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besogo.all.js
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besogo.all.js
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/*
MIT License
Copyright (c) 2015-2018 Ye Wang
https://yewang.github.io/besogo/
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
(function() { // Main components
'use strict';
var besogo = window.besogo = window.besogo || {}; // Establish our namespace
besogo.VERSION = '0.0.2-alpha';
besogo.create = function(container, options) {
var editor, // Core editor object
resizer, // Auto-resizing function
boardDiv, // Board display container
panelsDiv, // Parent container of panel divs
makers = { // Map to panel creators
control: besogo.makeControlPanel,
names: besogo.makeNamesPanel,
hint: besogo.makeHintPanel,
comment: besogo.makeCommentPanel,
tool: besogo.makeToolPanel,
tree: besogo.makeTreePanel,
file: besogo.makeFilePanel
},
insideText = container.textContent || container.innerText || '',
i, panelName; // Scratch iteration variables
container.className += ' besogo-container'; // Marks this div as initialized
// Process options and set defaults
options = options || {}; // Makes option checking simpler
options.size = besogo.parseSize(options.size || 19);
options.coord = options.coord || 'none';
options.tool = options.tool || 'auto';
if (options.panels === '') {
options.panels = [];
}
options.panels = options.panels || 'control+names+comment+tool+tree+file';
if (typeof options.panels === 'string') {
options.panels = options.panels.split('+');
}
options.path = options.path || '';
if (options.shadows === undefined) {
options.shadows = 'auto';
} else if (options.shadows === 'off') {
options.shadows = false;
}
// Make the core editor object
editor = besogo.makeEditor(options.size.x, options.size.y);
container.editor = editor;
editor.setTool(options.tool);
editor.setCoordStyle(options.coord);
if (options.realstones) { // Using realistic stones
editor.REAL_STONES = true;
editor.SHADOWS = options.shadows;
} else { // SVG stones
editor.SHADOWS = (options.shadows && options.shadows !== 'auto');
}
if (options.zoom) { // Set initial zoom value if given
editor.setZoom(+options.zoom)
}
if (!options.nokeys) { // Add keypress handler unless nokeys option is truthy
addKeypressHandler(container, editor);
}
if (options.sgf) { // Load SGF file from URL
try {
fetchParseLoad(options.sgf, editor, options.path);
} catch(e) {
// Silently fail on network error
}
} else if (insideText.match(/\s*\(\s*;/)) { // Text content looks like an SGF file
parseAndLoad(insideText, editor);
navigatePath(editor, options.path); // Navigate editor along path
}
if (typeof options.variants === 'number' || typeof options.variants === 'string') {
editor.setVariantStyle(+options.variants); // Converts to number
}
while (container.firstChild) { // Remove all children of container
container.removeChild(container.firstChild);
}
boardDiv = makeDiv('besogo-board'); // Create div for board display
besogo.makeBoardDisplay(boardDiv, editor); // Create board display
if (!options.nowheel) { // Add mousewheel handler unless nowheel option is truthy
addWheelHandler(boardDiv, editor);
}
if (options.panels.length > 0) { // Only create if there are panels to add
panelsDiv = makeDiv('besogo-panels');
for (i = 0; i < options.panels.length; i++) {
panelName = options.panels[i];
if (makers[panelName]) { // Only add if creator function exists
makers[panelName](makeDiv('besogo-' + panelName, panelsDiv), editor);
}
