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[Ricky]

why isnt there one-way doors? it would be so easy to have one way doors, and have a very effective impact on the game

[j0nas]

It would be cool to have, but would it really be that great?

[NW_Kohaku]

Given the inability of doors to stop pathing from animals, I have to wonder about the actual traffic-directing abilities of a one-way door. 

I also have trouble seeing how it would be coded, as not all doors are in a one-tile-wide hallway with only two open tiles that creatures could stand on, making the door only "openable" from one tile, or "leavable" into another tile. 

If, for example, you have a room off of a hallway, and a set of double doors you want to be one-way, you could have seven empty tiles near this one-way door, if you are including the other one-way door.

[culwin]

why isnt there one-way doors? it would be so easy to have one way doors, and have a very effective impact on the game

Well, there is no such thing in real-life physics as a 1-way door.  Mostly.
I'm not sure if it would improve or hurt pathing?

[kalida99]

why isnt there one-way doors? it would be so easy to have one way doors, and have a very effective impact on the game

Well, there is no such thing in real-life physics as a 1-way door.  Mostly.
I'm not sure if it would improve or hurt pathing?

A one way door is a push door on one side, and the other side has no way to pull.  You could simply use the "one way ramp", or pressure plates... but that could cause annoyances...

[thijser]

If I'm correct about pathfinding it works by grouping areas that can/can't be reached. A door like this will probably mess up that system.

[jimi12]

why isnt there one-way doors? it would be so easy to have one way doors, and have a very effective impact on the game

Well, there is no such thing in real-life physics as a 1-way door.  Mostly.
I'm not sure if it would improve or hurt pathing?

Fire doors? Door with a handle only on one side? I don't see the physics laws being broken there.

[cyks]

One way streets really work both ways if you are careful.

[NW_Kohaku]

Yes, if it's "can only be opened from one specific adjacent tile", then that doesn't mean that it would be impossible for creatures to try to path through that door, and just happen to walk through when the door was already open for one reason or another (DARN YOU, MONARCH BUTTERFLIES!), so it could still be two-way.

Of course, that depends on how pathfinding finds this at all... like I'd said before, animals do not recognize that a door is not closed to pets when pathfinding currently, resulting in animals that continuously waste CPU trying to pathfind through the same doors over and over again.

That makes this all come down to the pathfinding issue, which is a serious problem that needs to be addressed...

[Tehran]

Check the wiki. I remember reading about a bug that had to do with ramps and constructed floors which resulted in a 1-way ramp. I dunno if the bug has been fixed or not.

[forsaken1111]

animals do not recognize that a door is not closed to pets when pathfinding currently, resulting in animals that continuously waste CPU trying to pathfind through the same doors over and over again.

My cat does this in real life. I don't see the problem.

[NW_Kohaku]

My cat does this in real life. I don't see the problem.

Funny, my cats are capable of taking advantage of several in the doors in my house not being able to fully shut, and are capable of snaking a paw under the doorframe to pull the doors open when you want to keep them in/out.  If it's a door they can't open, they just do the next best thing: pound on it constantly for half an hour in the middle of the night while "raow"ing as loud as they can until someone who was only half asleep gets so annoyed they open the door for them just to shut them up.