348 lines
10 KiB
JavaScript
348 lines
10 KiB
JavaScript
import * as firingArc from './game/firing_arc.js';
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import * as sightLine from './game/sight_line.js';
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import * as soldier from './game/soldier.js';
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let svg, distanceCallback, proneFlagCallback, selectCallback,
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selected,
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placing = [];
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function getCellContents(cell) {
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return cell.querySelectorAll('*:not(use[href="#hex"])');
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}
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function getGridIndex({ parentElement: { dataset: { x }, parentElement: { dataset: { y }}}}) {
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return { x: +x, y: +y };
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}
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function getHex(cell) {
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return cell.querySelector('use[href="#hex"]');
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}
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function getCellOccupant(cell) {
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return cell.querySelector('.counter');
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}
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function getCells(svg) {
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return svg.querySelectorAll('g.grid > g[data-y] > g[data-x]');
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}
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function getLockedSightLine(svg) {
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return svg.querySelector('line.sight-line:not(.active)');
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}
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function getSightLine() {
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return sightLine.getSightLine();
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}
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function getActiveSightLine(svg) {
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return svg.querySelector('line.sight-line.active');
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}
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function isGrenade(el) {
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return el && el.getAttribute('href') === '#counter-grenade';
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}
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function isClone(counter) {
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const isClone = counter.classList.contains('clone'),
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{ allegiance: clAl, number: clNum } = counter.dataset;
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return {
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of: function ({ dataset: { allegiance, number }}) {
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return isClone && clAl == allegiance && clNum == number;
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}
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};
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}
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function getCellPosition(cell) {
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let pt = new DOMPoint(0, 0),
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transform = getComputedStyle(cell).transform.match(/-?\d+\.?\d*/g),
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mtx = new DOMMatrix(transform);
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pt = pt.matrixTransform(mtx);
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transform = getComputedStyle(cell.parentElement).transform.match(/-?\d+\.?\d*/g);
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mtx = new DOMMatrix(transform);
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pt = pt.matrixTransform(mtx);
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return pt;
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}
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function getCell(x, y) {
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return svg.querySelector(`g.grid > g[data-y="${y}"] > g[data-x="${x}"]`);
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}
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function getCounterAtGridIndex(x, y) {
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return getCell(x, y).querySelector('.counter');
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}
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function getSelected() {
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return svg.querySelector(`.counter.selected[data-allegiance][data-number]`);
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}
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function clearSightLine() {
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sightLine.setHexes([]);
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sightLine.clear();
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distanceCallback && distanceCallback();
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}
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function updateSightLine(cell) {
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const { dataset: { x: sX }, parentElement: { dataset: { y: sY }}} = cell,
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{ dataset: { x: tX }, parentElement: { dataset: { y: tY }}} = sightLine.getLockTarget();
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const selector = sightLine.calcIndexes(+sX, +sY, +tX, +tY)
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.map(([x, y]) => `g.grid g[data-y="${y}"] g[data-x="${x}"] use[href="#hex"]`)
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.join(', ');
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const hexes = svg.querySelectorAll(selector);
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sightLine.setHexes(hexes);
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sightLine.update(getCellPosition(cell));
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distanceCallback && distanceCallback(hexes.length - 1);
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}
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function drawSightLine(sourceCell, targetCell) {
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const { dataset: { x: sX }, parentElement: { dataset: { y: sY }}} = sourceCell,
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{ dataset: { x: tX }, parentElement: { dataset: { y: tY }}} = targetCell;
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const selector = sightLine.calcIndexes(+sX, +sY, +tX, +tY)
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.map(([x, y]) => `g.grid g[data-y="${y}"] g[data-x="${x}"] use[href="#hex"]`)
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.join(', ');
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const hexes = svg.querySelectorAll(selector);
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sightLine.setHexes(hexes);
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const line = sightLine.create(getCellPosition(sourceCell), getCellPosition(targetCell));
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svg.querySelector('.gameboard').appendChild(line);
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distanceCallback && distanceCallback(hexes.length - 1);
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}
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export function getUnits() {
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return soldier.getAllCounters(svg);
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}
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export function setDistanceCallback(callback) {
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distanceCallback = callback;
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}
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export function setProneFlagCallback(callback) {
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proneFlagCallback = callback;
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}
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export function setSelectCallback(callback) {
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selectCallback = callback;
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}
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export function start(el) {
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svg = el;
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getCells(svg).forEach(cell => {
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cell.addEventListener('click', e => {
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const state = {
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placing: placing,
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hex: getHex(cell),
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occupant: getCellOccupant(cell),
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contents: getCellContents(cell)
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};
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let toPlace = placing.pop();
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if (isGrenade(toPlace)) {
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state.hex.after(toPlace);
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} else if (toPlace && !state.occupant) {
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soldier.place(svg, toPlace, cell);
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placing.push(toPlace);
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getLockedSightLine(svg) ? updateSightLine(cell) : clearSightLine();
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} else if (toPlace && state.occupant) {
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if (toPlace === state.occupant) {
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if ('previous' in toPlace.dataset) {
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const trace = soldier.getTrace(svg, toPlace);
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toPlace.remove();
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toPlace = getCounterAtGridIndex(...toPlace.dataset.previous.split(','));
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toPlace.classList.remove('clone');
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toPlace.classList.add(soldier.getSelectedClass());
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if (!('previous' in toPlace.dataset)) {
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trace.remove();
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} else {
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const points = trace.getAttribute('points').split(' ');
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points.pop();
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trace.setAttributeNS(null, 'points', points.join(' '));
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}
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placing.push(toPlace);
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const lockedSl = getLockedSightLine(svg);
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if (!lockedSl) {
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clearSightLine();
