Snapping direction to forward/backward/left/right

Scripting
1

Alright I’m working with a game on a grid with a click to move feature to navigate from tile to tile. The last part of the movement I need is when the player arrives at the tile it needs to change its rotation to be looking either 0 degrees, 90 degrees, 180 degrees, or -90 degrees relative to the view. Basically if the player isn’t moving it is snapped to one of the 4 directions. I’m not sure how to find which is the closest rotation direction to snap to, any thoughts?

I’ve considered just getting the player’s current rotation and comparing it to the closest 2 rotations, but I’m not exactly sure how to make that work in code.

2

You probably want to compare transform.forward to the cardinal directions using Vector3.Angle. Comparing two quaternions is confusing, but comparing two direction vectors is easy.

3

Hm ok I’ll give that a whirl. I’ve never used Vector3.angle before so this might get interesting. Thanks for the help

4

It’s pretty straightforward.

float angleBetween = Vector3.Angle(transform.forward, Vector3.forward);
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