chessgroundxx
Version:
lichess.org chess ui
2 lines (1 loc) • 30.9 kB
JavaScript
var Chessground=function(){"use strict";function e(e,t,o){return e(o={path:t,exports:{},require:function(e,t){return function(){throw new Error("Dynamic requires are not currently supported by @rollup/plugin-commonjs")}(null==t&&o.path)}},o.exports),o.exports}var t=e((function(e,t){Object.defineProperty(t,"__esModule",{value:!0}),t.ranks=t.files=t.colors=void 0,t.colors=["white","black"],t.files=["a","b","c","d","e","f","g","h","i"],t.ranks=["0","1","2","3","4","5","6","7","8","9"]})),o=e((function(e,o){function n(e){return[e.charCodeAt(0)-96,e.charCodeAt(1)-48+1]}Object.defineProperty(o,"__esModule",{value:!0}),o.computeSquareCenter=o.createEl=o.isRightButton=o.eventPosition=o.setVisible=o.translateRel=o.translateAbs=o.posToTranslateRel=o.posToTranslateAbs=o.samePiece=o.distanceSq=o.opposite=o.containsX=o.timer=o.memo=o.allPos=o.key2pos=o.pos2key=o.allKeys=o.invRanks=void 0,o.invRanks=[...t.ranks].reverse(),o.allKeys=Array.prototype.concat(...t.files.map(e=>t.ranks.map(t=>e+t))),o.pos2key=function(e){const t=10;return o.allKeys[t*e[0]+e[1]-t-1]},o.key2pos=n,o.allPos=o.allKeys.map(n),o.memo=function(e){let t;const o=()=>(void 0===t&&(t=e()),t);return o.clear=()=>{t=void 0},o},o.timer=()=>{let e;return{start(){e=performance.now()},cancel(){e=void 0},stop(){if(!e)return 0;const t=performance.now()-e;return e=void 0,t}}},o.containsX=function(e,t){return void 0!==e&&-1!==e.indexOf(t)},o.opposite=e=>"white"===e?"black":"white",o.distanceSq=(e,t)=>{const o=e[0]-t[0],n=e[1]-t[1];return o*o+n*n},o.samePiece=(e,t)=>e.role===t.role&&e.color===t.color;const r=(e,t,o,n)=>[(t?e[0]-1:9-e[0])*o,(t?10-e[1]:e[1]-1)*n];o.posToTranslateAbs=e=>{const t=e.width/9,o=e.height/10;return(e,n)=>r(e,n,t,o)},o.posToTranslateRel=(e,t)=>r(e,t,100,100),o.translateAbs=(e,t)=>{e.style.transform=`translate(${t[0]}px,${t[1]}px)`},o.translateRel=(e,t)=>{e.style.transform=`translate(${t[0]}%,${t[1]}%)`},o.setVisible=(e,t)=>{e.style.visibility=t?"visible":"hidden"},o.eventPosition=e=>{var t;return e.clientX||0===e.clientX?[e.clientX,e.clientY]:(null===(t=e.targetTouches)||void 0===t?void 0:t[0])?[e.targetTouches[0].clientX,e.targetTouches[0].clientY]:void 0},o.isRightButton=e=>2===e.buttons||2===e.button,o.createEl=(e,t)=>{const o=document.createElement(e);return t&&(o.className=t),o},o.computeSquareCenter=function(e,t,o){const r=n(e);return t||(r[0]=9-r[0]+1,r[1]=10-r[1]+1),[o.left+o.width/9*(r[0]-1)+o.width/18,o.top+o.height/10*(9-(r[1]-1))+o.height/20]}})),n=e((function(e,t){Object.defineProperty(t,"__esModule",{value:!0}),t.premove=t.advisor=t.knight=void 0;const n=[[4,10],[5,10],[6,10],[4,9],[5,9],[6,9],[4,8],[5,8],[6,8]],r=[[4,3],[5,3],[6,3],[4,2],[5,2],[6,2],[4,1],[5,1],[6,1]];function s(e,t){return Math.abs(e-t)}t.knight=(e,t,o,n)=>{const r=s(e,o),i=s(t,n);return 1===r&&2===i||2===r&&1===i};const i=(e,t,o,n)=>e===o||t===n;function a(e){const t="white"==e?r:n;return(e,o,n,r)=>s(e,n)===s(o,r)&&1===s(e,n)&&t.some(e=>e[0]===n&&e[1]===r)}t.advisor=a,t.premove=function(e,c){const l=e.get(c);if(!l)return[];const d=o.key2pos(c),u=l.role,p="pawn"===u?(f=l.color,(e,t,o,n)=>o===e&&("white"===f?n===t+1:n===t-1)||n===t&&(o===e+1||o===e-1)&&("white"===f?t>5:t<6)):"knight"===u?t.knight:"bishop"===u?function(e){return(t,o,n,r)=>s(t,n)===s(o,r)&&2===s(t,n)&&("white"===e?r<6:r>5)}(l.color):"rook"===u||"cannon"===u?i:"advisor"===u?a(l.color):function(e){const t="white"==e?r:n;return(e,o,n,r)=>(e===n&&1===s(o,r)||o===r&&1===s(e,n))&&t.some(e=>e[0]===n&&e[1]===r)}(l.color);var f;return o.allPos.filter(e=>(d[0]!==e[0]||d[1]!==e[1])&&p(d[0],d[1],e[0],e[1])).map(o.pos2key)}})),r=e((function(e,t){function r(e,...t){e&&setTimeout(()=>e(...t),1)}function s(e){e.premovable.current&&(e.premovable.current=void 0,r(e.premovable.events.unset))}function i(e){const t=e.predroppable;t.current&&(t.current=void 0,r(t.events.unset))}function a(e,t,n){const s=e.pieces.get(t),i=e.pieces.get(n);if(t===n||!s)return!1;const a=i&&i.color!