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Add check for unknown nodes.

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* Check if node has a definition table before attempting to evaluate
  attributes.
* Define local variable to cache multiple accesses to `registered_nodes[]`
  and improve readability.
* Reduce redundant `== false` condition check.
This commit is contained in:
kabou 2022-03-09 00:01:23 +01:00
parent 52333cea0f
commit b9c2c3bd0a
1 changed files with 4 additions and 2 deletions
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6
mods/ENTITIES/mobs_mc/3_shared.lua
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@ -50,8 +50,10 @@ mobs_mc.make_owner_teleport_function = function(dist, teleport_check_interval)
local telepos_below = {x=telepos.x, y=telepos.y-1, z=telepos.z}
table.remove(check_offsets, r)
-- Long story short, spawn on a platform
if minetest.registered_nodes[minetest.get_node(telepos).name].walkable == false and
minetest.registered_nodes[minetest.get_node(telepos_below).name].walkable == true then
local trynode = minetest.registered_nodes[minetest.get_node(telepos).name]
local trybelownode = minetest.registered_nodes[minetest.get_node(telepos_below).name]
if trynode and not trynode.walkable and
trybelownode and trybelownode.walkable then
-- Correct position found! Let's teleport.
self.object:set_pos(telepos)
return