[Unreal Engine 4.7+] Hover Vehicle Blueprint Tutorial

[@Jake-co7rt]

If all I had learned from this vid had been the DOT PRODUCT, it would have been totally worth it for that alone! Thank you very much!

[@Unain]

Added some annotations to fix the problems you might have in 4.9+. The fixed parts should look like this: i.imgur.com/5vVXJZo.png and i.imgur.com/GJBzc0Z.png

[@chrisobrooks6662]

+Unain I came across an issue within UE4.10 where i cant seem to find the Add force at location node (12:36 in the tutorial). it could just be an oversight on my part, but i couldn't seem to find a replacement of some kind anywhere. Any help would be appreciated i'm fairly new to UE.

[@Unain]

+Chris O Brooks You can try to drag directly from the ParentComponent variable (that should fix it). If it's still not in the list, uncheck "context sensitive". It should still be there in 4.10. Let me know if that works.

[@chrisobrooks6662]

+Unain When I unchecked "context sensitive" it fixed my issue and i found the Add force at location node. thanks for the help.

[@Unain]

Chris O Brooks Yeah, that usually happens when you don't drag it from a variable, it hides functions that need a certain variable :). You would have probably found it if you dragged from the variable too (with context sensitive active). Glad it worked though ;).

[@zetsology]

Thanks for this additional info. I must admit I was stupid to start learning blueprints here, although it's really fun. Can you suggest some other source tutorial for beginners other than official ones?

[@xultros3868]

2 years later, still very usefull. Thank you very much Unain, this is a nice tutorial! :)

[@vincentprom9265]

Awesome tutorial man. These physics work way better work for an arcade-type type racer than the built-in vehicle physics.

[@ghostravenstorm]

7:10 - I'm a little confused. Why does each hover component need to tell the same mesh to simulate physics? If the cube itself is what's simulating physics, then why move move to event begin play on the cube?

[@novaria]

true. I personally just activated the physics simulation on the mesh itself via the checkbox.

[@KnobbyNobbes]

You are awesome man! This is exactly what I need for making my boat float in water (float, hover, no real difference!). A thousand thanks for sharing your brilliance!

[@Unain]

KnobbyNobbes No problem, glad you liked it :). Good luck with your game!

[@DrJackalPhD]

Hey Unain. I just want to say thank you for this tutorial. I didn't read the description like an idiot and got pretty frustrated with myself. Once I did read it, everything worked fine. This is a big step in the right direction for my project. Thanks a lot man. You're a big help.

[@Unain]

No problem, good to hear that you were able to overcome the problem. Good luck with your project!

[@visual-electronics]

Thanks for this. For anyone having trouble and box hits ground and bounces slightly. This is normal Physics. Solution is you do not have HoverComponents attached CarMesh correctly.

[@inactiveaccount2090]

+godzyxw Either that or the trace length isn't long enough, that's why it was bouncing for me lol

[@prog.jogosdigitais9786]

in 2022 and still amazing!!

[@Rac00nn7]

I having issues trying to do this in 4.9. I'm using my hover bike mesh i made so the first issue was the " cast to primitive component" it said i already had a mesh and didnt need it so i continued without it. but when i "add force at location" i dont have a component for it so i used the parent component from variables. everything compiled correctly but when i tried it out it would just fall to the ground and wouldn't move. please help

[@travispierce9886]

+richard defazio answered on SnooseIRTL's question by sima adrei!!!

[@Unain]

+richard defazio Be sure to check that you have filled in all your HoverComponent variables, like I do at 14:50.

[@salikrehman3468]

hello richard... did you solved this problem. if you done it, please help me out i also get same problem Reply soon.

[@PEMBYSGAMINGWORLD]

9:32 - add multiply up vector by a float is where i hit a problem. All i get is Math/Float/Multiply by PI. At this point i knew I HAD F**KED UP! Great tutorial up to there HEEELPPP!!

[@LiltGarden]

this tutorial is so great. one thing I've been struggling with - how do I get it to accelerate and how can I configure its breaking speed?

[@DanielBrown-zv1zy]

I think you’d have to set parameters for your movements while controlling the vehicle. Like creating an additional input to give a boost effect or setting the reverse input to be a certain speed while in forward motion then having a default for moving from a single position. I’m just spitballing but hopefully this helps with finding an answer! 😊

[@tyraxgaming4963]

At 13:48 The node INIT COMPONENT only accepts varibles, NOT meshes. PLEASE HELP ME!!

[@NordicDetectorist]

i got an Error because of "None" ParentComponent ........ what i should do?

[@DragonFlairr]

when i try to add force to the parent component it wont find the parent component just add force at location and add force at location local why is this?

[@Tendou-Gaming]

can this concept be applied to buoyency (i.e. making a boat float on water)

[@soaacademy]

I think there's a problem with the Torque. If you keep cheked the dot product you'll see it keep going above and below zero. This generates a problem when you're not moving forward/backward with the steer. I tried to fix it moving the check > 0 to something like < 50 AND > -50. Now I have a range of 100 where the steer is not taking the dot product in consideration and it look like working better.

