140 lines
4.6 KiB
JavaScript
140 lines
4.6 KiB
JavaScript
document.addEventListener('DOMContentLoaded', () => {
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const MAX_SNAP_DISTANCE = 90;
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// Generate the board
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for (let i=0; i < 5; i++) {
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for (let j = 0; j < 5; j++) {
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const cell = document.createElement('div');
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cell.dataset.row = i;
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cell.dataset.col = j;
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cell.id = `cell-${i}-${j}`
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cell.dataset.piece = ""
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cell.classList.add('cell')
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if ((i + j) % 2 == 0) {
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cell.classList.add('dark')
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}
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else {
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cell.classList.add('light')
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}
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const board = document.getElementById('board')
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board.appendChild(cell)
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}
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}
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// Generate player token
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const player_token = document.createElement('div')
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const target_cell = document.getElementById('cell-4-0')
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player_token.id="player-token"
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player_token.classList.add('token')
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target_cell.appendChild(player_token)
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// Add logic for moving player token
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let isDragging = false;
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let offsetX, offsetY;
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// check for the player grabbing the player icon
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player_token.addEventListener('pointerdown', (e) => {
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const rect = player_token.getBoundingClientRect();
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player_token.style.width = `${rect.width}px`;
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player_token.style.height = `${rect.height}px`;
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isDragging = true;
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offsetX = e.offsetX;
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offsetY = e.offsetY;
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player_token.setPointerCapture(e.pointerId);
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});
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// Impliment the dragging
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player_token.addEventListener('pointermove', (e) => {
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if (!isDragging) return;
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player_token.style.position = 'absolute';
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player_token.style.left = `${e.pageX - offsetX}px`;
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player_token.style.top = `${e.pageY - offsetY}px`;
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});
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function resetToken(startingCell) {
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if (startingCell == null) {
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startingCell = document.getElementById('cell-4-0');
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}
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// Reset position inside cell
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player_token.style.position = 'relative'; // back to relative so it sits inside the cell
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player_token.style.left = '';
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player_token.style.top = '';
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player_token.style.zIndex = '';
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startingCell.appendChild(player_token);
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}
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function getClosestCellByDistance(x, y) {
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let closestCell = null;
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let minDistance = Infinity;
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const cells = document.querySelectorAll('.cell');
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cells.forEach(cell => {
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const rect = cell.getBoundingClientRect();
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const cellCenterX = rect.left + rect.width / 2;
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const cellCenterY = rect.top + rect.height / 2;
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const dx = x - cellCenterX;
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const dy = y - cellCenterY;
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const distance = Math.sqrt(dx*dx + dy*dy);
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if (distance < minDistance) {
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minDistance = distance;
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closestCell = cell;
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}
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});
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return { cell: closestCell, distance: minDistance };
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}
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function checkMoveValid(startingCell, endingCell) {
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const startRow = startingCell.dataset.row
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const startCol = startingCell.dataset.col
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const endRow = endingCell.dataset.row
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const endCol = endingCell.dataset.col
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const rowDiff = Math.abs(startRow - endRow)
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const colDiff = Math.abs(startCol - endCol)
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return ( (rowDiff == 1 && colDiff == 2) || (rowDiff == 2 && colDiff == 1) );
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}
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// stop dragging once they let go
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player_token.addEventListener('pointerup', (e) => {
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isDragging = false;
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// Find nearest cell
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const {cell: closestCell, distance} = getClosestCellByDistance(e.pageX, e.pageY);
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if (distance > MAX_SNAP_DISTANCE) {
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resetToken(player_token.parentElement);
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return;
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}
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const isValid = checkMoveValid(player_token.parentElement, closestCell);
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if (!isValid) {
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resetToken(player_token.parentElement)
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return;
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}
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// Reset token style and append to cell
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player_token.style.position = 'relative';
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player_token.style.left = '';
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player_token.style.top = '';
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player_token.style.zIndex = '';
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closestCell.appendChild(player_token);
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});
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// Generate Target Tokens
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target_token_list = ['0-0', '1-2', '2-4', '3-1', '4-3']
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for (let index = 0; index < target_token_list.length; index++) {
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const element = target_token_list[index];
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const token = document.createElement('div');
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token.classList.add('token')
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const target_cell = document.getElementById(`cell-${element}`)
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target_cell.appendChild(token)
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}
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}) |