mtcontrib/biome_lib
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make sure the target mapblock and all 8 of its corner neighbors have

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been generated before populating the block (else move the target block
the end of the queue)

Thanks to Warr1024 for this idea!
This commit is contained in:
Vanessa Dannenberg 2021-04-06 12:37:47 -04:00
parent 0ea4cb3848
commit 3bc8737e2d
1 changed files with 35 additions and 10 deletions
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45
init.lua
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@ -424,7 +424,23 @@ end
-- Primary log read-out/mapgen spawner
function biome_lib.generate_block()
local function confirm_block_surroundings(p)
local n=minetest.get_node_or_nil(p)
if not n or n.name == "ignore" then return false end
for x = -32,32,64 do -- step of 64 causes it to only check the 8 corner blocks
for y = -32,32,64 do
for z = -32,32,64 do
local pos = {x=p.x + x, y=p.y + y, z=p.z + z}
local n=minetest.get_node_or_nil(pos)
if not n or n.name == "ignore" then return false end
end
end
end
return true
end
function biome_lib.generate_block(shutting_down)
if not biome_lib.block_log[1] then return end -- the block log is empty
local minp = biome_lib.block_log[1][1]
@ -434,14 +450,23 @@ function biome_lib.generate_block()
if not biome_lib.pos_hash then -- we need to read the maplock and get the surfaces list
biome_lib.pos_hash = {}
biome_lib.pos_hash.surface_node_list = airflag
and minetest.find_nodes_in_area_under_air(minp, maxp, biome_lib.surfaceslist_aircheck)
or minetest.find_nodes_in_area(minp, maxp, biome_lib.surfaceslist_no_aircheck)
biome_lib.pos_hash.action_index = 1
if #biome_lib.pos_hash.surface_node_list > 0 then
biome_lib:dbg("Mapblock at "..minetest.pos_to_string(minp)..
" has "..#biome_lib.pos_hash.surface_node_list..
" surface nodes to work on (airflag="..dump(airflag)..")")
if not confirm_block_surroundings(minp) and not shutting_down then -- if any neighbors appear not to be loaded, move this block to the end of the queue
biome_lib.block_log[#biome_lib.block_log + 1] = biome_lib.block_log[1]
table.remove(biome_lib.block_log, 1)
biome_lib.pos_hash = nil
biome_lib:dbg("Mapblock at "..minetest.pos_to_string(minp)..
" had a neighbor not fully emerged, moved it to the end of the queue.")
return
else
biome_lib.pos_hash.surface_node_list = airflag
and minetest.find_nodes_in_area_under_air(minp, maxp, biome_lib.surfaceslist_aircheck)
or minetest.find_nodes_in_area(minp, maxp, biome_lib.surfaceslist_no_aircheck)
biome_lib.pos_hash.action_index = 1
if #biome_lib.pos_hash.surface_node_list > 0 then
biome_lib:dbg("Mapblock at "..minetest.pos_to_string(minp)..
" has "..#biome_lib.pos_hash.surface_node_list..
" surface nodes to work on (airflag="..dump(airflag)..")")
end
end
elseif not (airflag and biome_lib.actionslist_aircheck[biome_lib.pos_hash.action_index])
and not (not airflag and biome_lib.actionslist_no_aircheck[biome_lib.pos_hash.action_index]) then
@ -504,7 +529,7 @@ minetest.register_on_shutdown(function()
print("[biome_lib] Stand by, playing out the rest of the mapblock log")
print("(there are "..#biome_lib.block_log.." entries)...")
while #biome_lib.block_log > 0 do
biome_lib.generate_block()
biome_lib.generate_block(true)
end
end)