diff options
Diffstat (limited to 'trainlogic.lua')
| -rw-r--r-- | trainlogic.lua | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/trainlogic.lua b/trainlogic.lua index dca2863..1ec27e0 100644 --- a/trainlogic.lua +++ b/trainlogic.lua @@ -601,15 +601,15 @@ function advtrains.try_connect_trains_and_check_collision(id1, id2) end --true when trains are facing each other. needed on colliding. -- check done by iterating paths and checking their direction ---returns nil when not on the same track at all. this distinction may not always be needed. +--returns nil when not on the same track at all OR when required path items are not generated. this distinction may not always be needed. function advtrains.trains_facing(train1, train2) local sr_pos=train1.path[math.floor(train1.index)] local sr_pos_p=train1.path[math.floor(train1.index)-1] for i=advtrains.minN(train2.path), advtrains.maxN(train2.path) do if vector.equals(sr_pos, train2.path[i]) then - if vector.equals(sr_pos_p, train2.path[i+1]) then return true end - if vector.equals(sr_pos_p, train2.path[i-1]) then return false end + if train2.path[i+1] and vector.equals(sr_pos_p, train2.path[i+1]) then return true end + if train2.path[i-1] and vector.equals(sr_pos_p, train2.path[i-1]) then return false end return nil end end |