==s.color?i:void 0;return n===e.selected&&p(e),r(e.events.move,t,n,a),function(e,t,n){if(!e.autoCastle)return!1;const r=e.pieces.get(t);if(!r||"king"!==r.role)return!1;const s=o.key2pos(t),i=o.key2pos(n);if(0!==s[1]&&7!==s[1]||s[1]!==i[1])return!1;4!==s[0]||e.pieces.has(n)||(6===i[0]?n=o.pos2key([7,i[1]]):2===i[0]&&(n=o.pos2key([0,i[1]])));const a=e.pieces.get(n);return!(!a||a.color!==r.color||"rook"!==a.role||(e.pieces.delete(t),e.pieces.delete(n),s[0]<i[0]?(e.pieces.set(o.pos2key([6,i[1]]),r),e.pieces.set(o.pos2key([5,i[1]]),a)):(e.pieces.set(o.pos2key([2,i[1]]),r),e.pieces.set(o.pos2key([3,i[1]]),a)),0))}(e,t,n)||(e.pieces.set(n,s),e.pieces.delete(t)),e.lastMove=[t,n],e.check=void 0,r(e.events.change),a||!0}function c(e,t,n,s){if(e.pieces.has(n)){if(!s)return!1;e.pieces.delete(n)}return r(e.events.dropNewPiece,t,n),e.pieces.set(n,t),e.lastMove=[n],e.check=void 0,r(e.events.change),e.movable.dests=void 0,e.turnColor=o.opposite(e.turnColor),!0}function l(e,t,n){const r=a(e,t,n);return r&&(e.movable.dests=void 0,e.turnColor=o.opposite(e.turnColor),e.animation.current=void 0),r}function d(e,t,o){if(g(e,t,o)){const n=l(e,t,o);if(n){const s=e.hold.stop();p(e);const i={premove:!1,ctrlKey:e.stats.ctrlKey,holdTime:s};return!0!==n&&(i.captured=n),r(e.movable.events.after,t,o,i),!0}}else if(function(e,t,o){return t!==o&&v(e,t)&&n.premove(e.pieces,t).includes(o)}(e,t,o))return function(e,t,o,n){i(e),e.premovable.current=[t,o],r(e.premovable.events.set,t,o,n)}(e,t,o,{ctrlKey:e.stats.ctrlKey}),p(e),!0;return p(e),!1}function u(e,t){e.selected=t,v(e,t)?e.premovable.dests=n.premove(e.pieces,t):e.premovable.dests=void 0}function p(e){e.selected=void 0,e.premovable.dests=void 0,e.hold.cancel()}function f(e,t){const o=e.pieces.get(t);return!!o&&("both"===e.movable.color||e.movable.color===o.color&&e.turnColor===o.color)}function g(e,t,o){var n,r;return t!==o&&f(e,t)&&(e.movable.free||!!(null===(r=null===(n=e.movable.dests)||void 0===n?void 0:n.get(t))||void 0===r?void 0:r.includes(o)))}function v(e,t){const o=e.pieces.get(t);return!!o&&e.premovable.enabled&&e.movable.color===o.color&&e.turnColor!==o.color}function m(e){s(e),i(e),p(e)}Object.defineProperty(t,"__esModule",{value:!0}),t.whitePov=t.getSnappedKeyAtDomPos=t.getKeyAtDomPos=t.stop=t.cancelMove=t.playPredrop=t.playPremove=t.isDraggable=t.canMove=t.unselect=t.setSelected=t.selectSquare=t.dropNewPiece=t.userMove=t.baseNewPiece=t.baseMove=t.unsetPredrop=t.unsetPremove=t.setCheck=t.setPieces=t.reset=t.toggleOrientation=t.callUserFunction=void 0,t.callUserFunction=r,t.toggleOrientation=function(e){e.orientation=o.opposite(e.orientation),e.animation.current=e.draggable.current=e.selected=void 0},t.reset=function(e){e.lastMove=void 0,p(e),s(e),i(e)},t.setPieces=function(e,t){for(const[o,n]of t)n?e.pieces.set(o,n):e.pieces.delete(o)},t.setCheck=function(e,t){if(e.check=void 0,!0===t&&(t=e.turnColor),t)for(const[o,n]of e.pieces)"king"===n.role&&n.color===t&&(e.check=o)},t.unsetPremove=s,t.unsetPredrop=i,t.baseMove=a,t.baseNewPiece=c,t.userMove=d,t.dropNewPiece=function(e,t,o,n){const a=e.pieces.get(t);a&&(function(e,t,o){const n=e.pieces.get(t);return!(!n||t!==o&&e.pieces.has(o)||"both"!==e.movable.color&&(e.movable.color!==n.color||e.turnColor!==n.color))}(e,t,o)||n)?(e.pieces.delete(t),c(e,a,o,n),r(e.movable.events.afterNewPiece,a.role,o,{predrop:!1})):a&&function(e,t,o){const n=e.pieces.get(t),r=e.pieces.get(o);return!!n&&(!r||r.color!==e.movable.color)&&e.predroppable.enabled&&("pawn"!==n.role||"1"!==o[1]&&"8"!==o[1])&&e.movable.color===n.color&&e.turnColor!