[@imagine-games6677]

could you provide a photo of how you did this?

[@ghostravenstorm]

I'm not getting these same results in 4.14. It just lies flat on the ground.

[@EthanThomson]

change the values for the trace and the hover force. I had the same issue

[@MstrLAM]

Make sure your HoverComponents are actually children of the HoverCar blueprint (Open up your HoverCar blueprint, look at the Components list, select all of the HoverComponents and drag them on top of the car mesh to set it as the parent)

[@Kazurgon]

Did you fix it Stuart?

[@Archwarder23]

@@EthanThomson I'm having the same issue. Do I need to make the trace and hover force values higher or lower?

[@GamingwithPortals]

@@Archwarder23 try 60 on the length and 60000 on the force

[@3dnovarider819]

I started with a flying Pawn scene and how,even if I erase the flying pawn object, when I hit posses it continuisly posses que flying blue UFO instead of the Hovering Car , do you know how can I fix this?

[@up-7656]

if you have time, can you show how to add floating to the double jump? I would like to do it like D1 or D2 but I can't find anything.

[@agoogleuser4859]

At 14:00 you're able to call an init component for each component but mine only has HoverCar Component. Cant find what i did wrong (4.9.2)

[@agoogleuser4859]

+T Koppenhaver okay so i deleted initcomponent and then recreated it and NOW its letting me do it, even though I set it up exactly the same. Now my box falls to the ground, bounces barely and then sticks to the ground.

[@sleepnauthero367]

v. 4.15.2 cant find inint components? reference 13:47 in video

[@hollyhawkins8455]

This was an awesome tutorial! I was wondering how I could make it so that if the car falls off an obstacle and is on it's side/back that the player could upright it and keep playing, eg tap A and D alternating to wiggle the car back to upright, how would you do this??

[@AttitudeOverTalent]

First of all THANK YOU!!! Amazing! My "hover car" seems to want to switch directions if I hold it in one directions like its fighting the other side type thing. Not sure whats going on. Anyway, very cool stuff.

[@novaria]

this approach is flawed. Somehow the line trace gets skewed the farther away I move the mesh from the World Origin. Why is that?

[@adrianuskevin3720]

why the hover vehicle falls very slow when jump? I tried to add mass to CarMesh and the result still not what Im expecting. I did this in 4.14 it works fine btw

[@felipefrango]

Having this same issue! Got it working in 4.16 and even expanded on it a bit, but the car falls like a pice of paper haha.

[@someonewithsomename]

Because of Linear and Angular Damping set so high. You need to make a way to stabilize bounciness independent to the whole body physics simulation

[@chijunky6145]

So, take the node in the linetrace of the hovercomponent, and if it DOESN'T hit anything, the false part of the branch, then set linear damping of the cube to 0, instead of 3. Keep angular damping at 5 though, if you don't then the car spins like crazy int he air. Basically, the damping should only happen when the suspension springs are in play, but when you're in the air they're not, so set the lineardamping to only occur when the linetraces actually hit something, as in if the vehicle is actually making contact with the ground.

[@RanElliott]

it just keeps crashing every time i try to compile?? and when i try to not use cast to primitive componant instead and plug it in directly it wont allow and says its not compatable...this woould have been awesome but i'm giving up after 20 crashes. i'm using 4.10 i'm sure it changed and thats the problem

[@nickguerard913]

Working with 4.17, I'm not noticing any changes needing to me made. Followed tut to the teeth, make sure you don't miss anything he says.

[@ReaverLordTonus]

3rd time editing: Finally got this working, had to assign the individual hover components to 'init component" as well as link them all to the car mesh. now I just have to figure out how to add a bit of a drift force to the turning and also find a way to keep it attached to the ground.

[@joshuajebadurai7210]

Awesome tutorial, I loved it. Of course needed to change a little bit for the 4.17.

[@lastdies]

Blueprints is also in C ++ code only in the combined units for convenience. I think there is no difference.

[@TheLegoflims]

This has worked great and is exactly what i needed for my game, One issue is if you go up a ramp you can fly into the sky forever, Any idea how to fix?

[@DyskoVolante]

+Lewin Did you ever figure this out? I even went as far as to crank the world gravity and still no fix.

[@chijunky6145]

@@DyskoVolante You just need to check if the cube is close to the ground, and only apply forward force if it is. You can do this by doing a line trace the length of the hovercomponent tracelength, any of them will do if they're all the same length, otherwise take the longest length (eg in a monster truck that has bigger wheels in the back than front), the start location of the trace should be GetWorldLocation(cube), split vector, hook up x and y to the split vector on the start of the linetrace node, then do a GetWorldLocation or GetComponentLocation of one of the hover components, split the vector and hook up the Z to the empty Z of the linetrace start node. This shoots a ray down in the direction of under the cube, the length of the linetrace length, which basically checks if the cube is close enough to the ground for the wheels to make contact. Then, on the boolean hit output of the linetrace node, make a branch. If true, then accelerate forward/backward, if false then do nothing. The cube will only accelerate if the hypothetical wheels make contact with the ground, now.

