How do you build a self-propelled rocket with pistons? I don't like the piston -lines when they go up. How do you make a self propelled one like LBPhacker's piston sing bomb? If u know, please tell me the mechanism, too.
I have a rocket / missile save that, from what I understand, works the way you might be wanting it to, but you'd need to probably dissect it and rebuild it with the desired direction in mind, because I think it breaks when I try to rotate it. I'm not quite sure how to explain it, but in essence, I think you need to have two sets of pistons with some means of triggering them one after the other, with one pushing a particle or two further than the other pulls in, with them sharing the same two lines of FRME sandwiched together. One line of FRME, closer to the back, I think, has to have a tmp and / or life of 1 (I put both in, I think).
In short, take a look at these, take them apart and try reverse engineering them. Check the values on each component of it and such. There's most likely someone who can explain how PSTN movers work a lot better than me, but this is sort of how I understand it.
The game has a wiki available here: https://powdertoy.co.uk/Wiki.html. You can find there all the necessary information about the individual elements. The difference between FRME and lighter FRME (TMP >= 1) is that when the piston moves, light FRME does not "stick" to the elements and only pushes them.