index Center Point
Gives center for a position (row, column). Example, item at index 0 is referenced by (0,0) or 6 by (1,2).
Return
centre point of the specified point
Parameters
row
the row position for the inventory item (0-7)
column
the column position for the inventory item. (0-3)
Throws
if x is not between 0 to 3 or y is not between 0 to 6
Finds the center point of the inventory's index
Return
indexCenterPoint of the index param
Parameters
index
0-(Constants.INVENTORY_SIZE-1), index of inventory
Throws
if index is below 0 or above (Constants.INVENTORY_SIZE-1)