HeroOfTheWinds/fractured
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Better solution to wall variation

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A little more complicated, but far better results.  Changed
fracrift_material to sandstone, since that looks more natural by water.
Explained added code better.  Uncommented vital line.
This commit is contained in:
Chris N 2015-03-02 17:03:32 -10:00
parent e3fcaa70a9
commit 08a052dd97
1 changed files with 20 additions and 10 deletions
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30
mods/fracturerift/init.lua
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@ -5,13 +5,13 @@
---
local fracrift_width=80 --how wide the rift will be
--local fracrift_depth_air=33000 --how deep before the water
local fracrift_depth_air=33000 --how deep before the water
local fracrift_depth_water=20 --how deep the water will be
local fracrift_top=100 --max height to scan for land to remove
local fracrift_bottomsmooth=0.995 --odds of bottom being smooth
local fracrift_waterfallchance=0.997 --odds of NOT having a waterfall hole in wall
local fracrift_material=minetest.get_content_id("default:stone")
minetest.get_content_id("default:stone")
local fracrift_material=minetest.get_content_id("default:sandstone") -- Makes more sense, no?
minetest.get_content_id("default:sandstone")
--calculated constants
local fracrift_half=fracrift_width/2
@ -77,14 +77,24 @@ minetest.register_on_generated(function(minp, maxp, seed)
for x = x0, x1 do -- for each node do
local vi = area:index(x, y, z) -- This accesses the node at a given position
if x > -fracrift_edge and x < fracrift_edge then
local grad = math.abs(x / (fracrift_edge * 1.5))
if ((math.abs(nvals_walls[nixyz]) + grad) > 0.6) and (x < -fracrift_edge/3 or x > fracrift_edge/3) then
local grad = math.abs(x / fracrift_edge) * (10^(math.abs(x / fracrift_edge)) / 10) -- Density gradient. This controls how much to offset the noise value as x approaches the walls of the chasm.
if x > -fracrift_edge and x < fracrift_edge then -- If within chasm-generating limits
if ((math.abs(nvals_walls[nixyz]) - grad) > 0) then -- Check the value of the perlin noise at this position with respect to distance from center
if data[vi] ~= c_air then
data[vi] = fracrift_material
data[vi] = c_air -- Hollow out the chasm with smooth walls
end
else
if (x < -fracrift_edge/3 or x > fracrift_edge/3) then -- Put limits in to make sure the chasm always stays at least some ways open
if data[vi] == c_water then -- If there's water, make it wall material so as not to drain the oceans :P
data[vi] = fracrift_material
end
else
if (x > -fracrift_edge/3 or x < fracrift_edge/3) then -- In the limits, always hollow this
data[vi] = c_air
end
end
else
data[vi] = c_air
end
changed = true
@ -92,7 +102,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
end -- if x > -fracrift_edge and x < fracrift_edge
if x == -fracrift_edge or x == fracrift_edge then -- x is on edge
if data[vi] == c_water and math.random() < fracrift_waterfallchance then
if data[vi] == c_water and math.random() < fracrift_waterfallchance and (math.abs(nvals_walls[nixyz]) - grad) > 0 then
data[vi]=fracrift_material
changed=true
end -- change water to stone on edge