B4R Code Snippet [B4R] Simulate a TWO dimension array using a ONE dimension Array

This is an absolute brilliant snippet from EREL:
https://b4x.com/android/forum/threads/how-to-convert-a-linear-relation-to-a-x-y.68349/#post-433408

 

[wonder]

This is part of my game code, I hope it's useful.

'Gets the (2D) virtual X-coordinate from a single dimension array, given the index and desired row size (max x-axis value)
Sub getArray2D_X(Index As Int, RowSize As Int) As Int
    Return index Mod rowSize
End Sub

'Gets the (2D) virtual Y-coordinate from a single dimension array, given the index and desired row size (max x-axis value)
Sub getArray2D_Y(Index As Int, RowSize As Int) As Int
    Return Index / RowSize
End Sub

'Gets the Index based of the array's virtual (2D) X, Y and row size (max x-axis value)
Sub getArray2D_Index(X As Int, Y As Int, RowSize As Int) As Int
    Return (Y * RowSize) + X
End Sub