Luanti/fun_caves
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Adjust caves near the surface.

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This commit is contained in:
Duane Robertson 2016-05-20 08:36:59 -05:00
parent 007fb4e38e
commit b4e2db7f3c
2 changed files with 16 additions and 13 deletions
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21
mapgen.lua
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@ -7,6 +7,17 @@ local biome_noise = {offset = 0.0, scale = 1.0, spread = {x = 400, y = 400, z =
local node = fun_caves.node
local group_stone = {}
group_stone[node("default:sandstone")] = true
for n, s in pairs(minetest.registered_nodes) do
if s.groups and s.groups['stone'] then
group_stone[node(n)] = true
end
end
for _, s in pairs(minetest.registered_ores) do
group_stone[node(s.ore)] = true
end
local min_surface = -80
local data = {}
local p2data = {} -- vm rotation data buffer
@ -194,8 +205,8 @@ function fun_caves.generate(p_minp, p_maxp, seed)
local ivm = area:index(x, minp.y, z)
for y = minp.y, maxp.y do
if y <= heightmap[index] - 10 or (y <= heightmap[index] and data[ivm] == node("default:stone")) then
if cave_1[index3d] * cave_2[index3d] > 0.05 then
if y < 40 and (y < min_surface or y <= heightmap[index]) and group_stone[data[ivm]] then
if cave_1[index3d] * cave_2[index3d] > 0.05 and (y < min_surface or y < heightmap[index] - 10 or cave_1[index3d] * cave_2[index3d] < 0.2) then
data[ivm] = node("air")
end
@ -222,7 +233,7 @@ function fun_caves.generate(p_minp, p_maxp, seed)
local ivm = area:index(x, maxp.y, z)
for y = maxp.y, minp.y, -1 do
if y <= heightmap[index] - 20 then
if y < min_surface or y <= heightmap[index] - 20 then
local ivm_below = ivm - area.ystride
local ivm_above = ivm + area.ystride
local dy = y - minp.y
@ -231,8 +242,8 @@ function fun_caves.generate(p_minp, p_maxp, seed)
local stone_type = node("default:stone")
local stone_depth = 1
local biome_val = biome_n[index3d]
if y > heightmap[index] - 500 then
biome_val = biome_val / math.max(1, math.log(500 - (heightmap[index] - y)))
if y > -500 then
biome_val = biome_val / math.max(1, math.log(500 + y))
end
-------------------
--biome_val = 0.7