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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,96 +1,97 @@ | ||
| let selectedPiece = null; | ||
| let fromSquare = null; | ||
| let toSquare = null; | ||
| document.addEventListener("DOMContentLoaded", function() { | ||
| let selectedPiece = null; | ||
| let fromSquare = null; | ||
| let toSquare = null; | ||
|
|
||
| // Add listeners to all squares | ||
| document.querySelectorAll('[class*="chess-square-"]').forEach(square => { | ||
| // On click | ||
| square.addEventListener('click', function() { | ||
| if (!selectedPiece && squareHasPiece(this) ) { | ||
| // Select the piece | ||
| selectedPiece = this; | ||
| fromSquare = this; | ||
| this.classList.add('selected'); | ||
| } else if (selectedPiece) { | ||
| if (this === selectedPiece) { | ||
| // Deselect the piece | ||
| this.classList.remove('selected'); | ||
| // Add listeners to all squares | ||
| document.querySelectorAll('[class*="chess-square-"]').forEach(square => { | ||
| // On click | ||
| square.addEventListener('click', function() { | ||
| if (!selectedPiece && squareHasPiece(this) ) { | ||
| // Select the piece | ||
| selectedPiece = this; | ||
| fromSquare = this; | ||
| this.classList.add('selected'); | ||
| } else if (selectedPiece) { | ||
| if (this === selectedPiece) { | ||
| // Deselect the piece | ||
| this.classList.remove('selected'); | ||
| selectedPiece = null; | ||
| return; | ||
| } | ||
|
|
||
| toSquare = this; | ||
| // Move the piece to the new square | ||
| movePiece(selectedPiece, this); | ||
| selectedPiece.classList.remove('selected'); | ||
| selectedPiece = null; | ||
| return; | ||
| } | ||
| }); | ||
| }); | ||
|
|
||
| toSquare = this; | ||
| // Move the piece to the new square | ||
| movePiece(selectedPiece, this); | ||
| selectedPiece.classList.remove('selected'); | ||
| selectedPiece = null; | ||
| // TODO: make this work -- so that we can reset from bad moves | ||
| document.body.addEventListener('htmx:responseError', function(event) { | ||
| console.log(event); | ||
| // Check if the event is for the element you're interested in | ||
| if (event.target.id === 'submitMove') { | ||
| // Swap the pieces back | ||
| let fromSqaureHtml = fromSquare.innerHTML; | ||
| fromSquare.innerHTML = toSquare.innerHTML; | ||
| toSquare.innerHTML = fromSqaureHtml; | ||
| } | ||
| }); | ||
| }); | ||
|
|
||
| // TODO: make this work -- so that we can reset from bad moves | ||
| document.body.addEventListener('htmx:responseError', function(event) { | ||
| console.log(event); | ||
| // Check if the event is for the element you're interested in | ||
| if (event.target.id === 'submitMove') { | ||
| // Swap the pieces back | ||
| let fromSqaureHtml = fromSquare.innerHTML; | ||
| fromSquare.innerHTML = toSquare.innerHTML; | ||
| toSquare.innerHTML = fromSqaureHtml; | ||
| // (Overly) Simple function to check if a square has a piece | ||
| function squareHasPiece(square) { | ||
| return square.innerHTML !== ''; | ||
| } | ||
| }); | ||
|
|
||
| // (Overly) Simple function to check if a square has a piece | ||
| function squareHasPiece(square) { | ||
| return square.innerHTML !== ''; | ||
| } | ||
| // Logic for moving a piece | ||
| function movePiece(fromSquare, toSquare) { | ||
| // Get the identifying class name (e.g. `chess-piece-P` or `chess-piece-p`) of the piece | ||
| let fromPieceClass = fromSquare.classList[1]; | ||
| let fromPiece = fromPieceClass.split('-')[2]; | ||
|
|
||
| // Get the relevant squares | ||
| let fromPosition = fromSquare.getAttribute('id'); | ||
