private IEnumerator AnimateTiles(Vector2[] points, float duration)
{
if (onAnimationStart != null)
{
onAnimationStart(this);
}
// Make sure we disable collisions with the matches tiles
endTile.SetColliderEnabled(false);
startTile.SetColliderEnabled(false);
// Shift the start tile up slightly so it renders above other grid tiles and the line
startTile.transform.position += new Vector3(0, 0, -0.2f);
if (startTile.gridNode != null)
{
startTile.gridNode.Clear();
}
// Place the line between the depths of start and end
_line = LinePoolManager.Instance.PopLine();
SetLinePositions(_line, points, startTile.transform.position.z + 0.1f);
for (int i = 0; i < points.Length - 1; i++)
{
float timer = 0f;
// Pre-calculate the division
float durationInverse = 1f / duration;
while (timer <= 1f)
{
yield return(null);
// Lerp between the two key points in the path based on the timer
timer += Time.deltaTime * durationInverse;
Vector3 newPos = (Vector3)Vector2.Lerp(points[i], points[i + 1], EaseSineInOut(timer));
newPos.z = startTile.transform.position.z;
startTile.transform.position = newPos;
}
}
// Clean up
_animationRoutine = null;
LinePoolManager.Instance.PushLine(_line);
_line = null;
// Fire the end event before we destroy ourselves
if (onAnimationEnd != null)
{
onAnimationEnd(this);
}
// Kill the animation script and tell the tiles to match with each other
Destroy(this);
SpriteTile.MatchTiles(startTile, endTile);
}
