Rotating Specific Amount In The Correct Direction on Key Press

Unity Engine
,
3

You’re potentially going to have problems comparing floating point. Here’s why:

Floating (float) point imprecision:

Never test floating point (float) quantities for equality / inequality. Here’s why:

https://starmanta.gitbooks.io/unitytipsredux/content/floating-point.html

https://discussions.unity.com/t/851400/4

https://discussions.unity.com/t/843503/4

“Think of [floating point] as JPEG of numbers.” - orionsyndrome on the Unity3D Forums

I always use this pattern:

Smoothing movement between any two particular values:

https://discussions.unity.com/t/812925/5

You have currentQuantity and desiredQuantity.

  • only set desiredQuantity
  • the code always moves currentQuantity towards desiredQuantity
  • read currentQuantity for the smoothed value

Works for floats, Vectors, Colors, Quaternions, anything continuous or lerp-able.

The code: https://gist.github.com/kurtdekker/fb3c33ec6911a1d9bfcb23e9f62adac4

You can see an example of it here in this project:

https://www.youtube.com/watch?v=BtT1N1lzFns

Specifically here, around line 99 where I set the desiredVisualsFacing based on facing:

https://github.com/kurtdekker/proximity_buttons/blob/master/proximity_buttons/Assets/Demo25DMovement/Level2DFollower.cs

and then line 108 where it lerps towards. I prefer the lerp feel, but you could use MoveTowardsAngle instead.