==n.color}(e,t,o)?function(e,t,o){s(e),e.predroppable.current={role:t,key:o},r(e.predroppable.events.set,t,o)}(e,a.role,o):(s(e),i(e)),e.pieces.delete(t),p(e)},t.selectSquare=function(e,t,o){if(r(e.events.select,t),e.selected){if(e.selected===t&&!e.draggable.enabled)return p(e),void e.hold.cancel();if((e.selectable.enabled||o)&&e.selected!==t&&d(e,e.selected,t))return void(e.stats.dragged=!1)}(f(e,t)||v(e,t))&&(u(e,t),e.hold.start())},t.setSelected=u,t.unselect=p,t.canMove=g,t.isDraggable=function(e,t){const o=e.pieces.get(t);return!!o&&e.draggable.enabled&&("both"===e.movable.color||e.movable.color===o.color&&(e.turnColor===o.color||e.premovable.enabled))},t.playPremove=function(e){const t=e.premovable.current;if(!t)return!1;const o=t[0],n=t[1];let i=!1;if(g(e,o,n)){const t=l(e,o,n);if(t){const s={premove:!0};!0!==t&&(s.captured=t),r(e.movable.events.after,o,n,s),i=!0}}return s(e),i},t.playPredrop=function(e,t){const o=e.predroppable.current;let n=!1;if(!o)return!1;if(t(o)){c(e,{role:o.role,color:e.movable.color},o.key)&&(r(e.movable.events.afterNewPiece,o.role,o.key,{predrop:!0}),n=!0)}return i(e),n},t.cancelMove=m,t.stop=function(e){e.movable.color=e.movable.dests=e.animation.current=void 0,m(e)},t.getKeyAtDomPos=function(e,t,n){const r=9,s=10;let i=Math.ceil(r*((e[0]-n.left)/n.width));t||(i=r+1-i);let a=Math.ceil(s-s*((e[1]-n.top)/n.height));return t||(a=s+1-a),i>0&&i<r+1&&a>0&&a<s+1?o.pos2key([i,a]):void 0},t.getSnappedKeyAtDomPos=function(e,t,n,r){const s=o.allPos.filter(t=>e||t),i=s.map(e=>o.computeSquareCenter(o.pos2key(e),n,r)).map(e=>o.distanceSq(t,e)),[,a]=i.reduce((e,t,o)=>e[0]<t?e:[t,o],[i[0],0]);return o.pos2key(s[a])},t.whitePov=function(e){return"white"===e.orientation}})),s=e((function(e,n){Object.defineProperty(n,"__esModule",{value:!0}),n.write=n.read=n.initial=void 0,n.initial="rnbakabnr/9/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/9/RNBAKABNR w";const r={p:"pawn",r:"rook",n:"knight",b:"bishop",a:"advisor",c:"cannon",k:"king"},s={pawn:"p",rook:"r",knight:"n",bishop:"b",advisor:"a",cannon:"c",king:"k"};n.read=function(e){"start"===e&&(e=n.initial),-1!==e.indexOf("[")&&(e=e.slice(0,e.indexOf("[")));const t=new Map;let s=e.split("/").length,i=0;for(const n of e)switch(n){case" ":return t;case"/":if(--s,0===s)return t;i=0;break;case"~":break;default:const e=n.charCodeAt(0);if(e<58)i+="0"===n?9:e-48;else{++i;const e=n.toLowerCase();let a={role:r[e],color:n===e?"black":"white"};t.set(o.pos2key([i,s]),a)}}return t},n.write=function(e){return o.invRanks.map(o=>t.files.map(t=>{const n=e.get(t+o);if(n){const e=s[n.role];return"white"===n.color?e.toUpperCase():e}return"1"}).join("")).join("/").replace(/1{2,}/g,e=>e.length.toString())}})),i=e((function(e,t){function o(e){return"object"==typeof e}Object.defineProperty(t,"__esModule",{value:!0}),t.configure=void 0,t.configure=function(e,t){var n;if((null===(n=t.movable)||void 0===n?void 0:n.dests)&&(e.movable.dests=void 0),function e(t,n){for(const r in n)o(t[r])&&o(n[r])?e(t[r],n[r]):t[r]=n[r]}(e,t),t.fen&&(e.pieces=s.read(t.fen),e.drawable.shapes=[]),t.hasOwnProperty("check")&&r.setCheck(e,t.check||!1),t.hasOwnProperty("lastMove")&&!t.lastMove?e.lastMove=void 0:t.lastMove&&(e.lastMove=t.lastMove),e.selected&&r.setSelected(e,e.selected),(!e.animation.duration||e.animation.duration<100)&&(e.animation.enabled=!1),!e.movable.rookCastle&&e.movable.dests){const t="white"===e.movable.color?"1":"8",o="e"+t,n=e.movable.dests.get(o),r=e.pieces.get(o);if(!n||!r||"king"!==r.role)return;e.movable.dests.set(o,n.filter(e=>!