1 // Game logic on a variant page
2 Vue
.component('my-game', {
6 vr: null, //object to check moves, store them, FEN..
8 possibleMoves: [], //filled after each valid click/dragstart
9 choices: [], //promotion pieces, or checkered captures... (as moves)
10 start: {}, //pixels coordinates + id of starting square (click or drag)
11 selectedPiece: null, //moving piece (or clicked piece)
12 conn: null, //socket connection
13 score: "*", //'*' means 'unfinished'
14 mode: "idle", //human, chat, friend, problem, computer or idle (if not playing)
15 myid: "", //our ID, always set
16 oppid: "", //opponent ID in case of HH game
17 gameId: "", //useful if opponent started other human games after we disconnected
18 myname: localStorage
["username"] || "anonymous",
19 oppName: "anonymous", //opponent name, revealed after a game (if provided)
20 chats: [], //chat messages after human game
26 hints: (!localStorage
["hints"] ? true : localStorage
["hints"] === "1"),
27 color: localStorage
["color"] || "lichess", //lichess, chesscom or chesstempo
28 // sound level: 0 = no sound, 1 = sound only on newgame, 2 = always
29 sound: parseInt(localStorage
["sound"] || "2"),
30 // Web worker to play computer moves without freezing interface:
31 compWorker: new Worker('/javascripts/playCompMove.js'),
32 timeStart: undefined, //time when computer starts thinking
36 problem: function(p
) {
37 // 'problem' prop changed: update board state
38 this.newGame("problem", p
.fen
, V
.ParseFen(p
.fen
).turn
);
42 const [sizeX
,sizeY
] = [V
.size
.x
,V
.size
.y
];
43 // Precompute hints squares to facilitate rendering
44 let hintSquares
= doubleArray(sizeX
, sizeY
, false);
45 this.possibleMoves
.forEach(m
=> { hintSquares
[m
.end
.x
][m
.end
.y
] = true; });
46 // Also precompute in-check squares
47 let incheckSq
= doubleArray(sizeX
, sizeY
, false);
48 this.incheck
.forEach(sq
=> { incheckSq
[sq
[0]][sq
[1]] = true; });
49 let elementArray
= [];
54 on: { click: this.clickGameSeek
},
55 attrs: { "aria-label": 'New online game' },
59 "bottom": true, //display below
61 "playing": this.mode
== "human",
65 [h('i', { 'class': { "material-icons": true } }, "accessibility")])
67 if (["idle","chat","computer"].includes(this.mode
))
72 on: { click: this.clickComputerGame
},
73 attrs: { "aria-label": 'New game VS computer' },
78 "playing": this.mode
== "computer",
82 [h('i', { 'class': { "material-icons": true } }, "computer")])
85 if (["idle","chat","friend"].includes(this.mode
))
90 on: { click: this.clickFriendGame
},
91 attrs: { "aria-label": 'New IRL game' },
96 "playing": this.mode
== "friend",
100 [h('i', { 'class': { "material-icons": true } }, "people")])
105 const square00
= document
.getElementById("sq-0-0");
106 const squareWidth
= !!square00
107 ? parseFloat(window
.getComputedStyle(square00
).width
.slice(0,-2))
109 const settingsBtnElt
= document
.getElementById("settingsBtn");
110 const settingsStyle
= !!settingsBtnElt
111 ? window
.getComputedStyle(settingsBtnElt
)
112 : {width:"46px", height:"26px"};
113 const [indicWidth
,indicHeight
] = //[44,24];
115 // NOTE: -2 for border
116 parseFloat(settingsStyle
.width
.slice(0,-2)) - 2,
117 parseFloat(settingsStyle
.height
.slice(0,-2)) - 2
119 let aboveBoardElts
= [];
120 if (["chat","human"].includes(this.mode
))
122 const connectedIndic
= h(
127 "connected": this.oppConnected
,
128 "disconnected": !this.oppConnected
,
131 "width": indicWidth
+ "px",
132 "height": indicHeight
+ "px",
136 aboveBoardElts
.push(connectedIndic
);
138 if (this.mode
== "chat")
140 const chatButton
= h(
143 on: { click: this.startChat
},
145 "aria-label": 'Start chat',
155 [h('i', { 'class': { "material-icons": true } }, "chat")]
157 aboveBoardElts
.push(chatButton
);
159 else if (this.mode
== "computer")
161 const clearButton
= h(
164 on: { click: this.clearComputerGame
},
166 "aria-label": 'Clear computer game',
176 [h('i', { 'class': { "material-icons": true } }, "clear")]
178 aboveBoardElts
.push(clearButton
);
185 "white-turn": this.vr
.turn
=="w",
186 "black-turn": this.vr
.turn
=="b",
189 "width": indicWidth
+ "px",
