Making MooMoo.io alike movement physics

[toxic tangle]

alright

[pale tartan]

Oh I can my bad

[split magnet]

you would use the ontriggerstay2d, and im not to sure but the trigger is either on the player or the tree. its probably on the tree so if you still have the 2 colliders on the the tree then use that. 😅

[pale tartan]

no I only kept one collider on tree

[split magnet]

then you would check if the trigger touches another RB then if it does slow it down until 0 by using its velocity

[pale tartan]

and added the big collider for that movement to player

[pale tartan]

so like loop

[split magnet]

ah then remove the trigger on your player and put it on the tree, then just do as i said here #1288216306348326983 message

[split magnet]

no, you would slow it down by doing the opposing velocity

[pale tartan]

now in playermovement script

How would I detect if rb touched that

[split magnet]

although it probably uses overlap2d.circle on the player but a trigger would suffice for now

[split magnet]

use ontriggerstay2d

[pale tartan]

just to make sure if this is what u tellin me\

[celest sandal]

In moomoo the "triggers" actually push you away from them instead of just slowing you down

But if you don't need an exact replica then this will probably do

[pale tartan]

anything will do as long as it creates the same kind of illusion

idk what I wrote but would this do it ? haha

[toxic tangle]

dude i tried joints and it wont give u 2-3 vibrations 😦

i think u should just animate it

[pale tartan]

def not

[pale tartan]

idk this seems more of a solution to me than animating

animating confuses me kind

kinda

coz I want this to be more of a physics thing than just animation

[toxic tangle]

hmm yeah

[split magnet]

you would also put ontriggerstay2d on the tree btw

so a new script

[pale tartan]

oh i got it

just made sure if it detects and yes

[split magnet]

and here is the documentation for it https://docs.unity3d.com/ScriptReference/MonoBehaviour.OnTriggerStay.html

[pale tartan]

thankk u

[toxic tangle]

no need to thanks bro

[split magnet]

well im guessing you have the ontriggerstay2d script on the tree so now you just need to use its collider's rigidbody's velocity and slow it down

[pale tartan]

how would I like

slow it down

[split magnet]

you could either add a force opposite of its velocity to slow it down or use its velocity directly to slow it down

[toxic tangle]

dude good news

i got how u can do it

that too very easy

add a spring joint and this will work perfectly

give it a try

[pale tartan]

another joint thing xdd

[toxic tangle]

i tried it

[pale tartan]

ok

i'll add to other tree

[toxic tangle]

its very easy

and it will work

[split magnet]

why are you trying to give him wrong information?

[pale tartan]

wth dis

[pale tartan]

trying out won't hurt anyway right

but if u say

this won't work

[toxic tangle]

noo i tried it just now

[pale tartan]

i'll continue w that

[split magnet]

a spring joint will make the player not move, as it is a spring

it will act like a spring but keep it locked at a certain point

joints will not work in this case

so quit it with joints

[toxic tangle]

let me show u

[celest sandal]

Slowing down the velocity will also make you kind of stick to the tree when moving away which I dont think is good

[pale tartan]

oh yeah

i think

[split magnet]

then use addforce

[pale tartan]

pushing out will work

[celest sandal]

I would just add a force away from the tree

[pale tartan]

I just don't think like

[toxic tangle]

see

[pale tartan]

How to get the position player is coming from

[toxic tangle]

just 3 steps and done

[pale tartan]

like if I add addforce right

it takes vector

[split magnet]

thats not what he wants

[toxic tangle]

u can control the damping by fixing frequency

[split magnet]

you can clearly see that the tree is not using joints

[toxic tangle]

lmao yeah i forgot he is not using gravity

[split magnet]

but instead applying a force opposite of the RB velocity

[toxic tangle]

but can still work if he add force on the tree by the player

[split magnet]

you dont add a force on the tree

only to the player

[pale tartan]

Yeah

to the player

but like

To add force I should like tell

Where should I add force to right

[split magnet]

opposite to the RB velocity

[pale tartan]

realizing c# skills won't work in unity xd

[toxic tangle]

ohh my bad i thought he just want the shakiness of the tree to happen

[split magnet]

collision.attachedRigidbody.AddForce(-collision.attachedRigidbody.Velocity * Multiplier, Forcemode.force);