}
if (!panelsDiv.firstChild) { // If no panels were added
container.removeChild(panelsDiv); // Remove the panels div
panelsDiv = false; // Flags panels div as removed
}
}
if (options.resize === 'fixed') {
setDimensions(container.clientWidth, container.clientHeight);
} else { // Add auto-resizing unless resize option is "fixed"
resizer = function() {
var // height = window.innerHeight, // Viewport height
height = parseFloat(getComputedStyle(container.parentElement).height),
// Calculated width of parent element
width = parseFloat(getComputedStyle(container.parentElement).width),
minPanelsWidth = +(options.minpanelswidth || 350),
minPanelsHeight = +(options.minpanelsheight || 350),
// Calculated dimensions for the panels div
panelsWidth,
panelsHeight;
if (width >= height) { // Landscape mode
container.style['flex-direction'] = 'row';
panelsWidth = (width - height >= minPanelsWidth) ? (width - height) : minPanelsWidth;
panelsDiv.style.height = height + 'px';
panelsDiv.style.width = panelsWidth + 'px';
boardDiv.style.height = height + 'px';
boardDiv.style.width = (width - panelsWidth) + 'px';
} else { // Portrait mode
container.style['flex-direction'] = 'column';
panelsHeight = (height - width >= minPanelsHeight) ? (height - width) : minPanelsHeight;
panelsDiv.style.height = panelsHeight + 'px';
panelsDiv.style.width = width + 'px';
boardDiv.style.height = (height - panelsHeight) + 'px';
boardDiv.style.width = width + 'px';
}
};
window.addEventListener("resize", resizer);
resizer(); // Initial div sizing
}
// Sets dimensions with optional height param
function setDimensions(width, height) {
if (height && width > height) { // Landscape mode
container.style['flex-direction'] = 'row';
boardDiv.style.height = height + 'px';
boardDiv.style.width = height + 'px';
if (panelsDiv) {
panelsDiv.style.height = height + 'px';
panelsDiv.style.width = (width - height) + 'px';
}
} else { // Portrait mode (implied if height is missing)
container.style['flex-direction'] = 'column';
boardDiv.style.height = width + 'px';
boardDiv.style.width = width + 'px';
if (panelsDiv) {
if (height) { // Only set height if param present
panelsDiv.style.height = (height - width) + 'px';
}
panelsDiv.style.width = width + 'px';
}
}
}
// Creates and adds divs to specified parent or container
function makeDiv(className, parent) {
var div = document.createElement("div");
if (className) {
div.className = className;
}
parent = parent || container;
parent.appendChild(div);
return div;
}
}; // END function besogo.create
// Parses size parameter from SGF format
besogo.parseSize = function(input) {
var matches,
sizeX,
sizeY;
input = (input + '').replace(/\s/g, ''); // Convert to string and remove whitespace
matches = input.match(/^(\d+):(\d+)$/); // Check for #:# pattern
if (matches) { // Composed value pattern found
sizeX = +matches[1]; // Convert to numbers
sizeY = +matches[2];
} else if (input.match(/^\d+$/)) { // Check for # pattern
sizeX = +input; // Convert to numbers
sizeY = +input; // Implied square
} else { // Invalid input format
sizeX = sizeY = 19; // Default size value
}
if (sizeX > 52 || sizeX < 1 || sizeY > 52 || sizeY < 1) {
sizeX = sizeY = 19; // Out of range, set to default
}
return { x: sizeX, y: sizeY };
};
// Automatically converts document elements into besogo instances
besogo.autoInit = function() {
var allDivs = document.getElementsByTagName('div'), // Live collection of divs
targetDivs = [], // List of divs to auto-initialize
options, // Structure to hold options
