collapseos/blk/402
Virgil Dupras e0bcf3473e Adjust Grid subsystem
Rename ROWS to LINES (it's what VE uses). Also, don't use COLS and
LINES as immediates in the Grid subsystem: we expect those words to
be available at runtime.
2020-11-10 19:06:39 -05:00

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: XYPOS [ GRID_MEM LITN ] ;
: _cl* COLS LINES * ;
: AT-XY ( x y -- ) LINES * + _cl* MOD XYPOS ! ;
: _lf
XYPOS @ BEGIN ( pos )
0 ( blank ) SWAP TUCK CELL!
1+ DUP COLS MOD NOT UNTIL
_cl* MOD XYPOS ! ;
: _bs 0 ( blank ) XYPOS @ TUCK CELL! ( pos ) 1-
_cl* MOD XYPOS ! ;