mtcontrib/minetest-mod-snow
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Experimental pine tree generation, minor fixes.

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Splizard 2012-07-23 21:38:59 +12:00
parent 577021d5a9
commit 5cc4873279
1 changed files with 63 additions and 21 deletions
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84
mapgen.lua
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@ -3,6 +3,27 @@ minetest.register_on_generated(function(minp, maxp, seed)
if maxp.y >= -10 then
local debug = snow.debug
--Should make things a bit faster.
local env = minetest.env
--Get map specific perlin
local perlin1 = env:get_perlin(112,3, 0.5, 150)
-- Assume X and Z lengths are equal
local divlen = 16
local divs = (maxp.x-minp.x);
local x0 = minp.x
local z0 = minp.z
local x1 = maxp.x
local z1 = maxp.z
--Speed hack: checks the corners and middle of the chunk for "snow biome".
if not (perlin1:get2d({x=x0, y=z0}) > 0.53) and not (perlin1:get2d({x=x1, y=z1}) > 0.53)
and not (perlin1:get2d({x=x0, y=z1}) > 0.53) and not (perlin1:get2d({x=x1, y=z0}) > 0.53)
and not (perlin1:get2d({x=(x1-x0)/2, y=(z1-z0)/2}) > 0.53) then
return
end
--Choose a biome type.
local pr = PseudoRandom(seed+57)
local biome = pr:next(1, 10)
@ -16,17 +37,7 @@ if maxp.y >= -10 then
local icy = pr:next(1, 2) == 2 --If enabled spawns ice in sand instead of snow blocks.
local mossy = pr:next(1,2) == 1 --Spawns moss in snow.
local shrubs = pr:next(1,2) == 1 --Spawns dry shrubs in snow.
-- Assume X and Z lengths are equal
local divlen = 16
local divs = (maxp.x-minp.x);
local x0 = minp.x
local z0 = minp.z
local x1 = maxp.x
local z1 = maxp.z
--Should make things a bit faster.
local env = minetest.env
local pines = pr:next(1,2) == 1 --spawns pines.
--Debugging function
local biomeToString = function(num)
@ -39,18 +50,45 @@ if maxp.y >= -10 then
else return "unknown "..num end
end
--Get map specific perlin
local perlin1 = env:get_perlin(112,3, 0.5, 150)
pr = PseudoRandom(seed+68)
--Speed hack: checks the corners and middle of the chunk for "snow biome".
if not (perlin1:get2d({x=x0, y=z0}) > 0.53) and not (perlin1:get2d({x=x1, y=z1}) > 0.53)
and not (perlin1:get2d({x=x0, y=z1}) > 0.53) and not (perlin1:get2d({x=x1, y=z0}) > 0.53)
and not (perlin1:get2d({x=(x1-x0)/2, y=(z1-z0)/2}) > 0.53) then
if debug then print(biomeToString(biome)..": ABORTED!") end
return
local function make_pine(pos)
--Clear ground.
for x=-1,1 do
for z=-1,1 do
if env:get_node({x=pos.x+x,y=pos.y,z=pos.z+z}).name == "snow:snow" then
env:remove_node({x=pos.x+x,y=pos.y,z=pos.z+z})
end
end
end
--Make tree.
for i=0, 4 do
local env = minetest.env
if i==1 or i==2 then
for x=-1,1 do
for z=-1,1 do
local x = pos.x + x
local z = pos.z + z
env:add_node({x=x,y=pos.y+i,z=z},{name="default:leaves"})
end
end
end
if i==3 or i==4 then
local x = pos.x
local y = pos.y+i
local z = pos.z
env:add_node({x=x+1,y=y,z=z},{name="default:leaves"})
env:add_node({x=x-1,y=y,z=z},{name="default:leaves"})
env:add_node({x=x,y=y,z=z+1},{name="default:leaves"})
env:add_node({x=x,y=y,z=z-1},{name="default:leaves"})
end
env:add_node({x=pos.x,y=pos.y+i,z=pos.z},{name="default:tree"})
end
env:add_node({x=pos.x,y=pos.y+5,z=pos.z},{name="default:leaves"})
env:add_node({x=pos.x,y=pos.y+6,z=pos.z},{name="default:leaves"})
end
--Reseed random.
pr = PseudoRandom(seed+68)
--Loop through chunk.
for j=0,divs do
for i=0,divs do
@ -83,6 +121,10 @@ if maxp.y >= -10 then
--Spawns moss inside snow.
env:add_node({x=x,y=ground_y,z=z}, {name="snow:dirt_with_snow"})
env:add_node({x=x,y=ground_y+1,z=z}, {name="snow:snow",param2=1})
elseif pines and test > 0.85 and pr:next(1,36) == 1 then
--Spawns pines.
env:add_node({x=x,y=ground_y,z=z}, {name="snow:dirt_with_snow"})
make_pine({x=x,y=ground_y+1,z=z})
else
--Spawns snow.
env:add_node({x=x,y=ground_y,z=z}, {name="snow:dirt_with_snow"})