i, j, attrs; // Scratch iteration variables
for (i = 0; i < allDivs.length; i++) { // Iterate over all divs
if ( (hasClass(allDivs[i], 'besogo-editor') || // Has an auto-init class
hasClass(allDivs[i], 'besogo-viewer') ||
hasClass(allDivs[i], 'besogo-diagram')) &&
!hasClass(allDivs[i], 'besogo-container') ) { // Not already initialized
targetDivs.push(allDivs[i]);
}
}
for (i = 0; i < targetDivs.length; i++) { // Iterate over target divs
options = {}; // Clear the options struct
if (hasClass(targetDivs[i], 'besogo-editor')) {
options.panels = ['control', 'names', 'comment', 'tool', 'tree', 'file'];
options.tool = 'auto';
} else if (hasClass(targetDivs[i], 'besogo-viewer')) {
options.panels = ['control', 'names', 'comment'];
options.tool = 'navOnly';
} else if (hasClass(targetDivs[i], 'besogo-diagram')) {
options.panels = [];
options.tool = 'navOnly';
}
attrs = targetDivs[i].attributes;
for (j = 0; j < attrs.length; j++) { // Load attributes as options
options[attrs[j].name] = attrs[j].value;
}
besogo.create(targetDivs[i], options);
}
function hasClass(element, str) {
return (element.className.split(' ').indexOf(str) !== -1);
}
};
// Sets up keypress handling
function addKeypressHandler(container, editor) {
if (!container.getAttribute('tabindex')) {
container.setAttribute('tabindex', '0'); // Set tabindex to allow div focusing
}
container.addEventListener('keydown', function(evt) {
evt = evt || window.event;
switch (evt.keyCode) {
case 33: // page up
editor.prevNode(10);
break;
case 34: // page down
editor.nextNode(10);
break;
case 35: // end
editor.nextNode(-1);
break;
case 36: // home
editor.prevNode(-1);
break;
case 37: // left
if ( evt.shiftKey ) {
editor.prevBranchPoint();
} else {
editor.prevNode(1);
}
break;
case 38: // up
editor.nextSibling(-1);
break;
case 39: // right
editor.nextNode(1);
break;
case 40: // down
editor.nextSibling(1);
break;
case 46: // delete
editor.cutCurrent();
break;
} // END switch (evt.keyCode)
if (evt.keyCode >= 33 && evt.keyCode <= 40) {
evt.preventDefault(); // Suppress page nav controls
}
}); // END func() and addEventListener
} // END function addKeypressHandler
// Sets up mousewheel handling
function addWheelHandler(boardDiv, editor) {
boardDiv.addEventListener('wheel', function(evt) {
evt = evt || window.event;
if (evt.deltaY > 0) {
editor.nextNode(1);
evt.preventDefault();
} else if (evt.deltaY < 0) {
editor.prevNode(1);
evt.preventDefault();
}
});
}
// Parses SGF string and loads into editor
function parseAndLoad(text, editor) {
var sgf;
try {
sgf = besogo.parseSgf(text);
} catch (error) {
return; // Silently fail on parse error
}
besogo.loadSgf(sgf, editor);
}
// Fetches text file at url from same domain
function fetchParseLoad(url, editor, path) {
var http = new XMLHttpRequest();
http.onreadystatechange = function() {
if (http.readyState === 4 && http.status === 200) { // Successful fetch
parseAndLoad(http.responseText, editor);
navigatePath(editor, path);
}
};
http.overrideMimeType('text/plain'); // Prevents XML parsing and warnings
http.open("GET", url, true); // Asynchronous load
http.send();
}
function navigatePath(editor, path) {
var subPaths,
i, j; // Scratch iteration variables
path = path.split(/[Nn]+/); // Split into parts that start in next mode
for (i = 0; i < path.length; i++) {
subPaths = path[i].split(/[Bb]+/); // Split on switches into branch mode
executeMoves(subPaths[0], false); // Next mode moves
for (j = 1; j < subPaths.length; j++) { // Intentionally starting at 1
