On the way to problems: saving state [not functional yet]

[vchess.git] / public / javascripts / utils / printDiagram.js

diff --git a/public/javascripts/utils/printDiagram.js b/public/javascripts/utils/printDiagram.js
new file mode 100644 (file)
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+++ b/public/javascripts/utils/printDiagram.js
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+// Assuming V(ariantRules) class is loaded.
+// args: object with position (mandatory), orientation, marks (optional)
+function getDiagram(args)
+{
+       const [sizeX,sizeY] = [V.size.x,V.size.y];
+       // Obtain array of pieces images names
+       const board = VariantRules.GetBoard(args.position);
+       const orientation = args.orientation || "w";
+       let markArray = [];
+       if (!!args.marks)
+       {
+               // Turn (human) marks into coordinates
+               markArray = doubleArray(sizeX, sizeY, false);
+               let squares = args.marks.split(",");
+               for (let i=0; i<squares.length; i++)
+               {
+                       const res = /^([a-z]+)([0-9]+)$/i.exec(squares[i]);
+                       const x = sizeX - parseInt(res[2]); //white at bottom, so counting is reversed
+                       const y = res[1].charCodeAt(0)-97; //always one char: max 26, big enough
+                       markArray[x][y] = true;
+               }
+       }
+       let boardDiv = "";
+       const [startX,startY,inc] = orientation == 'w'
+               ? [0, 0, 1]
+               : [sizeX-1, sizeY-1, -1];
+       for (let i=startX; i>=0 && i<sizeX; i+=inc)
+       {
+               boardDiv += "<div class='row'>";
+               for (let j=startY; j>=0 && j<sizeY; j+=inc)
+               {
+                       boardDiv += "<div class='board board" + sizeY + " " +
+                               ((i+j)%2==0 ? "light-square-diag" : "dark-square-diag") + "'>";
+                       if (board[i][j] != V.EMPTY)
+                       {
+                               boardDiv += "<img src='/images/pieces/" +
+                                       V.getPpath(board[i][j]) + ".svg' class='piece'/>";
+                       }
+                       if (!!args.marks && markArray[i][j])
+                               boardDiv += "<img src='/images/mark.svg' class='mark-square'/>";
+                       boardDiv += "</div>";
+               }
+               boardDiv += "</div>";
+       }
+       return boardDiv;
+}