxval(octaves,persistence,scale)
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local m = 1
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local poc = 1
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if octaves > 1 then
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for n=2,octaves do
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poc = poc*persistence
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m=m+poc
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end
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end
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return scale/m
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end
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local function dist(x1,y1,z1, x2,y2,z2)
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local x,y,z = x2-x1, y2-y1, z2-z1
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return (x*x+y*y+z*z)^0.5
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end
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local function cosify(x)
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return 1-math.cos(x*math.pi/2)
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end
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local pers = 0.9
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local oct = 4
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local noise = PerlinNoise{
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scale = maxval(oct,pers,32),
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spread = {x=64,y=64,z=64},
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seed=1297,
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octaves = oct,
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persistence = pers,
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lacunarity = 2,
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flags = "eased"
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}
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local function island(pos,r)
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local x,y,z = pos.x,pos.y,pos.z
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minetest.emerge_area({x=x-r,y=y-r,z=z-r},{x=x+r,y=y+r,z=z+r},function(bp,act,crem)
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if crem > 0 then
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return
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end
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local n = 0
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local c = 0
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local cm = (r*2+1)^3
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local function geto(x1,y1,z1,n)
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local r1 = 48+n*2-1
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local dista = dist(0,0,0,x1,y1*3,z1)
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local m = math.max(0,1-dista/r1)
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local r2 = -r1
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if y1 <= 0 and y1 >= r2 then
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local r3 = (1-math.sin(y1/r2*math.pi/2))*r1
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local distb = dist(0,y1,0,x1,y1,z1)
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local m2 = math.max(0,1-distb/r3)
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m = math.max(m2,m)
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end
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return cosify(m)
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end
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local grasses = {}
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local stones = {}
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for x=-r,r do
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for z=-r,r do
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for y=-r,r do
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local xx,yy,zz = pos.x+x,pos.y+y,pos.z+z
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local ppos = {x=xx,y=yy,z=zz}
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local o,o2 = geto(x,y,z,noise:get_3d(ppos)),geto(x,y+1,z,noise:get_3d({x=xx,y=yy+1,z=zz}))
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local oc = (o > 0.4)
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local oc2 = o2 > 0.4
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local og = (o > 0.5) and o2 > 0.4
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if oc then
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n=n+1
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local nam = dirt
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if not og and not oc2 then
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nam = grass
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table.insert(grasses,ppos)
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end
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if og then
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nam = stone
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table.insert(stones,ppos)
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end
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minetest.set_node(ppos,{name=nam})
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else
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n=n+0.01
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end
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if n > 1000 then
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n=0
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--coroutine.yield()
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end
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end
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end
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end
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for n=1,24 do
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if #stones > 1 then
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local n = math.random(1,#stones)
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local v = table.remove(stones,n)
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minetest.set_node(v,{name="nc_crystal:ore"})
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end
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if #stones > 1 then
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local n = math.random(1,#stones)
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local v = table.remove(stones,n)
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minetest.set_node(v,{name="nc_lux:stone"})
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end
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end
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for n=1,8 do
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if #grasses > 1 then
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local n = math.random(1,#grasses)
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local v = table.remove(grasses,n)
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minetest.set_node(v,{name=tree})
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local meta = minetest.get_meta(v)
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meta:set_float("growth",5000)
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end
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end
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end)
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end
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local f,abs = math.floor, math.abs
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local function spawn_island(name,pos)
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local ref = minetest.get_player_by_name(name)
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pos = {x=f(pos.x),y=f(pos.y),z=f(pos.z)}
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island(pos,48,name)
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ref:set_pos({x=pos.x,y=pos.y+256,z=pos.z})
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end
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local store = minetest.get_mod_storage()
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local players = minetest.deserialize(store:get_string("players")) or {}
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local cells = minetest.deserialize(store:get_string("cells")) or {}
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local function save()
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store:set_string("players",minetest.serialize(players))
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store:set_string("cells",minetest.serialize(cells))
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end
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do
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local c = cells
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cells = {}
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for k,v in pairs(c) do
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if v.island then
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if v.valid and not v.name or v.name == "" then
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table.insert(cells,{pos=v.islandpos,valid=v.valid})
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end
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else
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table.insert(cells,v)
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end
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end
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local p = players
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players = {}
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for k,v in pairs(p) do
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players[k] = {pos=v.islandpos or v.pos, valid = v.valid}
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end
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save()
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end
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local air_c = minetest.get_content_id("air")
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local ignore_c = minetest.get_content_id("ignore")
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local function island_range(x,y,z)
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return {x=x-64,y=y-64,z=z-64},{x=x+64,y=y+64,z=z+64}
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end
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local function checkpos(x,y,z)
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local vm = VoxelManip(island_range(x,y,z))
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local emi,ema = vm:get_emerged_area()
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local dat = vm:get_data()
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local ar = VoxelArea:new{MinEdge=emi,MaxEdge=ema}
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for x = x-32,x+32 do
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for y = y-32,y+32 do
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for z = z-32,z+32 do
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local d = dat[ar:index(x,y,z)]
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if d ~= air_c and d ~= ignore_c then
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return false
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end
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end
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end
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end
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return true
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end
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local function intersect(a,b)
