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Document fix 0a982b6356 

Add comment that explains why fix was necessary
master
orwell96 2018-10-29 23:51:41 +01:00
parent 0a982b6356
commit fbed4e29d1
1 changed files with 10 additions and 0 deletions
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10
advtrains/trainlogic.lua
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@ -246,6 +246,16 @@ function advtrains.train_ensure_init(id, train)
if not train.last_connid then
atwarn("Train",id,": Restoring path: no last_connid set! Will assume 1")
train.last_connid = 1
--[[
Why this fix was necessary:
Issue: Migration problems on Grand Theft Auto Minetest
1. Run of this code, warning printed.
2. path_create failed with result==nil (there was an unloaded node, wait_for_path set)
3. in consequence, the supposed call to path_setrestore does not happen
4. train.last_connid is still unset
5. next step, warning is printed again
Result: log flood.
]]
end
local result = advtrains.path_create(train, train.last_pos, train.last_connid or 1, train.last_frac or 0)