190 "height": indicHeight
+ "px",
194 aboveBoardElts
.push(turnIndic
);
195 const settingsBtn
= h(
198 on: { click: this.showSettings
},
200 "aria-label": 'Settings',
210 [h('i', { 'class': { "material-icons": true } }, "settings")]
212 aboveBoardElts
.push(settingsBtn
);
215 { "class": { "aboveboard-wrapper": true } },
219 if (this.mode
== "problem")
221 // Show problem instructions
225 attrs: { id: "instructions-div" },
228 "section-content": true,
234 attrs: { id: "problem-instructions" },
235 domProps: { innerHTML: this.problem
.instructions
}
242 const choices
= h('div',
244 attrs: { "id": "choices" },
245 'class': { 'row': true },
247 "display": this.choices
.length
>0?"block":"none",
248 "top": "-" + ((sizeY
/2)*squareWidth+squareWidth/2) + "px",
249 "width": (this.choices
.length
* squareWidth
) + "px",
250 "height": squareWidth
+ "px",
253 this.choices
.map( m
=> { //a "choice" is a move
258 ['board'+sizeY
]: true,
261 'width': (100/this.choices
.length
) + "%",
262 'padding-bottom': (100/this.choices
.length
) + "%",
267 attrs: { "src": '/images/pieces/' +
268 VariantRules
.getPpath(m
.appear
[0].c
+m
.appear
[0].p
) + '.svg' },
269 'class': { 'choice-piece': true },
271 "click": e
=> { this.play(m
); this.choices
=[]; },
272 // NOTE: add 'touchstart' event to fix a problem on smartphones
273 "touchstart": e
=> { this.play(m
); this.choices
=[]; },
280 // Create board element (+ reserves if needed by variant or mode)
281 const lm
= this.vr
.lastMove
;
282 const showLight
= this.hints
&&
283 (!["idle","chat"].includes(this.mode
) || this.cursor
==this.vr
.moves
.length
);
284 const gameDiv
= h('div',
291 [_
.range(sizeX
).map(i
=> {
292 let ci
= (this.mycolor
=='w' ? i : sizeX
-i
-1);
299 style: { 'opacity': this.choices
.length
>0?"0.5":"1" },
301 _
.range(sizeY
).map(j
=> {
302 let cj
= (this.mycolor
=='w' ? j : sizeY
-j
-1);
304 if (this.vr
.board
[ci
][cj
] != VariantRules
.EMPTY
)
312 'ghost': !!this.selectedPiece
313 && this.selectedPiece
.parentNode
.id
== "sq-"+ci
+"-"+cj
,
316 src: "/images/pieces/" +
317 VariantRules
.getPpath(this.vr
.board
[ci
][cj
]) + ".svg",
323 if (this.hints
&& hintSquares
[ci
][cj
])
333 src: "/images/mark.svg",
344 ['board'+sizeY
]: true,
345 'light-square': (i
+j
)%2==0,
346 'dark-square': (i
+j
)%2==1,
348 'highlight': showLight
&& !!lm
&& _
.isMatch(lm
.end
, {x:ci
,y:cj
}),
349 'incheck': showLight
&& incheckSq
[ci
][cj
],
352 id: this.getSquareId({x:ci
,y:cj
}),
361 if (!["idle","chat"].includes(this.mode
))
366 on: { click: this.resign
},
367 attrs: { "aria-label": 'Resign' },
374 [h('i', { 'class': { "material-icons": true } }, "flag")])
377 else if (this.vr
.moves
.length
> 0)
379 // A game finished, and another is not started yet: allow navigation
380 actionArray
= actionArray
.concat([
383 on: { click: e
=> this.undo() },
384 attrs: { "aria-label": 'Undo' },
390 [h('i', { 'class': { "material-icons": true } }, "fast_rewind")]),
393 on: { click: e
=> this.play() },
394 attrs: { "aria-label": 'Play' },
400 [h('i', { 'class': { "material-icons": true } }, "fast_forward")]),
404 if (["friend","problem"].includes(this.mode
))
406 actionArray
= actionArray
.concat(
410 on: { click: this.undoInGame
},
411 attrs: { "aria-label": 'Undo' },
417 [h('i', { 'class': { "material-icons": true } }, "undo")]
421 on: { click: () => { this.mycolor
= this.vr
.getOppCol(this.mycolor
) } },
422 attrs: { "aria-label": 'Flip' },
428 [h('i', { 'class': { "material-icons": true } }, "cached")]
432 elementArray
.push(gameDiv
);
433 if (!!this.vr
.reserve
)
435 const shiftIdx
= (this.mycolor
=="w" ? 0 : 1);
436 let myReservePiecesArray
= [];
437 for (let i
=0; i
<VariantRules
.RESERVE_PIECES
.length
; i
++)
439 myReservePiecesArray
.push(h('div',
441 'class': {'board':true, ['board'+sizeY
+'-reserve']:true},
442 attrs: { id: this.getSquareId({x:sizeX
+shiftIdx
,y:i
}) }
447 'class': {"piece":true, "reserve":true},
449 "src": "/images/pieces/" +
450 this.vr
.getReservePpath(this.mycolor
,i
) + ".svg",
454 {"class": { "reserve-count": true } },
455 [ this.vr
.reserve
[this.mycolor
][VariantRules