[pale tartan]

I did this

[pale tartan]

oh I could've just done -

now I feel so stupid

[split magnet]

then check if velocity is 0 or near 0 and stop applying the force

[pale tartan]

• Multiplier won't work

[toxic tangle]

hmm but i will still tell u to use spring joint lol anyways good luck guys :3

[pale tartan]

because then shouldn't multiplier be like vector2

[pale tartan]

ty

[split magnet]

no, its just a float

i would !learn how to use unity

[limpid widget]

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Over 750 hours of free live and on-demand learning content for all levels of experience!

[pale tartan]

oh yeah mb I fixed I had some other error

[celest sandal]

And that would pull you towards the tree when walking away from it

[split magnet]

yeah i see that, im thinking of a solution

[pale tartan]

don't really work

and it doesn't pull me to tree either

[celest sandal]

What I'd do is something like this (pseudocode) cs vec2 diff = characterPosition - treePosition addforce(-diff.normalized * someMultiplier)

diff is a vector pointing from tree to you

[split magnet]

thats most likely because your multiplier is 0

[pale tartan]

{
    collision.attachedRigidbody.AddForce(-collision.attachedRigidbody.velocity * multiplier, ForceMode2D.Force);
}```

[pale tartan]

its 5

[celest sandal]

How are you moving the character in the first place?

Are you using rigidbody.velocity?

[pale tartan]

yes

I use velocity

[celest sandal]

If you directly set velocity then it will override any addforce calls

[pale tartan]

float moveX = 0f;
float moveY = 0f;

//Player Rotate Lock.---------------------------------------------------------
if (Input.GetKey(KeyCode.X)) { if (PlayerRotates) PlayerRotates = false; else PlayerRotates = true; }
//Player Rotate Follows Mouse.---------------------------------------------------------------
if (PlayerRotates)
{
    Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
    transform.rotation = Quaternion.LookRotation(Vector3.forward, mousePos - transform.position);
}

//Sprinting.--------------------------------------------------------------
if (Input.GetKey(KeyCode.LeftShift) && stamina >= 2.2f && rb.velocity.magnitude > 0)
{
    //getting camera animation----
    animator.SetTrigger("Running");
    //speed becomes boostedSpeed----
    speed = speedBoost;
    //reducing stamina on cost of runcost---
    stamina -= runCost * Time.deltaTime;
    if (stamina < 0) stamina = 0;
    staminaBar.fillAmount = stamina / maxStamina;

    //new Color(234, 244, 84) - normal color.
    //run - new Color(187, 194, 79) - sprint color.

    staminaBar.color = new Color(187f / 255, 194f / 255, 79f / 255);
    //reseting Coroutine----
    if (recharge != null) StopCoroutine(recharge);
    recharge = StartCoroutine(RechargeStamina());
}
else
{
    animator.SetTrigger("EndRunning");
    speed = 30f;
}
//Movement On Keys.------------------------------
if (Input.GetKey(KeyCode.W)) moveY = +1f;
if (Input.GetKey(KeyCode.S)) moveY = -1f;
if (Input.GetKey(KeyCode.A)) moveX = -1f;
if (Input.GetKey(KeyCode.D)) moveX = +1f;
//PlayerMovement.----------------------------------------
Vector3 moveDir = new Vector3(moveX, moveY, 0f).normalized;
rb.velocity = moveDir * speed;```

[celest sandal]

addforce basically adds to the velocity

[pale tartan]

ohh

rb.velocity.addforce

and movedir*speed right

[celest sandal]

rb.addforce, but it's a bit more complex than that

[pale tartan]

makes sense

[celest sandal]

Just using addforce will make it pretty sluggish

[split magnet]

i mean if he wants to make it as close to the game its best to use addforce

you can feel it in the game

[pale tartan]

yeahh xdd

I defenitely doo

[celest sandal]

Just saying, there's a neat formula that I use for addforce:cs vec2 targetVelocity = // your movedirection * speed vec2 velocityDiff = targetVelocity - rb.velocity rb.addforce(velocityDiff * someMultiplier)

But sure you can try just adding the movedirection as force. See how it goes

[pale tartan]

what that someMultiplier would be

[split magnet]

any float you desire

but I would do what he said with the velocityDiff so you dont get pulled back to the tree

[pale tartan]

i like this movement a lot

more

but I do get pulled back now and I noticed that well too

[celest sandal]

Is this just addforce(movedir) or what I suggested?