[@whatisawontheinternet]

Great tutorial, however, I am experiencing 1 problem, that is I cannot get my hover vehicle to turn. I am very new to blueprints and am aware that this tutorial is outdated however it would be great if I could get some help on this.

[@MstrLAM]

Thank you for making this, I am so grateful for people like you!

[@PandaBot2001]

I know this is old but mine just wobbles about or acts like it's doing the downward dog

[@Archiewhitehead]

Awesome Tutorial! Thanks! However, i'm running into an issue, whenever i get some air, my vehicle basically floats. Whenever the line trace is in contact with the ground the vehicle behaves really nicely, but as soon as it's no longer touching i get this weird floaty car. It seems the cube's physics don't actually do anything. any ideas how to remedy this?

[@Unain]

+Archie Whitehead It's the Linear Damping. You have to check if you're on the ground -> check if 1 or more tracelines from the hover components are hitting the ground. If none of them are hitting the ground, set the Linear Damping to the default setting 0.1 I think it was :).

[@Archiewhitehead]

+Unain Thanks for replying i really appreciate it! What node setup would i use to check the tracelines separately? I tried using the False output from the branch in the HoverComponent, however that seems to fire whenever one trace is not touching, making the vehicle handling very slippery. Thanks again for a great tutorial and helping me out :) I should add i'm using this for a wipeout/fzero type project, so the vehicle is traveling very fast!

[@Unain]

Archie Whitehead You should combine all the traces into one function (which returns a boolean) so that you can check if all tracelines are touching or not.

[@Archiewhitehead]

+Unain it works, thanks, not slippery unless i bank servery (banking influences the roll(?) of the vehicle meaning it loses trace contact with the ground sometimes. However reducing the linear dampening means that getting air results in the vehicle flying off into the distance with incredible force, thanks for your time, obviously i don't expect you to figure out a solution, I'll keep working on it and see what i can think up.

[@thomasrobin8138]

@@Archiewhitehead Hi ! I have the same problem ... Did you find a solution when the car is in the air ? :(

[@grimm-et6gh]

hi, unain. i tried to apply this tut to a skeletal mesh i built but it never work. ( a hovering drone ) think i miss something in the process, maybe skeletal should be done another way ?

[@luftbauch4360]

Nice tutorial, ty for that. I am stuck in applying a local force on local actor x axis. through Apply force or apply force at location, but not with actor transform. Can you extend your tutorial with that please? I do not use a pawn bp, only actor bp, jump on it and control it with simple collisionboxes for now.

[@jayadams3339]

Got this working but turning still has a bug. Works fine IF forward force is applied, But if you are stationary and you turn then the craft will jiggle back and forth a little gaining momentum, then turn in the wrong direction

[@Visceral3D]

I dont really understand i have done everything and im pushing 9million in hoverforce and my vehicle still just falls straight down. I can see the the lines and everything but it dosnt seem to be pushing it up enough.

[@Visceral3D]

Visceral3D Nevermind, i got a case of the dumb...forgot to run the init event.

[@Unain]

Visceral3D Glad you got it working ;).

[@pulkitpunea2745]

how to add force lower to center of mesh ?

[@koaku7774]

my problem is when i try to turn on the spot it turns in the direction for 3 seconds then starts trying to go back in the opposite direction

[@grimmrobe220]

Having followed this video. My object never actually stabilises. It wobbles around indefinitely. Or in certain instances glitches out entirely. It’s almost like the 4 hover points get themselves out of sync. Additionally I can’t get it to work without having to set the mass which I’m guessing came from an engine update. Anybody else had / fixed these issues?

[@youtubewontletmelogoutofyo8845]

Tutorial is great, but I want my hovercar to do two things specifically: 1. having the hovercar to turn right and/or left spinning on the spot without the car stopping midway through. (when trying to do a 360 turn on the spot, the car jitters and sometimes moves to the right at time, its never a continuous motion.) 2. for the left and right controls to be seperate from the front and back controls. (Whenever my hovercar has moved forward (w), the car turns left (A) and right (D) when pressed, but when my hover car has moved backwards (s) , the car turns right when pressing (A) when it should have turned left, and vice versa the other way.) Any Reasons why this is happening and how this can be fixed?. Also using 4.9 as the engine version.

[@chijunky6145]

1) That is caused by the silly code in the TurnLeft event, that selects a float based on forward velocity. If the car is neither moving greater or less than 0, then it multiplies the turn speed by 0, so no turning. Try removing it and checking if the back/s key is down, and multiplying turn speed by -1 if it is, else do nothing. 2) It looks like you hooked up the MoveForward event to both the add force node, and the add torque node. You need to have one event (Move Forward) that is hooked up only to the AddForce node, and one event (TurnLeft) that is only hooked up to the add torque node.

[@asdvdsasdcvxghgf555]

Hi, i need my hovercar to be able to go upside down and on walls inside tunnels without flipping out, how would i achieve this if i followed this tutorial?

