Merge block not functioning correctly for airtight doors

Darren W. Pearce (Dwolfyone) shared this bug 2 months ago
Reported – Awaiting fix

I came to build an airtight door on a station in space as I have done in the past, and found that when using a merge block to link the two grids together - the door grid is now converted into a station grid even when the merge is undone.


So the door won't move until the whole grid is converted into a ship.


An example of the behaviour, though not with the airtight door, is here using a simple piston-merge block to connect to a station grid merge block.


When the blocks merge, the piston-merge is now locked in place until the whole grid is converted to a ship, or you grind off the merge, and the top part of the piston (as seen here).


https://gamerdvr.com/gamer/wolf1969/video/157962234


Obviously having station based custom airtight doors is a thing we use a lot, so this breaks those builds if we have to convert to ship every time to unlock them.

Replies (3)

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An update on the issue, it only seems to affect a grid that's been cut from the main station grid to make a new station. The merge blocks work OK when it's connected to the primary station.

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Having done further experimentation on this, it appears to be connected to voxels for definite. If your station is intersecting voxels, or even a small amount (small grid block size of voxels) the merge will work, since it always treats that grid as a station. Cutting the grid and pasting it into voxels also appears to work.


I've tested this with a simple piston driven merge block, to merge block on grid rig, and it works OK.


So it's definitely something to do with how merge blocks work when a station is devoid of voxels, and free floating in space.

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Hello Engineer,


Could you please upload the world with this issue to mod.io? That would help us reproduce the issue.


Thank you.


Kind regards,


Keen Software House: QA Department

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Hey, here you are: https://spaceengineers.mod.io/red-ship-merge-block-issue-test There are several test rigs for this on the Red Ship map, and they're listed in the description of the world.


https://spaceengineers.mod.io/red-ship-merge-block-issue-test

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Hello Engineer,


Thank you the quick reply, we have been able to reproduce and verify behavior as you've described. We've reported it to our internal system.

We will update this thread when we have more information.

As a temporary solution we suggest manually converting subgrids back to Ship after Merge blocks are disabled/disengaged.


Thank you.


Kind regards,


Keen Software House: QA Department

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