executeMoves(subPaths[j], true); // Branch mode moves
}
}
function executeMoves(part, branch) {
var i;
part = part.split(/\D+/); // Split on non-digits
for (i = 0; i < part.length; i++) {
if (part[i]) { // Skip empty strings
if (branch) { // Branch mode
if (editor.getCurrent().children.length) {
editor.nextNode(1);
editor.nextSibling(part[i] - 1);
}
} else { // Next mode
editor.nextNode(+part[i]); // Converts to number
}
}
}
}
}
})(); // END closure
besogo.makeBoardDisplay = function(container, editor) {
'use strict';
var CELL_SIZE = 88, // Including line width
COORD_MARGIN = 75, // Margin for coordinate labels
EXTRA_MARGIN = 6, // Extra margin on the edge of board
BOARD_MARGIN, // Total board margin
// Board size parameters
sizeX = editor.getCurrent().getSize().x,
sizeY = editor.getCurrent().getSize().y,
svg, // Holds the overall board display SVG element
stoneGroup, // Group for stones
markupGroup, // Group for markup
hoverGroup, // Group for hover layer
markupLayer, // Array of markup layer elements
hoverLayer, // Array of hover layer elements
randIndex, // Random index for stone images
TOUCH_FLAG = false, // Flag for touch interfaces
xDown = null, // Touch event start flags
yDown = null;
initializeBoard(editor.getCoordStyle(), editor.getZoom()); // Initialize SVG element and draw the board
container.appendChild(svg); // Add the SVG element to the document
editor.addListener(update); // Register listener to handle editor/game state updates
redrawAll(editor.getCurrent()); // Draw stones, markup and hover layer
// Set listener to detect touch interfaces
container.addEventListener('touchstart', setTouchFlag);
// Function for setting the flag for touch interfaces
function setTouchFlag () {
TOUCH_FLAG = true; // Set flag to prevent needless function calls
hoverLayer = []; // Drop hover layer references, kills events
svg.removeChild(hoverGroup); // Remove hover group from SVG
// Remove self when done
container.removeEventListener('touchstart', setTouchFlag);
}
container.addEventListener('touchstart', handleTouchStart, false);
container.addEventListener('touchmove', handleTouchMove, false);
function handleTouchStart(evt) {
xDown = evt.touches[0].clientX;
yDown = evt.touches[0].clientY;
}
function handleTouchMove(evt) {
var xUp = evt.touches[0].clientX,
yUp = evt.touches[0].clientY,
xDiff, yDiff;
if ( ! xDown || ! yDown ) {
return;
}
xDiff = xDown - xUp;
yDiff = yDown - yUp;
if ( Math.abs( xDiff ) > Math.abs( yDiff ) ) {
if ( xDiff > 0 ) {
editor.nextNode(1);
} else {
editor.prevNode(1);
}
} else {
if ( yDiff > 0 ) {
editor.nextSibling(1);
} else {
editor.nextSibling(-1);
}
}
xDown = null;
yDown = null;
}
// Initializes the SVG and draws the board
function initializeBoard(coord, zoom) {
drawBoard(coord, zoom); // Initialize the SVG element and draw the board
stoneGroup = besogo.svgEl("g");
markupGroup = besogo.svgEl("g");
svg.appendChild(stoneGroup); // Add placeholder group for stone layer
svg.appendChild(markupGroup); // Add placeholder group for markup layer
if (!TOUCH_FLAG) {
hoverGroup = besogo.svgEl("g");
svg.appendChild(hoverGroup);
}
addEventTargets(); // Add mouse event listener layer
if (editor.REAL_STONES) { // Generate index for realistic stone images
randomizeIndex();
}
}
// Callback for board display redraws
function update(msg) {
var current = editor.getCurrent(),
currentSize = current.getSize(),
reinit = false, // Board redraw flag
oldSvg = svg;
// Check if board size has changed
