Snap the camera to the nearest 90 degrees if we're close enough

While playing the game I was bothered by the fact that the camera can get misaligned to where it's just a few degrees shy of straight forward. This makes it annoying to line up some jumps. So now, when you get within 18 degrees of one of the four 90 degree directions, you'll snap straight ahead. I played around with the numbers, and this amount of sensitivity feels best. If you think the number should be lower or higher, let me know. Here is a demonstration of the change: https://www.youtube.com/watch?v=sUO0gDmANLQ

Author: ZakFahey

Source/Actors/Player.cs

@@ -268,20 +268,27 @@ public override void Update()
 		{
 			// Rotate Camera
 			{
-				if (!Controls.BackCamera.Pressed)
+				var rot = new Vec2(cameraTargetForward.X, cameraTargetForward.Y).Angle();
+				if (Controls.BackCamera.Pressed)
+				{
+					rot = Facing.Angle();
+				}
+				else if (Controls.Camera.Value.X != 0)
 				{
-					var rot = new Vec2(cameraTargetForward.X, cameraTargetForward.Y).Angle();
 					rot -= Controls.Camera.Value.X * Time.Delta * 4;
-
-					var angle = Calc.AngleToVector(rot);
-					cameraTargetForward = new(angle, 0);
 				}
 				else
 				{
-					var rot = Facing.Angle();
-					var angle = Calc.AngleToVector(rot);
-					cameraTargetForward = new(angle, 0);
+					// If the camera isn't moving, snap the angle to the nearest 90 degrees if we're close enough
+					float? cameraPositionToSnapTo = CameraPositionToSnapTo(rot, MathF.PI / 10);
+					if (cameraPositionToSnapTo.HasValue)
+					{
+						rot = Calc.AngleApproach(rot, cameraPositionToSnapTo.Value, 4);
+					}
 				}
+
+				var angle = Calc.AngleToVector(rot);
+				cameraTargetForward = new(angle, 0);
 			}
 
 			// Move Camera in / out
@@ -597,6 +604,17 @@ public void GetCameraTarget(out Vec3 cameraLookAt, out Vec3 cameraPosition, out
 		}
 	}
 
+	private float? CameraPositionToSnapTo(float currentAngle, float sensitivity)
+	{
+		for (int i = 0; i < 4; i++)
+		{
+			float angle = i * MathF.PI / 2;
+			if (Calc.AbsAngleDiff(currentAngle, angle) < sensitivity)
+				return angle;
+		}
+		return null;
+	}
+
 	#endregion
 
 	#region Various Methods