[split magnet]

im guessing you are still using #1288216306348326983 message

[toxic tangle]

did it solved??

[split magnet]

not yet

[pale tartan]

this

oh

[pale tartan]

in the tree script

[celest sandal]

Replace the speed inside addforce with a different float. That float controls the "snappiness" of the movement

[celest sandal]

Like how fast you accelerate/decelerate

[pale tartan]

I see

[split magnet]

you would use #1288216306348326983 message

what osmal said in the tree script

[celest sandal]

The idea of the movement code I suggested is that if you are already moving at the target velocity, it won't add any force. This way you won't overshoot

[pale tartan]

Vector2 velocityDiff = targetVelocity - rb.velocity;
rb.AddForce(velocityDiff * acceleration);```

[pale tartan]

I see

[pale tartan]

how would I implement

that

[celest sandal]

That looks ok, now you just need to tweak acceleration to your liking

[pale tartan]

Yeah I did that too

[celest sandal]

But the "pushing away from trees" is still not there

[split magnet]

well exactly how you added what i showed you

[pale tartan]

private void OnTriggerStay2D(Collider2D collision)
{

    if (collision.attachedRigidbody.velocity != new Vector2(0, 0))
    {
        collision.attachedRigidbody.AddForce(-collision.attachedRigidbody.velocity * multiplier, ForceMode2D.Force);
    }
    Debug.Log("push out");
}```

[split magnet]

but instead of using -rb.velocity you use his method

[pale tartan]

ok wait

Something like this would work?

no

Im still getting pulled wait i'll try to fix

[split magnet]

so most likely

Vector2 diff = collision.transform.position //character position - transform.position //tree position
collision.attachedRigidbody.addforce(-diff.normalized * someMultiplier)

basically what diff does is make a new vector by comparing the character position by tree position

[pale tartan]

wym by this part
//character position - transform.position //tree position

Vector2 diff = collision.transform.position - gameObject.transform.position

like subtract them?

[split magnet]

yes and makes a vector from that

all // this is, is a comment

[pale tartan]

//Vector2 velocityDiff = targetVelocity - collision.attachedRigidbody.velocity;


Vector2 diff = collision.transform.position - gameObject.transform.position; //character position - transform.position //tree position


if (collision.attachedRigidbody.velocity != new Vector2(0, 0))
{
    //collision.attachedRigidbody.AddForce(velocityDiff, ForceMode2D.Force);
    collision.attachedRigidbody.AddForce(-diff.normalized * 45);
}
Debug.Log("push out");```

yeah and idk if it works

it doesn't seem to slow up

[pale tartan]

Ik now that

im good w c#

not good w unity library

[split magnet]

you should be getting an error

since you do not have a ;

at the end of diff

[pale tartan]

I do have

im not getting error

[celest sandal]

There's a ;, the comments just make it look like there isnt

[pale tartan]

yeah

I wrote this script now

 Vector2 velocityDiff = gameObject.GetComponent<Rigidbody2D>().velocity - collision.attachedRigidbody.velocity;


 Vector2 diff = collision.transform.position - gameObject.transform.position; //character position - transform.position //tree position
 

 if (collision.attachedRigidbody.velocity != new Vector2(0, 0))
 {
     //collision.attachedRigidbody.AddForce(velocityDiff, ForceMode2D.Force);
     collision.attachedRigidbody.AddForce(-velocityDiff.normalized * 45, ForceMode2D.Force);
 }
 Debug.Log("push out");

and this is how it behaves wait

so when I stop it keeps moving by itself

I'll actually make collider a bit bigger so its easier to notice

[celest sandal]

First off, you shouldn't invert diff

Not -diff, just diff

It's a vector pointing from the tree to the player. So it should push the player away from the tree

[split magnet]

wait, you are not using diff you are using velocitydiff

so of course it wouldnt work

[celest sandal]

I'm talking about diff in the code that we can see in the video

[pale tartan]

i used position thing too the one u wrote

[celest sandal]

Oh yeah you changed it to velocityDiff? Use diff

[pale tartan]

fixed that and now it doesn't move at all

ok ok

wait

[celest sandal]

Show your current code and stop changing it for a moment

So we can keep up

[pale tartan]

I think we worked it out

a bit

when a collider is large u can easily see it wait

[celest sandal]

Yeah good idea to use a larger trigger collider for debug purposes

[pale tartan]

yeah

so here

[pale tartan]

but if u noticed guys

[celest sandal]

Seems to work?