if (currentSize.x !== sizeX || currentSize.y !== sizeY || msg.coord || msg.zoom) {
sizeX = currentSize.x;
sizeY = currentSize.y;
initializeBoard(msg.coord || editor.getCoordStyle(), msg.zoom || editor.getZoom());
container.replaceChild(svg, oldSvg);
reinit = true; // Flag board redrawn
}
// Redraw stones only if needed
if (reinit || msg.navChange || msg.stoneChange) {
redrawStones(current);
redrawMarkup(current);
redrawHover(current);
} else if (msg.markupChange || msg.treeChange) {
redrawMarkup(current);
redrawHover(current);
} else if (msg.tool || msg.label) {
redrawHover(current);
}
}
function redrawAll(current) {
redrawStones(current);
redrawMarkup(current);
redrawHover(current);
}
// Initializes the SVG element and draws the board
function drawBoard(coord, zoom) {
var boardWidth,
boardHeight,
string = "", // Path string for inner board lines
i; // Scratch iteration variable
BOARD_MARGIN = (coord === 'none' ? 0 : COORD_MARGIN) + EXTRA_MARGIN;
boardWidth = 2*BOARD_MARGIN + sizeX*CELL_SIZE;
boardHeight = 2*BOARD_MARGIN + sizeY*CELL_SIZE;
var viewBoxWidth = boardWidth / zoom;
var viewBoxHeight = boardHeight / zoom;
var viewBoxMinX = boardWidth - viewBoxWidth;
var viewBoxMinY = 0;
svg = besogo.svgEl("svg", { // Initialize the SVG element
width: "100%",
height: "100%",
viewBox: `${viewBoxMinX} ${viewBoxMinY} ${viewBoxWidth} ${viewBoxHeight}`
});
svg.appendChild(besogo.svgEl("rect", { // Fill background color
width: boardWidth,
height: boardHeight,
'class': 'besogo-svg-board'
}) );
svg.appendChild(besogo.svgEl("rect", { // Draw outer square of board
width: CELL_SIZE*(sizeX - 1),
height: CELL_SIZE*(sizeY - 1),
x: svgPos(1),
y: svgPos(1),
'class': 'besogo-svg-lines'
}) );
for (i = 2; i <= (sizeY - 1); i++) { // Horizontal inner lines
string += "M" + svgPos(1) + "," + svgPos(i) + "h" + CELL_SIZE*(sizeX - 1);
}
for (i = 2; i <= (sizeX - 1); i++) { // Vertical inner lines
string += "M" + svgPos(i) + "," + svgPos(1) + "v" + CELL_SIZE*(sizeY - 1);
}
svg.appendChild( besogo.svgEl("path", { // Draw inner lines of board
d: string,
'class': 'besogo-svg-lines'
}) );
drawHoshi(); // Draw the hoshi points
if (coord !== 'none') {
drawCoords(coord); // Draw the coordinate labels
}
}
// Draws coordinate labels on the board
function drawCoords(coord) {
var labels = besogo.coord[coord](sizeX, sizeY),
labelXa = labels.x, // Top edge labels
labelXb = labels.xb || labels.x, // Bottom edge
labelYa = labels.y, // Left edge
labelYb = labels.yb || labels.y, // Right edge
shift = COORD_MARGIN + 10,
i, x, y; // Scratch iteration variable
for (i = 1; i <= sizeX; i++) { // Draw column coordinate labels
x = svgPos(i);
drawCoordLabel(x, svgPos(1) - shift, labelXa[i]);
drawCoordLabel(x, svgPos(sizeY) + shift, labelXb[i]);
}
for (i = 1; i <= sizeY; i++) { // Draw row coordinate labels
y = svgPos(i);
drawCoordLabel(svgPos(1) - shift, y, labelYa[i]);
drawCoordLabel(svgPos(sizeX) + shift, y, labelYb[i]);
}
function drawCoordLabel(x, y, label) {
var element = besogo.svgEl("text", {
x: x,
y: y,
dy: ".65ex", // Seems to work for vertically centering these fonts
"font-size": 32,
"text-anchor": "middle", // Horizontal centering
"font-family": "Helvetica, Arial, sans-serif",
fill: 'black'
});
element.appendChild( document.createTextNode(label) );
svg.appendChild(element);
}
}
// Draws hoshi onto the board at procedurally generated locations
function drawHoshi() {
var cx, cy, // Center point calculation
pathStr = ""; // Path string for drawing star points
if (sizeX % 2 && sizeY % 2) { // Draw center hoshi if both dimensions are odd
