Manuel Vögele
105 lines
3.6 KiB
JavaScript
105 lines
3.6 KiB
JavaScript
import {measureDistances} from "./compatibility.js";
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import {recalculate, updateCombatantDragRulerFlags} from "./socket.js";
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import {getTokenShape, isClose, zip} from "./util.js";
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function initTrackingFlag(combatant) {
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const initialFlag = {passedWaypoints: [], trackedRound: 0};
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let dragRulerFlag = combatant.data.flags.dragRuler;
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if (dragRulerFlag) {
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if (isNaN(dragRulerFlag.trackedRound)) {
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mergeObject(dragRulerFlag, initialFlag);
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}
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} else {
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combatant.data.flags.dragRuler = initialFlag;
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}
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}
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function getInitializedCombatant(token, combat) {
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const combatant = combat.getCombatantByToken(token.id);
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if (!combatant) return undefined;
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initTrackingFlag(combatant);
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return combatant;
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}
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export async function trackRays(tokens, tokenRays) {
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const combat = game.combat;
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if (!combat) return;
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if (!combat.started) return;
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if (!(tokens instanceof Array)) {
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tokens = [tokens];
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tokenRays = [tokenRays];
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}
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const updates = Array.from(zip(tokens, tokenRays))
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.map(([token, rays]) => calculateUpdate(combat, token, rays))
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.filter(Boolean);
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await updateCombatantDragRulerFlags(combat, updates);
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}
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function calculateUpdate(combat, token, rays) {
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const combatant = getInitializedCombatant(token, combat);
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if (!combatant) return;
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// Check if we have entered a new round. If so, remove the currently stored path
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if (combat.data.round > combatant.data.flags.dragRuler.trackedRound) {
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combatant.data.flags.dragRuler.passedWaypoints = [];
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combatant.data.flags.dragRuler.trackedRound = combat.data.round;
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}
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// Add the passed waypoints to the combatant
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const terrainRulerAvailable = game.modules.get("terrain-ruler")?.active;
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const dragRulerFlags = combatant.data.flags.dragRuler;
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const waypoints = dragRulerFlags.passedWaypoints;
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for (const ray of rays) {
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// Ignore rays that have the same start and end coordinates
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if (ray.A.x !== ray.B.x || ray.A.y !== ray.B.y) {
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if (terrainRulerAvailable) {
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measureDistances([{ray}], token, getTokenShape(token), {
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terrainRulerInitialState: waypoints[waypoints.length - 1]?.dragRulerFinalState,
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enableTerrainRuler: terrainRulerAvailable,
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});
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ray.A.dragRulerVisitedSpaces = ray.terrainRulerVisitedSpaces;
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ray.A.dragRulerFinalState = ray.terrainRulerFinalState;
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}
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waypoints.push(ray.A);
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}
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}
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return {_id: combatant.id, dragRulerFlags};
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}
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export function getMovementHistory(token) {
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const combat = game.combat;
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if (!combat) return [];
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const combatant = combat.getCombatantByToken(token.id);
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if (!combatant) return [];
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const dragRulerFlags = combatant.flags.dragRuler;
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if (!dragRulerFlags) return [];
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if (combat.round > dragRulerFlags.trackedRound) return [];
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return dragRulerFlags.passedWaypoints ?? [];
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}
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export async function removeLastHistoryEntryIfAt(token, x, y) {
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const history = getMovementHistory(token);
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if (history.length === 0) return;
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const entry = history[history.length - 1];
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if (!isClose(x + token.w / 2, entry.x, 0.1) || !isClose(y + token.h / 2, entry.y, 0.1)) {
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return;
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}
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history.pop();
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const combat = game.combat;
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const combatant = combat.getCombatantByToken(token.id);
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await updateCombatantDragRulerFlags(combat, [
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{_id: combatant.id, dragRulerFlags: combatant.data.flags.dragRuler},
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]);
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}
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export async function resetMovementHistory(combat, combatantId) {
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const combatant = combat.combatants.get(combatantId);
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const dragRulerFlags = combatant.data.flags.dragRuler;
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if (!dragRulerFlags) return;
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dragRulerFlags.passedWaypoints = null;
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dragRulerFlags.trackedRound = null;
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dragRulerFlags.rulerState = null;
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await updateCombatantDragRulerFlags(combat, [{_id: combatantId, dragRulerFlags}]);
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recalculate();
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}
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