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local ap1,ap2 = a[1],a[2]
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local bp1,bp2 = b[1],b[2]
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local ax1,ay1,az1 = ap1.x,ap1.y,ap1.z
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local ax2,ay2,az2 = ap2.x,ap2.y,ap2.z
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local bx1,by1,bz1 = bp1.x,bp1.y,bp1.z
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local bx2,by2,bz2 = bp2.x,bp2.y,bp2.z
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return
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ax1 <= bx2 and
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ax2 >= bx1 and
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ay1 <= by2 and
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ay2 >= by1 and
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az1 <= bz2 and
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az2 >= bz1
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end
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local function get_standing_island(name)
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local ref = minetest.get_player_by_name(name)
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local pos = ref:get_pos()
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local islands = {}
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for k,v in pairs(cells) do
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if intersect({island_range(v.pos.x,v.pos.y,v.pos.z)},{pos,pos}) then
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table.insert(islands,{pos=v.pos,owner=nil,valid = not not v.valid,t=cells,k=k})
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end
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end
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for k,v in pairs(players) do
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if intersect({island_range(v.pos.x,v.pos.y,v.pos.z)},{pos,pos}) then
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table.insert(islands,{pos=v.pos,owner=k,valid = not not v.valid,t=players,k=k})
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end
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end
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if #islands == 0 then
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return
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end
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local closesti = table.remove(islands)
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local closestl = vector.length(vector.subtract(closesti.pos,pos))
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while #islands > 0 do
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local isl = table.remove(islands)
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local l = vector.length(vector.subtract(isl.pos,pos))
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if l < closestl then
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closesti = isl
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closestl = l
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end
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end
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return closesti
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end
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local function gen_island_pos(name)
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local x,y,z = 0,0,0
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x,z = x+math.random(-32,32),z+math.random(-32,32)
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y=256+math.random(-64,64)
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local ok = checkpos(x,y,z)
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for k,isl in ipairs(cells) do
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if isl and isl.valid then
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table.remove(cells,k)
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local ip = isl.pos
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local ref = minetest.get_player_by_name(name)
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local pos = ip
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players[name] = {pos = pos, valid = false}
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save()
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pos = {x=f(pos.x),y=f(pos.y),z=f(pos.z)}
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ref:set_pos({x=pos.x,y=pos.y+256,z=pos.z})
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return
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end
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end
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while not ok do
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x,z = x+math.random(-32,32),z+math.random(-32,32)
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y=256+math.random(-64,64)
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ok = checkpos(x,y,z)
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end
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local ip = {x=x,y=y,z=z}
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spawn_island(name,ip)
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local pl = {
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pos = ip,
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valid = false
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}
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players[name] = pl
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save()
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end
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local updrate = 0.5
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local to_upd = updrate
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minetest.register_globalstep(function(dt)
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for f,_ in pairs(queue) do
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local ok,err = coroutine.resume(f)
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if not ok then
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print(err)
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queue[f]=nil
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end
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end
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to_upd = to_upd-dt
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if to_upd <= 0 then
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to_upd = to_upd+updrate
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for k,ref in pairs(minetest.get_connected_players()) do
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local is = get_standing_island(ref:get_player_name())
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if is and is.t == cells and not minetest.check_player_privs(ref,{server = true}) then
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cells[is.k].valid = false
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end
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local p = ref:get_pos()
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if p.y < -64 then
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ref:set_hp(ref:get_hp()-2,{reason="set_hp"})
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if p.y < -128 then
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local land = players[ref:get_player_name()]
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local pos
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if land then
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pos = land.pos
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elseif minetest.check_player_privs(ref,{interact = true}) then
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gen_island_pos(ref:get_player_name())
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end
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if pos then
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pos.y=pos.y+256
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ref:set_pos(pos)
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end
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end
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end
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end
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end
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end)
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minetest.register_chatcommand("register", {
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description = S"Register island",
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privs = {server = true},
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func = function(name,param)
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if get_standing_island(name) then
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minetest.chat_send_player(name,S"There is an island already")
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return
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end
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local ref = minetest.get_player_by_name(name)
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local pos = ref:get_pos()
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ip = {x=f(pos.x+.5),y=f(pos.y+.5),z=f(pos.z+.5)}
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table.insert(cells,{pos=ip, valid=false})
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minetest.chat_send_player(name,"OK")
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save()
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end
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})
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minetest.register_chatcommand("unregister", {
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description = S"Unregister island",
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privs = {server = true},
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func = function(name,param)
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local is = get_standing_island(name)
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if not is then
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minetest.chat_send_player(name,S"No island here")
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return
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end
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if is.t == cells then
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cells[is.k] = nil
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end
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if is.t == players then
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local nam = is.owner
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players[nam] = nil
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end
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minetest.chat_send_player(name,S"OK")
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save()
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end
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})
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minetest.register_chatcommand("assign", {
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description = S"Reassign this island",
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privs = {server = true},
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func = function(name,param)
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local is = get_standing_island(name)
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if not minetest.get_player_by_name(param) then
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minetest.chat_send_player(name,S("No player @1",param))
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return
