Kart-Racing Physics

Great Asset!

How can I add a sound to the kart ?

 

@elektronische: Well, I can't say for sure, but the centre of gravity is set artificially low, so changing the size of the wheels shouldn't make it any more likely to flip. Changing the top speed should also be fine.

@subzer0: I would have a looping audio clip of an engine sound, and then simply alter the volume and pitch based on current mph of the kart. For a more complex sound you can overlay multiple looping sounds with different pitch and volume ranges (e.g. have sound 1 vary from pitch 0.8 at speed 0, to pitch 2.2 at top speed, and sound 2 varying from 1.1 to 1.9, or something like that).

 

Hi,

Is this working with Unity 5?

 

I'm just in the process of updating it today. Should submit to the store over the weekend I hope.

 

That's not a bad idea, I'll see what I can do.

 

How can I adjust the camera POV? I want a more "top down" view. I tried adjusting the camera, but the POV never changes in the game. Are the camera settings hard-coded in a script?

 

On the camera you'll find a CameraController component, you'll need to adjust the offset parameter, which controls the positioning of the camera relative to the kart. It's easiest to adjust this whilst the game is running, so you can get a live preview of the camera's view.

 

when i updated to unity 5, the kart can no longer go up slopes of anything greater than 30 degrees and the wheel colliders are going thru the ground

 

So are you using the latest version (v1.4) of the Kart Physics?
Unity completely changed the underlying physics implementation in Unity5, so some things might require re-tuning if you've made adjustments using Unity 4.6 or earlier. The wheel colliders definitely shouldn't be going through the ground though!

Make sure you're on the latest version, and remember when updating it's always best to make a backup, then delete the entire KartRacingPhysics folder, so you don't get any merging problems from updating in-place.

If it's still behaving strangely, then if you can please package up a small test scene and send it over and I'll take a look.

 

yes deleted old, imported new. unity 5 changed so much that i just downloaded 4.6.5 and recompiled it rather than spend weeks updating to 5. the way it calculates rigidbodies and collider suspension totally messed everything up. if i set it lower to compensate for not being able to go up a steep slope, then it launches into space.

 

Yeah, the physics backend is totally new in Unity 5. It should be quite possible to get the kart behaving how you had it before but it might take a bit of re-tuning, so if you already had it nicely tuned in 4.6 it's probably better to stick with that.

 

Is there any update on this asset ?

 

Not currently, are you waiting for something in particular?

 

If I wanted to add a jump button to the kart controls, how could I go about doing that?

 

Have a look in the example player controller script (Example Scene/Scripts/ExamplePlayerController.cs) - it makes the kart jump when the user presses 'J'. Just adapt that to whatever you need.

 

Oh it does jump! Nice, thanks! I'm going to buy it for Unity 5. Let's try this bad boy out. =D

 

Really loving this asset, I was wondering what way you would go about adding a braking functionality?
Right now I have an AI that is reducing thrust around tighter curves but I think active braking would be better.
Any thoughts?

Thanks again for a simple and more importantly fun implementation!

 

Apologies for the lack of reply - as you discovered, emailing support is definitely the faster way to get a response - I don't always get notifications for posts here for some reason.
In case anyone else wants to know the answer, the kart thrust value includes braking forces. Braking is basically just a deceleration force, so you could write [thrust = enginePower - braking] if you wanted to calculate them separately, but braking is really just the same as having a negative enginePower.

 

Look great but is there any way of implementing the ability to drift round corners like on other kart racing games rather than just reducing your speed when approaching a tight bend...?

 

Yes, you have control over the kart traction, if you lower that it will make the kart more slidey. You can also control something I call 'visual oversteer' - which rotates the model of the kart as you steer, independently of the actual physics. It's not at all physically correct, but it gives a really nice feeling of sliding through the corners.

 

Hi! In new version of Unity, Unity 5.3, I have a problem when the car collide with a bomb. The car goes crazy when I touch them. How I can fix it?

 

Hmm, I'm not sure what change in 5.3 could be causing that. I'll take a look and see if I can reproduce the issue.

 

Ok, I've fixed the issue, obviously something changed in Unity's physics in 5.3. A new version has been submitted to the store, should be live in a few days hopefully (unless they have a large Christmas backlog, in which case in might take a little longer).

 

I'm intrigued, how do you calculate it? And, you said you are using wheel colliders, are you adding them on the fly or through the editor? What's the benefit of adding them through code if the case? Thanks in advance!

 

It's just slightly lower than the average of the 4 wheel positions - it makes the kart a bit more stable when cornering at high speed.
The wheel colliders are set up in code, which means the parameters can be set once on the main kart controller, then they automatically get applied to each wheel - there's no chance of accidentally changing the params on just one wheel for example.

hope that helps.

 

Thank you for the answer. I'm trying to accomplish an arcade style driven vehicle reading from here and from there and Unity physics with wheel collider and so on point me in a realistic direction which I don't need. So, every piece of information is welcome. By the way, you code is fully commented? Thanks again.

 

It's not actually quite how the physics in my asset works, but if you're looking for a tutorial on more arcade-style physics I stumbled upon this the other day - http://blog.spaceduststudios.com/space-dust-racing-unreal-engine-4-arcade-vehicle-physics-tour/

Yes, my code is fully commented.

 

Thanks for the ref. That's what I'm trying so accomplish so I was looking for some code as reference that's why I was asking.

 

I'm thinking of buying your asset... two questions:

1) Can the vehicle drift?
2) Does it use the wheel collider component to move, brake, manage suspension, etc?

Thanks!

 

Yes, there's a special 'traction' parameter which controls how much the vehicle will slide - and also another parameter I call 'visual oversteer' which doesn't affect the physics, but makes the kart look like it's sliding around bends more - this can be useful to give the feeling of sliding, but still keeping the kart easy to control.

It does use the wheel collider component internally, but that's all under the hood - they only get created at runtime.

 

Is there in this package also drifting included, like mariokart style?

 

Yes, you have control over the kart traction, if you lower that it will make the kart more slidey. You can also control something I call 'visual oversteer' - which rotates the model of the kart as you steer, independently of the actual physics. It's not at all physically correct, but it gives a really nice feeling of sliding through the corners.

 

Just bought the asset and am loving it! I'm fairly new to unity and working through some online tutorials. Do you mind explaining your process for creating the track? Thank you!

 

Hi, the track model was created in Blender, then imported into Unity as an fbx. There's not much else to it really, there's a mesh collider on it, but no othet special settings a far as I can remember.

 

Gotcha - thanks!

 

Any video available?
How does it interact with a loop?

 

Your demo page is offline let me know when it gets back on, i would like to test it, thanks!

 

hi. web demo is broken. please re-upload. i wanna take a look

 

Just wondering if this works in 2018? and if you could fix the demo? Thanks!

 

Anyone using this? Looking for a web demo or video of how it looks.

 

Demo page is still offline, so it would appear that support for this asset is no longer available.