- if (!shadow || shadow == "-")
- return [];
- let shadowArray = ArrayFun.init(V.size.x, V.size.y, false);
- const squares = shadow.split(",");
- for (let i=0; i<squares.length; i++)
- {
- const rownum = V.size.x - parseInt(squares[i]);
- if (!isNaN(rownum))
- {
- // Shadow a full row
- for (let i=0; i<V.size.y; i++)
- shadowArray[rownum][i] = true;
- continue;
- }
- if (squares[i].length == 1)
- {
- // Shadow a full column
- const colnum = V.ColumnToCoord(squares[i]);
- for (let i=0; i<V.size.x; i++)
- shadowArray[i][colnum] = true;
- continue;
- }
- if (squares[i].indexOf("-") >= 0)
- {
- // Shadow a range of squares, horizontally or vertically
- const firstLastSq = squares[i].split("-");
- const range =
- [
- V.SquareToCoords(firstLastSq[0]),
- V.SquareToCoords(firstLastSq[1])
- ];
- const step =
- [
- range[1].x == range[0].x
- ? 0
- : (range[1].x - range[0].x) / Math.abs(range[1].x - range[0].x),
- range[1].y == range[0].y
- ? 0
- : (range[1].y - range[0].y) / Math.abs(range[1].y - range[0].y)
- ];
- // Convention: range always from smaller to larger number
- for (let x=range[0].x, y=range[0].y; x <= range[1].x && y <= range[1].y;
- x += step[0], y += step[1])
- {
- shadowArray[x][y] = true;
- }
- continue;
- }
- // Shadow just one square:
- const coords = V.SquareToCoords(squares[i]);
- shadowArray[coords.x][coords.y] = true;
- }
- return shadowArray;
+ if (!shadow || shadow == "-")
+ return [];
+ let shadowArray = ArrayFun.init(V.size.x, V.size.y, false);
+ const squares = shadow.split(",");
+ for (let i=0; i<squares.length; i++)
+ {
+ const rownum = V.size.x - parseInt(squares[i]);
+ if (!isNaN(rownum))
+ {
+ // Shadow a full row
+ for (let i=0; i<V.size.y; i++)
+ shadowArray[rownum][i] = true;
+ continue;
+ }
+ if (squares[i].length == 1)
+ {
+ // Shadow a full column
+ const colnum = V.ColumnToCoord(squares[i]);
+ for (let i=0; i<V.size.x; i++)
+ shadowArray[i][colnum] = true;
+ continue;
+ }
+ if (squares[i].indexOf("-") >= 0)
+ {
+ // Shadow a range of squares, horizontally or vertically
+ const firstLastSq = squares[i].split("-");
+ const range =
+ [
+ V.SquareToCoords(firstLastSq[0]),
+ V.SquareToCoords(firstLastSq[1])
+ ];
+ const step =
+ [
+ range[1].x == range[0].x
+ ? 0
+ : (range[1].x - range[0].x) / Math.abs(range[1].x - range[0].x),
+ range[1].y == range[0].y
+ ? 0
+ : (range[1].y - range[0].y) / Math.abs(range[1].y - range[0].y)
+ ];
+ // Convention: range always from smaller to larger number
+ for (let x=range[0].x, y=range[0].y; x <= range[1].x && y <= range[1].y;
+ x += step[0], y += step[1])
+ {
+ shadowArray[x][y] = true;
+ }
+ continue;
+ }
+ // Shadow just one square:
+ const coords = V.SquareToCoords(squares[i]);
+ shadowArray[coords.x][coords.y] = true;
+ }
+ return shadowArray;