Turret tile layering fix

[budg3]

This removes the location": "on_roof" from the turret_mount and instead adds it to the turrets in vanilla, Vehicle Additions Pack and Tanks and Other Vehicles instead. This potentially fixes #23646 but requires some testing in case this breaks something.

[BorkBorkGoesTheCode]

First impressions: it doesn't cause the turrets to shoot the vehicle they're mounted on, but it does make the turret mount invisible.

It's working so far.

Dismounting and remounting both turret mount and mounted gun are working.

[budg3]

Is there a location slot that can be used instead for the turret mount? I tried keeping on_roof on the turret mount and adding it to the turrets, but that makes the game complain about multiple parts being in the on_roof slot.

[BorkBorkGoesTheCode]

@budg3 Superficially the game works as intended when the mounted guns are given the on_roof. It would be good to add a new layer though.

[Night-Pryanik]

Damn, missed that one. location: on roof could be only added to turret abstract, there's no need to manually add it to every turret as they all use copy-from mechanic.

[ZhilkinSerg]

Damn, missed that one. location: on roof could be only added to turret abstract, there's no need to manually add it to every turret as they all use copy-from mechanic.

I can merge PR today if you make it.

[Night-Pryanik]

@ZhilkinSerg #23768.

[xottoplus]

blazemod's blob turrets are missing of on_roof flag. (blaze_blob_parts.json)
there isn't copy-from mechanic, so it must add to individual turrets.
some blob turret has location flag(center) already. this parts don't need to add on_roof.

[budg3]

@xottoplus
Thanks for the heads up! Issued a new PR #23853