import * as firingArc from './game/firing_arc.js';
import * as sightLine from './game/sight_line.js';
import * as soldier from './game/soldier.js';
import { Observable } from "./observable";
let svg, selected,
placing = [];
function getCellContents(cell) {
return cell.querySelectorAll('*:not(use[href="#hex"])');
}
function getGridIndex({ parentElement: { dataset: { x }, parentElement: { dataset: { y }}}}) {
return { x: +x, y: +y };
}
function getHex(cell) {
return cell.querySelector('use[href="#hex"]');
}
function getCellOccupant(cell) {
return cell.querySelector('.counter');
}
function getCells(svg) {
return svg.querySelectorAll('g.grid > g[data-y] > g[data-x]');
}
function getLockedSightLine(svg) {
return svg.querySelector('line.sight-line:not(.active)');
}
function getActiveSightLine(svg) {
return svg.querySelector('line.sight-line.active');
}
function isGrenade(el) {
return el && el.getAttribute('href') === '#counter-grenade';
}
function isClone(counter) {
const isClone = counter.classList.contains('clone'),
{ allegiance: clAl, number: clNum } = counter.dataset;
return {
of: function ({ dataset: { allegiance, number }}) {
return isClone && clAl == allegiance && clNum == number;
}
};
}
function getCellPosition(cell) {
let pt = new DOMPoint(0, 0),
transform = getComputedStyle(cell).transform.match(/-?\d+\.?\d*/g),
mtx = new DOMMatrix(transform);
pt = pt.matrixTransform(mtx);
transform = getComputedStyle(cell.parentElement).transform.match(/-?\d+\.?\d*/g);
mtx = new DOMMatrix(transform);
pt = pt.matrixTransform(mtx);
return pt;
}
function getCell(x, y) {
return svg.querySelector(`g.grid > g[data-y="${y}"] > g[data-x="${x}"]`);
}
function getCounterAtGridIndex(x, y) {
return getCell(x, y).querySelector('.counter');
}
function getSelected() {
return svg.querySelector(`.counter.selected[data-allegiance][data-number]`);
}
function deselect() {
const selected = getSelected();
placing = [];
Observable.notify('proneflag', false);
if (selected) {
selected.classList.remove(soldier.getSelectedClass());
clearSightLine();
firingArc.clipAll(svg);
}
}
function clearSightLine() {
sightLine.setHexes([]);
sightLine.clear();
Observable.notify('distance');
}
function updateSightLine(cell) {
const { dataset: { x: sX }, parentElement: { dataset: { y: sY }}} = cell,
{ dataset: { x: tX }, parentElement: { dataset: { y: tY }}} = sightLine.getLockTarget();
const selector = sightLine.calcIndexes(+sX, +sY, +tX, +tY)
.map(([x, y]) => `g.grid g[data-y="${y}"] g[data-x="${x}"] use[href="#hex"]`)
.join(', ');
const hexes = svg.querySelectorAll(selector);
sightLine.setHexes(hexes);
sightLine.update(getCellPosition(cell));
Observable.notify('distance', hexes.length - 1);
}
function drawSightLine(sourceCell, targetCell) {
const { dataset: { x: sX }, parentElement: { dataset: { y: sY }}} = sourceCell,
{ dataset: { x: tX }, parentElement: { dataset: { y: tY }}} = targetCell;
const selector = sightLine.calcIndexes(+sX, +sY, +tX, +tY)
.map(([x, y]) => `g.grid g[data-y="${y}"] g[data-x="${x}"] use[href="#hex"]`)
.join(', ');
const hexes = svg.querySelectorAll(selector);
sightLine.setHexes(hexes);
const line = sightLine.create(getCellPosition(sourceCell), getCellPosition(targetCell));
svg.querySelector('.gameboard').appendChild(line);
Observable.notify('distance', hexes.length - 1);
}
function moveBackOneStepInHistory(counter) {
const trace = soldier.getTrace(svg, counter);
counter.remove();
counter = getCounterAtGridIndex(...counter.dataset.previous.split(','));
counter.classList.remove('clone');
counter.classList.add(soldier.getSelectedClass());
if (!('previous' in counter.dataset)) {
trace.remove();
} else {
const points = trace.getAttribute('points').split(' ');
points.pop();
trace.setAttributeNS(null, 'points', points.join(' '));
}
return counter;
}
function clearMoveHistory(clone, counter) {
clone.classList.remove('clone');
clone.classList.add(soldier.getSelectedClass());
counter.remove();
counter = clone;
soldier.removeClones(svg, counter);
soldier.getTrace(svg, counter).remove();
return counter;
}
function deleteClone(occupant, counter, cell) {
const index = getGridIndex(occupant),
trace = soldier.getTrace(svg, counter),
pos = getCellPosition(cell),
points = trace.getAttribute('points').split(' ').filter(p => p != `${pos.x},${pos.y}`).join(' ');;
let current = counter;
trace.setAttributeNS(null, 'points', points);
while (current.dataset.previous != `${index.x},${index.y}`) {
current = getCounterAtGridIndex(...current.dataset.previous.split(','));
}
current.dataset.previous = occupant.dataset.previous;
