when I rotate the capsule with the mouse the axes change direction (W becomes S and A becomes D and vice versa), so to go forward I have to use A, D or S depending on where the player is looking . Does anyone know how I fix this? I tried transform.Translate, but as said in the video, it doesn't work along with physics
To stop objects from moving through colliders when moving at a fast pace you can set the objects rigid body's collision detection from discrete to continuous. It's more performance heavy which is why it's not the default.
Looking for a fix myself. I have tried everything. Continuous Dynamic on all rbs with interpolate turned on. The rb I am moving still "goes inside" the RB it's colliding with.
This was so informative, I've tried everything without understanding anything, havent tried only movePosition and this was what I needed. Thanks a lot for the time you spent to make this video
Really useful information, good voice, high quality recording both visually and vocally, nice editing, not too short and not too long a video, clear explanation about the subject, proper examples and many other details that I am sure you have considered but I cannot immediately get it. I badly needed this piece of information and you just delivered that in the best way possible. Thank you so much sir ❤️
I've seen a lot of rigidbody lesson on both unity official tutorials and youtube but this is the best well explained and distilled version ever! Keep on your journey, I'll be following!
hey, I've been using this video since it was released on like, a dozen or so different projects of mine for any number of functions and tasks. So, thank you so much. It has really made my life so much easier.
@@tomasmileto idk if this works but you can try putting something similar like this in the code float Gravity = 9.81f; Vector 2 movement = (xAxis, Gravity + yAxis); MovePosition(transform.Position + movement);
This video is gold, short, direct, and actually full of information. Getting the How, why, and what for... One of the best videos in terms of knowledge given for time spent on a video. Subscribed immediately... :D will be watching out for your contents man...very nice...
//Moving the character //1st way to move a character overrides the physics of the 3D game and doesn't affect collisions using System.Collections; using System.Collections.Generic; using UnityEngine; public class translate : MonoBehaviour { public float speed = 10.0f; //Use this for initialization void Start() { } //Update is called once per frame //Update runs once per frame so it's ideal for capturing the keyboard input { moveCharacter(new Vector2(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical"))); } void moveCharacter(Vector2 direction) { transform.Translate(direction * speed * Time.deltaTime); } } //2nd way to move a character involes physics in Unity //*****REMEMBER TO SET "is kinematic" in the inspector to OFF //kinematic sets the Rigidbody to accept instructions from code and not consider physics using System.Collections; using System.Collections.Generic; using UnityEngine; public class translate : MonoBehaviour { public float speed = 10.0f; public Rigiddoby rb; public Vector2 movement; //Use this for initialization void Start() { //If your script is a component (just linked to a gameObject with a rigidbody of its own) //then call on this and get its rigidbody component rb = this.GetComponent(); } //Update is called once per frame //Update runs once per frame so it's ideal for capturing the keyboard input { movement = new Vector2(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical")); } //FixedUpdate is run every physics step, so once, none, or many times per frame //It's the update you want to use for dealing with instructions related to physics //Don't use Update for physics... just FixedUpdate void FixedUpdate() { //this fixedUpdate will handle the pace at which the moveCharacter function is called moveCharacter(movement); } //this is the moveCharacter function that takes the direction determined by your keypress in Update //Horizontal left (-1) and right (1) and zero (0) for it's point of departure //Vertical up (1) and down (-1) and zero (0) again void moveCharacter(Vector2 direction) { //There is more than one way to move the RigidBody (what we've called rb here) //We can use the method RigidBody.AddForce(); to add force to the object //This will have a sliding effect rb.AddForce(direction * speed); //We can instead set the RigidBody's velocity this way RigidBody.velocity; //Manipulating the velocity will move an object at a constant rate over time //Controlling an object this way overrides physics including gravity but will still have collisions rb.velocity = direction * speed; //Or we can use RidigBody.movePosition; //This may be the best option for moving a character because it works with physics & is more easilty controlled //In this case we're only concerned with moving on the X axis so we're using Vector2 and convert this to a x and y transformation by adding a (Vector2) before transform and don't forget the brackets //If on the other hand you want to move the character on all axis including Z then you don't need the Vector2 variable for movement above and you also don't need to convert this code to adjust it with (Vector2) before transform rb.MovePosition((Vector2)transform.position + (direction * speed * Time.deltaTime)); }
@@pressstart6864 The issues you were having with .AddForce() and .velocity have easy fixes. _For AddForce():_ If you want to stop at a certain speed without including drag, an if statement checking your speed vs your maximum helps. _For .velocity:_ If jumping and gravity are the only ways you plan to move vertically, rb.velocity.y as the movement vector's y should fix this. Could you maybe pin the main comment so people may be more likely to see the fixes to those issues?