.RESERVE_PIECES
[i
]] ]
459 let oppReservePiecesArray
= [];
460 const oppCol
= this.vr
.getOppCol(this.mycolor
);
461 for (let i
=0; i
<VariantRules
.RESERVE_PIECES
.length
; i
++)
463 oppReservePiecesArray
.push(h('div',
465 'class': {'board':true, ['board'+sizeY
+'-reserve']:true},
466 attrs: { id: this.getSquareId({x:sizeX
+(1-shiftIdx
),y:i
}) }
471 'class': {"piece":true, "reserve":true},
473 "src": "/images/pieces/" +
474 this.vr
.getReservePpath(oppCol
,i
) + ".svg",
478 {"class": { "reserve-count": true } },
479 [ this.vr
.reserve
[oppCol
][VariantRules
.RESERVE_PIECES
[i
]] ]
483 let reserves
= h('div',
495 "reserve-row-1": true,
501 { 'class': { 'row': true }},
502 oppReservePiecesArray
506 elementArray
.push(reserves
);
511 attrs: { "id": "modal-eog", type: "checkbox" },
512 "class": { "modal": true },
516 attrs: { "role": "dialog", "aria-labelledby": "eogMessage" },
521 "class": { "card": true, "smallpad": true },
526 attrs: { "for": "modal-eog" },
527 "class": { "modal-close": true },
532 attrs: { "id": "eogMessage" },
533 "class": { "section": true },
534 domProps: { innerHTML: this.endgameMessage
},
542 elementArray
= elementArray
.concat(modalEog
);
544 const modalFenEdit
= [
547 attrs: { "id": "modal-fenedit", type: "checkbox" },
548 "class": { "modal": true },
552 attrs: { "role": "dialog", "aria-labelledby": "titleFenedit" },
557 "class": { "card": true, "smallpad": true },
562 attrs: { "id": "close-fenedit", "for": "modal-fenedit" },
563 "class": { "modal-close": true },
568 attrs: { "id": "titleFenedit" },
569 "class": { "section": true },
570 domProps: { innerHTML: "Position + flags (FEN):" },
578 value: VariantRules
.GenRandInitFen(),
586 const fen
= document
.getElementById("input-fen").value
;
587 document
.getElementById("modal-fenedit").checked
= false;
588 this.newGame("friend", fen
);
591 domProps: { innerHTML: "Ok" },
598 document
.getElementById("input-fen").value
=
599 VariantRules
.GenRandInitFen();
602 domProps: { innerHTML: "Random" },
610 elementArray
= elementArray
.concat(modalFenEdit
);
611 const modalSettings
= [
614 attrs: { "id": "modal-settings", type: "checkbox" },
615 "class": { "modal": true },
619 attrs: { "role": "dialog", "aria-labelledby": "settingsTitle" },
624 "class": { "card": true, "smallpad": true },
629 attrs: { "id": "close-settings", "for": "modal-settings" },
630 "class": { "modal-close": true },
635 attrs: { "id": "settingsTitle" },
636 "class": { "section": true },
637 domProps: { innerHTML: "Preferences" },
645 attrs: { for: "nameSetter" },
646 domProps: { innerHTML: "My name is..." },
656 on: { "change": this.setMyname
},
666 attrs: { for: "setHints" },
667 domProps: { innerHTML: "Show hints?" },
677 on: { "change": this.toggleHints
},
687 attrs: { for: "selectColor" },
688 domProps: { innerHTML: "Board colors" },
693 attrs: { "id": "selectColor" },
694 on: { "change": this.setColor
},
703 attrs: { "selected": this.color
=="lichess" },
712 attrs: { "selected": this.color
=="chesscom" },
718 "value": "chesstempo",
721 attrs: { "selected": this.color
=="chesstempo" },
733 attrs: { for: "selectSound" },
734 domProps: { innerHTML: "Play sounds?" },
739 attrs: { "id": "selectSound" },
740 on: { "change": this.setSound
},
749 attrs: { "selected": this.sound
==0 },
758 attrs: { "selected": this.sound
==1 },
767 attrs: { "selected": this.sound
==2 },
779 elementArray
= elementArray
.concat(modalSettings
);
784 attrs: { "id": "close-chat", "for": "modal-chat" },
785 "class": { "modal-close": true },
790 attrs: { "id": "titleChat" },
791 "class": { "section": true },
792 domProps: { innerHTML: "Chat with " + this.oppName
},
796 for (let chat
of this.chats
)
802 "my-chatmsg": chat
.author
==this.myid
,
803 "opp-chatmsg": chat
.author
==this.oppid
,
805 domProps: { innerHTML: chat
.msg
}
810 chatEltsArray
= chatEltsArray
.concat([
816 placeholder: "Type here",
818 on: { keyup: this.trySendChat
}, //if key is 'enter'
823 attrs: { id: "sendChatBtn"},
824 on: { click: this.sendChat
},
825 domProps: { innerHTML: "Send" },
832 attrs: { "id": "modal-chat", type: "checkbox" },
