:s/></>\r</g           Substitute >< with a newline between. g flag means all occurances
=gg                    Auto-format (=) everything from the current line to the top (gg)
dd                     Delete (d) the current line (d)
qb                     Record macro (q) with name 'b'
dd
C-v                    Visual block mode (C-v)
l l j j d              Move right twice, down twice, then delete all in selection
w                      Move one word right (w)
C ,<esc>               Change until end of line (C) insert ','
j .                    Go down (j), repeat last command (.)
j .
V k k                  Visual line mode (V), move up twice (k)
J                      Join all selected lines
j
^                      Jump to the beginning of the line, excluding whitespace
cf>                    Change (c) until (f), inclusively, the character '>'
spriteIndex = <esc>
f< D                   Jump on top of the '<' character then delete to EOL (D)
k J I                  Join (J) and insert at beginning of line, exlcuding whitespace (I)
new Tile(<esc>
A ),<esc>              Append (A) the text '),'
j dd
q                      Finish recording the macro
9@b                    Run the macro (@) named 'b' 9 times
dd
V gg                   Visual line move (V) select up to the top of the file (gg)
2<                     Decrease the indent count (<) twice on selected lines