This is what a tutorial should look like. Been searching for a simple and well detailed answer for eternity and i got even more confused each time, but finally, I got a good answer. Thanks man 👌🏾
If you use velocity but still want the object to have gravity, you can also do it like this (it's like applying a force): rb.velocity += direction * speed;
This was information I needed for a long time. I kept trying to have the translate behavior, while avoiding clipping issues. I couldn't find an answer until your video. Thank you.
This video is a gift from heaven. I just started unity a week back and my script is super complicated because i never knew how to do movement, so I experimented. This REALLY helps a lot! Thank you!
If you call for the current Y velocity in rb.Velocity calls you could maintain gravity and with an if statement or another line of code you could add a jump. The problem with Velocity is it throws out the old Velocity if you do not do something to preserve it making gravity not work right.
Another option which is more work but gives you more control over how your character moves is to write custom physics for your character controller, like this: github.com/prime31/CharacterController2D
You are very talented to teach and I love how you can explain 3 different ways for achieve movement with scripts. Could you make a series with this theme? I mean, wich different functions could do the same? Thanks!
Well, what drives me absolutely up the walls is that the minor details tutorials often skip like the is kinematic checkbox will have me looking for hours thinking I did something wrong with the code. I'm not setting up a script directly on the GameObject you see? So it's just easy to imagine that I've done something wrong. In the end, all of this is just so simple. It's like, when I was desperately trying to get the mesh data, I'm talking about the vertices and the triangles... someone on Twitter showed me a sample of his code. It didn't work for me at all. I kept getting error messages that read something like I didn't have permission to read or write the data. When I found that stupid checkbox everything seemed to work... Oh, but no, there had to be something else. I had all the coordinates, it was so beautiful. But they looked strange, and I got to understand that I had a long list of doubles and not floats. I spent days scratching my head, trying to figure out how I would solve this or just make a tool again that I'd use to trace all the graphics. It was just a checkbox... one that determined whether to change the units of the imported mesh into Unity units. I turned that off and everything was great. So, when these experienced users and teachers don't explain things in depth missing minor details that change everything, the learning process isn't just extended it's made a torment. I say, thanks for the information but next time please make it comprehensive. You have no idea just how discouraging it is. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-P_VvEouFo8w.html
I much prefer using Velocity to control my rigidbody such as: public Rigidbody2D rb2D; public float speed; //placed somewhere you have check for button press direction = Input.GetAxisRaw("Horizontal"); rb2D.velocity = new Vector2(direction * speed, rb2D.velocity.y); // this ensures that gravity still effects you even whilst moving
2:18 "The biggest problem with transform.translate is that it doesn't detect collision." I have just tested this and this statement doesn't appear to be true. In your example, If you give your ball a boxCollider2D and a rigidbidy2D and you do the same for your wall, and you then move the ball using "transform.translate", it will collide with the wall. So I'm now confused?
