Bridge problem/ (Solved)

[mcreator]

Hi

So I have been trying to fix this the last two days and I finally give up and need some help. I am new to this but from what I am seeing is that between every plank the character assumes that it is time to fall down so how can I make the fall detection thingy not react when the next plank is so close? I want to have actual physics based bridges later on but thought I would make some testing bridges and then this happened :P

[Raiox]

Hello,

I've tried this same exact thing too many times in the past with many failed attempts and time wasted. The stuttering is somewhat fixable through the collider being larger, but once I added the physics to the bridge, my character started either flying into the air because of the downward momentum the character makes when walking on the bridge would cause the bridge to spring back up, or I would fall through even more.

I think you would be better off faking the physics, which is a lot more work, but would provide more polish. I would put a plane in the shape of the bridge, so if there's some slack in the bridge where it dips down in the middle, make the plane run through the entire bridge. That way, not every box has a box collider.


Where the physics can come into play is if you think the bridge needs to break, create different break point triggers in the bridge and have the bridge break into a broken bridge model with physics on it.

If you're looking for the bridge to sway or wobble during movement, this can be done via animation and I would recommend faking it using invector's physics platform code to keep the player attached/parented. You can think about it in the same way as a player being on a truck/train top while the vehicle is shaking/bouncing as it moves.

Whenever I think about physics in my game, I always look at how BOTW would handle it.
Here's the closest thing they have to what you're trying to replicate I think... (forward to the end where link walks across)

Your example is more like the metal plates, but on a much smaller scale, but imagine a hundred of them under one parent.
I think it would result in physics like Gang Beast or Human Fall Flat. (They most likely have the type of bridge you're working on)
Not sure if I'm being helpful or not, but thought I would give my suggestion!

[mcreator]

Thank you for your answer

What I was thinking is if I could edit the code to make the "fall" trigger not react when it is on the bridge with a variable or bool or if I change the distance between the character and floor because that helped as well when I played with it but I want it to go back to normal when step of the bridge.

I'm going to try the larger colliders but hopefully someone is kind enough to share how they have done it.

It can be done as seen in the video though I do understand that the character used here lacks the things that are in invectors player

[rolfy]

You are over thinking this

It is a straight bridge with no dip or curve to it so a simple box collider would work just fine with it.

If you want a physics based bridge break it down into several simple box or capsule colliders. Mesh colliders may tend to be a little complex for physics based objects.

You could also try a generic trigger to turn off/on components on the character till you find which one is causing your problem.

The platform script should help with keeping the character associated with the moving object. I do think though that it is definitely a collider issue rather than script as shown with the simple bridge in your first vid.

[mcreator]

May 23, 2020 5:35:13 GMT Raiox said:

Hello,

I've tried this same exact thing too many times in the past with many failed attempts and time wasted. The stuttering is somewhat fixable through the collider being larger, but once I added the physics to the bridge, my character started either flying into the air because of the downward momentum the character makes when walking on the bridge would cause the bridge to spring back up, or I would fall through even more.

I think you would be better off faking the physics, which is a lot more work, but would provide more polish. I would put a plane in the shape of the bridge, so if there's some slack in the bridge where it dips down in the middle, make the plane run through the entire bridge. That way, not every box has a box collider.


Where the physics can come into play is if you think the bridge needs to break, create different break point triggers in the bridge and have the bridge break into a broken bridge model with physics on it.

If you're looking for the bridge to sway or wobble during movement, this can be done via animation and I would recommend faking it using invector's physics platform code to keep the player attached/parented. You can think about it in the same way as a player being on a truck/train top while the vehicle is shaking/bouncing as it moves.

Whenever I think about physics in my game, I always look at how BOTW would handle it.
Here's the closest thing they have to what you're trying to replicate I think... (forward to the end where link walks across)

Your example is more like the metal plates, but on a much smaller scale, but imagine a hundred of them under one parent.
I think it would result in physics like Gang Beast or Human Fall Flat. (They most likely have the type of bridge you're working on)
Not sure if I'm being helpful or not, but thought I would give my suggestion!

Well I got it working and all I had to do was increase the size of the colliders a tiny bit so they don't collide with each other and go crazy and the jumping part got solved by disabling snap to ground as shown in the video

[Raiox]

Looks very clean, nice work!

I'm a bit hesitant to turn off ground snap since it seems to make my character fall if he steps off something too big while running. I've messed with the other ground check settings, but they don't make a big difference.

It may be something to consider turning on and off depending on if the player is on the bridge. Your movement looks very smooth going up and down slopes which might be due to the movement speed, so it might not be needed.

Keep us updated with how your bridge and your game progress! 

[mcreator]

May 26, 2020 13:03:22 GMT Raiox said:

Interesting, I don't seem to have that problem. For me if I have snap on I can't walk inside a log for example.

I like the stile of your game and whats funny is that you also have a mask/masks since I'm working on a mask system as well. I assume you get abilities from them?

Unfortunately the bridge can't be too long without causing issues so I will look into different ways of fixing that or if there is an asset that might do it for me.