cx = (sizeX - 1)/2 + 1; // Calculate the center of the board
cy = (sizeY - 1)/2 + 1;
drawStar(cx, cy);
if (sizeX >= 17 && sizeY >= 17) { // Draw side hoshi if at least 17x17 and odd
drawStar(4, cy);
drawStar(sizeX - 3, cy);
drawStar(cx, 4);
drawStar(cx, sizeY - 3);
}
}
if (sizeX >= 11 && sizeY >= 11) { // Corner hoshi at (4, 4) for larger sizes
drawStar(4, 4);
drawStar(4, sizeY - 3);
drawStar(sizeX - 3, 4);
drawStar(sizeX - 3, sizeY - 3);
} else if (sizeX >= 8 && sizeY >= 8) { // Corner hoshi at (3, 3) for medium sizes
drawStar(3, 3);
drawStar(3, sizeY - 2);
drawStar(sizeX - 2, 3);
drawStar(sizeX - 2, sizeY - 2);
} // No corner hoshi for smaller sizes
if (pathStr) { // Only need to add if hoshi drawn
svg.appendChild( besogo.svgEl('path', { // Drawing circles via path points
d: pathStr, // Hack to allow radius adjustment via stroke-width
'stroke-linecap': 'round', // Makes the points round
'class': 'besogo-svg-hoshi'
}) );
}
function drawStar(i, j) { // Extend path string to draw star point
pathStr += "M" + svgPos(i) + ',' + svgPos(j) + 'l0,0'; // Draws a point
}
}
// Remakes the randomized index for stone images
function randomizeIndex() {
var maxIndex = besogo.BLACK_STONES * besogo.WHITE_STONES,
i, j;
randIndex = [];
for (i = 1; i <= sizeX; i++) {
for (j = 1; j <= sizeY; j++) {
randIndex[fromXY(i, j)] = Math.floor(Math.random() * maxIndex);
}
}
}
// Adds a grid of squares to register mouse events
function addEventTargets() {
var element,
i, j;
for (i = 1; i <= sizeX; i++) {
for (j = 1; j <= sizeY; j++) {
element = besogo.svgEl("rect", { // Make a transparent event target
x: svgPos(i) - CELL_SIZE/2,
y: svgPos(j) - CELL_SIZE/2,
width: CELL_SIZE,
height: CELL_SIZE,
opacity: 0
});
// Add event listeners, using closures to decouple (i, j)
element.addEventListener("click", handleClick(i, j));
if (!TOUCH_FLAG) { // Skip hover listeners for touch interfaces
element.addEventListener("mouseover", handleOver(i, j));
element.addEventListener("mouseout", handleOut(i, j));
}
svg.appendChild(element);
}
}
}
function handleClick(i, j) { // Returns function for click handling
return function(event) {
// Call click handler in editor
editor.click(i, j, event.ctrlKey, event.shiftKey);
if(!TOUCH_FLAG) {
(handleOver(i, j))(); // Ensures that any updated tool is visible
}
};
}
function handleOver(i, j) { // Returns function for mouse over
return function() {
var element = hoverLayer[ fromXY(i, j) ];
if (element) { // Make tool action visible on hover over
element.setAttribute('visibility', 'visible');
}
};
}
function handleOut(i, j) { // Returns function for mouse off
return function() {
var element = hoverLayer[ fromXY(i, j) ];
if (element) { // Make tool action invisible on hover off
element.setAttribute('visibility', 'hidden');
}
};
}
// Redraws the stones
function redrawStones(current) {
var group = besogo.svgEl("g"), // New stone layer group
shadowGroup, // Group for shadow layer
i, j, x, y, color; // Scratch iteration variables
if (editor.SHADOWS) { // Add group for shawdows
shadowGroup = besogo.svgShadowGroup();
group.appendChild(shadowGroup);
}
for (i = 1; i <= sizeX; i++) {
for (j = 1; j <= sizeY; j++) {
color = current.getStone(i, j);
if (color) {
x = svgPos(i);
y = svgPos(j);
if (editor.REAL_STONES) { // Realistic stone
group.appendChild(besogo.realStone(x, y, color, randIndex[fromXY(i, j)]));
} else { // SVG stone
group.appendChild(besogo.svgStone(x, y, color));
}
if (editor.SHADOWS) { // Draw shadows
