protected override Direction CalculateNextDirection()
{
offset = targetTrans.position - transform.position;
//Find the min angle between the offset vector and eight direction
float minAngle = Vector2.Angle(offset, CommonConstants.DIRECTION_VECTORS[0]);
int minIndex = 0;
for (int i = 1; i < CommonConstants.DIRECTION_VECTORS.Length; i++)
{
float angle = Vector2.Angle(offset, CommonConstants.DIRECTION_VECTORS[i]);
if (angle <= minAngle)
{
minAngle = angle;
minIndex = i;
}
}
return(UtilMapHelpers.VectorToDirection(CommonConstants.DIRECTION_VECTORS[minIndex]));
}
protected override Direction CalculateNextDirection()
{
offset = targetTrans.position - transform.position;
//Init cache value
Vector2[] directionVectors = CommonConstants.DIRECTION_VECTORS;
int directionVectorsLength = directionVectors.Length;
//Find the movable neighbor direction of enemy
List <Vector2> movableDirection = new List <Vector2>();
for (int i = 0; i < directionVectorsLength; i++)
{
if (IsMovable(directionVectors[i]))
{
//Debug.Log("Movable direction: " + UtilMapHelpers.VectorToDirection(directionVectors[i]));
movableDirection.Add(directionVectors[i]);
}
}
//Find the min direction in the movable direction vector list
float minAngle = Vector2.Angle(offset, movableDirection[0]);
int minIndex = 0;
for (int i = 1; i < movableDirection.Count; i++)
{
float angle = Vector2.Angle(offset, movableDirection[i]);
if (angle <= minAngle)
{
minAngle = angle;
minIndex = i;
}
}
//Convert vector to direction
return(UtilMapHelpers.VectorToDirection(movableDirection[minIndex]));
}