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end
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if players[param] then
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local ois = players[param]
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table.insert(cells,{pos=ois.pos,valid = false})
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players[param] = nil
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end
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if not is then
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minetest.chat_send_player(name,S"No island here")
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return
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else
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players[name] = {pos = is.pos, valid = is.valid}
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is.t[is.k] = nil
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end
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minetest.chat_send_player(name,S"OK")
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save()
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end
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})
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minetest.register_chatcommand("unassign", {
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description = S"Unassign this island",
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privs = {server = true},
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func = function(name,param)
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local is = get_standing_island(name)
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if not is then
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minetest.chat_send_player(name,S"No island here")
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return
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end
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if is.t == cells then
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minetest.chat_send_player(name,S"Island is already unassigned")
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return
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end
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if is.t == players then
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local nam = is.owner
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players[nam] = nil
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table.insert(cells,{pos=is.pos,valid=is.valid})
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end
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minetest.chat_send_player(name,S"OK")
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save()
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end
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})
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minetest.register_chatcommand("validate", {
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description = S"Make this island avaible for newcomers, if not owned by a player",
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privs = {server = true},
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func = function(name,param)
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local is = get_standing_island(name)
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if is then
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is.t[is.k].valid = true
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minetest.chat_send_player(name,S"OK")
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else
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minetest.chat_send_player(name,S"No island here")
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return
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end
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save()
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end
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})
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minetest.register_chatcommand("invalidate", {
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description = S"Make this island unavaible for newcomers",
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privs = {server = true},
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func = function(name,param)
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local is = get_standing_island(name)
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if is then
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is.t[is.k].valid = false
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minetest.chat_send_player(name,S"OK")
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else
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minetest.chat_send_player(name,S"No island here")
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return
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end
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save()
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end
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})
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minetest.register_chatcommand("query", {
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description = S"Query information about this island",
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func = function(name,param)
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local is = get_standing_island(name)
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if is then
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minetest.chat_send_player(name,"[")
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minetest.chat_send_player(name," owner: "..((is.owner == "" and "(none)" or is.owner) or "(none)"))
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minetest.chat_send_player(name," takeable: "..tostring(is.valid))
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minetest.chat_send_player(name," pos: "..minetest.pos_to_string(is.pos))
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minetest.chat_send_player(name,"]")
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else
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minetest.chat_send_player(name,S"No island here")
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end
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save()
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end
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})
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minetest.register_chatcommand("reset",{
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description = S"Get a new island",
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privs = {interact = true},
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func = function(name)
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local utime = minetest.get_server_uptime()
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local cd = cooldowns[name]
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if cd and cd > utime then
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minetest.chat_send_player(name,S("You can't get a new island yet. Wait @1 secs.",(cd-utime)))
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return
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end
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cooldowns[name] = utime + cooldown
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local pl = players[name]
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if pl then
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players[name] = nil
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end
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gen_island_pos(name)
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end
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})
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minetest.register_on_joinplayer(function(ref)
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local meta = ref:get_meta()
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local name = ref:get_player_name()
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if meta:get_string("islandpos") ~= "" then
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if not players[name] then
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local pos = minetest.string_to_pos(meta:get_string("islandpos"))
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local hascell = false
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for k,v in pairs(players) do
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if vector.length(vector.subtract(v.pos,pos)) < 8 then
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hascell = true
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break
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end
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end
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while true do
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local rem = false
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for k,v in pairs(cells) do
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if vector.length(vector.subtract(v.pos,pos)) < 8 then
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table.remove(cells,k)
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rem = true
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break
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end
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end
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if not rem then
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break
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end
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end
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if not hascell then
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local pl = {
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pos = pos,
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valid = false
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}
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players[name] = pl
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else
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gen_island_pos(name)
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end
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end
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save()
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meta:set_string("island","")
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meta:set_string("islandpos","")
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meta:set_string("islandrange","")
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else
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if not players[name] then
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gen_island_pos(name)
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save()
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else
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local p = players[name]
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if p.islandpos then
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players[name] = {pos = p.islandpos, valid = false}
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save()
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|
end
|
|
local pos = players[name].pos
|
|
local hascell = false
|
|
for k,v in pairs(players) do
|
|
if vector.length(vector.subtract(v.pos,pos)) < 8 and k ~= name then
|
|
hascell = true
|
|
break
|
|
end
|
|
end
|
|
while true do
|
|
local rem = false
|
|
for k,v in pairs(cells) do
|
|
if vector.length(vector.subtract(v.pos,pos)) < 8 then
|
|
table.remove(cells,k)
|
|
rem = true
|
|
break
|
|
end
|
|
end
|
|
if not rem then
|
|
break
|
|
end
|
|
end
|
|
if hascell then
|
|
players[name] = nil
|
|
gen_island_pos(name)
|
|
end
|
|
end
|
|
end
|
|
end) |