Pretty simple yet super effective: If index rule has any Pos 0 0 for non-empty tile, then it is flagged to skip all the empty tiles. And vice versa. In many cases it will significantly speed up the process, especially when using big automappers on huge maps.

9951b2a optimize automapper a bit - Aerll 6e0e127 Merge #1247 - bors[bot]

Sometimes people needs to use collision line like a sniper red dot for hisself But it may occur issues for other players. Some of them even will not play with you while you "blinding" them by colline Id be happy if Ill have two different (one for other players and other for myself) collines or if I`ll have possibility to turn off sending colline to server P.s.: my reason of always using it - I can easily detect rare mouse lags

ryozuki said its ok if i add myself here.

3296153 changelog - fokkonaut 6ddbffb Merge pull request #53 from fokkonaut/master - def-