(e==="a"+t&&n.includes("c"+t)||e==="h"+t&&n.includes("g"+t))))}}})),a=e((function(e,t){function n(e,t){const o=e(t);return t.dom.redraw(),o}function r(e,t){return{key:e,pos:o.key2pos(e),piece:t}}function s(e,t){return t.sort((t,n)=>o.distanceSq(e.pos,t.pos)-o.distanceSq(e.pos,n.pos))[0]}Object.defineProperty(t,"__esModule",{value:!0}),t.render=t.anim=void 0,t.anim=function(e,t){return t.animation.enabled?function(e,t){const n=new Map(t.pieces),i=e(t),a=function(e,t){const n=new Map,i=[],a=new Map,c=[],l=[],d=new Map;let u,p,f;for(const[o,s]of e)d.set(o,r(o,s));for(const s of o.allKeys)u=t.pieces.get(s),p=d.get(s),u?p?o.samePiece(u,p.piece)||(c.push(p),l.push(r(s,u))):l.push(r(s,u)):p&&c.push(p);for(const r of l)p=s(r,c.filter(e=>o.samePiece(r.piece,e.piece))),p&&(f=[p.pos[0]-r.pos[0],p.pos[1]-r.pos[1]],n.set(r.key,f.concat(f)),i.push(p.key));for(const o of c)i.includes(o.key)||a.set(o.key,o.piece);return{anims:n,fadings:a}}(n,t);if(a.anims.size||a.fadings.size){const e=t.animation.current&&t.animation.current.start;t.animation.current={start:performance.now(),frequency:1/t.animation.duration,plan:a},e||function e(t,o){const n=t.animation.current;if(void 0===n)return void(t.dom.destroyed||t.dom.redrawNow());const r=1-(o-n.start)*n.frequency;if(r<=0)t.animation.current=void 0,t.dom.redrawNow();else{const o=(s=r)<.5?4*s*s*s:(s-1)*(2*s-2)*(2*s-2)+1;for(const e of n.plan.anims.values())e[2]=e[0]*o,e[3]=e[1]*o;t.dom.redrawNow(!0),requestAnimationFrame((o=performance.now())=>e(t,o))}var s}(t,performance.now())}else t.dom.redraw();return i}(e,t):n(e,t)},t.render=n})),c=e((function(e,t){Object.defineProperty(t,"__esModule",{value:!0}),t.clear=t.cancel=t.end=t.move=t.processDraw=t.start=void 0;const n=["green","red","blue","yellow"];function s(e){requestAnimationFrame(()=>{const t=e.drawable.current;if(t){const o=r.getKeyAtDomPos(t.pos,r.whitePov(e),e.dom.bounds());o||(t.snapToValidMove=!1);const n=o;n!==t.mouseSq&&(t.mouseSq=n,t.dest=n!==t.orig?n:void 0,e.dom.redrawNow()),s(e)}})}function i(e){e.drawable.current&&(e.drawable.current=void 0,e.dom.redraw())}function a(e){var t;const r=(e.shiftKey||e.ctrlKey)&&o.isRightButton(e),s=e.altKey||e.metaKey||(null===(t=e.getModifierState)||void 0===t?void 0:t.call(e,"AltGraph"));return n[(r?1:0)+(s?2:0)]}function c(e){e.onChange&&e.onChange(e.shapes)}t.start=function(e,t){if(t.touches&&t.touches.length>1)return;t.stopPropagation(),t.preventDefault(),t.ctrlKey?r.unselect(e):r.cancelMove(e);const n=o.eventPosition(t),i=r.getKeyAtDomPos(n,r.whitePov(e),e.dom.bounds());i&&(e.drawable.current={orig:i,pos:n,brush:a(t),snapToValidMove:e.drawable.defaultSnapToValidMove},s(e))},t.processDraw=s,t.move=function(e,t){e.drawable.current&&(e.drawable.current.pos=o.eventPosition(t))},t.end=function(e){const t=e.drawable.current;t&&(t.mouseSq&&function(e,t){const o=e=>e.orig===t.orig&&e.dest===t.dest,n=e.shapes.find(o);n&&(e.shapes=e.shapes.filter(e=>!o(e)));n&&n.brush===t.brush||e.shapes.push(t);c(e)}(e.drawable,t),i(e))},t.cancel=i,t.clear=function(e){e.drawable.shapes.length&&(e.drawable.shapes=[],e.dom.redraw(),c(e.drawable))}})),l=e((function(e,t){function n(e){requestAnimationFrame(()=>{var t;const r=e.draggable.current;if(!r)return;(null===(t=e.animation.current)||void 0===t?void 0:t.plan.anims.has(r.orig))&&(e.animation.current=void 0);const i=e.pieces.get(r.orig);if(i&&o.samePiece(i,r.piece)){if(!r.started&&o.distanceSq(r.pos,r.origPos)>=Math.pow(e.draggable.distance,2)&&(r.started=!0),r.started){if("function"==typeof r.element){const e=r.element();if(!e)return;e.cgDragging=!0,e.classList.add("dragging"),r.element=e}const t=e.dom.bounds();o.translateAbs(r.element,[r.pos[0]-t.left-t.width/16,r.pos[1]-t.top-t.height/16])}}else s(e);n(e)})}function s(e){const t=e.draggable.current;t&&(t.newPiece&&e.pieces.delete(t.orig),e.draggable.current=void 0,r.unselect(e),i(e),e.dom.redraw())}function i(e){const t=e.dom.elements;t.ghost&&o.setVisible(t.ghost,!1)}function l(e,t){let o=e.dom.elements.board.firstChild;for(;o;){if(o.cgKey===t&&"PIECE"===o.tagName)return o;o=o.nextSibling}}Object.defineProperty(t,"__esModule",{value:!0}),t.cancel=t.end=t.move=t.dragNewPiece=t.start=void 0,t.start=function(e,t){if(void 0!==t.button&&0!