[@indieartsmidwest4042]

Maybe combine this tutorial with a wall crawler tutorial.

[@davidpeters5713]

Having lots of issues in 4.19.2 - Can't find a balance of vertical force.. the car either sinks to the ground or floats into the sky.. and when forward input is applied, it just somersaults around its Y axis.. Will post a fix if I find one!

[@davidpeters5713]

Ok-the HoverComponents weren't children of the car mesh. Very important! I originally had them as children, but by dragging them onto the car mesh (to be doubly sure that they were children) actually *un-parented* the car mesh.

[@777deathgod777]

Great tutorial, this is going to help alot for my big project. I'm encountering a problem where when I accelerate forward, the box gets closer to the ground as I move forward, when I reverse it gets further from the ground flying up. When I keep moving forward until it hits the ground it falls forward, when I reverse the box stays on its same axis and reverses up into the air. Gravity is on, so why isn't it effecting the vehicle?

[@chijunky6145]

Your center of mass on the cube is probably too low. Set it to a value closer to 0.

[@ElGorro8]

Awesome tutorial, thanks so much for putting it together Unain! I'm having just one issue, when my Hovercar Pawn spawns, if I hold A/D, it'll either jitter and go in the wrong direction or jitter in place. Do you know what could have gone wrong there?

[@Unain]

+Barbossal I would re-check the part from 20:21 onward and see if there is anything different in your Input Axis MoveRight event chain. Also, make sure that your force is high enough (the big number 2.000.000). If you have a bigger car (more mass) it might need more force to be pushed in the right direction. Does it work if you just do the part from 20:21 to 21:38 ?

[@ElGorro8]

+Unain Okay, I rebuilt the turn section, and it works up until I add in the Get Physics Linear Velocity. The Car seems to have the issue ONLY when the velocity is in the decimals around zero (ie 00.023 or -00.44). Seems like its an issue when the number is between 1 and -1.

[@davidlopez17]

Nice tutorial, one question all forces are local and not global coordinates system, locations are in global?

[@sankofa_tattoo]

hi there , i did import a fbx and tried to follow along your video to add everything up , but just things are missing on my mesh is that I don't have the pawn option on the object panel. How could I transform that static mesh into a pawn that i could possec ?

[@asadtrash9407]

Pawns are not static meshes, you need to create a blueprint class which is pawn, if you add a blueprint a menu should appear and it will tell you to create a blueprint of which class , pawn , actor , character and so on

[@Zombie420]

having an issue, it works but when i start going it starts flying, any idea how to fix?

[@MonstroUK]

I'm running into issues at the linear and angular damping phase, I can't compile the blueprint without adding something to the target inputs but nothing wants to attach!

[@MonstroUK]

My bad, there were two Linear and Angular Damping nodes in the contextual menu. I was using the physics handle components ones.

[@GloomyCat85]

sigh I adjusted all I could.. mesh mass.. force... on bsp it works cool... but spline mesh... 0.... it start messing around...

[@krustykraken9331]

Thanks for the update for UE4.9! Nice tutorial. It would help if you went slower in areas when you're clicking stuff, maybe adding a slow-motion and zoom in, but I guess that would take a lot of time to do. Still, it really helped me a lot! Thanks!

[@MrPangahas]

How do you adjust the drifting/handling of the hovering?say I want one that handles better and drifts less and another that has less control/handling?

[@DankLordvsGames]

Make a duplicate of the scene components, the thing you put under the car to make it hover - and make one with different settings. Attach that to the different "car" and you're done..

[@chijunky6145]

One way to do it is to calculate the velocity of the cube to the left/right, get the RightVector and add force to the cube equal to the right vector divided by a bit or multiplied by a bit. This basically checks how much the car is drifting, then adds a force in the opposite direction to counter it. If you want one that controls less, then you could set the linear and angular damping values lower, in the hovercomponents. You could have each hovercomponent use a float variable for these things, which you can then set to be instance editable, so you can adjust each wheel on each car to have different handling.

[@bluestormguy65]

10:35 the hit "result" wont connect to the "out hits" 4.12.5

[@Unain]

No idea what you mean by that. Did you break the out hit as shown in the video? Link a picture with what you are trying to do.

[@bluestormguy65]

I'll send it when I get home, but the breaking wasn't working, saying it wasn't the same.

[@bluestormguy65]

After re- doing it, it worked. I probably messed up, thankyou! subscribed

[@Unain]

Good to know! :)

[@yami7046]

Thank You Very Much !!! But i have a question, is it possible : set visibillity at OFF on The HoverComponents because it's not very nice ?? ... ^^

[@Unain]

Yami You mean the red lines coming from the bottom ingame? Those are the line trace, just set the Draw Debug Type to None :).

[@yami7046]

Where I can set the "Draw Debug type" ?

[@Unain]

Yami It's on the Single Line Trace by Channel node in HoverComponent.

[@yami7046]

thanks man !

[@youlikeicecream]

Any suggestions for how to add simple wheels into the suspension system ?