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} else {
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updateSightLine(toPlace.parentElement);
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}
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} else {
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unSelect();
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}
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} else if (!state.occupant.classList.contains('clone')) {
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select(state.occupant);
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} else {
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if (isClone(state.occupant).of(toPlace)) {
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if (!('previous' in state.occupant.dataset)) {
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state.occupant.classList.remove('clone');
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state.occupant.classList.add(soldier.getSelectedClass());
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toPlace.remove();
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toPlace = state.occupant;
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soldier.removeClones(svg, toPlace);
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soldier.getTrace(svg, toPlace).remove();
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getLockedSightLine(svg) ? updateSightLine(cell) : clearSightLine();
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} else {
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const index = getGridIndex(state.occupant),
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trace = soldier.getTrace(svg, toPlace),
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pos = getCellPosition(cell),
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points = trace.getAttribute('points').split(' ').filter(p => p != `${pos.x},${pos.y}`).join(' ');;
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let current = toPlace;
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trace.setAttributeNS(null, 'points', points);
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while (current.dataset.previous != `${index.x},${index.y}`) {
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current = getCounterAtGridIndex(...current.dataset.previous.split(','));
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}
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current.dataset.previous = state.occupant.dataset.previous;
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state.occupant.remove();
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}
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}
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placing.push(toPlace);
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}
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} else if (!toPlace && state.occupant) {
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select(state.occupant);
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} else {
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console.log('removing cell contents');
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state.contents.forEach(el => el.remove());
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}
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});
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cell.addEventListener('dblclick', e => {
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const toPlace = placing.pop(),
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occupant = getCellOccupant(cell);
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if (toPlace && occupant && toPlace == occupant) {
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const { number, allegiance } = toPlace.dataset,
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selector = `[data-allegiance="${allegiance}"][data-number="${number}"]`;
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svg.querySelectorAll(selector).forEach(el => el.remove());
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}
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});
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cell.addEventListener('contextmenu', e => {
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e.preventDefault();
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sightLine.toggleLock(cell);
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cell.dispatchEvent(new MouseEvent('pointerover'));
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});
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cell.addEventListener('pointerover', () => {
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// should we draw a sight line?
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// conditions:
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// we have a soldier selected
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// that soldier's counter is on the board
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// the sight line is not locked
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let selected = getSelected();
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if (selected) {
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let sl = getSightLine(),
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isOnBoard = selected.parentElement.hasAttribute('data-x'),
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sourceCell = selected.parentElement;
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if (isOnBoard && (!sl || sl.classList.contains('active')) && sourceCell != cell) {
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clearSightLine();
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drawSightLine(sourceCell, cell);
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}
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}
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let occupant = getCellOccupant(cell);
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if (occupant) {
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firingArc.toggleCounterVisibility(svg, occupant, true);
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}
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});
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cell.addEventListener('pointerout', () => {
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let sl = getActiveSightLine(svg);
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if (sl) {
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clearSightLine();
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}
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let occupant = getCellOccupant(cell);
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if (occupant) {
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firingArc.toggleCounterVisibility(svg, occupant, false);
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}
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});
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});
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// debug
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// const c = soldier.getCounter(svg, { dataset: { allegiance: 'davion', number: '1' }});
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// soldier.place(svg, c, getCell(17, 25));
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// select(c);
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}
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export function select(selected) {
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const counter = soldier.getCounter(svg, selected);
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if (counter) {
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unSelect();
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placing.push(counter);
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counter.classList.add(soldier.getSelectedClass());
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firingArc.get(svg, counter).forEach(el => el.removeAttribute('clip-path'));
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selectCallback && selectCallback({ prone: soldier.hasProne(counter), ...counter.dataset });
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}
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}
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export function unSelect() {
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const selected = getSelected();
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if (selected) {
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placing = [];
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getSelected().classList.remove(soldier.getSelectedClass());
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clearSightLine();
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firingArc.clipAll(svg);
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}
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}
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export function endMove() {
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const selected = getSelected();
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if (selected) {
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soldier.endMove(svg, selected);
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unSelect();
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}
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}
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export function endTurn(allegiance) {
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firingArc.clear(svg, allegiance);
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}
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export function toggleProne() {
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const selected = getSelected(),
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isOnBoard = selected && selected.parentElement.hasAttribute('data-x');
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if (selected && isOnBoard) {
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soldier.toggleProne(selected);
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}
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}
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export function toggleFiringArcVisibility() {
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firingArc.toggleVisibility(svg, this.dataset.allegiance);
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}
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export function setFiringArc() {
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const counter = getSelected(),
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isOnBoard = counter => counter && counter.parentElement.hasAttribute('data-x');
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if (isOnBoard(counter)) {
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firingArc.set(svg, this.dataset.size, counter, getCellPosition(counter.parentElement));
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}
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}
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export function setGrenade() {
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let counter = document.createElementNS(svgns, 'use');
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counter.setAttributeNS(null, 'href', '#counter-grenade');
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placing.push(counter);
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}
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