/// <summary>Filters the direction.</summary>
/// <returns>The direction.</returns>
/// <param name="dir">Dir.</param>
/// <param name="dirs">Dirs.</param>
/// <param name="minimumMoveAlignment">Minimum move alignment. from 0 to 1, the minimum Dot product for moving</param>
public Vector3 FilterDirection(Vector3 dir, DirectionMovementIsPossible dirs, float minimumMoveAlignment = 0) {
if (dir == Vector3.zero || dirs == DirectionMovementIsPossible.none) return Vector3.zero;
float fdot = Vector3.Dot (dir, transform.forward);
switch (dirs) {
case DirectionMovementIsPossible.all: break;
case DirectionMovementIsPossible.forwardOnly:
if (fdot > 0 && (minimumMoveAlignment <= 0 || fdot > minimumMoveAlignment))
{ dir = transform.forward; } else { dir = Vector3.zero; } break;
case DirectionMovementIsPossible.forwardOrBackward:
if (fdot != 0 && (minimumMoveAlignment <= 0 || Mathf.Abs(fdot) > minimumMoveAlignment))
{ dir = transform.forward * Mathf.Sign(fdot); } else { dir = Vector3.zero; } break;
case DirectionMovementIsPossible.wasd: {
float rdot = Vector3.Dot (dir, transform.right);
if (Mathf.Abs (rdot) > Mathf.Abs (fdot)) {
if(minimumMoveAlignment <= 0 || Mathf.Abs(rdot) > minimumMoveAlignment)
{ dir = transform.right * Mathf.Sign (rdot); } else { dir = Vector3.zero; }
}
else if(minimumMoveAlignment <= 0 || Mathf.Abs(fdot) > minimumMoveAlignment)
{ dir = transform.forward * Mathf.Sign(fdot); } else { dir = Vector3.zero; }
} break;
}
return dir;
}
/// <summary>call this during a FixedUpdate process to give this agent simple AI movement</summary>
public void Seek(Vector3 target, DirectionMovementIsPossible dirs = DirectionMovementIsPossible.all,
float minimumMoveAlignment = 1-1.0f/128, bool stopIfAlignmentIsntGoodEnough = true) {
CalculateSeek (CalculatePositionForAutomaticMovement(target), out MoveDirection, ref LookDirection);
if (dirs != DirectionMovementIsPossible.all) { MoveDirection = FilterDirection (MoveDirection, dirs, minimumMoveAlignment); }
if (stopIfAlignmentIsntGoodEnough && MoveDirection == Vector3.zero && Acceleration > 0) { IsBrakeOn = true; }
}
