Gun, ammo and projectile things when using direction or direction_only

[Xorimuth]

Some specific things from viewtopic.php?p=553490#p553490

https://wiki.factorio.com/Prototype/Pro ... ction_only an explanation that it overrides the end position of the projectile

https://wiki.factorio.com/Types/AmmoType#target_type target_type="direction" will ignore gun's range

previous 2 points could also be noted at the gun range definition: https://wiki.factorio.com/Types/BaseAtt ... ters#range

viewtopic.php?p=553522#p553522 possible documentation error