//------------------------------------------------------------------------------------------------------------------------
// MoveSelection()
//------------------------------------------------------------------------------------------------------------------------
private void MoveSelection(int moveX, int moveY)
{
int itemIndex = shop.GetSelectedItemIndex();
int currentSelectionX = GetColumnByIndex(itemIndex);
int currentSelectionY = GetRowByIndex(itemIndex);
int requestedSelectionX = currentSelectionX + moveX;
int requestedSelectionY = currentSelectionY + moveY;
if (requestedSelectionX >= 0 && requestedSelectionX < Columns) //check horizontal boundaries
{
int newItemIndex = GetIndexFromGridPosition(requestedSelectionX, requestedSelectionY);
if (newItemIndex >= 0 && newItemIndex <= shop.GetItemCount()) //check vertical boundaries
{
Item item = shop.GetItemByIndex(newItemIndex);
shopController.SelectItem(item);
}
}
}
