void Update()
{
// Shrink the dots in list of dots to destroy
foreach (GameObject dotToDestroy in dotsToDestroy)
{
ShrinkDot(dotToDestroy);
}
// Touch handling
if (Input.touchCount > 0)
{
Touch touch = Input.GetTouch(0);
// If user's finger is touching the screen, figure out which dots the user's picking up
if (touch.phase == TouchPhase.Began || touch.phase == TouchPhase.Moved)
{
RaycastHit2D hit = Physics2D.Raycast(Camera.main.ScreenToWorldPoint((Input.GetTouch(0).position)), Vector2.zero);
// Touched a dot
if (hit.collider != null && hit.collider.gameObject.name == "Dot(Clone)")
{
GameObject dotTouched = hit.collider.gameObject;
DotScript dotTouchedScript = dotTouched.GetComponent("DotScript") as DotScript;
// Determine if we should add the newly touched dot to the list of connected dots.
// If the new dot passed all the tests, add dot to list of connected dots
if (ShouldAddDotToList(dotTouched, dotTouchedScript))
{
dotsTouched.Add(dotTouched);
// If this is the first dot in the list, set the line color of the connecting line to be the color of the dot
if (dotsTouched.Count == 1)
{
vectorLineScript.lineColor = colorIDs[dotTouchedScript.colorID];
}
// Connect this dot to the line
vectorLineScript.AddPoint(dotTouched.transform.position);
}
}
// When user releases the touch, it's time to destroy some dots
}
else if (touch.phase == TouchPhase.Ended)
{
if (dotsTouched.Count > 1)
{
DotScript lastDotInListScript = dotsTouched [dotsTouched.Count - 1].GetComponent("DotScript") as DotScript;
// Keeps track of which columns need replenishing after destroying dots.
// The index is the column number, and the value is the number of dots to
// replenish in that column
int[] dotsToReplenish = new int[gridWidth];
// If dots form a square, destroy all dots on board of matching color
if (FormsSquare(dotsTouched))
{
dotsToReplenish = ShrinkDotsWithColorID(lastDotInListScript.colorID);
// Replenish the board with dots, excluding the color that was just square'd away
StartCoroutine(ReplenishExcludingColorID(lastDotInListScript.colorID, dotsToReplenish));
// Otherwise, destroy the string of connected dots
}
else
{
foreach (GameObject dotTouched in dotsTouched)
{
// Figure out coordinates of dot destroyed and note it in the replenish list
Point point = ScreenCoordsToPoint(dotTouched.transform.position);
dotsToReplenish [point.x] += 1;
// Prepare the dot for destruction
dotsToDestroy.Add(dotTouched);
}
StartCoroutine(ReplenishExcludingColorID(-1, dotsToReplenish));
}
StartCoroutine(DestroyDotsAfterDelay(0.5f));
}
// Clear the list of dots touched and clear the line
if (dotsTouched.Count > 0)
{
dotsTouched.Clear();
vectorLineScript.ClearLine();
}
}
}
}
