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Add check for unknown nodes.

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* Check if node has a definition table before attempting to evaluate its
  attributes.
* Define local variable to cache multiple accesses to `registered_nodes[]`
  and improve readability.
This commit is contained in:
kabou 2022-03-09 02:23:18 +01:00
parent 95cfa43483
commit 962500b189
1 changed files with 4 additions and 2 deletions
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6
mods/ENTITIES/mobs_mc/slime+magma_cube.lua
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@ -16,7 +16,8 @@ local spawn_children_on_die = function(child_mob, children_count, spawn_distance
if not eject_speed then
eject_speed = 1
end
local mother_stuck = minetest.registered_nodes[minetest.get_node(pos).name].walkable
local mndef = minetest.registered_nodes[minetest.get_node(pos).name]
local mother_stuck = mndef and mndef.walkable
angle = math.random(0, math.pi*2)
local children = {}
for i=1,children_count do
@ -26,7 +27,8 @@ local spawn_children_on_die = function(child_mob, children_count, spawn_distance
-- If child would end up in a wall, use position of the "mother", unless
-- the "mother" was stuck as well
local speed_penalty = 1
if (not mother_stuck) and minetest.registered_nodes[minetest.get_node(newpos).name].walkable then
local cndef = minetest.registered_nodes[minetest.get_node(newpos).name]
if (not mother_stuck) and cndef and cndef.walkable then
newpos = pos
speed_penalty = 0.5
end