833 "class": { "modal": true },
837 attrs: { "role": "dialog", "aria-labelledby": "titleChat" },
842 "class": { "card": true, "smallpad": true },
849 elementArray
= elementArray
.concat(modalChat
);
850 const actions
= h('div',
852 attrs: { "id": "actions" },
853 'class': { 'text-center': true },
857 elementArray
.push(actions
);
858 if (this.score
!= "*" && this.pgnTxt
.length
> 0)
863 attrs: { id: "pgn-div" },
864 "class": { "section-content": true },
877 attrs: { id: "pgn-game" },
878 domProps: { innerHTML: this.pgnTxt
}
883 attrs: { "id": "downloadBtn" },
884 on: { click: this.download
},
885 domProps: { innerHTML: "Download game" },
892 else if (this.mode
!= "idle")
894 if (this.mode
== "problem")
896 // Show problem solution (on click)
900 attrs: { id: "solution-div" },
901 "class": { "section-content": true },
906 "class": { clickable: true },
907 domProps: { innerHTML: "Show solution" },
908 on: { click: this.toggleShowSolution
},
913 attrs: { id: "problem-solution" },
914 domProps: { innerHTML: this.problem
.solution
}
925 attrs: { id: "fen-div" },
926 "class": { "section-content": true },
931 attrs: { id: "fen-string" },
932 domProps: { innerHTML: this.vr
.getBaseFen() },
933 "class": { "text-center": true },
946 "col-md-offset-1":true,
948 "col-lg-offset-2":true,
950 // NOTE: click = mousedown + mouseup
952 mousedown: this.mousedown
,
953 mousemove: this.mousemove
,
954 mouseup: this.mouseup
,
955 touchstart: this.mousedown
,
956 touchmove: this.mousemove
,
957 touchend: this.mouseup
,
964 endgameMessage: function() {
965 let eogMessage
= "Unfinished";
969 eogMessage
= "White win";
972 eogMessage
= "Black win";
981 created: function() {
982 const url
= socketUrl
;
983 const humanContinuation
= (localStorage
.getItem("variant") === variant
);
984 const computerContinuation
= (localStorage
.getItem("comp-variant") === variant
);
985 this.myid
= (humanContinuation
? localStorage
.getItem("myid") : getRandString());
986 this.conn
= new WebSocket(url
+ "/?sid=" + this.myid
+ "&page=" + variant
);
987 const socketOpenListener
= () => {
988 if (humanContinuation
) //game VS human has priority
989 this.continueGame("human");
990 else if (computerContinuation
)
991 this.continueGame("computer");
993 const socketMessageListener
= msg
=> {
994 const data
= JSON
.parse(msg
.data
);
995 const L
= (!!this.vr
? this.vr
.moves
.length : 0);
999 // Receive opponent's name
1000 this.oppName
= data
.name
;
1004 this.chats
.push({msg:data
.msg
, author:this.oppid
});
1007 // We opened another tab on the same game
1010 alert("Already playing a game in this variant on another tab!");
1012 case "newgame": //opponent found
1013 // oppid: opponent socket ID
1014 this.newGame("human", data
.fen
, data
.color
, data
.oppid
);
1016 case "newmove": //..he played!
1017 this.play(data
.move, "animate");
1019 case "pong": //received if we sent a ping (game still alive on our side)
1020 if (this.gameId
!= data
.gameId
)
1021 break; //games IDs don't match: definitely over...
1022 this.oppConnected
= true;
1023 // Send our "last state" informations to opponent
1024 this.conn
.send(JSON
.stringify({
1027 gameId: this.gameId
,
1028 lastMove: (L
>0?this.vr
.moves
[L
-1]:undefined),
1032 case "lastate": //got opponent infos about last move
1033 if (this.gameId
!= data
.gameId
)
1034 break; //games IDs don't match: nothing we can do...
1035 // OK, opponent still in game (which might be over)
1036 if (this.mode
!= "human")
1038 // We finished the game (any result possible)
1039 this.conn
.send(JSON
.stringify({
1042 gameId: this.gameId
,
1046 else if (!!data
.score
) //opponent finished the game
1047 this.endGame(data
.score
);
1048 else if (data
.movesCount
< L
)
1050 // We must tell last move to opponent
1051 this.conn
.send(JSON
.stringify({
1054 lastMove: this.vr
.moves
[L
-1],
1058 else if (data
.movesCount
> L
) //just got last move from him
1059 this.play(data
.lastMove
, "animate");
1061 case "resign": //..you won!
1062 this.endGame(this.mycolor
=="w"?"1-0":"0-1");
1064 // TODO: also use (dis)connect info to count online players?
