Help making a MM patch to surface attach all engines and copy the top node

[bigyihsuan]

I'm wanting to make a MM patch such that all engines are surface attachable, like the engines in ROEngines. I also want to make a copy of the top node (or move the bottom node) so that I can attach interstages to engines close to their attachment point, rather than to the engine bell.

Currently, I have this. It (should) set the attachRules such that it will allow surface attachment to other parts, and moves the bottom node to the top one. Would this work?

@PART:HAS[@MODULE[ModuleEngines]]:FINAL
{
	@attachRules = 1,1,1,0,0
	%node_stack_interstage = #$node_stack_top$
}

 

Edited October 31, 2023 by bigyihsuan

[bigyihsuan]

I've managed to get the engines surface attaching with the following patch:

@PART:HAS[@MODULE[ModuleEngine*]]:FINAL
{
	@attachRules[1] = 1
	&attachRules = 1,1,1,0,0
}

However, some modded engines have their "grab point" in the middle of the part, as seen below. The left engine is a correct Restock engine, but the right one is an incorrect BDB engine. Is there a way of fixing this?

[Watermel00n]

3 hours ago, bigyihsuan said:

Is there a way of fixing this?

Unfortunately to change this, you need to edit the model of the engines themselves.

[bigyihsuan]

8 hours ago, Watermel00n said:

Unfortunately to change this, you need to edit the model of the engines themselves.

Some folks on the /r/KSP discord said that using node_attach would fix it. Would this work?

@PART:HAS[@MODULE[ModuleEngine*]]:FINAL
{
	@attachRules[1] = 1
	&attachRules = 1,1,1,0,0
	%node_attach = #$node_stack_top$
}