==t.button)return;if(t.touches&&t.touches.length>1)return;const s=e.dom.bounds(),i=o.eventPosition(t),d=r.getKeyAtDomPos(i,r.whitePov(e),s);if(!d)return;const u=e.pieces.get(d),p=e.selected;p||!e.drawable.enabled||!e.drawable.eraseOnClick&&u&&u.color===e.turnColor||c.clear(e),!1===t.cancelable||t.touches&&e.movable.color&&!u&&!p&&!function(e,t){const n=r.whitePov(e),s=e.dom.bounds(),i=Math.pow(s.width/8,2);for(const r in e.pieces){const e=o.computeSquareCenter(r,n,s);if(o.distanceSq(e,t)<=i)return!0}return!1}(e,i)||t.preventDefault();const f=!!e.premovable.current,g=!!e.predroppable.current;e.stats.ctrlKey=t.ctrlKey,e.selected&&r.canMove(e,e.selected,d)?a.anim(e=>r.selectSquare(e,d),e):r.selectSquare(e,d);const v=e.selected===d,m=l(e,d);if(u&&m&&v&&r.isDraggable(e,d)){e.draggable.current={orig:d,piece:u,origPos:i,pos:i,started:e.draggable.autoDistance&&e.stats.dragged,element:m,previouslySelected:p,originTarget:t.target},m.cgDragging=!0,m.classList.add("dragging");const a=e.dom.elements.ghost;a&&(a.className=`ghost ${u.color} ${u.role}`,o.translateAbs(a,o.posToTranslateAbs(s)(o.key2pos(d),r.whitePov(e))),o.setVisible(a,!0)),n(e)}else f&&r.unsetPremove(e),g&&r.unsetPredrop(e);e.dom.redraw()},t.dragNewPiece=function(e,t,r,s){const i="a0";e.pieces.set(i,t),e.dom.redraw();const a=o.eventPosition(r);e.draggable.current={orig:i,piece:t,origPos:a,pos:a,started:!0,element:()=>l(e,i),originTarget:r.target,newPiece:!0,force:!!s},n(e)},t.move=function(e,t){e.draggable.current&&(!t.touches||t.touches.length<2)&&(e.draggable.current.pos=o.eventPosition(t))},t.end=function(e,t){const n=e.draggable.current;if(!n)return;if("touchend"===t.type&&!1!==t.cancelable&&t.preventDefault(),"touchend"===t.type&&n.originTarget!==t.target&&!n.newPiece)return void(e.draggable.current=void 0);r.unsetPremove(e),r.unsetPredrop(e);const s=o.eventPosition(t)||n.pos,a=r.getKeyAtDomPos(s,r.whitePov(e),e.dom.bounds());a&&n.started&&n.orig!==a?n.newPiece?r.dropNewPiece(e,n.orig,a,n.force):(e.stats.ctrlKey=t.ctrlKey,r.userMove(e,n.orig,a)&&(e.stats.dragged=!0)):n.newPiece?e.pieces.delete(n.orig):e.draggable.deleteOnDropOff&&!a&&(e.pieces.delete(n.orig),r.callUserFunction(e.events.change)),(n.orig!==n.previouslySelected||n.orig!==a&&a)&&e.selectable.enabled||r.unselect(e),i(e),e.draggable.current=void 0,e.dom.redraw()},t.cancel=s})),d=e((function(e,t){function o(e,t){e.exploding&&(t?e.exploding.stage=t:e.exploding=void 0,e.dom.redraw())}Object.defineProperty(t,"__esModule",{value:!0}),t.explosion=void 0,t.explosion=function(e,t){e.exploding={stage:1,keys:t},e.dom.redraw(),setTimeout(()=>{o(e,2),setTimeout(()=>o(e,void 0),120)},120)}})),u=e((function(e,t){Object.defineProperty(t,"__esModule",{value:!0}),t.start=void 0,t.start=function(e,t){function o(){r.toggleOrientation(e),t()}return{set(t){t.orientation&&t.orientation!==e.orientation&&o(),(t.fen?a.anim:a.render)(e=>i.configure(e,t),e)},state:e,getFen:()=>s.write(e.pieces),toggleOrientation:o,setPieces(t){a.anim(e=>r.setPieces(e,t),e)},selectSquare(t,o){t?a.anim(e=>r.selectSquare(e,t,o),e):e.selected&&(r.unselect(e),e.dom.redraw())},move(t,o){a.anim(e=>r.baseMove(e,t,o),e)},newPiece(t,o){a.anim(e=>r.baseNewPiece(e,t,o),e)},playPremove(){if(e.premovable.current){if(a.anim(r.playPremove,e))return!0;e.dom.redraw()}return!1},playPredrop(t){if(e.predroppable.current){const o=r.playPredrop(e,t);return e.dom.redraw(),o}return!1},cancelPremove(){a.render(r.unsetPremove,e)},cancelPredrop(){a.render(r.unsetPredrop,e)},cancelMove(){a.render(e=>{r.cancelMove(e),l.cancel(e)},e)},stop(){a.render(e=>{r.stop(e),l.cancel(e)},e)},explode(t){d.explosion(e,t)},setAutoShapes(t){a.render(e=>e.drawable.autoShapes=t,e)},setShapes(t){a.render(e=>e.drawable.shapes=t,e)},getKeyAtDomPos:t=>r.getKeyAtDomPos(t,r.whitePov(e),e.dom.bounds()),redrawAll:t,dragNewPiece(t,o,n){l.dragNewPiece(e,t,o,n)},destroy(){r.stop(e),e.dom.unbind&&e.dom.unbind(),e.dom.destroyed=!0}}}})),p=e((function(e,t){Object.defineProperty(t,"__esModule",{value:!0}),t.defaults=void 0,t.defaults=function(){return{pieces:s.read(s.initial),orientation:"white",turnColor:"white",coordinates:!0,autoCastle:!0,viewOnly:!1,disableContextMenu:!1,resizable:!0,addPieceZIndex:!1,pieceKey:!1,highlight:{lastMove:!0,check:!0},animation:{enabled:!0,duration:200},movable:{free:!0,color:"both",showDests:!0,events:{},rookCastle:!0},premovable:{enabled:!0,showDests:!0,castle:!0,events:{}},predroppable:{enabled:!1,events:{}},draggable:{enabled:!0,distance:3,autoDistance:!0,showGhost:!0,deleteOnDropOff:!1},dropmode:{active:!1},selectable:{enabled:!0},stats:{dragged:!