1067 if (["human","chat"].includes(this.mode
) && this.oppid
== data
.id
)
1068 this.oppConnected
= (data
.code
== "connect");
1069 if (this.oppConnected
&& this.mode
== "chat")
1071 // Send our name to the opponent, in case of he hasn't it
1072 this.conn
.send(JSON
.stringify({
1073 code:"myname", name:this.myname
, oppid: this.oppid
}));
1078 const socketCloseListener
= () => {
1079 this.conn
= new WebSocket(url
+ "/?sid=" + this.myid
+ "&page=" + variant
);
1080 this.conn
.addEventListener('open', socketOpenListener
);
1081 this.conn
.addEventListener('message', socketMessageListener
);
1082 this.conn
.addEventListener('close', socketCloseListener
);
1084 this.conn
.onopen
= socketOpenListener
;
1085 this.conn
.onmessage
= socketMessageListener
;
1086 this.conn
.onclose
= socketCloseListener
;
1087 // Listen to keyboard left/right to navigate in game
1088 document
.onkeydown
= event
=> {
1089 if (["idle","chat"].includes(this.mode
) &&
1090 !!this.vr
&& this.vr
.moves
.length
> 0 && [37,39].includes(event
.keyCode
))
1092 event
.preventDefault();
1093 if (event
.keyCode
== 37) //Back
1099 // Computer moves web worker logic:
1100 this.compWorker
.postMessage(["scripts",variant
]);
1102 this.compWorker
.onmessage = function(e
) {
1103 let compMove
= e
.data
;
1104 compMove
.computer
= true; //TODO: imperfect attempt to avoid ghost move
1105 // (first move) HACK: small delay to avoid selecting elements
1106 // before they appear on page:
1107 const delay
= Math
.max(500-(Date
.now()-self
.timeStart
), 0);
1109 if (self
.mode
== "computer") //warning: mode could have changed!
1110 self
.play(compMove
, "animate")
1115 setMyname: function(e
) {
1116 this.myname
= e
.target
.value
;
1117 localStorage
["username"] = this.myname
;
1119 trySendChat: function(e
) {
1120 if (e
.keyCode
== 13) //'enter' key
1123 sendChat: function() {
1124 let chatInput
= document
.getElementById("input-chat");
1125 const chatTxt
= chatInput
.value
;
1126 chatInput
.value
= "";
1127 this.chats
.push({msg:chatTxt
, author:this.myid
});
1128 this.conn
.send(JSON
.stringify({
1129 code:"newchat", oppid: this.oppid
, msg: chatTxt
}));
1131 toggleShowSolution: function() {
1132 let problemSolution
= document
.getElementById("problem-solution");
1133 problemSolution
.style
.display
=
1134 !problemSolution
.style
.display
|| problemSolution
.style
.display
== "none"
1138 download: function() {
1139 let content
= document
.getElementById("pgn-game").innerHTML
;
1140 content
= content
.replace(/<br>/g, "\n");
1141 // Prepare and trigger download link
1142 let downloadAnchor
= document
.getElementById("download");
1143 downloadAnchor
.setAttribute("download", "game.pgn");
1144 downloadAnchor
.href
= "data:text/plain;charset=utf-8," +
1145 encodeURIComponent(content
);
1146 downloadAnchor
.click();
1148 showScoreMsg: function() {
1149 let modalBox
= document
.getElementById("modal-eog");
1150 modalBox
.checked
= true;
1151 setTimeout(() => { modalBox
.checked
= false; }, 2000);
1153 endGame: function(score
) {
1155 if (["human","computer"].includes(this.mode
))
1157 const prefix
= (this.mode
=="computer" ? "comp-" : "");
1158 localStorage
.setItem(prefix
+"score", score
);
1160 this.showScoreMsg();
1161 // Variants may have special PGN structure (so next function isn't defined here)
1162 this.pgnTxt
= this.vr
.getPGN(this.mycolor
, this.score
, this.fenStart
, this.mode
);
1163 if (this.mode
== "human" && this.oppConnected
)
1165 // Send our nickname to opponent
1166 this.conn
.send(JSON
.stringify({
1167 code:"myname", name:this.myname
, oppid:this.oppid
}));
1169 this.mode
= (this.mode
=="human" ? "chat" : "idle");
1170 this.cursor
= this.vr
.moves
.length
; //to navigate in finished game
1172 setStorage: function() {
1173 if (this.mode
=="human")
1175 localStorage
.setItem("myid", this.myid
);
1176 localStorage
.setItem("oppid", this.oppid
);
1177 localStorage
.setItem("gameId", this.gameId
);
1179 // 'prefix' = "comp-" to resume games vs. computer
1180 const prefix
= (this.mode
=="computer" ? "comp-" : "");
1181 localStorage
.setItem(prefix
+"variant", variant
);
1182 localStorage
.setItem(prefix
+"mycolor", this.mycolor
);
1183 localStorage
.setItem(prefix
+"fenStart", this.fenStart
);
1184 localStorage
.setItem(prefix
+"moves", JSON
.stringify(this.vr
.moves
));
1185 localStorage
.setItem(prefix
+"fen", this.vr
.getFen());
1186 localStorage
.setItem(prefix
+"score", "*");
1188 updateStorage: function() {
1189 const prefix
= (this.mode
=="computer" ? "comp-" : "");
1190 localStorage
.setItem(prefix
+"moves", JSON
.stringify(this.vr
.moves
));
1191 localStorage
.setItem(prefix
+"fen", this.vr
.getFen());
1192 if (this.score
!= "*")
1193 localStorage
.setItem(prefix
+"score", this.score
);
1195 // "computer mode" clearing is done through the menu
1196 clearStorage: function() {
1197 if (["human","chat"].includes(this.mode
))
1199 delete localStorage
["myid"];
1200 delete localStorage
["oppid"];
1201 delete localStorage
["gameId"];
1203 const prefix
= (this.mode
=="computer" ? "comp-" : "");
1204 delete localStorage
[prefix
+"variant"];
1205 delete localStorage
[prefix
+"mycolor"];
1206 delete localStorage
[prefix
+"fenStart"];
1207 delete localStorage
[prefix
+"moves"];
1208 delete localStorage
[prefix
+"fen"];
1209 delete localStorage
[prefix
+"score"];
1211 // HACK because mini-css tooltips are persistent after click...
