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mapgen: Use buffers for memory usage optimisation

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Hybrid Dog 2018-03-18 18:38:33 +01:00
parent 6e2ffa04ea
commit 5925dc5606
1 changed files with 23 additions and 10 deletions
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33
nether/init.lua
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@ -334,6 +334,14 @@ local perlins = {
},
}
-- buffers, see https://forum.minetest.net/viewtopic.php?f=18&t=16043
local pelin_maps
local pmap1 = {}
local pmap2 = {}
local pmap3 = {}
local pmap_f_top = {}
local data = {}
local structures_enabled = true
local vine_maxlength = math.floor(NETHER_HEIGHT/4+0.5)
-- Create the Nether
@ -360,7 +368,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
end
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
local data = vm:get_data()
vm:get_data(data)
local area = VoxelArea:new{MinEdge=emin, MaxEdge=emax}
pr = PseudoRandom(seed+33)
@ -374,22 +382,27 @@ minetest.register_on_generated(function(minp, maxp, seed)
local side_length = maxp.x - minp.x + 1
local map_lengths_xyz = {x=side_length, y=side_length, z=side_length}
local pmap1 = minetest.get_perlin_map(perlins[1], map_lengths_xyz
):get2dMap_flat{x=minp.x, y=minp.z}
local pmap2 = minetest.get_perlin_map(perlins[2], map_lengths_xyz
):get2dMap_flat{x=minp.x, y=minp.z}
local pmap3 = minetest.get_perlin_map(perlins[3], map_lengths_xyz
):get2dMap_flat{x=minp.x, y=minp.z}
if not pelin_maps then
pelin_maps = {
a = minetest.get_perlin_map(perlins[1], map_lengths_xyz),
b = minetest.get_perlin_map(perlins[2], map_lengths_xyz),
c = minetest.get_perlin_map(perlins[3], map_lengths_xyz),
forest_top = minetest.get_perlin_map(perlins.forest_top,
map_lengths_xyz),
}
end
pelin_maps.a:get2dMap_flat({x=minp.x, y=minp.z}, pmap1)
pelin_maps.b:get2dMap_flat({x=minp.x, y=minp.z}, pmap2)
pelin_maps.c:get2dMap_flat({x=minp.x, y=minp.z}, pmap3)
local forest_possible = maxp.y > f_h_min and minp.y < f_h_max
--local pmap_f_bottom = minetest.get_perlin_map(perlins.forest_bottom,
-- map_lengths_xyz):get2dMap_flat({x=minp.x, y=minp.z})
local perlin_f_bottom, pmap_f_top, strassx, strassz
local perlin_f_bottom, strassx, strassz
if forest_possible then
perlin_f_bottom = minetest.get_perlin(11, 3, 0.8, tmp2)
pmap_f_top = minetest.get_perlin_map(perlins.forest_top, map_lengths_xyz
):get2dMap_flat{x=minp.x, y=minp.z}
pelin_maps.forest_top:get2dMap_flat({x=minp.x, y=minp.z}, pmap_f_top)
strassx = get_ws_list(2, minp.x)
strassz = get_ws_list(2, minp.z)
end