How to set transition condition to >=, <= or ==

I have a animation controller set to:

Code (CSharp):

1.  
2. [any state] => [run]   when speed<5.0
3. [any state] => [fastRun] when speed>5.0
4.  

But when speed is exactly 5.0,then it will not transit to any run state.

 

It doesn't work. Because it is AnyState. When speed<5.0 , it will repeatedly transit to run and fastRun.

 

I doesn't try this, because I'm at home.
But I think if unchecked 'Can Transition to Self', then condition will become:

Code (CSharp):

1.  
2. [any state] => [run]   when speed<5.0 && current state != 'run'
3. [any state] => [fastRun] when speed>4.9 && current state !='fastRun'
4.  

Then, when speed=4.95. If current state is 'run', then it will transit to 'fastRun'. because current state=='run', it will ignore the first transition. And the same as 'fastRun'. And the repeatedly transition occur again.

 

Yeah that sounds about right. You'll be stuck in a loop if the speed is greater than 4.9 and less than 5.0.

So what I typically do when I need || operators in Mecanim is I make two transitions that lead to the same place. So you would end up with 3 transitions that look like this:

Code (CSharp):

1. [any state] => [run]   when speed<5.0 && current state != 'run'
2. [any state] => [run]   when speed > 4.99 && speed < 5.01 && current state != 'run'
3. [any state] => [fastRun] when speed>5.0

That way, when speed is < 5, we can get to 'run'. When speed is 5.0, we also go to run, but we ensure that we're not already there with "Can Transition To Self." (If we didn't do this, two transitions to the same place wouldn't know when not to fire) Finally if speed is > 5.0, we go to 'fast run'.

If speed is 4.999 (or 4.999999) we will correctly transition to 'run'. The only error I can see is if speed is 5.00000001, then it would be less than 5.01 and still greater than 5.0--I'm not sure how precise you need to be, or how many decimal places the floating point values can go before it becomes ridiculous. But if you're only setting the speed directly, you can just ensure it's never > 5 and < 5.01. If you are adding/multiplying the speed, you could clamp to the nearest 5th decimal place, and then change the transition to be 5.000001, which would produce little visual error and that would make sure it's never less than that value.

EDIT: Just realized that the second transition is redundant. At this rate, just use transitions 1 and 3, and edit 1 to be this:

Code (CSharp):

1. [any state] => [run]   when speed<5.000001 && current state != 'run'

Combine that with the decimal clamp and you're good to go

 

Since I can write C# code, ensure speed != 5.0 is much simpler. But I don't like this. Because I have to place the number '5.0' in two places, C# code and Animator Controller. This break the DRY principle.

 

How many of these do you need? If it's just a few, surely you can make a public variable for this stuff in your script and just change it if necessary. But if you truly wanted the code to be independent from what you input to the Animator, you could use the UnityEngine class to retrieve the transition's condition and read the threshold value. Then your script would just match whatever you input to Mecanim.