occupant.remove();
}
function hasPreviousMoveInHistory(counter) {
return 'previous' in counter.dataset;
}
function selectOffBoard() {
Observable.notify('select', this);
}
function select(data) {
console.log('select', data);
const counter = data && (soldier.getCounter(svg, data) || soldier.createCounter(data));
const isSelected = counter?.classList.contains(soldier.getSelectedClass());
deselect();
if (isSelected || !data) return;
counter.classList.add(soldier.getSelectedClass());
firingArc.get(svg, counter).forEach(el => el.removeAttribute('clip-path'));
Observable.notify('proneflag', soldier.hasProne(counter));
placing.push(counter);
}
function endMove() {
const selected = getSelected();
if (selected) {
soldier.endMove(svg, selected);
deselect();
}
}
export function start(el) {
svg = el;
const startingLocations = svg.querySelector('.start-locations');
startingLocations && getUnits(startingLocations).forEach(unit => unit.addEventListener('click', selectOffBoard));
getCells(svg).forEach(cell => {
cell.addEventListener('click', e => {
const occupant = getCellOccupant(cell);
let toPlace = placing.pop();
if (isGrenade(toPlace)) {
getHex(cell).after(toPlace);
} else if (toPlace && !occupant) {
soldier.place(svg, toPlace, cell);
toPlace.removeEventListener('click', selectOffBoard);
placing.push(toPlace);
getLockedSightLine(svg) ? updateSightLine(cell) : clearSightLine();
} else if (toPlace && occupant) {
if (toPlace === occupant) {
if (hasPreviousMoveInHistory(toPlace)) {
toPlace = moveBackOneStepInHistory(toPlace);
placing.push(toPlace);
getLockedSightLine(svg) ? updateSightLine(toPlace.parentElement) : drawSightLine(toPlace.parentElement, cell);
} else {
// deselect();
Observable.notify('select');
}
} else if (!occupant.classList.contains('clone')) {
Observable.notify('select', occupant);
} else {
if (isClone(occupant).of(toPlace)) {
if (hasPreviousMoveInHistory(occupant)) {
deleteClone(occupant, toPlace, cell);
} else {
toPlace = clearMoveHistory(occupant, toPlace);
getLockedSightLine(svg) ? updateSightLine(cell) : clearSightLine();
}
}
placing.push(toPlace);
}
} else if (!toPlace && occupant) {
Observable.notify('select', occupant);
} else {
console.log('removing cell contents');
getCellContents(cell).forEach(el => el.remove());
}
const selected = getSelected();
Observable.notify('proneflag', selected && soldier.hasProne(selected));
});
cell.addEventListener('dblclick', e => {
const toPlace = placing.pop(),
occupant = getCellOccupant(cell);
if (toPlace && occupant && toPlace === occupant) {
const { number, allegiance } = toPlace.dataset,
selector = `[data-allegiance="${allegiance}"][data-number="${number}"]`;
svg.querySelectorAll(selector).forEach(el => el.remove());
Observable.notify('select');
}
});
cell.addEventListener('contextmenu', e => {
e.preventDefault();
sightLine.toggleLock(cell);
cell.dispatchEvent(new MouseEvent('pointerover'));
});
cell.addEventListener('pointerover', () => {
const selected = getSelected();
if (selected && svg.querySelector('.grid').contains(selected) && !getLockedSightLine(svg) && cell !== selected.parentElement) {
clearSightLine();
drawSightLine(selected.parentElement, cell);
}
let occupant = getCellOccupant(cell);
if (occupant) {
firingArc.toggleCounterVisibility(svg, occupant, true);
}
});
cell.addEventListener('pointerout', () => {
getActiveSightLine(svg) && clearSightLine();
let occupant = getCellOccupant(cell);
if (occupant) {
firingArc.toggleCounterVisibility(svg, occupant, false);
}
});
});
Observable.subscribe('select', select);
Observable.subscribe('endmove', endMove);
console.log('gameboard.js loaded');
}
export function stop() {
Observable.unsubscribe('select', select);
Observable.unsubscribe('endmove', endMove);
}
export function getUnits() {
return soldier.getAllCounters(svg);
}
export function clearFiringArcs(allegiance) {
firingArc.clear(svg, allegiance);
}
export function toggleProne() {
const selected = getSelected();
if (selected) soldier.toggleProne(selected);
}
export function toggleFiringArcVisibility() {
firingArc.toggleVisibility(svg, this.dataset.allegiance);
}
export function setFiringArc() {
const counter = getSelected(),
isOnBoard = counter => counter && counter.parentElement.hasAttribute('data-x');
if (isOnBoard(counter)) {
firingArc.set(svg, this.dataset.size, counter, getCellPosition(counter.parentElement));
}
}
export function setGrenade() {
let counter = document.createElementNS(svgns, 'use');
counter.setAttributeNS(null, 'href', '#counter-grenade');
placing.push(counter);
}