[pale tartan]

in the last case

when I moved inside

[celest sandal]

Just need a larger force away from the tree

[pale tartan]

I actually stopped

moving

and it didn't push me out

i'll try changing some

[celest sandal]

Can't comment on anything if I don't see your current code

[pale tartan]

values to multipliers

private void OnTriggerStay2D(Collider2D collision)
{

    //Vector2 targetVelocity = -collision.attachedRigidbody.velocity * multiplier; // your movedirection * speed
    //Vector2 velocityDiff = gameObject.GetComponent<Rigidbody2D>().velocity - collision.attachedRigidbody.velocity;


    Vector2 diff = collision.transform.position - gameObject.transform.position; //character position - transform.position //tree position
    

    if (collision.attachedRigidbody.velocity != new Vector2(0, 0))
    {
        //collision.attachedRigidbody.AddForce(velocityDiff, ForceMode2D.Force);
        collision.attachedRigidbody.AddForce(diff.normalized * 45, ForceMode2D.Force);
    }
    Debug.Log("push out");
}```

like it has a weak spot here xd

from the other sides it pushes me out

it might be because of this

if (collision.attachedRigidbody.velocity != new Vector2(0, 0))

wyt

[celest sandal]

I don't think that's necessary

[pale tartan]

yeah I think that makes it stop

wait i'll remove that

[celest sandal]

Yes, if you stop completely while inside the trigger then that prevents it from pushing you out

[pale tartan]

logically

if I stop yeah

it won't add any more force to me

which is not what we want

[celest sandal]

You might want to add some modifiers according to your current movement speed later but get this working first

[pale tartan]

what modifiers

[split magnet]

well if you remove this it will keep adding a force even if you are stopped so it will eventually push you out

also you can just do vector2.zero

[celest sandal]

Let's see how it ends up feeling first

[pale tartan]

what u think guys

[pale tartan]

oh thats nice thing will be useful in future too

[celest sandal]

The functionality is there but I feel like the push-away force should be greater

[pale tartan]

yes

[celest sandal]

So try a greater value than 45

[pale tartan]

i keep adding it xdd

[toxic tangle]

yeah

[pale tartan]

this was actually 80

and I changed it to multiplier

so I can change it from unity

[toxic tangle]

try 200

[celest sandal]

The reason why it has to be a high number is because it's fighting your other movement code's addforce

But that's fine I think

[pale tartan]

since it turns out smooth

its fine

[split magnet]

well there you go 👍

[pale tartan]

look guys

put 250 and made outside collider a bit more smaller

[celest sandal]

Looks good

[pale tartan]

Good way more smooth

thank u guys! <3

[celest sandal]

Np, was fun

[pale tartan]

just started solo learning on unity and i'll keep asking questions here from now on xdd

[split magnet]

feel free to ask

[toxic tangle]

finally we all did it guys was nice to work with u all 🙂

[pale tartan]

haha

thank yall

how do I close thread

or should it be saved or what

[toxic tangle]

u can delete it

[split magnet]

right click on it, and delete thread

[pale tartan]

yeah ok

[celest sandal]

You don't need to delete it, just in case someone has a similiar issue later

We can reference this

[toxic tangle]

yeah

[pale tartan]

yeah ok

i thought I deleted but

it stayed so lets leave it like this ig

[toxic tangle]

lmao it got deleted

[celest sandal]

I guess it's gone after we leave then?

[toxic tangle]

i mean no other person can see other than us i guess

[pale tartan]

check physics

[celest sandal]

It's fine, I'll remember how it was done

[pale tartan]

xd