From ba7eb19317651e4e02a8e9cec741192b3141f93e Mon Sep 17 00:00:00 2001
From: Skgland <bb-github@t-online.de>
Date: Fri, 18 Dec 2020 19:21:39 +0100
Subject: [PATCH] Prevent the symptoms of Issue #33

Try to prevent the crash from issue #33 by
replaving nil velocity or acceleration with (0,0,0).
This does not fix the underlying cause of them being nil,
but should prevent the crash.
---
 luaentity.lua | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/luaentity.lua b/luaentity.lua
index 8385264..6e75eeb 100644
--- a/luaentity.lua
+++ b/luaentity.lua
@@ -340,6 +340,8 @@ local move_entities_globalstep_part2 = function(dtime)
 			entity._velocity = master_entity:get_velocity()
 			entity._acceleration = master_entity:get_acceleration()
 		else
+			entity._velocity = entity._velocity or vector.new(0,0,0)
+			entity._acceleration = entity._acceleration or vector.new(0,0,0)
 			entity._pos = vector.add(vector.add(
 				entity._pos,
 				vector.multiply(entity._velocity, dtime)),