[@cosminandrei2047]

How to add automatic gearbox, with sound, RPM and HUD.. I know to make a HUD, but idk how to sync with RPM, If someone can show me a tutorial, a advice ! Please !

[@jigsaw0073]

Does this not work with a "skeletal mesh"? When I import my FBX of the hover craft I made, I end up with Skeletal Mesh that has animations. Do I need to only use a "static mesh"? Thank you for the great tutorial!

[@chijunky6145]

You should have both a static mesh (this cube) and a skeletal mesh. The static mesh (cube) is set to invisible, and is basically the collision box. The Skeletal Mesh is set to visible, and just parented to the cube, and all collision is set to off for it. In this way, you're doing exactly what is in the video, but tying a static mesh to the now invisible cube, so the player thinks that the skeletal mesh is accelerating while it's really the static one, tied to the skeletal.

[@SpiritowlTV]

imgur.com/a/p4Rx4 basic fix to the issue with the rotation: 1) Physics Normalize: Basically a huge number so that the values I put into the physics don't have to have soooo many zeros behind it. 2) Sub: (the car mesh) 3) Making the car flip it's turn direction based on the input of the forward movement.

[@nnarcus]

Hey! Thanks a lot, the picture and your explanation is very helpful for a beginner like me

[@MrRafae1]

I have a tons of issues trying to do this in 4.9.. :( "Accessed none "Parent Component" from node (everything) in EventGraph in blueprint "HoverComponent"

[@EnricoUniverse]

+MrRafae1 Same issue here.

[@travispierce9886]

+MrRafae1 did you ever get a handle on this?

[@MrRafae1]

+Travis Pierce I'm afraid not. I've worked around it.

[@Unain]

+MrRafae1 Make sure your hovercomponent InitComponent looks like this: i.imgur.com/5vVXJZo.png Then remake Add Force At Location (uncheck context sensitive if you can't find it) then add the ParentComponent to the target, see: i.imgur.com/GJBzc0Z.png

[@cabelovlie784]

+Unain Hi, I am having the exact same issue as MrRafae1, and followed the instructions you've given (I believe to a T) and still am having the issue.

[@anotherfool9278]

My hover car is moving sideways when I press for it go forward. How do I fix this?

[@chijunky6145]

You either messed up in setting the inputs in project settings, or you're using a Get Left Vector instead of Get Forward Vector, or you may have hooked up the force to the Y value in Add Force node, instead of the X value.

[@AGCreationsflorida]

Hey how would I go about being able to switch from the hovering bp to a fps character? like getting in and out of a vehicle? a link or anything would help alot please

[@MightyTyphoon]

So I applied this to a custom mesh that I made and while the hover component works, I can't get it to move forward or turn even though I didn't get any errors when I compiled the axis events. Is there an extra step for imported meshes that i'm missing?

[@Unain]

+MightyTyphoon Maybe your custom mesh is really heavy, so you need more force applied for it to move forward/turn?

[@MightyTyphoon]

+Unain Welp, that worked. Now I feel dumb for not thinking of that ha ha. Thanks for that though.

[@Unain]

MightyTyphoon No problem :).

[@Kevin-yh8ol]

Nice video! I have one question, how do you tip the car forward, backwards, left and right when accelerating and/or turning?

[@chijunky6145]

So, instead of doing an add force node for forward/backward, use an AddForceAtLocation node instead. For the input location, use the cube's world location, split the vector and subtract around 20 or 30 from the Z, then make the vector again and plug it into the AddForceAtLocation node. This will add force to a lower part of the cube, making the car tilt forward/backward during accelerations. As for the turning, the best I could figure was either making the cube invisible, parenting a skeletal mesh to it that then rotates left/right in an animation, when left/right keys are pushed. OR in the add torque node, hook up the torque force float to the x value aswell as the z value, but not the Y value. You may need to multiply or divide the value going into the x, though, if it's too weak/strong, or multiply by -1 if the car leans the wrong direction when turning.

[@samuelcresswell8719]

mine jump keeps spinning and bounces. any reason why?

[@Archiewhitehead]

Hey man, any idea exactly what to change to make another hover component that will push the vehicle away from a ceiling?

[@Unain]

+Archie Whitehead Add another Hover Component and make that component point upwards with the red arrow. Make sure the trace length on it is a bit bigger and tweak the force number.

[@lvl99paint]

How would one control the acceleration the the vehicle with AddForce? Currently mine just accelerates and decelerates way to quickly. Great video btw.

[@chijunky6145]

You could make a timeline that plays from start when the player presses w/s, the timeline goes from 0 to 1, over say... 3-4 seconds, and then you take the output float and hook it up to a lerp, with A being your max accelerated speed, and B being 0. Hook the output float from the timeline to the Alpha of the lerp, and the result of the lerp to the Add Force node. In this way, you can ramp up the acceleration force from 0 to whatever, based on a time (the length of the timeline.) If you want to adjust individual cars' acceleration speeds, as in the length of the timeline, you can either set the start point of the timeline to a value closer to the end value (eg if the timeline is 3 seconds long, set the start value to 1.5), or you can set the play speed of the timeline by right clicking and typing in the name of your timeline, then dragging off of the node and doing a set play speed node.

