[0.18.19] Biters trying to go through the water

[Highlander37]

Hello,
I noticed that group of biters near water trying go through the water even it's imposible. Then they get to the water they stop there.
I'm using only Bob's enemies mod, that can change biter behavior. I disabled this mod and saw, that this is raised by this mod.

Example without Bob's enemies mod:
https://yadi.sk/i/C8cXUZVYwDC24A
https://yadi.sk/i/VQZy_tMbePpcfA
https://yadi.sk/i/NJt5hR579-NS4w

savegame:
https://yadi.sk/d/TxE7JPCFlZYeyg

Most of the bites near the water sleep forever after trying to cross the water, and do not try to get around it.

[dyce]

If it is caused by a mod report the issue to mod author.

[Klonan]

The hovercraft mod changes the collision mask of water, and added a collision layer to all the biters

But the mod did not change the unit group collision mask, so the unit groups do not know that they should collide with the water

[Highlander37]

Klonan Thanks. Yes, look's like a bug of HoverCraft mod. I'll report bug report to author this mod.

[Klonan]

I decided to change this anyway.

It doesn't make sense anymore for unit groups to have a fixed collision mask.

In the next release the collision mask will be determined by the masks of the groups members.

[darkfrei]

I decided to change this anyway.

It doesn't make sense anymore for unit groups to have a fixed collision mask.

In the next release the collision mask will be determined by the masks of the groups members.

What if one unit group has "flying" (no collision) and normal units inside?

[Klonan]

I decided to change this anyway.

It doesn't make sense anymore for unit groups to have a fixed collision mask.

In the next release the collision mask will be determined by the masks of the groups members.

What if one unit group has "flying" (no collision) and normal units inside?

It uses a combination of masks that is most restrictive,

IE, it will only go where all of the members can go,

So in the case of a group of all flying units, they can fly and path over water
If it is mixed group of flying and ground units, they will only path over ground