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

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)