[@foolserrand6261]

How would we go about preventing the vehicle from turning without moving forwards first?

[@Unain]

+StealThyPie at 22:50 I do a dot product of the physics movement forward which gives you a float value (this is your current forward speed). Just check if that number is > a certain speed (1 for full speed, 0 for stop, -1 for full backwards speed), and if that's true then apply the torque. Otherwise don't apply the torque.

[@foolserrand6261]

+Unain Ah! Thank you for the quick response, I really appreciate it.

[@shadow79564]

how do you get this to not float in mid-air

[@messyroom9904]

I made something similar in unity as an experiment. It went a little beyond a traditional raycast wheels tho.

[@souvikbanerjee9219]

How can I use this to hover a skeletal mesh?

[@DigitalLoom]

Im so stressed out this is the perfect video i need but when following to the t..... i dont get the same options in my popset simulate physics wont even show up and cast to primitive as well...!! im using 4.18.

[@adamchaggama6614]

Hi i've followed your tutorial step by step and when i press begin play the mesh flyes at a high speed off the map instead of hovering in place.

[@adamchaggama6614]

also does this with any other tutorial ive followed on hovering

[@ChrisBPacheco]

Let me know if this was fixed. Same issue

[@jayadams3339]

Having the same issue 4.14.2

[@jayadams3339]

One thing I noticed is when I use the player in the game to start I can see the line traces off the hover, but they go to a point WAYYYY out front of the car. So I decided to redo entire tut carefully and I have the car set up properly, it doesn't spin away. But at 16:01 when he goes in game the car bounces. I have the line traces and get cubes on the end if it's in range of ground (

[@jayadams3339]

Whoops: had event actor overlap to start... One difference in 4.14 is that when you drag out the init component from event begin play the target is just hover component, and a 'get' component# is dragged out with it.

[@person8203]

is there any noticeable performance impact using blueprints instead of code?

[@DevTechSpectrum]

+person8203 Blueprint is slower, C++ is faster.

[@graywoodforge]

+SoulSpectrum How is it slower? Blueprints are compiled into machine code just as C++ is.

[@DevTechSpectrum]

graywoodforge Old comment, it was later confirmed that the two run the same but its faster to compile BP because its interpreted at run then while C++ required you to compile before its ran and may take awhile depending on your PC. In a nutshell, the two are fine in performance but C++ allows you to do more with the game and engine.

[@person8203]

SoulSpectrum I thought bp ran on a virtual machine at runtime, is that what you meant by interpreted? There's a fairly recent vid on unreals channel where one of the senior programmers gives quite a good explanation. Basically he said bp performance fluctuates depending on how you're using it but will typically be around 10 times slower than c++ (assuming it's not spaghetti), give or take. In real terms though it doesn't seem to be noticeable. Would you say that's still fairly accurate?

[@erikm9768]

Wow. thank you so much for taking the time to make this tutorial, i'm making a jet ski game, but this will be great reference!! Thank you so much!

[@bentripn]

This was extremely helpful for my current project. Thank you very much!

[@christianheisch8472]

You saved my day. Thank you for this great tutorial. It really helped me a lot.

[@DevGods]

Man I’ve been looking for this! Gonna try to implement in C++ thank you for making this. M

[@_chaoshunterz_9497]

i don´t understand why i can only move sidewards instead of back and forward

[@svenrawandreloaded]

>sidewards

[@erikm9768]

One question, how come you are using Add force rather than Add impulse?? I've found that Add impulse more often does what i want , still don't full understand when we need to use Add force

[@Unain]

+blackmagic x docs.unrealengine.com/latest/INT/BlueprintAPI/Physics/index.html Add Force: "Add a force to a single rigid body. This is like a 'thruster'. Good for adding a burst over some (non zero) time. Should be called every frame for the duration of the force. Target is Primitive Component" Add Impulse: "Add an impulse to a single rigid body. Good for one time instant burst. Target is Primitive Component" It might have to do with optimization ;).

[@erikm9768]

I ended up using Add impulse. Even calling every frame for the duration I dont think Add force acts as smoothly as continuously calling Add impulse. One thing to be careful though is that Add impulse requires delta time while Add force does not.

[@Unain]

blackmagic x Ori Cohen from Epic had this to say about it: "Functions like AddForce are framerate independent. When you apply a force of 10 on an object with mass 1, the object will experience an acceleration of 10 cm/s^2 for the duration of the frame. This means if the frame took 3 seconds, the final velocity will be 30 cm/s. If the frame took 2 seconds the final velocity would be 20 cm/s Typically forces are applied over multiple frames for some period of time, and so this is what you want since applying a force for 3 seconds should produce the same change in velocity regardless of the frame rate. An impulse allows you to change velocity instantaneously. You can think of this as a force applied over some period of time. An example of this may be that an object is pushed on for exactly 0.5 seconds. In this case if you applied a force you would not get the correct result unless the frame rate happened to be exactly 0.5 seconds. So in this case you can calculate the impulse as 0.5s * (the force you'd apply) and PhysX will change the velocity accordingly." So the safer way is to go with AddForce, because its framerate independent :).