It because at the current frame, two collider with one of these have a rigibodie attach are colliding. But move positon will predicate the next frame to know if the WILL be a collision. So in general, Move Positon is way more accurate than Translate if you need collision
@@MrTeteX9 Thank you for your reply. That was very helpful. Yes, I repeated the same test with a very high speed. Transform translate did not collide with the wall. MovePosition did collide with the wall. :)
Great tutorial, but movePosition has some problems, it has some disorder with other method behavior such as jumping especially when you're using AddForce to jump. I don't know but it seems movePosition is useful just in some cases.
movePosition is only recommended for Kinematic objects, according to the Scripting Reference. Using velocity directly is the best practice for 2D, ALTHOUGH it has massive issues when AddForce (for Knockbacks, explosion forces etc.) comes into play.
You can use a raycast before moving to see how far you should move, if the raycast hits something then get the position and use that to move instead of the usual calculation.
the last one doesnt work. it gives error message Transform' does not contain a definition for 'Position' and no accessible extension method 'Position' accepting a first argument of type 'Transform' could be found (are you missing a using directive or an assembly reference?)
There is another way to move an object similar to Translate() transform.position += (Vector3)(direction * speed * Time.deltaTime); So it's basically changing it's position. It's even more "raw" than Translate() It there an reason to use this method? The answer is "no" :-)
How would I take car physics and turn them into character physics, keep the momentum, lose the wobble and shake, and I can move around like a character in a 3d platformer? I'm using the code from this demo: github.com/SergeyMakeev/ArcadeCarPhysics/releases/tag/1.0
First of all, I like all you videos and how well done they are just made (recorded, edited, and even sound and visual quality. I've been watching you videos on Patreon for the most part, but I just had to comment on this video. It's just very well explained and the demonstration and the way you broke things down just couldn't have been done better! Thank you very much, and keep up the good work. especially those video where you explain how things work or what certain functions/methods do or how they work. I'll be waiting for more videos like this.
Thank you for this explanation. I was struggling to understand when to use RB or translate. But I have a question about this subject. Why the box collider won't detect an other collider when using translate?
If your like me and you can't get this to work with a 2D build check to make sure you're not using the 'Rigidbody 2D' component on your object. If you are, then make sure you specify 'Rigidbody2D' in your .cs file.
Yes technically physics still occur during translate. But if you move too quickly with translate the object could teleport around obstacles, skipping collisions altogether. For best practices... use add force.
I realize the following is a translate, but w rigidbody and 'dynamic' added, it does use collisions and physics. It will also do trigger w no 'dynamic'. Where does this fit in? void OnMouseDrag() { Vector2 point = Camera.main.ScreenToWorldPoint(Input.mousePosition); transform.position = point; } Thanks!
Hello, I have a problem using either rb.AddForce() or rb.MovePositive() just like rb.MovePosition(), I wanted the character to interact with collision while moving with a fix speed. But I also wanted that external forces applied to character will affect its movement... (Not Kinematic) for example, when a fireball is shot to my character, the player will be knocked back... if my character is moving the same direction of the impact, I move faster/further... But if my character is moving against the impact, I reduce the effect of the knockback... If I just added the impact force to the character rb while walking, the character will not be knockbacked until I stop walking. I found out that this is somewhat achievable with rb.AddForce(). Since the Forces from the fireball and walking applied to the character will be calculated automatically. But I don't want my Character to walk like it is Accelerating.. How do you work around it? Thankyou [For reference, The physics will look like in the Warcraft3mod: Warlocks, instead its 2D for Android.]
It's January 2020 and Unity changes often so this might not be the case at the time this video was created, but changing Rigidbody.velocity or using Rigidbody.AddForce can be done in the frame-bound Update() since Rigidbody actually applies the physics-law-abiding and interpolation-enabled translation during FixedUpdate(). I think it's just Rigidbody.MovePosition() that should be done in physics since this actually moves the transform. I might be wrong, though.
4:48 wait, you already defined a vector2 for movement then for no reason you are creating a new vector2 hundreds of times a second in update! WHY DO YOU DO THIS? BAD BAD BAD!@
Just so everyone knows, the issues he was having with .AddForce() and .velocity have easy fixes! *Solutions to the Rigidbody issues he was having:* _For AddForce():_ If you want to stop at a certain speed without including drag, an if statement checking your speed vs your maximum helps. _For .velocity:_ If jumping and gravity are the only ways you plan to move vertically, rb.velocity.y as the movement vector's y should fix this.
