[Mod] Mesecons (= redstone) [GitHub] [minetest-mod-mesecons]

[RabbiBob]

Sorry, RabbiBob for not telling you. The problem is just that there are many mods using mesecons and I also don't know all of them, that's why I didn't post in all the topics.
But true, I could have told the ones I know and I will do that in case a second update is required (there are no plans however).

That wasn't directed to you, I actually was agreeing with your post as quoted. If I have a dependency on your mod (which I do), it's not your job to hunt me down. Life keeps me fairly busy, but I get emails from my mod thread if anyone has a comment and I check those out, so the mention was for people that use any mod that breaks - it helps the mod author if they report back to the mod thread itself, that's all.

Took me a bit to figure out what had changed, but I think I have it now

[monty_oso]

From Nand to Tetris in 12 steps (how to create a computer system from scratch)

http://www.youtube.com/watch?v=IlPj5Rg1y2w

http://www.nand2tetris.org/

https://mega.co.nz/#!PQQ21CpL!BWsL0GfjB ... aQtaHWPQgQ

[Nore]

Suggestion: use a queue instead of a stack to process signals, so that signal that have more gates in their way are more delayed than others. Without that, it is very difficult to build shift registers or things like that.

[Jeija]

Using a queue conflicts with pistons, I made that model theoretically and also doesn't work practically.

So, why not only use a queue for gates / the microcontroller?
There is no proper way to describe e.g. a microcontroller's behaviour with implemented queue (something complicated with multiple ports receiving a signal and therefore multiple queue entries was the issue if I remember correctly).
If you succeed exactly describing a microcontroller's behaviour when using a queue, there must also be a way to code that...

[Nore]

The idea is that you update all changes for a single node at once (that is, the microcontroller would only get one signal).

[Nore]

If you don't do it, I have another useful idea: a synchronizer circuit. It would fire at every server step, save state and after all synchonizers have saved state, it would update its state.

[Temperest]

Nore: you can make synchronizers using multiple edge-triggered D-FFs connected to the same clock.

Here is a basic circuit diagram:

[socramazibi]

Bug piston sticks , I can not create it .



thanks

[Temperest]

Thanks for reporting that!

I fixed it in commit 536c77330b7628cfdf17223cffa8d78b516f239d. If you download the mod again, you will have the fix.

[Nore]

Yes, but how do you create edge-triggered D flip-flops without synchronizers?

[Nore]

What you could do instead of a queue is instant delayer (with minetest.after(0,...)), so that it is updated right after everything else has finished.

[Temperest]

Edge triggered D FFs can be made using a microcontroller/luacontroller. Alternatively, by using a faster internal clock on an MS FF plus XORing the two internal values (if you don't want to use microcontrollers).

[Nore]

Could you explain the second more precisely please? I can't figure it out.

[Temperest]

Sure thing, here is a logic diagram of an edge triggered D-FF:



Each of the D-FFs in the diagram are level triggered, but the MS-FF feeds into the enable pin of the D-FF only upon an edge. Therefore the net result is that the circuit acts like an edge triggered D-FF.

Let me also mention that it triggers in both rising AND falling edges.

INTOSC should be about twice or more the frequency of the synchronizer clock to be effective.

This circuit could probably be made smaller, I just made it up as I went along.

In any case I strongly recommend the luacontroller for this. Recent git versions get their output states queued, in fact.

[Jeija]

Anyway keep in mind that the queue is experimental - needs a lot of testing, and I cannot promise it will stay. I hope I can release at least some documentation about the luac today.

[Jeija]

I just wanted to inform you that mesecons.net/luacontroller is now online.
There you can find lots of information about the luacontroller and programming it. We still need some testing, but the luacontroller will hopefully get merged quite soon.

I am looking for screenshots or little videos for promotion of mesecons, just in case someone has something they want to share.

[BenAmaranth]

Interesting dual piston bug, I was trying to push up a steel door on two up pistons and when I turned the pistons off, the door stayed in place and became completely undiggable, leaving the bottom half of a door that doesnt even open. Im guessing it has to do with the node ownership properties of a steel door. (I was reading about the dual piston sand bug earlier in the thread)

Also, now how do I get rid of this damn half door?

EDIT:

I tried putting another door under it and it pushed the piston down instead of pushing both up. o.o

I dont know what this means, but I find it fascinating.

[rarkenin]

Is the bug where two stacked pistons powered from the same circuit will crash Minetest, and won't allow the server to safel restart, still a bug?

[Temperest]

It's been fixed for a while now. If you come across any other piston bugs, though, do let us know.

[Jordach]

Hehe, I've been working on a 3x 7 segment display two byte adder.

http://imgur.com/a/9Sl4O Concurrently its WIP so dont expect much.

[jojoa1997]

could you please make the recipe for pressure plates so it doesnt interfere with other mods.
XXX
XXX
CCX

[Jeija]

What mod do the pressure plate recipes conflict with?
Your suggestion somewhat looks like the current recipes...

[jojoa1997]

It conflicts with stairs plus. I am saying make that recipe override the one spot of stairplus's recipe

[Jeija]

Well, it's the same recipe like in minecraft, so I'm not going to change it.
When comparing forum topic length (44 pages mesecons vs 3 pages stairsplus) you also need to notice that likely more people use mesecons than stairsplus.
Why wouldn't stairsplus change its recipe?

[meldrian]

I just want to say, great mod. I'll build some indoor light-system in my cave so i can switch the light on and off. mesecons enhances minetest a lot and i just want to say: Thank you