Enemies that follow walls

[EE]

I made an example using my suggested idea(funny story, I discovered that the old project I was talking about used a completely different method), now I'm very tired and very new to uploading examples, so here;

http://www.clickteam.com/epicenter/ubbthreads.php?ubb=showflat&Number=230605&#Post230 605

The movement "jerks" in the leftmost/rightmost point of the cross-shape. I have an idea on how to fix it, however, I'm way too tired right now. Be sure to check the animations and values of the crawler so you understand what's going on. Sorry for the lack of proper commenting!

//EE

[AimeeExorcist]

Wow thanks guys, loads to work with there. EE, I tried your first suggestion and got stuck at some point (the enemy went along the top of a box, then the side, then the bottom, then.. flew off into space). I haven't tried your expanded one but I'll have a play around with it as there's some stuff in there I don't understand much yet, like the use of sine/cosine and the add to debugger command..

Eliyahu, yours seems to be working nicely so I think I'll base it around that for now. I want to make it so that rather than a single object, it's a bunch of bubble-like enemies that crawl around as a group, and I think I can handle the rest of it. I'll upload it when done

[EE]

Ok, however, if you're only in need of 4 directions 50~ events instead of like seven is quite overkill.
Of course, you decide! ^^
You're the one making the game! ^^

I'm gonna update my example when I get the time, fix the jerk and add smoother direction changes.

//EE

[Eliyahu]

Agreed with EE, the example I posted is for following patterns that can be square, diagonal, rounded, etc. If all you need is 90 degree angles it's simple:

Move forward until you hit a wall
Turn 90 degrees
Repeat

[JacobXScum]

I have this working perfectly in my game. And yes it was me that contributed before, or at least i did a few years back. I'll try to get up an example if i can extract it out of my game.

[JacobXScum]

Mine doesn't require any advanced math, but it'll do both inside and outside movement smoothly, in the cardinal driections.

[Jacob]

Props to Jacob (?).

Ah yes, I remember that. I made the engine, and you managed to kill the bug that was plaguing me to the point where I released it pretending I hadn't seen it :P
Teamwork!