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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 = {} mcl_mapgen_core = {}
local registered_generators = {} local registered_generators = {}
local registered_generators_count = 0
local lvm, nodes, param2 = 0, 0, 0 local lvm, nodes, param2 = 0, 0, 0
local lvm_buffer = {} local lvm_buffer = {}
@ -1831,7 +1830,7 @@ minetest.register_on_generated(function(minp, maxp, blockseed)
end end
local area = VoxelArea:new({MinEdge=e1, MaxEdge=e2}) 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 if rec.vf then
local lvm_used0, shadow0 = rec.vf(vm, data, data2, e1, e2, area, p1, p2, blockseed) local lvm_used0, shadow0 = rec.vf(vm, data, data2, e1, e2, area, p1, p2, blockseed)
if lvm_used0 then if lvm_used0 then
@ -1856,7 +1855,7 @@ minetest.register_on_generated(function(minp, maxp, blockseed)
end end
if nodes > 0 then if nodes > 0 then
for _, rec in pairs(registered_generators) do for _, rec in ipairs(registered_generators) do
if rec.nf then if rec.nf then
rec.nf(p1, p2, blockseed) rec.nf(p1, p2, blockseed)
end end
@ -1867,7 +1866,7 @@ minetest.register_on_generated(function(minp, maxp, blockseed)
end) end)
function minetest.register_on_generated(node_function) 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 end
function mcl_mapgen_core.register_generator(id, lvm_function, node_function, priority, needs_param2) 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 if needs_param2 then param2 = param2 + 1 end
local new_record = { local new_record = {
id = id,
i = priority, i = priority,
vf = lvm_function, vf = lvm_function,
nf = node_function, nf = node_function,
needs_param2 = needs_param2, needs_param2 = needs_param2,
} }
registered_generators[id] = new_record table.insert(registered_generators, new_record)
registered_generators_count = registered_generators_count + 1
table.sort(registered_generators, function(a, b) table.sort(registered_generators, function(a, b)
return (a.i < b.i) or ((a.i == b.i) and a.vf and (b.vf == nil)) return (a.i < b.i) or ((a.i == b.i) and a.vf and (b.vf == nil))
end) end)
end end
function mcl_mapgen_core.unregister_generator(id) function mcl_mapgen_core.unregister_generator(id)
if not registered_generators[id] then return end local index
local rec = registered_generators[id] for i, gen in ipairs(registered_generators) do
registered_generators[id] = nil if gen.id == id then
registered_generators_count = registered_generators_count - 1 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.vf then lvm = lvm - 1 end
if rec.nf then nodes = nodes - 1 end if rec.nf then nodes = nodes - 1 end
if rec.needs_param2 then param2 = param2 - 1 end if rec.needs_param2 then param2 = param2 - 1 end