Can not hold 4-wheler tires at specific angle

[kemalsaglam2]

Hello. I am trying to make tires of a 4-wheler stay in same anlge for example 45 degree left. When I press the left button tires turn left and when I release the button tires go back to their default angle which is 0. How can I hold the tires for example 30 degree right and stay in that degree for 10 seconds and then turn to default 0 degree?

[Patrik Martin]

Hi and welcome to the forum.

Slightly confused to how you like this to function.

But there are a couple of different solutions to do this.

• Option 1: Configure the input for steering. Then hit record and press the button to turn the wheel and release after desired time. If you need this to be exact you can always record over the time, stop the recording and then pull back the timeline to the exact amount of frames you like to have and hit record again without pressing the steering.
• Option 2: Click on the advanced button for the steering input to configure an offset (makes the button be always pressed, 1 = 100%). Go over the desired time, stop the recording, remove the input offset, pull back the timeline to the desired time for straight steering and record again.

Please note that the steering angle is set in radians so for 30% steering angle you would set the maximum to 0,8660 and then give a 100% input to the 4-wheeler steering.


There is also some other solutions, but would one of these be sufficient?

[kemalsaglam2]

Thanks for the reply but actually I am trying to prevent that "stop recording change offset and start recording again" process.

Closest solution i've found in one week is that I am using a distance ruler limit distances and attach it to 4-whelers "Steering Wheel(Right/Left)" control.

When limit distance value is 0.0 car goes staright when limit distance value is 0.2 car steering wheel turns 0.2 degree right and stays there and car continues to turn rigth at 0.2 degree. If I animate distance ruler node and make limit distance 0.7 car starts to turn right more and turning angle stays at 0.7 and then I animate the distance ruler node and make limit distance value 0.0 again then the car goes straight again. This is exactly what I want. I can control the turning angle by just animating the distance ruler node in the scene. I want to make this exactly the same for the left turns but when I choose "Distance Ruler Limit Distance" as controller, left option diseppears. I want to aplly this exact same process to left turns too.

I am trying to hold steering wheels angle at a specific value for a specific time by just animating a ruler node or anything else etc. I don't want to deal with stop recording change values and record again process.

[Patrik Martin]

Nicely found with the DistanceRuler and linking it to the Input for the 4-wheeler. I was going to write about the DistanceRuler as an option, however, it is slighly more complicated to set up.

The issue is that the distant ruler only outputs positive numbers. So first when you connect you will notice that it will only can turn right. You need negative numbers to be able to do left turns. However, the good news is that there is a trick that can be used to solve this. If you go in to the Advanced setting for the input for the Steering Wheel you can create negative numbers by offsetting the input to have a negative number by default.

Advanced input settings

This means that;

• When the nodes are exactly in the same place it will turn 100% to the left as the input is 0 which then outputs -1 to the steering (-1+0 = -1).

  

  DistanceRuler nodes in same place

• When they are 1/2 overlapping the input is 1 and thus means 0 steering angle (-1+1 = 0).

  

  DistanceRuler nodes half överlapping

• When the nodes are just touching each other the input will be 2 and thus will make the steering be 1, which is fully to the right (-1+2 = 1).

  

  DistanceRuler nodes just touches

Did that do the trick for you?

[kemalsaglam2]

That is exactly what I was trying to do. Thank you so much!