[@erikm9768]

Hmm...well i dont know which is better. To be honest i think they are identical except you need to multiply by delta time for Add Impulse, which is not a hard thing to do. I understand better how Add Impulse works so its easier to work with it.

[@Unain]

blackmagic x Add Force is the same as Add Impulse without the delta time, because it gets the delta time from the engine directly. This makes it frame independent (which is something you always want, because people have faster/slower computer and you want all physics to be the same for everyone). But just keep it Add Impulse for now and work on the more fun parts of your game, when you get better at it you'll know how it works ;).

[@gecron]

Amazing tutorial, exactly what i was looking for. Thank you very much!! Keep making more please! :)

[@ricopacoo]

Thanks for the tutorial, but I'm having a problem.. when i apply a forward force to the mesh it tilts forward a lot, i can solve this by increasing the angular damping but i have to increase it a lot.. 20 or something.. and the car is very rigid after that.. same happens going backwards.. I'm not specifying any location is the regular add force function.. thanks for the tutorial they are very useful.. forgot to tell you i'm using 4.9 version

[@Unain]

+Giovanni Elgert Did you set your Center of Mass offset to a lower point (@ 26:24)? Go to your static mesh and in the Physics Tab there is a little arrow at the bottom (advanced Physics settings). In that tab set your Center of Mass Offset Z value to about -40. You might have to tweak this value depending on the object you're using (and how heavy it is).

[@ricopacoo]

+Unain Well, I tried to do it on another machine and it works great.. i really dont know what happened but i can go on now.. thanks!

[@Unain]

Giovanni Elgert Weird, glad it worked :).

[@ricopacoo]

+Unain Thanks :) I've created a question on the forums explaining this to see if anyone knows whats happening.. if you want to follow up here is the link answers.unrealengine.com/questions/356098/different-physics-on-different-machines.html

[@ahmetcetinkaya6565]

I have that same problem. I think, it can be solved with "project vector on to plane"

[@CaelAnim8ter]

How can i make a character hop ontop of it, without the vehicle sinking to the ground?

[@Unain]

+Caelan Reid You need to add more force to the components. Hover Force is the variable you want to increase.

[@CaelAnim8ter]

+Unain Nope, i just put it to the maximum value that can fit in the box 99999997952.0 .. I realize i could multiply it. But isn't there a way to reduce the mass acting on it by the weight of the player? (I tryed reducing the mass on the player, that still didn't work) Anyone else able to get a player ontop of it without it sinking?

[@CaelAnim8ter]

+Unain Actually I just figured it out, YOu want to adjust max depentration, to make it not sink to the ground :D :D :D

[@Unain]

Caelan Reid Nice work :).

[@MonstroUK]

Ok so I have everything up and running from the tutorial. Many thanks for that! I have two main problems now though however. 1) After turning on the spot for a period of time, the vehicle stops turning unless forward or reverse are also pressed. 2) The vehicle gets very unstable and 'falls over' if i bump into any physics objects or even hover over them. Do you have any suggestions?

[@ledgarl]

I have de same problem, how to solve this?

[@Avi3ator]

a car cant turn without moving forwards or backwards...

[@ledgarl]

This happens when it is in the air, so the car comes with a strong impulse, it is abruptly stopped

[@asadtrash9407]

1) Probably has to do with the torque value, it is the only thing i can think of. 2) Try lowering your center of mass in your static mesh, higher means more unstable hoovering and flipping over hoovering, lower values make it more stable. If you can't pass through an object and the center of mass is not the cause change the RayTrace length that your components emits (so it hoovers higher). Hope this helps!

[@chijunky6145]

So for anyone reading this now: 1) When determining whether the car should turn left/right based on forward velocity being > 0, if the velocity is neither more nor less than 0, as in if the car is stopped, then the car's turning speed is multiplied by 0. So, if you remove the complicated code that checks the cube's forward velocity and selects a float, making sure it doesn't multiply with the normal turn torque float, then the car will always turn regardless of whether it's stopped or not. However, now you need to determine another way of inverting turn direction when going backwards, this can be done by just checking the input axis value of the event that moves the car forward, if input float is less than 0, then multiply turn rate by -1. You can leave the false option blank, on the branch. This basically does: "If the player is pressing the back key, then invert turn direction." 2) Try setting the center of mass lower, and implementing a button, say 'f', that when you press it it applies around 600000 torque in degrees to the cube, on the x axis. This will let the player flip their car, if it tips over.

[@mattli911]

Awesome!! I'll have to watch this again and follow along. Very cool! I tried to do this myself yesterday, before seeing this video, and I have something kind of working, but it's not stable enough, ect. Thanks!!!

