protected void OnSpriteRendered()
{
if (Camera.current == null)
{
return;
}
CardinalSprite.Direction calculatedDirection = GetCurrentDirection(Camera.current);
currentDirection = calculatedDirection;
}
void AnimationUpdate()
{
/*
* if (currentDirection != direction.currentDirection)
* {
* UpdateSprite();
* currentDirection = direction.currentDirection;
* }
* else if (currentFrame != frame)
* {
* UpdateSprite();
* currentFrame = frame;
* }
*/
currentDirection = direction.currentDirection;
UpdateSprite();
}
//transform.Rotate(0, currentAngle, 0);
/*
* if (calculatedDirection != currentDirection)
* UpdateSprite(calculatedDirection);
* }
*
* protected void UpdateSprite(CardinalSprite.Direction direction)
* {
* if (!cardinalSprite) return;
* if (!spriteRenderer) return;
* Sprite s = cardinalSprite.south;
*
* // Opposite direction: If you camera is south, we see the back of the object, facing north.
* switch(direction)
* {
* case CardinalSprite.Direction.South:
* s = cardinalSprite.north;
* break;
* case CardinalSprite.Direction.SouthEast:
* s = cardinalSprite.northWest;
* break;
* case CardinalSprite.Direction.East:
* s = cardinalSprite.west;
* break;
* case CardinalSprite.Direction.NorthEast:
* s = cardinalSprite.southWest;
* break;
* case CardinalSprite.Direction.North:
* break;
* case CardinalSprite.Direction.NorthWest:
* s = cardinalSprite.southEast;
* break;
* case CardinalSprite.Direction.West:
* s = cardinalSprite.east;
* break;
* case CardinalSprite.Direction.SouthWest:
* s = cardinalSprite.northEast;
* break;
* }
* spriteRenderer.sprite = s;
*
* currentDirection = direction;
* }
*
*/
protected CardinalSprite.Direction GetCurrentDirection(Camera cam)
{
CardinalSprite.Direction direction = CardinalSprite.Direction.South;
Vector3 localSpacePoint = transform.InverseTransformPoint(cam.transform.position);
// ONEEIGHTHPI offsets so that our unit circle is rotated.
float angle = Mathf.Atan2(localSpacePoint.x, localSpacePoint.z) + ONEEIGTHPI + PI;
angle %= TWOPI;
angle /= TWOPI;
// Opposite direction
// If camera is south, we face north
direction = (CardinalSprite.Direction)(int)(angle * 8.0f);
currentAngle = angle;
return(direction);
}
