ValdemarF question about portals

[latent ember]

I am not sure what you are asking here.

Can you give us more details?

@lilac flame

[lilac flame]

Sure, so I have a portal system that looks like this, where the first number is a "pair index", so 1.1 tp's to 1.2 and so on

The teleportation works, but I want it to work so each portal has a front and back basically, where if you enter the front of portal 1.1 you get out of the front of portal 1.2

The issue atm is that no matter which side of 1.1 you enter, you get out of the front of 1.2

Hope that explains it better

[latent ember]

You want the player to be able to spawn in the same direction as the enter a portal. Is that what you want?

If the guy enters from the left, he gets out from the left vice-versa

[lilac flame]

Not really, should've explained that, because portals can be rotated lol

The purple things are portals

So front would be the rotation of the portal, and back would be the opposite

[latent ember]

If you get in from the front you get out from the front?

[lilac flame]

Exactly

of the other portal ofc

[latent ember]

Is it an instant tp?

[lilac flame]

Yes

The code I pasted works for the tp, just not rotation, not sure how to handle it

[latent ember]

Why not just place down an empty game object at the front of a portal and tp the player there if he gets in from the front?

Same thing for the back

[lilac flame]

Ohhhh yeah, so each portal has two points

Would work yeah

I'll try

[latent ember]

Is there more than a back and front?

[lilac flame]

No

I thought what you meant is one object for the front and one for the back?

[latent ember]

And the portal should be a prefab. You are gonna save so much time like that

[lilac flame]

True

[latent ember]

I was asking if you wanted the position to be relative from the place you get in from the place you get out.

[lilac flame]

No, only rotation

The position is just the position of the other portal

[latent ember]

Like that :

If you always get out from the same place, that would be fine.

And I don't think the player is going to realize

Specially if you don't allow them to see through portals

[lilac flame]

Not sure what you mean

[lilac flame]

But the rotation should change, based on side entered, this is important because you can also shoot through them, so it also changes the bullets direction

[latent ember]

I think you will be ok

[lilac flame]

They will only be one-sided then

[latent ember]

Ho wait no. I just realized the speed of the bullet won't be ok

That doesn't solve anything 😂

I am dumb

2 sec I got to test something

[lilac flame]

The speed will be the same, but the direction will be the same, if shot through either side, which is what I wanna fix

[latent ember]

Are the bullet always going the same speed?

[lilac flame]

Yes

No acceleration

[latent ember]

My old project is openning, give me some time

[lilac flame]

Alright

[latent ember]

I got a solution all written down

You will need to reset the velocity of the bullet

And multiply it by a Vector3 describing the direction at which the portal is going.

@lilac flame did you get what I meant?

[lilac flame]

This will just make the bullet go in the direction of the portals rotation though?

No matter what

[latent ember]

bulletRigidBoddy.AddForce(direction.normalized * BulletForce, ForceMode2D.Force);

[latent ember]

Ho yeah

I think you get get the velocity using rigidbody.velocity, normalize it, then add it to the direction normalized, and then normalize again.

You multiplie by the old velocity the number you get from that.

I think

that might work

Did you get what I meant? @lilac flame

I am not sure about the math, but I am pretty sure you need to use the normalized velocity of the bullet at some point.

[lilac flame]

Sorry didn't see you sent a message

Found a fix, pretty much

            Transform otherPortal = FindOtherPortal(firstPortal);
            Transform goTransform = go.transform;

            Vector3 firstPortalForward = firstPortal.forward;

            float relativeRotationY = Quaternion.FromToRotation(goTransform.forward, firstPortalForward).eulerAngles.y;

            Vector3 finalPosition = otherPortal.position;
            Quaternion finalRotation;
            if(relativeRotationY < 90) { // Entered from front
                finalRotation = otherPortal.rotation;
            } else { // Entered from back
                finalRotation = Quaternion.Euler(otherPortal.rotation.eulerAngles - new Vector3(0, 180, 0));
            }

            goTransform.SetPositionAndRotation(finalPosition, finalRotation);

Way more complicated than what I anticipated

[latent ember]

And the bullet go where they are suppose to ?