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Rewrite schematic format

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This commit is contained in:
Lars Mueller 2021-05-09 13:04:17 +02:00
parent cb5e291285
commit edb9e98223
1 changed files with 62 additions and 38 deletions
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100
minetest/schematic.lua
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@ -6,34 +6,49 @@ function schematic.setmetatable(self)
end
function schematic.create(self, pos_min, pos_max)
-- Don't use the metatable for the defaults to force a serialization
self.baked_light = self.backed_light or false
self.meta_data = self.meta_data or true
self.size = vector.subtract(pos_max, pos_min)
local voxelmanip = minetest.get_voxel_manip(pos_min, pos_max)
local emin, emax = voxelmanip:read_from_map(pos_min, pos_max)
local voxelarea = VoxelArea:new{ MinEdge = emin, MaxEdge = emax }
local meta_data = {}
for _, pos in ipairs(minetest.find_nodes_with_meta(pos_min, pos_max)) do
local meta = minetest.get_meta(pos):to_table()
if next(meta.fields) ~= nil or next(meta.inventory) ~= nil then
meta_data[voxelarea:indexp(pos)] = meta
end
end
local data, light_data, param2_data = voxelmanip:get_data(), self.baked_light and voxelmanip:get_light_data() or {}, voxelmanip:get_param2_data()
local nodes = {}
local nodes, light_values, param2s = {}, self.light_values and {}, {}
local vm_nodes, vm_light_values, vm_param2s = voxelmanip:get_data(), light_values and voxelmanip:get_light_data(), voxelmanip:get_param2_data()
local node_names, node_ids = {}, {}
local i = 0
for index in voxelarea:iterp(pos_min, pos_max) do
if data[index] == minetest.CONTENT_UNKNOWN or data[index] == minetest.CONTENT_IGNORE then
if nodes[index] == minetest.CONTENT_UNKNOWN or nodes[index] == minetest.CONTENT_IGNORE then
error("unknown or ignore node at " .. minetest.pos_to_string(voxelarea:position(index)))
end
table.insert(nodes, {
name = minetest.get_name_from_content_id(data[index]),
light = light_data[index],
param2 = param2_data[index],
meta = meta_data[index]
})
local name = minetest.get_name_from_content_id(vm_nodes[index])
local id = node_ids[name]
if not id then
table.insert(node_names, name)
id = #node_names
node_ids[name] = id
end
i = i + 1
nodes[i] = id
if self.light_values then
light_values[i] = vm_light_values[index]
end
param2s[i] = vm_param2s[index]
end
local metas = self.metas
if metas or metas == nil then
local indexing = vector.add(self.size, 1)
metas = {}
for _, pos in ipairs(minetest.find_nodes_with_meta(pos_min, pos_max)) do
local meta = minetest.get_meta(pos):to_table()
if next(meta.fields) ~= nil or next(meta.inventory) ~= nil then
local relative = vector.subtract(pos, pos_min)
metas[((relative.z * indexing.y) + relative.y) * indexing.x + relative.x] = meta
end
end
end
self.node_names = node_names
self.nodes = nodes
self.light_values = light_values
self.param2s = param2s
self.metas = metas
return schematic.setmetatable(self)
end
@ -41,40 +56,49 @@ function schematic:write_to_voxelmanip(voxelmanip, pos_min)
local pos_max = vector.add(pos_min, self.size)
local emin, emax = voxelmanip:read_from_map(pos_min, pos_max)
local voxelarea = VoxelArea:new{ MinEdge = emin, MaxEdge = emax }
local data, light_data, param2_data = voxelmanip:get_data(), self.baked_light and voxelmanip:get_light_data(), voxelmanip:get_param2_data()
local nodes, light_values, param2s, metas = self.nodes, self.light_values, self.param2s, self.metas
local vm_nodes, vm_lights, vm_param2s = voxelmanip:get_data(), light_values and voxelmanip:get_light_data(), voxelmanip:get_param2_data()
for _, pos in ipairs(minetest.find_nodes_with_meta(pos_min, pos_max)) do
-- Clear all metadata. Due to an engine bug, nodes will actually have empty metadata.
minetest.get_meta(pos):from_table{}
end
local i = 1
local content_ids = {}
for index, name in ipairs(self.node_names) do
content_ids[index] = assert(minetest.get_content_id(name), ("unknown node %q"):format(name))
end
local i = 0
for index in voxelarea:iterp(pos_min, pos_max) do
local node = self.nodes[i]
i = i + 1
data[index] = minetest.get_content_id(node.name)
if data[index] == nil then
error(("unknown node %q"):format(node.name))
vm_nodes[index] = content_ids[nodes[i]]
if light_values then
vm_lights[index] = light_values[i]
end
if self.baked_light then
light_data[index] = node.light
end
param2_data[index] = node.param2
if node.meta then
-- TODO consider removing this check by using a separate table [index] = meta for node meta
minetest.get_meta(voxelarea:position(index)):from_table(node.meta)
vm_param2s[index] = param2s[i]
end
voxelmanip:set_data(vm_nodes)
if light_values then
voxelmanip:set_light_data(vm_lights)
end
voxelmanip:set_param2_data(vm_param2s)
if metas then
local indexing = vector.add(self.size, 1)
for index, meta in pairs(metas) do
local floored = math.floor(index / indexing.x)
local relative = {
x = index % indexing.x,
y = floored % indexing.y,
z = math.floor(floored / indexing.y)
}
minetest.get_meta(vector.add(relative, pos_min)):from_table(meta)
end
end
voxelmanip:set_data(data)
if self.baked_light then
voxelmanip:set_light_data(light_data)
end
voxelmanip:set_param2_data(param2_data)
end
function schematic:place(pos_min)
local pos_max = vector.add(pos_min, self.size)
local voxelmanip = minetest.get_voxel_manip(pos_min, pos_max)
self:write_to_voxelmanip(voxelmanip, pos_min)
voxelmanip:write_to_map(not self.baked_light)
voxelmanip:write_to_map(not self.light_data)
return voxelmanip
end