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Defensive checks (#4328) 

Fixes rare crashes related to some effects

Reviewed-on: https://git.minetest.land/VoxeLibre/VoxeLibre/pulls/4328
Co-authored-by: the-real-herowl <wiktor_t-i@proton.me>
Co-committed-by: the-real-herowl <wiktor_t-i@proton.me>
the-real-herowl 2024-05-26 15:32:41 +00:00 committed by the-real-herowl
parent 8feecf2492
commit cae554bc2b
1 changed files with 10 additions and 3 deletions
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13
mods/ITEMS/mcl_potions/functions.lua

@ -372,7 +372,9 @@ mcl_potions.register_effect({
playerphysics.add_physics_factor(object, "gravity", "mcl_potions:slow_falling", 0.5)
end,
on_step = function(dtime, object, factor, duration)
local vel = object:get_velocity().y
local vel = object:get_velocity()
if not vel then return end
vel = vel.y
if vel < -3 then object:add_velocity(vector.new(0,-3-vel,0)) end
end,
on_end = function(object)
@ -430,7 +432,9 @@ mcl_potions.register_effect({
return S("moves body upwards at @1 nodes/s", factor)
end,
on_step = function(dtime, object, factor, duration)
local vel = object:get_velocity().y
local vel = object:get_velocity()
if not vel then return end
vel = vel.y
if vel<factor then object:add_velocity(vector.new(0,factor,0)) end
end,
particle_color = "#420E7E",
@ -457,6 +461,7 @@ mcl_potions.register_effect({
end,
on_end = function(object)
local meta = object:get_meta()
if not meta then return end
meta:set_int("night_vision", 0)
mcl_weather.skycolor.update_sky_color({object})
end,
@ -499,7 +504,9 @@ mcl_potions.register_effect({
mcl_weather.skycolor.update_sky_color({object})
end,
on_end = function(object)
object:get_meta():set_int("darkness", 0)
local meta = object:get_meta()
if not meta then return end
meta:set_int("darkness", 0)
mcl_weather.skycolor.update_sky_color({object})
object:set_sky({fog = {
fog_distance = -1,