("ontouchstart"in window)},events:{},drawable:{enabled:!0,visible:!0,defaultSnapToValidMove:!0,eraseOnClick:!0,shapes:[],autoShapes:[],brushes:{green:{key:"g",color:"#15781B",opacity:1,lineWidth:10},red:{key:"r",color:"#882020",opacity:1,lineWidth:10},blue:{key:"b",color:"#003088",opacity:1,lineWidth:10},yellow:{key:"y",color:"#e68f00",opacity:1,lineWidth:10},paleBlue:{key:"pb",color:"#003088",opacity:.4,lineWidth:15},paleGreen:{key:"pg",color:"#15781B",opacity:.4,lineWidth:15},paleRed:{key:"pr",color:"#882020",opacity:.4,lineWidth:15},paleGrey:{key:"pgr",color:"#4a4a4a",opacity:.35,lineWidth:15}},pieces:{baseUrl:"https://lichess1.org/assets/piece/cburnett/"},prevSvgHash:""},hold:o.timer()}}})),f=e((function(e,t){function n(e){return document.createElementNS("http://www.w3.org/2000/svg",e)}function r({orig:e,dest:t,brush:o,piece:n,modifiers:r},i,a,c){return[c.width,c.height,a,e,t,o,t&&(i.get(t)||0)>1,n&&s(n),r&&(l=r,""+(l.lineWidth||""))].filter(e=>e).join(",");var l}function s(e){return[e.color,e.role,e.scale].filter(e=>e).join(",")}function i(e,{shape:t,current:r,hash:s},i,a,g){let v;if(t.piece)v=function(e,t,o,r){const s=f(t,r),i=r.width/8*(o.scale||1),a=o.color[0]+("knight"===o.role?"n":o.role[0]).toUpperCase();return c(n("image"),{className:`${o.role} ${o.color}`,x:s[0]-i/2,y:s[1]-i/2,width:i,height:i,href:e+a+".svg"})}(e.drawable.pieces.baseUrl,l(o.key2pos(t.orig),e.orientation),t.piece,g);else{const s=l(o.key2pos(t.orig),e.orientation);if(t.dest){let m=i[t.brush];t.modifiers&&(m=d(m,t.modifiers)),v=function(e,t,o,r,s,i){const a=function(e,t){return(t?20:10)/512*e.width}(i,s&&!r),l=f(t,i),d=f(o,i),g=d[0]-l[0],v=d[1]-l[1],m=Math.atan2(v,g),h=Math.cos(m)*a,b=Math.sin(m)*a;return c(n("line"),{stroke:e.color,"stroke-width":u(e,r,i),"stroke-linecap":"round","marker-end":"url(#arrowhead-"+e.key+")",opacity:p(e,r),x1:l[0],y1:l[1],x2:d[0]-h,y2:d[1]-b})}(m,s,l(o.key2pos(t.dest),e.orientation),r,(a.get(t.dest)||0)>1,g)}else v=function(e,t,o,r){const s=f(t,r),i=function(e){const t=e.width/512;return[3*t,4*t]}(r),a=(r.width+r.height)/32;return c(n("circle"),{stroke:e.color,"stroke-width":i[o?0:1],fill:"none",opacity:p(e,o),cx:s[0],cy:s[1],r:a-i[1]/2})}(i[t.brush],s,r,g)}return v.setAttribute("cgHash",s),v}function a(e){const t=c(n("marker"),{id:"arrowhead-"+e.key,orient:"auto",markerWidth:4,markerHeight:8,refX:2.05,refY:2.01});return t.appendChild(c(n("path"),{d:"M0,0 V4 L3,2 Z",fill:e.color})),t.setAttribute("cgKey",e.key),t}function c(e,t){for(const o in t)e.setAttribute(o,t[o]);return e}function l(e,t){return"white"===t?e:[9-e[0]+1,10-e[1]+1]}function d(e,t){return{color:e.color,opacity:Math.round(10*e.opacity)/10,lineWidth:Math.round(t.lineWidth||e.lineWidth),key:[e.key,t.lineWidth].filter(e=>e).join("")}}function u(e,t,o){return(e.lineWidth||10)*(t?.85:1)/512*o.width}function p(e,t){return(e.opacity||1)*(t?.9:1)}function f(e,t){return[(e[0]-.5)*t.width/9,(10.5-e[1])*t.height/10]}Object.defineProperty(t,"__esModule",{value:!0}),t.renderSvg=t.createElement=void 0,t.createElement=n,t.renderSvg=function(e,t){const o=e.drawable,n=o.current,s=n&&n.mouseSq?n:void 0,c=new Map,l=e.dom.bounds();for(const r of o.shapes.concat(o.autoShapes).concat(s?