F0ck... I made a game with .velocity, and already uploaded it. The thing is I wanted to have physical objects actually pushing the character, but I didn't find your video on time.
at 7:42, why do u use Time.deltaTime in movePosition()? I read that movePosition automatically interpolates between 2 positions for intermediate frames. so why use Time.deltaTime? Also, even if you are using Time.deltaTime, why use that? why not Time.fixedDeltaTime since movePosition is being called from fixedUpdate?
Need help with: if(player is moving in world space z or -z direction){do other code here to move UI Icon direction of x direction as the player is being pushed in the x direction always and UI Icon must show this when player is facing in either z or -z world space ditection movement the icon either points right or left depending on the player z movement} The code inside the brackets is fine but the if( player is moving in z or -z world space) I can not figure out 3 weeks later. Alll the best from 🏴👨💻 👍
What is the purpose behind having an additional function for moving it? Why not just have the lines of code within your MoveCharacter method go directly in the FixedUpdate? Also, ( I could be totally wrong here, but) should you have *Time.deltaTime? It's being run in the FixedUpdate, so wouldn't it be better to actually not have it in reference to time? Lastly, when I move a 3d rigidbody using velocity, the moment it touches a ramp ever so gently, it skyrockets into the air. Why? lol
This video is amazing. It's too bad I don't know how to convert this MovePosition script to Rigidbody2D to keep the game optimized. The reason? My eyes are heavy and sleep would definitely be required to learn coding, otherwise I'll just have to watch this video again tomorrow to relearn everything I forgot.
Ok, First of all, cool that u make vids for people who wanna learn game development. BUT Saying that the rigid body movement is superior to the Translate one ist just awfully wrong. I mean as long as you wanna prototype or play a little bit around, yeah sure u might have a point there but everything else... I'm sure u need to code a lot more to make the Translate movement nice but u will have 100% control about everything and u won't lose 1 feature (Sure, If u know how). But that just what I wanted to say if u know how Translate > Rigidbody. I dont even know if there is 1 Character Controller in common games that aren't based on Translate (With Translate I mean setting the position yourself and not letting some physics engine doing the work).
when I rotate the capsule with the mouse the axes change direction (W becomes S and A becomes D and vice versa), so to go forward I have to use A, D or S depending on where the player is looking . Does anyone know how I fix this? I tried transform.Translate, but as said in the video, it doesn't work along with physics
I thought using rb.movePosition is only good when the rigidbody is Kinematic. Is there any difference when using rb.movePosition on kinematic and non kinematic rigidbodies? Great tutorial btw.
When a Rigidbody is kinematic - forces, collisions or joints will not affect the rigidbody anymore. So yes, you would need to use rb.movePosition in this case to move the rigidbody, but it can also be used for non-kinematic rigidbodies as well.
Thank you so much! I've been flipping through tutorials and manuals for a week straight trying to find the simplest way to give an object flight. And...ha...for some reason, my sphere ended up flying around the X access instead of the Y, like yours. But THANK YOU. That was a succinct yet thorough explanation. I prefer the AddForce option, because I am trying to similate movement through fluid. However, I still have to look into how to include the Z axis. Maybe I should go for a follow the (3d)camera and move option.
Hey Buddy you totally rock!!! i was looking something like for days!! In fact you made my day really. I was struggling with the addforce movement of my character ( it really not for a character for sure ) and i just changed to use the movePosition and looks amazing now. I just suscribe to your channel. One question i have, i am trying to use movePosition in my click to move script and it seems like kind if different method than the one i was using ( velocity ) but since it was not working well i want to make something that use movePosition, can you point me o how to use it? thanks a lot!
![Unity Movement [RigidBody vs Translate]](/img/logo.svg){kind=logo}