shadowGroup.appendChild(besogo.svgShadow(x - 2, y - 4));
shadowGroup.appendChild(besogo.svgShadow(x + 2, y + 4));
}
}
}
}
svg.replaceChild(group, stoneGroup); // Replace the stone group
stoneGroup = group;
}
// Redraws the markup
function redrawMarkup(current) {
var element, i, j, x, y, // Scratch iteration variables
group = besogo.svgEl("g"), // Group holding markup layer elements
lastMove = current.move,
variants = editor.getVariants(),
mark, // Scratch mark state {0, 1, 2, 3, 4, 5}
stone, // Scratch stone state {0, -1, 1}
color; // Scratch color string
markupLayer = []; // Clear the references to the old layer
// Mark all variants first, which allows them to be overwritten with hints later
markRemainingVariants(variants, current, group);
for (i = 1; i <= sizeX; i++) {
for (j = 1; j <= sizeY; j++) {
mark = current.getMarkup(i, j);
if (mark) {
x = svgPos(i);
y = svgPos(j);
stone = current.getStone(i, j);
color = stone; // Stone color int, may be overwriten with class str
if (lastMove && lastMove.x === i && lastMove.y === j) {
color = 'last';
}
else if (checkVariants(variants, current, i, j)) {
color = 'variant';
}
if (typeof mark === 'number') { // Markup is a basic shape
switch(mark) {
case 1: // Green (unnumbered and not used anymore)
element = besogo.svgCircle(x, y, color);
break;
case 2: // Yellow (actually purple)
element = besogo.svgSquare(x, y, color);
if (!stone) { // Check for exclusion if empty
if (current.checkExcluded(i, j, current.moveNumber + 1)) {
group.appendChild(element); // Cache the purple ring
element = besogo.svgBlock(x, y, color);
}
}
break;
case 3: // Missing
element = besogo.svgTriangle(x, y, color);
break;
}
if (mark < 0) { // Negative markup is green hint with number
if (!stone) { // If placing label on empty spot
element = makeBacker(x, y);
group.appendChild(element);
}
element = besogo.svgLabel(x, y, color, -mark + '');
markupLayer[ fromXY(i, j) ] = element;
group.appendChild(element);
element = besogo.svgCircle(x, y, color);
}
} else { // Markup is a label (unused for josekle)
if (!stone) { // If placing label on empty spot
element = makeBacker(x, y);
group.appendChild(element);
}
element = besogo.svgLabel(x, y, color, mark);
markupLayer[ fromXY(i, j) ] = element;
}
group.appendChild(element);
} // END if (mark)
} // END for j
} // END for i
// Mark last move with plus if not already marked
if (lastMove && lastMove.x !== 0 && lastMove.y !== 0) {
i = lastMove.x;
j = lastMove.y;
if (!markupLayer[ fromXY(i, j) ]) { // Last move not marked
element = besogo.svgPlus(svgPos(i), svgPos(j));
group.appendChild(element);
markupLayer[ fromXY(i, j) ] = element;
}
}
svg.replaceChild(group, markupGroup); // Replace the markup group
markupGroup = group;
} // END function redrawMarkup
function makeBacker(x, y) { // Makes a label markup backer at (x, y)
return besogo.svgEl("rect", {
x: x - CELL_SIZE/2,
y: y - CELL_SIZE/2,
height: CELL_SIZE,
width: CELL_SIZE,
opacity: 0.85,
stroke: "none",
'class': 'besogo-svg-board besogo-svg-backer'
});
}
// Checks if (x, y) is in variants
function checkVariants(variants, current, x, y) {
var i, move;
for (i = 0; i < variants.length; i++) {
if (variants[i] !== current) { // Skip current (within siblings)
move = variants[i].move;
if (move && move.x === x && move.y === y) {
return true;
}
}
}
return false;
}
// Marks variants that have not already been marked
function markRemainingVariants(variants, current, group) {
var element,
move, // Variant move
label, // Variant label
stone, // Stone state