[@xewi60]

omg , that's exactly what i need, if i could press the like button 10000 times i would do it

[@ue4_questions470]

Amazing tutorial. I followed it and works like a charm. I'd just like to know how to make the car tip forwards and backwards when braking and accelerating. I tried doing it like you explained here but I, for the life of me, cannot get it to work. Would appreciate a reply. Keep making awesome videos.

[@Unain]

+UE4_questions If you set the Center of Mass Offset a little lower and a little more forward you will automatically get it to tip forwards/backwards when moving. Center of Mass Offset is located in the Physics Tab advanced section (click the little arrow at the bottom of the Physics tab). The tougher the suspension the less it will tip though, keep that in mind :).

[@ue4_questions470]

My center of mass is lowered and slightly forward. I should note my cube scale is 4 3 1 and not 1 0.8 0.4 as in your tutorial (if I remember correctly). I have had to add more forces to my cube as a result. Could this affect the tipping of it? Thanks again for this amazing tutorial

[@ue4_questions470]

+UE4_questions One side note now that i have tested this my car seems to slam into something invisible and fly into the air. I have no idea what is up with that

[@ty_teynium]

Hello. First time viewing one of your tutorials and I liked to request a tutorial for a simple game at point system. By this I mean marking a point as a destination for the character to go to.

[@TorQueMoD]

Awesome tutorial! Thanks so much for figuring this out!

[@twintek1099]

Movement doesn't work anymore in 5.1.

[@Unain]

Try Marco's Tutorial here: kzbin.info/www/bejne/oaCZnXeJiLObjJo This tutorial is really old at this point.

[@twintek1099]

@@Unain kk

[@twintek1099]

i don't know why i am complaining about a video made 7 years ago using old software lol.

[@Unain]

@@twintek1099 Hehe, personally I would use the UE5 vehicle system for stuff like this now: docs.unrealengine.com/5.0/en-US/vehicles-in-unreal-engine/

[@TheWarrior441]

im having trouble ,it not floating

[@SnoozeIRTL]

I did exactly what you did, and I redid it twice, and It's saying "'Mesh Component' is already a 'Static Mesh Component', so you don't need to Cast to Primitive component." I continued without it and it made the function fail, so I added it back in and it still wont let me. I made a new HoverComponent and started all over and I'm getting the same results. Cue "welcome to the wonderful world of coding, kid"

[@Amira2643]

+SnoozeIRTL it dosent matter if u add it or not make sure to add the ParentComponent to the Force , Linear/Angular Damping Target and it works

[@travispierce9886]

+sima andrei you're a lifesaver!!

[@travispierce9886]

+sima andrei I lied. Now it's popping up telling me "Error Accessed None 'ParentComponent' from node Add Force at Location in graph 'EventGraph' in blueprint HoverComponent"

[@Unain]

+Travis Pierce Remake the Add Force At Location by dragging from the ParentComponent in your HoverComponent blueprint. It should look like this: i.imgur.com/GJBzc0Z.png

[@travispierce9886]

So crazy how the little things like that work.. Ha! Thank you so much for all of this, man!!!

[@jefffsfff1783]

Question: Is all this blueprint stuff supposed to be common sense and I'm dumb, or is it common to find this very complicated?

[@indieartsmidwest4042]

After a while you'll start conjuring up your own style of blueprints based on references you've seen online or from previous tutorials. I usually take a bunch of screenshots so I don't have to reopen a uproject.

[@Unain]

Can't reply to you directly Lewin, but if you make it so that you only are able to apply forward force when you have at least 1 wheel on the ground, you won't take off :).

[@EnigmaGameMaster]

+Unain For me, it's not smooth at all and the car doesn't fall normally when going off a ledge. It feels like the friction with the air is insanely high.

[@Unain]

+Enigma That's the linear damping. You could make it so if you're in the air (no tracelines are hitting the floor) that the linear damping = 0.01 (no friction in the air). It is possible to make the vehicle hover without changing the linear damping, but that requires a lot more math.

[@EnigmaGameMaster]

***** Thanks! So I suppose I just play around in the "false" output instead of the "true" and add a linear dampling modifier on both so that it sets the settings accordingly?

[@Unain]

Enigma Yep, but that would check only 1 wheel, so you might need to set a boolean that you can check in your vehicle blueprint to see if all 4 wheels are off the ground :).

[@EnigmaGameMaster]

***** Will do. I really like Unreal Engine, I'm just starting to learn how it works, but coming from Unity, I can say it's much easier to work with and the graphics are amazing! Thanks for the help and the tutorials! :D

[@chwanpang4750]

How do I stop my shaders from messing up

[@chwanpang4750]

I got problems with any object

[@error_5026]

hey i cant get init component to show up.

[@error_5026]

i solved it type in what ever you named the scene component other than init component and it should pull it up.

[@svens3722]

if someone have problems for me was addin a physic material to the mesh the solution

[@jonaskorte6873]

It just falls to the ground!! Please help me!

[@jonaskorte6873]

Fixed it! Connected The HoverF (Hover Force) variable to alpha and the other in a with the lerp!!