1212 getRidOfTooltip: function(elt
) {
1213 elt
.style
.visibility
= "hidden";
1214 setTimeout(() => { elt
.style
.visibility
="visible"; }, 100);
1216 startChat: function(e
) {
1217 this.getRidOfTooltip(e
.currentTarget
);
1218 document
.getElementById("modal-chat").checked
= true;
1220 clearComputerGame: function(e
) {
1221 this.getRidOfTooltip(e
.currentTarget
);
1222 this.clearStorage(); //this.mode=="computer" (already checked)
1223 location
.reload(); //to see clearing effects
1225 showSettings: function(e
) {
1226 this.getRidOfTooltip(e
.currentTarget
);
1227 document
.getElementById("modal-settings").checked
= true;
1229 toggleHints: function() {
1230 this.hints
= !this.hints
;
1231 localStorage
["hints"] = (this.hints
? "1" : "0");
1233 setColor: function(e
) {
1234 this.color
= e
.target
.options
[e
.target
.selectedIndex
].value
;
1235 localStorage
["color"] = this.color
;
1237 setSound: function(e
) {
1238 this.sound
= parseInt(e
.target
.options
[e
.target
.selectedIndex
].value
);
1239 localStorage
["sound"] = this.sound
;
1241 clickGameSeek: function(e
) {
1242 this.getRidOfTooltip(e
.currentTarget
);
1243 if (this.mode
== "human")
1244 return; //no newgame while playing
1247 this.conn
.send(JSON
.stringify({code:"cancelnewgame"}));
1251 this.newGame("human");
1253 clickComputerGame: function(e
) {
1254 this.getRidOfTooltip(e
.currentTarget
);
1255 this.newGame("computer");
1257 clickFriendGame: function(e
) {
1258 this.getRidOfTooltip(e
.currentTarget
);
1259 document
.getElementById("modal-fenedit").checked
= true;
1261 resign: function(e
) {
1262 this.getRidOfTooltip(e
.currentTarget
);
1263 if (this.mode
== "human" && this.oppConnected
)
1266 this.conn
.send(JSON
.stringify({code: "resign", oppid: this.oppid
}));
1267 } catch (INVALID_STATE_ERR
) {
1268 return; //socket is not ready (and not yet reconnected)
1271 this.endGame(this.mycolor
=="w"?"0-1":"1-0");
1273 newGame: function(mode
, fenInit
, color
, oppId
) {
1274 let fen
= fenInit
|| VariantRules
.GenRandInitFen();
1275 console
.log(fen
); //DEBUG
1276 if (mode
=="human" && !oppId
)
1278 const storageVariant
= localStorage
.getItem("variant");
1279 if (!!storageVariant
&& storageVariant
!== variant
)
1280 return alert("Finish your " + storageVariant
+ " game first!");
1281 // Send game request and wait..
1283 this.conn
.send(JSON
.stringify({code:"newgame", fen:fen
}));
1284 } catch (INVALID_STATE_ERR
) {
1285 return; //nothing achieved
1288 let modalBox
= document
.getElementById("modal-newgame");
1289 modalBox
.checked
= true;
1290 setTimeout(() => { modalBox
.checked
= false; }, 2000);
1293 if (["human","chat"].includes(this.mode
))
1295 // Start a new game vs. another human (or...) => forget about current one
1296 this.clearStorage();
1298 if (mode
== "computer")
1300 const storageVariant
= localStorage
.getItem("comp-variant");
1301 if (!!storageVariant
)
1303 const score
= localStorage
.getItem("comp-score");
1304 if (storageVariant
!== variant
&& score
== "*")
1306 if (!confirm("Unfinished " + storageVariant
+
1307 " computer game will be erased"))
1312 else if (score
== "*")
1313 return this.continueGame("computer");
1316 this.vr
= new VariantRules(fen
, []);
1318 this.pgnTxt
= ""; //redundant with this.score = "*", but cleaner
1321 this.fenStart
= V
.ParseFen(fen
).position
; //this is enough
1325 this.gameId
= getRandString();
1327 this.oppConnected
= true;
1328 this.mycolor
= color
;
1330 if (this.sound
>= 1)
1331 new Audio("/sounds/newgame.mp3").play().catch(err
=> {});
1332 document
.getElementById("modal-newgame").checked
= false;
1333 this.setStorage(); //in case of interruptions
1335 else if (mode
== "computer")
1337 this.compWorker
.postMessage(["init",this.vr
.getFen()]);
1338 this.mycolor
= (Math
.random() < 0.5 ? 'w' : 'b');
1339 this.setStorage(); //store game state
1340 if (this.mycolor
!= this.vr
.turn
)
1341 this.playComputerMove();
1343 //else: against a (IRL) friend or problem solving: nothing more to do
1345 continueGame: function(mode
) {
1347 this.oppid
= (mode
=="human" ? localStorage
.getItem("oppid") : undefined);
1348 const prefix
= (mode
=="computer" ? "comp-" : "");
1349 this.mycolor
= localStorage
.getItem(prefix
+"mycolor");
1350 const moves
= JSON
.parse(localStorage
.getItem(prefix
+"moves"));
1351 const fen
= localStorage
.getItem(prefix
+"fen");
1352 const score
= localStorage
.getItem(prefix
+"score"); //set in "endGame()"
1353 this.fenStart
