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since registered_generators was a table, not an array, table.sort was having no effect and so priority was being ignored. Generators were being run in an arbitrary order. 

I discovered this when I attempted to register an lvm in a mod that was intended to run after "main", to modify clay that the main mapgen lvm adds to the world. It wasn't finding any clay because priority was being ignored and it was running before "main" was.
This commit is contained in:
FaceDeer 2022-08-28 22:11:02 -06:00
parent 1a09b5c132
commit e1bf4081dd
1 changed files with 15 additions and 10 deletions
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25
mods/MAPGEN/mcl_mapgen_core/init.lua
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@ -1,6 +1,5 @@
mcl_mapgen_core = {}
local registered_generators = {}
local registered_generators_count = 0
local lvm, nodes, param2 = 0, 0, 0
local lvm_buffer = {}
@ -1831,7 +1830,7 @@ minetest.register_on_generated(function(minp, maxp, blockseed)
end
local area = VoxelArea:new({MinEdge=e1, MaxEdge=e2})
for _, rec in pairs(registered_generators) do
for _, rec in ipairs(registered_generators) do
if rec.vf then
local lvm_used0, shadow0 = rec.vf(vm, data, data2, e1, e2, area, p1, p2, blockseed)
if lvm_used0 then
@ -1856,7 +1855,7 @@ minetest.register_on_generated(function(minp, maxp, blockseed)
end
if nodes > 0 then
for _, rec in pairs(registered_generators) do
for _, rec in ipairs(registered_generators) do
if rec.nf then
rec.nf(p1, p2, blockseed)
end
@ -1867,7 +1866,7 @@ minetest.register_on_generated(function(minp, maxp, blockseed)
end)
function minetest.register_on_generated(node_function)
mcl_mapgen_core.register_generator("mod_"..minetest.get_current_modname().."_"..tostring(registered_generators_count+1), nil, node_function)
mcl_mapgen_core.register_generator("mod_"..minetest.get_current_modname().."_"..tostring(#registered_generators+1), nil, node_function)
end
function mcl_mapgen_core.register_generator(id, lvm_function, node_function, priority, needs_param2)
@ -1880,24 +1879,30 @@ function mcl_mapgen_core.register_generator(id, lvm_function, node_function, pri
if needs_param2 then param2 = param2 + 1 end
local new_record = {
id = id,
i = priority,
vf = lvm_function,
nf = node_function,
needs_param2 = needs_param2,
}
registered_generators[id] = new_record
registered_generators_count = registered_generators_count + 1
table.insert(registered_generators, new_record)
table.sort(registered_generators, function(a, b)
return (a.i < b.i) or ((a.i == b.i) and a.vf and (b.vf == nil))
end)
end
function mcl_mapgen_core.unregister_generator(id)
if not registered_generators[id] then return end
local rec = registered_generators[id]
registered_generators[id] = nil
registered_generators_count = registered_generators_count - 1
local index
for i, gen in ipairs(registered_generators) do
if gen.id == id then
index = i
break
end
end
if not index then return end
local rec = registered_generators[index]
table.remove(registered_generators, index)
if rec.vf then lvm = lvm - 1 end
if rec.nf then nodes = nodes - 1 end
if rec.needs_param2 then param2 = param2 - 1 end