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LVM: Fix ContentID inaccuracy

master
rubenwardy 2021-01-25 08:38:39 +00:00
parent d12e5244b3
commit e8e16eee5d
1 changed files with 5 additions and 7 deletions
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_en/advmap/lvm.md
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@ -105,9 +105,8 @@ if data[idx] == c_stone then
end
```
It is recommended that you find and store the content IDs of nodes types
at load time because the IDs of a node type will never change. Make sure to store
the IDs in a local variable for performance reasons.
Content IDs of a node type may change during load time, so it is recommended that
you don't try getting them during this time.
Nodes in an LVM data array are stored in reverse co-ordinate order, so you should
always iterate in the order `z, y, x`. For example:
@ -170,11 +169,10 @@ time using `minetest.fix_light`.
## Example
```lua
-- Get content IDs during load time, and store into a local
local c_dirt = minetest.get_content_id("default:dirt")
local c_grass = minetest.get_content_id("default:dirt_with_grass")
local function grass_to_dirt(pos1, pos2)
local c_dirt = minetest.get_content_id("default:dirt")
local c_grass = minetest.get_content_id("default:dirt_with_grass")
-- Read data into LVM
local vm = minetest.get_voxel_manip()
local emin, emax = vm:read_from_map(pos1, pos2)