= localStorage
.getItem(prefix
+"fenStart");
1354 if (mode
== "human")
1356 this.gameId
= localStorage
.getItem("gameId");
1357 // Send ping to server (answer pong if opponent is connected)
1358 this.conn
.send(JSON
.stringify({
1359 code:"ping",oppid:this.oppid
,gameId:this.gameId
}));
1362 this.compWorker
.postMessage(["init",fen
]);
1363 this.vr
= new VariantRules(fen
, moves
);
1364 if (moves
.length
> 0)
1366 const lastMove
= moves
[moves
.length
-1];
1367 this.vr
.undo(lastMove
);
1368 this.incheck
= this.vr
.getCheckSquares(lastMove
);
1369 this.vr
.play(lastMove
, "ingame");
1373 // Small delay required when continuation run faster than drawing page
1374 setTimeout(() => this.endGame(score
), 100);
1377 playComputerMove: function() {
1378 this.timeStart
= Date
.now();
1379 this.compWorker
.postMessage(["askmove"]);
1381 // Get the identifier of a HTML table cell from its numeric coordinates o.x,o.y.
1382 getSquareId: function(o
) {
1383 // NOTE: a separator is required to allow any size of board
1384 return "sq-" + o
.x
+ "-" + o
.y
;
1387 getSquareFromId: function(id
) {
1388 let idParts
= id
.split('-');
1389 return [parseInt(idParts
[1]), parseInt(idParts
[2])];
1391 mousedown: function(e
) {
1392 e
= e
|| window
.event
;
1394 let elem
= e
.target
;
1395 while (!ingame
&& elem
!== null)
1397 if (elem
.classList
.contains("game"))
1402 elem
= elem
.parentElement
;
1404 if (!ingame
) //let default behavior (click on button...)
1406 e
.preventDefault(); //disable native drag & drop
1407 if (!this.selectedPiece
&& e
.target
.classList
.contains("piece"))
1409 // Next few lines to center the piece on mouse cursor
1410 let rect
= e
.target
.parentNode
.getBoundingClientRect();
1412 x: rect
.x
+ rect
.width
/2,
1413 y: rect
.y
+ rect
.width
/2,
1414 id: e
.target
.parentNode
.id
1416 this.selectedPiece
= e
.target
.cloneNode();
1417 this.selectedPiece
.style
.position
= "absolute";
1418 this.selectedPiece
.style
.top
= 0;
1419 this.selectedPiece
.style
.display
= "inline-block";
1420 this.selectedPiece
.style
.zIndex
= 3000;
1421 const startSquare
= this.getSquareFromId(e
.target
.parentNode
.id
);
1422 this.possibleMoves
= [];
1423 if (!["idle","chat"].includes(this.mode
))
1425 const color
= ["friend","problem"].includes(this.mode
)
1428 if (this.vr
.canIplay(color
,startSquare
))
1429 this.possibleMoves
= this.vr
.getPossibleMovesFrom(startSquare
);
1431 // Next line add moving piece just after current image
1432 // (required for Crazyhouse reserve)
1433 e
.target
.parentNode
.insertBefore(this.selectedPiece
, e
.target
.nextSibling
);
1436 mousemove: function(e
) {
1437 if (!this.selectedPiece
)
1439 e
= e
|| window
.event
;
1440 // If there is an active element, move it around
1441 if (!!this.selectedPiece
)
1443 const [offsetX
,offsetY
] = !!e
.clientX
1444 ? [e
.clientX
,e
.clientY
] //desktop browser
1445 : [e
.changedTouches
[0].pageX
, e
.changedTouches
[0].pageY
]; //smartphone
1446 this.selectedPiece
.style
.left
= (offsetX
-this.start
.x
) + "px";
1447 this.selectedPiece
.style
.top
= (offsetY
-this.start
.y
) + "px";
1450 mouseup: function(e
) {
1451 if (!this.selectedPiece
)
1453 e
= e
|| window
.event
;
1454 // Read drop target (or parentElement, parentNode... if type == "img")
1455 this.selectedPiece
.style
.zIndex
= -3000; //HACK to find square from final coords
1456 const [offsetX
,offsetY
] = !!e
.clientX
1457 ? [e
.clientX
,e
.clientY
]
1458 : [e
.changedTouches
[0].pageX
, e
.changedTouches
[0].pageY
];
1459 let landing
= document
.elementFromPoint(offsetX
, offsetY
);
1460 this.selectedPiece
.style
.zIndex
= 3000;
1461 // Next condition: classList.contains(piece) fails because of marks
1462 while (landing
.tagName
== "IMG")
1463 landing
= landing
.parentNode
;
1464 if (this.start
.id
== landing
.id
)
1466 // A click: selectedPiece and possibleMoves are already filled
1469 // OK: process move attempt
1470 let endSquare
= this.getSquareFromId(landing
.id
);
1471 let moves
= this.findMatchingMoves(endSquare
);
1472 this.possibleMoves
= [];
1473 if (moves
.length
> 1)
1474 this.choices
= moves
;
1475 else if (moves
.length
==1)
1476 this.play(moves
[0]);
1477 // Else: impossible move
1478 this.selectedPiece
.parentNode
.removeChild(this.selectedPiece
);
1479 delete this.selectedPiece
;
1480 this.selectedPiece
= null;
1482 findMatchingMoves: function(endSquare
) {
1483 // Run through moves list and return the matching set (if promotions...)
