server crash (in combination with draconic mod)

[Former user]

attempted to shoot an arrow at a dragon

2021-04-22 16:12:38: ERROR[Main]: ServerError: AsyncErr: ServerThread::run Lua: Runtime error from mod 'x_bows' in callback luaentity_Step(): Runtime error from mod 'x_bows' in callback luaentity_run_simple_callback(): /opt/minetest/bin/../builtin/common/vector.lua:60: attempt to index loc
2021-04-22 16:12:38: ERROR[Main]: al 'v' (a nil value)
2021-04-22 16:12:38: ERROR[Main]: stack traceback:
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../builtin/common/vector.lua:60: in function 'round'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/x_bows/arrow.lua:139: in function </opt/minetest/bin/../mods/x_bows/arrow.lua:138>
2021-04-22 16:12:38: ERROR[Main]: [C]: in function 'punch'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/draconis/api/api.lua:475: in function 'fire_breath'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/draconis/api/hq_lq.lua:194: in function 'func'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/mobkit/init.lua:629: in function 'execute_queues'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/mobkit/init.lua:848: in function 'stepfunc'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/mob_core/api.lua:1147: in function 'on_step'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/draconis/api/api.lua:978: in function 'func'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../builtin/profiler/instrumentation.lua:106: in function 'func'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../builtin/profiler/instrumentation.lua:106: in function </opt/minetest/bin/../builtin/profiler/instrumentation.lua:100>
2021-04-22 16:12:38: ERROR[Main]: stack traceback:
2021-04-22 16:12:38: ERROR[Main]: [C]: in function 'punch'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/draconis/api/api.lua:475: in function 'fire_breath'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/draconis/api/hq_lq.lua:194: in function 'func'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/mobkit/init.lua:629: in function 'execute_queues'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/mobkit/init.lua:848: in function 'stepfunc'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/mob_core/api.lua:1147: in function 'on_step'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../mods/draconis/api/api.lua:978: in function 'func'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../builtin/profiler/instrumentation.lua:106: in function 'func'
2021-04-22 16:12:38: ERROR[Main]: /opt/minetest/bin/../builtin/profiler/instrumentation.lua:106: in function </opt/minetest/bin/../builtin/profiler/instrumentation.lua:100>

[Juraj Vajda]

Add check for _old_pos, seem to be nil sometimes

PR: https://bitbucket.org/minetest_gamers/x_bows/pull-requests/1/1-add-check-for-_old_pos-seem-to-be-nil

[Juraj Vajda]

Since the Issue creators account was deleted, marking as resolved.