Scratch

There are no slopes, though.

Use two sensor colours on the bottom edges of the sprite (they don't have to be very different from the sprites natural colour) and use

when gf clicked
set [unsure] to (1)
forever
  if <<color [#FF0000] is touching [#000000]?> and <not<color [#FFFFFF] is touching [#000000]?>>>
    if <(unsure) = (1)>
      switch to costume (relevant costume)
      set [unsure v] to (0)

and you just dupe that code, it basically detects what corners are touching what and switches costume/direction accordingly, (unsure) is to detect if it's already set, thereby stopping it flickering. Unsire would need to be reset whenever you're not touching a platform. Oh BTW this only works for 45 135 etc degrees

Yes, I know how to do that. I mean the one costume 45 degrees or less kind of slope detection. And instead of using costumes and sensors, you can just have it switch to a tiny slope detection costume, say a few pixels, and duplicate something like
[if<touching color black>]
[change y by(insert number here)]
[change [direction^] by (insert number here)]

Then, do the same for the other side, then do that for

[if<not<touching color black>>]
[change y by (-insert number)]
[change [direction^] by (insert number)]

Thn add all those up and average them together. I think that's what you mean sort of but that's not
What I'm trying to do.

But it's an engine  . It's supposed to be a base you build upon. And that script might take 15-30 minutes to get right and perfect.

zubblewu wrote:

I saw your project. And I'll go write a quick script.

Edit: This could take a while, it'll probably involve a lot of trig

unlikely, trigonometry is totally unnecessary, id't just be either sensors or variables

zubblewu wrote:

I mean with moving based on the slope. You'll see when i finish it.

What v = r*w?
velocity = distance to contact point * angular velocity

amcerbu wrote:

And this is why I recommended array-based platforming.  Slope detection is basically done for you; that is, the programmer can specify the exact shape of each type of tile.  If I had  finished the platforming base in that project I linked you to, I would have implemented 34 different tiles (including more sloped surfaces, and even rounded ones), but I ran out of time/energy/enthusiasm/Squeak's memory.

Yep. What I mean, though, is using arctangent to predict the direction based on the slope, and changing the xvel by the cosine of the direction, creating realistic slope physics. I would have finished it in a few minutes but my frien and I are going to a concert and didn't have a chance to finish the last bit and test it. I'll probably post it at about 10 or 11 or sometime tomorrow.

Judging by the scripts it is capable to go up a 45 degree angle.

Bump. And please ignore the rest of the posts.