[s]:[]))r.dest&&c.set(r.dest,(c.get(r.dest)||0)+1);const u=o.shapes.concat(o.autoShapes).map(e=>({shape:e,current:!1,hash:r(e,c,!1,l)}));s&&u.push({shape:s,current:!0,hash:r(s,c,!0,l)});const p=u.map(e=>e.hash).join(";");if(p===e.drawable.prevSvgHash)return;e.drawable.prevSvgHash=p;const f=t.firstChild;!function(e,t,o){const n=new Map;let r;for(const a of t)a.shape.dest&&(r=e.brushes[a.shape.brush],a.shape.modifiers&&(r=d(r,a.shape.modifiers)),n.set(r.key,r));const s=new Set;let i=o.firstChild;for(;i;)s.add(i.getAttribute("cgKey")),i=i.nextSibling;for(const[c,l]of n.entries())s.has(c)||o.appendChild(a(l))}(o,u,f),function(e,t,o,n,r,s){const a=e.dom.bounds(),c=new Map,l=[];for(const i of t)c.set(i.hash,!1);let d,u=s.nextSibling;for(;u;)d=u.getAttribute("cgHash"),c.has(d)?c.set(d,!0):l.push(u),u=u.nextSibling;for(const i of l)r.removeChild(i);for(const p of t)c.get(p.hash)||r.appendChild(i(e,p,o,n,a))}(e,u,o.brushes,c,t,f)}})),g=e((function(e,n){function r(e,t){const n=o.createEl("coords",t);let r;for(const s of e)r=o.createEl("coord"),r.textContent=s,n.appendChild(r);return n}Object.defineProperty(n,"__esModule",{value:!0}),n.renderWrap=void 0,n.renderWrap=function(e,n,s){e.innerHTML="",e.classList.add("cg-wrap");for(const o of t.colors)e.classList.toggle("orientation-"+o,n.orientation===o);e.classList.toggle("manipulable",!n.viewOnly);const i=o.createEl("cg-helper");e.appendChild(i);const a=o.createEl("cg-container");i.appendChild(a);const c=o.createEl("cg-board");let l,d;if(a.appendChild(c),n.drawable.visible&&!s&&(l=f.createElement("svg"),l.appendChild(f.createElement("defs")),a.appendChild(l)),n.coordinates){const e="black"===n.orientation?" black":"";a.appendChild(r(t.ranks,"ranks"+e)),a.appendChild(r(t.files,"files"+e))}return n.draggable.showGhost&&!s&&(d=o.createEl("piece","ghost"),o.setVisible(d,!1),a.appendChild(d)),{board:c,container:a,ghost:d,svg:l}}})),v=e((function(e,t){Object.defineProperty(t,"__esModule",{value:!0}),t.drop=t.cancelDropMode=t.setDropMode=void 0,t.setDropMode=function(e,t){e.dropmode={active:!0,piece:t},l.cancel(e)},t.cancelDropMode=function(e){e.dropmode={active:!1}},t.drop=function(e,t){if(!e.dropmode.active)return;r.unsetPremove(e),r.unsetPredrop(e);const n=e.dropmode.piece;if(n){e.pieces.set("a0",n);const s=o.eventPosition(t),i=s&&r.getKeyAtDomPos(s,r.whitePov(e),e.dom.bounds());i&&r.dropNewPiece(e,"a0",i)}e.dom.redraw()}})),m=e((function(e,t){function n(e,t,o,n){return e.addEventListener(t,o,n),()=>e.removeEventListener(t,o,n)}function r(e,t,o){return n=>{e.drawable.current?e.drawable.enabled&&o(e,n):e.viewOnly||t(e,n)}}Object.defineProperty(t,"__esModule",{value:!0}),t.bindDocument=t.bindBoard=void 0,t.bindBoard=function(e,t){const n=e.dom.elements.board;if(!e.dom.relative&&e.resizable&&"ResizeObserver"in window){new window.ResizeObserver(t).observe(n)}if(e.viewOnly)return;const r=function(e){return t=>{e.draggable.current?l.cancel(e):e.drawable.current?c.cancel(e):t.shiftKey||o.isRightButton(t)?e.drawable.enabled&&c.start(e,t):e.viewOnly||(e.dropmode.active?v.drop(e,t):l.start(e,t))}}(e);n.addEventListener("touchstart",r,{passive:!1}),n.addEventListener("mousedown",r,{passive:!1}),(e.disableContextMenu||e.drawable.enabled)&&n.addEventListener("contextmenu",e=>e.preventDefault())},t.bindDocument=function(e,t){const o=[];if(e.dom.relative||!e.resizable||"ResizeObserver"in window||o.push(n(document.body,"chessground.resize",t)),!e.viewOnly){const t=r(e,l.move,c.move),s=r(e,l.end,c.end);for(const e of["touchmove","mousemove"])o.push(n(document,e,t));for(const e of["touchend","mouseup"])o.push(n(document,e,s));const i=()=>e.dom.bounds.clear();o.push(n(document,"scroll",i,{capture:!0,passive:!0})),o.push(n(window,"resize",i,{passive:!0}))}return()=>o.forEach(e=>e())}})),h=e((function(e,t){Object.defineProperty(t,"__esModule",{value:!0}),t.updateBounds=t.render=void 0;const n=o;function s(e){return"PIECE"===e.tagName}function i(e){return"SQUARE"===e.tagName}function a(e,t){for(const o of