| let toPosition = toSquare.getAttribute('id'); | ||
| let toRank = toPosition[1]; | ||
|
|
||
| // Logic for moving a piece | ||
| function movePiece(fromSquare, toSquare) { | ||
| // Get the identifying class name (e.g. `chess-piece-P` or `chess-piece-p`) of the piece | ||
| let fromPieceClass = fromSquare.classList[1]; | ||
| let fromPiece = fromPieceClass.split('-')[2]; | ||
|
|
||
| // Get the relevant squares | ||
| let fromPosition = fromSquare.getAttribute('id'); | ||
| let toPosition = toSquare.getAttribute('id'); | ||
| let toRank = toPosition[1]; | ||
| // Determine the uci formatted move | ||
| let promotionHtml = null; | ||
| let promotionClass = null; | ||
| uciMove = `${fromPosition}${toPosition}`; | ||
| // Check if a pawn is being promoted | ||
| if ((fromPiece === 'P' && toRank === '8') || (fromPiece === 'p' && toRank === '1')) { | ||
| // TODO: allow user to select piece to promote to piece of their choice | ||
| uciMove += 'q'; // Promote to queen | ||
| if (fromPiece === 'P') { | ||
| promotionHtml = '♕'; | ||
| promotionClass = 'chess-piece-Q'; | ||
| } else { | ||
| promotionHtml = '♛'; | ||
| promotionClass = 'chess-piece-q'; | ||
| } | ||
| } | ||
|
|
||
| // Determine the uci formatted move | ||
| let promotionHtml = null; | ||
| let promotionClass = null; | ||
| uciMove = `${fromPosition}${toPosition}`; | ||
| // Check if a pawn is being promoted | ||
| if ((fromPiece === 'P' && toRank === '8') || (fromPiece === 'p' && toRank === '1')) { | ||
| // TODO: allow user to select piece to promote to piece of their choice | ||
| uciMove += 'q'; // Promote to queen | ||
| if (fromPiece === 'P') { | ||
| promotionHtml = '♕'; | ||
| promotionClass = 'chess-piece-Q'; | ||
| // Update the board | ||
| let toPieceHtml = promotionHtml ?? fromSquare.innerHTML; | ||
| let toPieceClass = promotionClass ?? fromPieceClass; | ||
| toSquare.innerHTML = toPieceHtml; // Add the piece to the new square | ||
| if (toSquare.classList.length === 1) { | ||
| toSquare.classList.add(toPieceClass); | ||
| } else { | ||
| promotionHtml = '♛'; | ||
| promotionClass = 'chess-piece-q'; | ||
| toSquare.classList.replace(toSquare.classList[1], toPieceClass); // Update the class of the new square | ||
| } | ||
| fromSquare.innerHTML = ''; // Remove the piece from the current square | ||
| sendMove(uciMove); | ||
| } | ||
|
|
||
| // Update the board | ||
| let toPieceHtml = promotionHtml ?? fromSquare.innerHTML; | ||
| let toPieceClass = promotionClass ?? fromPieceClass; | ||
| toSquare.innerHTML = toPieceHtml; // Add the piece to the new square | ||
| if (toSquare.classList.length === 1) { | ||
| toSquare.classList.add(toPieceClass); | ||
| } else { | ||
| toSquare.classList.replace(toSquare.classList[1], toPieceClass); // Update the class of the new square | ||
| function sendMove(uciMove) { | ||
| console.log(uciMove); | ||
| // Write our move to the hidden input field | ||
| document.getElementById('uciMoveInput').value = uciMove; | ||
| // Make the button visible | ||
| document.getElementById('moveForm').style.display = 'block'; | ||
| } | ||
| fromSquare.innerHTML = ''; // Remove the piece from the current square | ||
| sendMove(uciMove); | ||
| } | ||
|
|
||
| function sendMove(uciMove) { | ||
| console.log(uciMove); | ||
| // Write our move to the hidden input field | ||
| document.getElementById('uciMoveInput').value = uciMove; | ||
| // Make the button visible | ||
| document.getElementById('moveForm').style.display = 'block'; | ||
| } | ||
|
|
||
| }); |