Add part to vessel during flight

[flywlyx]

Is it possible to add a part to the active vessel during flight? If not, is it possible to create a vessel from thin air and dock it to our vessel immediately(which is an alternative way)?

[ThreePounds]

Yes. By editing the safe file. You have to look into one of the bottom most scenarios called FLIGHTSTATE{} and find the craft in question. It's best if you replace the entire vehicle definition with one from a modified craft you just launch for that very purpose. Alternatively, you can do the second thing you described and put the vessel you want to dock onto the launch pad and then replace the orbital information in the save file with the orbital information from the first craft changing just the mean anomaly. They'll be in the same orbit after you load the file, just separated by the number of degrees you chose.

[Benjamin Kerman]

Or you can just grab the Orbit from the first vessel and remove it, then add the new vessel with that Orbit. 

[Aelfhe1m]

Are you wanting to write code to do this as part of a plugin? If yes then you could refer to some existing examples:

38 minutes ago, flywlyx said:

Is it possible to add a part to the active vessel during flight?

KIS does this (see here).

38 minutes ago, flywlyx said:

If not, is it possible to create a vessel from thin air and dock it to our vessel immediately(which is an alternative way)?

Routine Mission Manager can spawn a docked vessel (source is bundled in download see routine.cs for docking code).

For other references for spawning vessels in specific locations: see mods like Contract Configurator, Extraplanetary Launchpads, Ground Construction.

[flywlyx]

21 hours ago, Aelfhe1m said:

Are you wanting to write code to do this as part of a plugin? If yes then you could refer to some existing examples:

KIS does this (see here).

Routine Mission Manager can spawn a docked vessel (source is bundled in download see routine.cs for docking code).

For other references for spawning vessels in specific locations: see mods like Contract Configurator, Extraplanetary Launchpads, Ground Construction.

Thank you, this is very helpful!

 

21 hours ago, Benjamin Kerman said:

Or you can just grab the Orbit from the first vessel and remove it, then add the new vessel with that Orbit. 

For landed vessel, place the vessel will always result in some issues...