i, x, y; // Scratch iteration variables
for (i = 0; i < variants.length; i++) {
if (variants[i] !== current) { // Skip current (within siblings)
move = variants[i].move;
// Check if move, not a pass, and no mark yet
if (move && move.x !== 0 && current.getMarkup(move.x, move.y) >= 0) {
stone = current.getStone(move.x, move.y);
x = svgPos(move.x); // Get SVG positions
y = svgPos(move.y);
if (!stone) { // If placing label on empty spot
element = makeBacker(x, y);
group.appendChild(element);
}
// Label variants with letters A-Z cyclically
label = String.fromCharCode('A'.charCodeAt(0) + (i % 26));
element = besogo.svgLabel(x, y, 'variant', label);
group.appendChild(element);
markupLayer[ fromXY(move.x, move.y) ] = element;
}
}
}
} // END function markRemainingVariants
// Redraws the hover layer
function redrawHover(current) {
if (TOUCH_FLAG) {
return; // Do nothing for touch interfaces
}
var element, i, j, x, y, // Scratch iteration variables
group = besogo.svgEl("g"), // Group holding hover layer elements
tool = editor.getTool(),
children,
stone, // Scratch stone state {0, -1, 1} or move
color; // Scratch color string
hoverLayer = []; // Clear the references to the old layer
group.setAttribute('opacity', '0.35');
if (tool === 'navOnly') { // Render navOnly hover by iterating over children
children = current.children;
for (i = 0; i < children.length; i++) {
stone = children[i].move;
if (stone && stone.x !== 0) { // Child node is move and not a pass
x = svgPos(stone.x);
y = svgPos(stone.y);
element = besogo.svgStone(x, y, stone.color);
element.setAttribute('visibility', 'hidden');
group.appendChild(element);
hoverLayer[ fromXY(stone.x, stone.y) ] = element;
}
}
} else { // Render hover for other tools by iterating over grid
for (i = 1; i <= sizeX; i++) {
for (j = 1; j <= sizeY; j++) {
element = null;
x = svgPos(i);
y = svgPos(j);
stone = current.getStone(i, j);
color = (stone === -1) ? "white" : "black"; // White on black
switch(tool) {
case 'auto':
element = besogo.svgStone(x, y, current.nextMove());
break;
case 'playB':
element = besogo.svgStone(x, y, -1);
break;
case 'playW':
element = besogo.svgStone(x, y, 1);
break;
case 'addB':
if (stone === -1) {
element = besogo.svgCross(x, y, besogo.RED);
} else {
element = besogo.svgEl('g');
element.appendChild(besogo.svgStone(x, y, -1));
element.appendChild(besogo.svgPlus(x, y, besogo.RED));
}
break;
case 'addW':
if (stone === 1) {
element = besogo.svgCross(x, y, besogo.RED);
} else {
element = besogo.svgEl('g');
element.appendChild(besogo.svgStone(x, y, 1));
element.appendChild(besogo.svgPlus(x, y, besogo.RED));
}
break;
case 'addE':
if (stone) {
element = besogo.svgCross(x, y, besogo.RED);
}
break;
case 'clrMark':
break; // Nothing
case 'circle':
element = besogo.svgCircle(x, y, color);
break;
case 'square':
element = besogo.svgSquare(x, y, color);
break;
case 'triangle':
element = besogo.svgTriangle(x, y, color);
break;
case 'cross':
element = besogo.svgCross(x, y, color);
break;
case 'block':
element = besogo.svgBlock(x, y, color);
break;
case 'label':
element = besogo.svgLabel(x, y, stone, editor.getLabel());
break;
} // END switch (tool)
if (element) {
element.setAttribute('visibility', 'hidden');
group.appendChild(element);
hoverLayer[ fromXY(i, j) ] = element;
}
} // END for j
} // END for i
} // END else
svg.replaceChild(group, hoverGroup); // Replace the hover layer group
hoverGroup = group;
} // END function redrawHover
function svgPos(x) { // Converts (x, y) coordinates to SVG position