将php转换为vba

Question

please I need some help converting this php line into vba I don't need to validate $pre, I just need to compute the changes of any variables in this line (eg: $dx+=$ay..)

$pre = $dy % 2 && ($dx += $ay %2 ? 0.5 : -0.5);

so basically this is my attempt:

If (dy Mod 2) Then
    If ((dx + ay) Mod 2) Then
        dx = dx - 0.5
    Else
        dx = dx + 0.5
    End If
End If

I ran some tests and it I don't get the same results with this vba code

Answer 1

I think it should be:

If (dy Mod 2) Then
    If (ay Mod 2) Then
        dx = dx + 0.5
    Else
       dx = dx - 0.5
    End If
End If

Answer 2

Seems like your second condition isn't correct. The PHP code says $ay %2 but your writing dx+ay % 2

If (dy Mod 2) Then
    If (ay Mod 2) Then
        dx = dx + 0.5
    Else
        dx = dx - 0.5
    End If
End If