/**
* Calculates the turn direction based on the user position, next corner, and nextNext corner
* Returns "left", "right", or "straight" if the target is far away or the goal is the next corner
*/
private string GenerateTurnInstruction(Vector3[] path, Vector3 currentUserPos)
{
// if the next corner is too far away OR the goal is the last corner, the user needs to go straight
if (distanceToNextCorner >= maxDistanceToNextCorner || path.Length <= 2)
{
return("straight");
}
var upwardsVector = Vector3.up;
Quaternion targetAngle = Quaternion.LookRotation(nextCorner - currentUserPos);
var unitVectorForward = targetAngle * Vector3.forward;
Quaternion targetAngle2 = Quaternion.LookRotation(nextNextCorner - nextCorner);
var unitVectorForward2 = targetAngle2 * Vector3.forward;
// -1 = left, 1 = right, 0 = backwards/forwards
var directionResult = HelperFunctions.AngleDir(unitVectorForward, unitVectorForward2, upwardsVector);
if (directionResult == -1)
{
return("left");
}
else
{
return("right"); // This ignores the forward/backward result by intention
}
}