private void Backtrack(BoxRayCaster.RayTrigger trigger)
{
Vector2 rayDirection = trigger.RayDirection;
BoxCollider2D box = boxRayCaster.boxCollider2D;
Vector2 nowWorldCenter = transform.TransformPoint(box.offset);
Vector2 rayAbsDirection = new Vector2(Mathf.Abs(rayDirection.x), Mathf.Abs(rayDirection.y));
Vector2 lastWorldCenter = nowWorldCenter - Vector2.Scale(Velocity, rayAbsDirection) * UpdateTime;
float step = trigger.RayStep;
float length = 100;
ThreeRayCast threeRayCast = new ThreeRayCast(lastWorldCenter, rayDirection, step, length, backtrackLayer);
RaycastHit2D? result = threeRayCast.GetNearest();
Debug.Assert(result.HasValue);
Vector2 hitPoint = result.Value.point;
float deltaValue = trigger.GetWorldDirectionValue(lastWorldCenter, hitPoint);
//deltaValue += backtrackWidth;
if (trigger.GetNeedVector2Value(Velocity) != 0)
{
//Vector2 nextWorldCenter = lastWorldCenter + deltaValue / trigger.GetNeedVector2Value(Velocity) * Velocity;
Vector2 nextWorldCenter = lastWorldCenter + deltaValue * rayAbsDirection;
Position += nextWorldCenter - nowWorldCenter;
if (rayDirection.x == 0)
{
Velocity = new Vector2(Velocity.x, 0);
}
else
{
Velocity = new Vector2(0, Velocity.y);
}
}
}
void SetRayValue()
{
if (_direction == Direction.DOWN)
{
rayCenter = _parent.boxCollider2D.offset - _parent.boxCollider2D.size / 2;
rayCenter.x = _parent.boxCollider2D.offset.x;
rayCenter += Vector2.up * _parent.rayLength;
rayDirection = Vector2.down;
rayStep = _parent.boxCollider2D.size.x / 2;
}
else if (_direction == Direction.LEFT)
{
rayCenter = _parent.boxCollider2D.offset;
rayCenter.x = rayCenter.x - _parent.boxCollider2D.size.x / 2;
rayCenter += Vector2.right * _parent.rayLength;
rayDirection = Vector2.left;
rayStep = _parent.boxCollider2D.size.y / 2;
}
else if (_direction == Direction.RIGHT)
{
rayCenter = _parent.boxCollider2D.offset;
rayCenter.x = rayCenter.x + _parent.boxCollider2D.size.x / 2;
rayCenter += Vector2.left * _parent.rayLength;
rayDirection = Vector2.right;
rayStep = _parent.boxCollider2D.size.y / 2;
}
else if (_direction == Direction.UP)
{
rayCenter = _parent.boxCollider2D.offset + _parent.boxCollider2D.size / 2;
rayCenter.x = _parent.boxCollider2D.offset.x;
rayCenter += Vector2.down * _parent.rayLength;
rayDirection = Vector2.up;
rayStep = _parent.boxCollider2D.size.x / 2;
}
rayCenter += rayDirection * _parent.rayLength / 2;
rayStep -= _parent.rayStepOffSet;
Quaternion rotation = _parent.transform.rotation;
Vector3 rayDirectionV3 = new Vector3(rayDirection.x, rayDirection.y, 0);
rayDirectionV3 = rotation * rayDirectionV3;
rayDirection = new Vector2(rayDirectionV3.x, rayDirectionV3.y);
threeRayCast = new ThreeRayCast(rayCenter, rayDirection, rayStep, _parent.rayLength, _parent.rayLayer, _parent.transform);
}