1485 this.possibleMoves
.forEach(function(m
) {
1486 if (endSquare
[0] == m
.end
.x
&& endSquare
[1] == m
.end
.y
)
1491 animateMove: function(move) {
1492 let startSquare
= document
.getElementById(this.getSquareId(move.start
));
1493 let endSquare
= document
.getElementById(this.getSquareId(move.end
));
1494 let rectStart
= startSquare
.getBoundingClientRect();
1495 let rectEnd
= endSquare
.getBoundingClientRect();
1496 let translation
= {x:rectEnd
.x
-rectStart
.x
, y:rectEnd
.y
-rectStart
.y
};
1498 document
.querySelector("#" + this.getSquareId(move.start
) + " > img.piece");
1499 // HACK for animation (with positive translate, image slides "under background")
1500 // Possible improvement: just alter squares on the piece's way...
1501 squares
= document
.getElementsByClassName("board");
1502 for (let i
=0; i
<squares
.length
; i
++)
1504 let square
= squares
.item(i
);
1505 if (square
.id
!= this.getSquareId(move.start
))
1506 square
.style
.zIndex
= "-1";
1508 movingPiece
.style
.transform
= "translate(" + translation
.x
+ "px," +
1509 translation
.y
+ "px)";
1510 movingPiece
.style
.transitionDuration
= "0.2s";
1511 movingPiece
.style
.zIndex
= "3000";
1513 for (let i
=0; i
<squares
.length
; i
++)
1514 squares
.item(i
).style
.zIndex
= "auto";
1515 movingPiece
.style
= {}; //required e.g. for 0-0 with KR swap
1519 play: function(move, programmatic
) {
1522 // Navigate after game is over
1523 if (this.cursor
>= this.vr
.moves
.length
)
1524 return; //already at the end
1525 move = this.vr
.moves
[this.cursor
++];
1527 if (!!programmatic
) //computer or human opponent
1529 this.animateMove(move);
1532 // Not programmatic, or animation is over
1533 if (this.mode
== "human" && this.vr
.turn
== this.mycolor
)
1534 this.conn
.send(JSON
.stringify({code:"newmove", move:move, oppid:this.oppid
}));
1535 if (!["idle","chat"].includes(this.mode
))
1537 // Emergency check, if human game started "at the same time"
1538 // TODO: robustify this...
1539 if (this.mode
== "human" && !!move.computer
)
1541 this.incheck
= this.vr
.getCheckSquares(move); //is opponent in check?
1542 this.vr
.play(move, "ingame");
1543 if (this.sound
== 2)
1544 new Audio("/sounds/move.mp3").play().catch(err
=> {});
1545 if (this.mode
== "computer")
1547 // Send the move to web worker (TODO: including his own moves?!)
1548 this.compWorker
.postMessage(["newmove",move]);
1553 VariantRules
.PlayOnBoard(this.vr
.board
, move);
1554 this.$forceUpdate(); //TODO: ?!
1556 if (!["idle","chat"].includes(this.mode
))
1558 const eog
= this.vr
.checkGameOver();
1561 if (["human","computer"].includes(this.mode
))
1565 // Just show score on screen (allow undo)
1567 this.showScoreMsg();
1571 if (["human","computer"].includes(this.mode
))
1572 this.updateStorage(); //after our moves and opponent moves
1573 if (this.mode
== "computer" && this.vr
.turn
!= this.mycolor
&& this.score
== "*")
1574 this.playComputerMove();
1577 // Navigate after game is over
1578 if (this.cursor
== 0)
1579 return; //already at the beginning
1580 if (this.cursor
== this.vr
.moves
.length
)
1581 this.incheck
= []; //in case of...
1582 const move = this.vr
.moves
[--this.cursor
];
1583 VariantRules
.UndoOnBoard(this.vr
.board
, move);
1584 this.$forceUpdate(); //TODO: ?!
1586 undoInGame: function() {
1587 const lm
= this.vr
.lastMove
;
1591 if (this.sound
== 2)
1592 new Audio("/sounds/undo.mp3").play().catch(err
=> {});
1593 const lmBefore
= this.vr
.lastMove
;
1596 this.vr
.undo(lmBefore
);
1597 this.incheck
= this.vr
.getCheckSquares(lmBefore
);
1598 this.vr
.play(lmBefore
, "ingame");