t)e.dom.elements.board.removeChild(o)}function c(e,t){let o=2+8*e[1]+(7-e[0]);return t&&(o=67-o),o+""}function l(e){return`${e.color} ${e.role}`}function d(e,t,o){const n=e.get(t);n?e.set(t,`${n} ${o}`):e.set(t,o)}function u(e,t,o){const n=e.get(t);n?n.push(o):e.set(t,[o])}t.render=function(e){const t=r.whitePov(e),p=e.dom.relative?n.posToTranslateRel:n.posToTranslateAbs(e.dom.bounds()),f=e.dom.relative?n.translateRel:n.translateAbs,g=e.dom.elements.board,v=e.pieces,m=e.animation.current,h=m?m.plan.anims:new Map,b=m?m.plan.fadings:new Map,w=e.draggable.current,y=function(e){var t;const o=new Map;e.lastMove&&e.highlight.lastMove&&e.lastMove.forEach((e,t)=>{d(o,e,"last-move move"+t)});e.check&&e.highlight.check&&d(o,e.check,"check");if(e.selected&&(d(o,e.selected,"selected"),e.movable.showDests)){const n=null===(t=e.movable.dests)||void 0===t?void 0:t.get(e.selected);if(n)for(const t of n)d(o,t,"move-dest"+(e.pieces.has(t)?" oc":""));const r=e.premovable.dests;if(r)for(const t of r)d(o,t,"premove-dest"+(e.pieces.has(t)?" oc":""))}const n=e.premovable.current;if(n)for(const s of n)d(o,s,"current-premove");else e.predroppable.current&&d(o,e.predroppable.current.key,"current-premove");const r=e.exploding;if(r)for(const s of r.keys)d(o,s,"exploding"+r.stage);return o}(e),P=new Set,k=new Set,M=new Map,C=new Map;let S,A,O,K,x,D,_,T,q,E;for(A=g.firstChild;A;){if(S=A.cgKey,s(A))if(O=v.get(S),x=h.get(S),D=b.get(S),K=A.cgPiece,!A.cgDragging||w&&w.orig===S||(A.classList.remove("dragging"),f(A,p(o.key2pos(S),t)),A.cgDragging=!1),!D&&A.cgFading&&(A.cgFading=!1,A.classList.remove("fading")),O){if(x&&A.cgAnimating&&K===l(O)){const e=o.key2pos(S);e[0]+=x[2],e[1]+=x[3],A.classList.add("anim"),f(A,p(e,t))}else A.cgAnimating&&(A.cgAnimating=!1,A.classList.remove("anim"),f(A,p(o.key2pos(S),t)),e.addPieceZIndex&&(A.style.zIndex=c(o.key2pos(S),t)));K!==l(O)||D&&A.cgFading?D&&K===l(D)?(A.classList.add("fading"),A.cgFading=!0):u(M,K,A):P.add(S)}else u(M,K,A);else if(i(A)){const e=A.className;y.get(S)===e?k.add(S):u(C,e,A)}A=A.nextSibling}for(const[n,r]of y)if(!k.has(n)){q=C.get(r),E=q&&q.pop();const e=p(o.key2pos(n),t);if(E)E.cgKey=n,f(E,e);else{const t=o.createEl("square",r);t.cgKey=n,f(t,e),g.insertBefore(t,g.firstChild)}}for(const[n,r]of v)if(x=h.get(n),!P.has(n))if(_=M.get(l(r)),T=_&&_.pop(),T){T.cgKey=n,T.cgFading&&(T.classList.remove("fading"),T.cgFading=!1);const r=o.key2pos(n);e.addPieceZIndex&&(T.style.zIndex=c(r,t)),x&&(T.cgAnimating=!0,T.classList.add("anim"),r[0]+=x[2],r[1]+=x[3]),f(T,p(r,t))}else{const s=l(r),i=o.createEl("piece",s),a=o.key2pos(n);i.cgPiece=s,i.cgKey=n,x&&(i.cgAnimating=!0,a[0]+=x[2],a[1]+=x[3]),f(i,p(a,t)),e.addPieceZIndex&&(i.style.zIndex=c(a,t)),g.appendChild(i)}for(const o of M.values())a(e,o);for(const o of C.values())a(e,o)},t.updateBounds=function(e){if(e.dom.relative)return;const t=r.whitePov(e),a=n.posToTranslateAbs(e.dom.bounds());let c=e.dom.elements.board.firstChild;for(;c;)(s(c)&&!c.cgAnimating||i(c))&&n.translateAbs(c,a(o.key2pos(c.cgKey),t)),c=c.nextSibling}}));return e((function(e,t){function n(e){let t=!1;return()=>{t||(t=!0,requestAnimationFrame(()=>{e(),t=!1}))}}Object.defineProperty(t,"__esModule",{value:!0}),t.Chessground=void 0,t.Chessground=function(e,t){const r=p.defaults();function s(){const t="dom"in r?r.dom.unbind:void 0,s=r.viewOnly&&!r.drawable.visible,i=g.renderWrap(e,r,s),a=o.memo(()=>(console.log("elements.board.getBoundingClientRect()",i.board.getBoundingClientRect()),i.board.getBoundingClientRect())),c=e=>{h.render(d),!e&&i.svg&&f.renderSvg(d,i.svg)},l=()=>{a.clear(),h.updateBounds(d),i.svg&&f.renderSvg(d,i.svg)},d=r;return d.dom={elements:i,bounds:a,redraw:n(c),redrawNow:c,unbind:t,relative:s},d.drawable.prevSvgHash="",c(!1),m.bindBoard(d,l),t||(d.dom.unbind=m.bindDocument(d,l)),d.events.insert&&d.events.insert(i),d}return i.configure(r,t||{}),u.start(s(),s)}})).Chessground}();