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use the heightmap to reduce ground searching

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This commit is contained in:
HybridDog 2015-07-11 19:47:21 +02:00
parent 939c63e507
commit a217f17566
1 changed files with 7 additions and 6 deletions
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13
src/mapgen_v6.lua
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@ -147,6 +147,8 @@ minetest.register_on_generated(function(minp, maxp, seed)
local data = vm:get_data()
local param2s = vm:get_param2_data()
local heightmap = minetest.get_mapgen_object("heightmap")
local snow_tab,num = {},1
local pines_tab,pnum = {},1
@ -199,11 +201,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
and test
and test > smooth_rarity_min then
-- remove trees near alpine
local ground_y = nil
for y = maxp.y, minp.y, -1 do
local nodid = data[area:index(x, y, z)]
if nodid ~= c.air
and nodid ~= c.ignore then
local ground_y
for y = math.min(heightmap[ni]+20, maxp.y), math.max(minp.y, heightmap[ni]-5), -1 do
if data[area:index(x, y, z)] ~= c.air then
ground_y = y
break
end
@ -242,8 +242,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
local icesheet = icetype > -0.6 and icetype <= -0.4
local icecave = icetype <= -0.6
local ground_y
for y = maxp.y, minp.y, -1 do
for y = math.min(heightmap[ni]+20, maxp.y), math.max(minp.y, heightmap[ni]-5), -1 do
local nodid = data[area:index(x, y, z)]
if nodid ~= c.air then
ground_y = y