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Fix surface pools with deep holes (#4571)

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Sometimes, pools would spawn deep underground and then produce deep holes.
I noticed that such pools would be at +48, at the block boundary.
IMHO this may be an error in minetest surface detection.

Nevertheless, here is a workaround: require air above pool spawns.

Also clean up the pool code

Reviewed-on: https://git.minetest.land/VoxeLibre/VoxeLibre/pulls/4571
Reviewed-by: Mikita Wiśniewski <rudzik8@protonmail.com>
Co-authored-by: kno10 <erich.schubert@gmail.com>
Co-committed-by: kno10 <erich.schubert@gmail.com>
This commit is contained in:
kno10 2024-09-09 13:25:30 +02:00 committed by the-real-herowl
parent 38822aba0a
commit dd4898b319
1 changed files with 17 additions and 29 deletions
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44
mods/MAPGEN/mcl_terrain_features/init.lua
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@ -30,27 +30,22 @@ local function airtower(pos,tbl,h)
end
local function makelake(pos,size,liquid,placein,border,pr,noair)
local node_under = minetest.get_node(vector.offset(pos,0,-1,0))
local p1 = vector.offset(pos,-size,-1,-size)
local p2 = vector.offset(pos,size,-1,size)
minetest.emerge_area(p1, p2, function(blockpos, action, calls_remaining, param)
local p1, p2 = vector.offset(pos,-size,-1,-size), vector.offset(pos,size,-1,size)
local e1, e2 = vector.offset(pos,-size,-2,-size), vector.offset(pos,size,15,size)
minetest.emerge_area(e1, e2, function(blockpos, action, calls_remaining, param)
if calls_remaining ~= 0 then return end
local nn = minetest.find_nodes_in_area(p1,p2,placein)
table.sort(nn,function(a, b)
return vector.distance(vector.new(pos.x,0,pos.z), a) < vector.distance(vector.new(pos.x,0,pos.z), b)
end)
if not nn[1] then return end
local y = pos.y - pr:next(1,2)
local lq = {}
local air = {}
table.sort(nn,function(a, b)
return vector.distance(pos, a) < vector.distance(pos, b)
end)
local y = pos.y - 1
local lq, air = {}, {}
local r = pr:next(1,#nn)
if r > #nn then return end
for i=1,r do
if nn[i].y == y then
airtower(nn[i],air,55)
airtower(nn[i],air,20)
table.insert(lq,nn[i])
end
end
minetest.bulk_set_node(lq,{name=liquid})
minetest.bulk_set_node(air,{name="air"})
air = {}
@ -59,7 +54,6 @@ local function makelake(pos,size,liquid,placein,border,pr,noair)
for kk,vv in pairs(adjacents) do
local pp = vector.add(v,vv)
local an = minetest.get_node(pp)
local un = minetest.get_node(vector.offset(pp,0,1,0))
if not border then
if minetest.get_item_group(an.name,"solid") > 0 then
border = an.name
@ -72,9 +66,11 @@ local function makelake(pos,size,liquid,placein,border,pr,noair)
end
if not noair and an.name ~= liquid then
table.insert(br,pp)
--[[ no need to have air above border:
local un = minetest.get_node(vector.offset(pp,0,1,0))
if un.name ~= liquid then
airtower(pp,air,55)
end
airtower(pp,air,20)
end]]--
end
end
end
@ -181,7 +177,7 @@ mcl_structures.register_structure("lavapool",{
persist = 0.001,
flags = "absvalue",
},
flags = "place_center_x, place_center_z, force_placement",
flags = "place_center_x, place_center_z, all_floors",
y_max = mcl_vars.mg_overworld_max,
y_min = minetest.get_mapgen_setting("water_level"),
place_func = function(pos,def,pr)
@ -201,7 +197,7 @@ mcl_structures.register_structure("water_lake",{
persist = 0.001,
flags = "absvalue",
},
flags = "place_center_x, place_center_z, force_placement",
flags = "place_center_x, place_center_z, all_floors",
y_max = mcl_vars.mg_overworld_max,
y_min = minetest.get_mapgen_setting("water_level"),
place_func = function(pos,def,pr)
@ -222,7 +218,7 @@ mcl_structures.register_structure("water_lake_mangrove_swamp",{
persist = 0.001,
flags = "absvalue",
},
flags = "place_center_x, place_center_z, force_placement",
flags = "place_center_x, place_center_z, all_floors",
y_max = mcl_vars.mg_overworld_max,
y_min = minetest.get_mapgen_setting("water_level"),
place_func = function(pos,def,pr)
@ -230,14 +226,6 @@ mcl_structures.register_structure("water_lake_mangrove_swamp",{
end
})
local pool_adjacents = {
vector.new(1,0,0),
vector.new(-1,0,0),
vector.new(0,-1,0),
vector.new(0,0,1),
vector.new(0,0,-1),
}
mcl_structures.register_structure("basalt_column",{
place_on = {"mcl_blackstone:blackstone","mcl_blackstone:basalt"},
terrain_feature = true,