Add support for gridless pathfinding
This commit is contained in:
Manuel Vögele
+258
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"use strict"
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import {getColorForDistanceAndToken, getMovedDistanceFromToken, getRangesFromSpeedProvider, initApi, registerModule, registerSystem} from "./api.js";
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import {checkDependencies, getHexSizeSupportTokenGridCenter} from "./compatibility.js";
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import {moveEntities, onMouseMove} from "./foundry_imports.js"
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import {disableSnap, registerKeybindings} from "./keybindings.js";
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import {libWrapper} from "./libwrapper_shim.js";
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import {performMigrations} from "./migration.js"
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import {removeLastHistoryEntryIfAt, resetMovementHistory} from "./movement_tracking.js";
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import {wipePathfindingCache} from "./pathfinding.js";
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import {extendRuler} from "./ruler.js";
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import {registerSettings, RightClickAction, settingsKey} from "./settings.js"
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import {recalculate} from "./socket.js";
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import {SpeedProvider} from "./speed_provider.js"
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import {setSnapParameterOnOptions} from "./util.js";
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import initGridlessPathfinding, * as GridlessPathfinding from "../wasm/gridless_pathfinding.js"
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CONFIG.debug.dragRuler = false;
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export let debugGraphics = undefined;
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initGridlessPathfinding().then(() => {
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Hooks.on("canvasInit", wipePathfindingCache);
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Hooks.on("canvasReady", wipePathfindingCache);
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Hooks.on("createWall", wipePathfindingCache);
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Hooks.on("updateWall", wipePathfindingCache);
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Hooks.on("deleteWall", wipePathfindingCache);
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});
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Hooks.once("init", () => {
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registerSettings()
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registerKeybindings()
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initApi()
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hookDragHandlers(Token);
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hookDragHandlers(MeasuredTemplate);
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libWrapper.register("drag-ruler", "TokenLayer.prototype.undoHistory", tokenLayerUndoHistory, "WRAPPER");
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extendRuler();
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window.dragRuler = {
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getColorForDistanceAndToken,
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getMovedDistanceFromToken,
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registerModule,
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registerSystem,
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recalculate,
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resetMovementHistory,
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}
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})
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Hooks.once("ready", () => {
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performMigrations()
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checkDependencies();
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Hooks.callAll("dragRuler.ready", SpeedProvider)
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if (CONFIG.debug.dragRuler)
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debugGraphics = canvas.controls.addChild(new PIXI.Container());
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})
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Hooks.on("canvasReady", () => {
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canvas.controls.rulers.children.forEach(ruler => {
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ruler.draggedEntity = null;
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Object.defineProperty(ruler, "isDragRuler", {
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get: function isDragRuler() {
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return Boolean(this.draggedEntity) && this._state !== Ruler.STATES.INACTIVE;
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}
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})
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})
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})
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Hooks.on("getCombatTrackerEntryContext", function (html, menu) {
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const entry = {
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name: "drag-ruler.resetMovementHistory",
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icon: '<i class="fas fa-undo-alt"></i>',
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callback: li => resetMovementHistory(ui.combat.viewed, li.data('combatant-id')),
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};
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menu.splice(1, 0, entry);
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});
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function forwardIfUnahndled(newFn) {
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return function(oldFn, ...args) {
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const eventHandled = newFn(...args);
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if (!eventHandled)
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oldFn(...args);
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};
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}
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function hookDragHandlers(entityType) {
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const entityName = entityType.name
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libWrapper.register("drag-ruler", `${entityName}.prototype._onDragLeftStart`, onEntityLeftDragStart, "WRAPPER");
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if (entityType === Token)
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libWrapper.register("drag-ruler", `${entityName}.prototype._onDragLeftMove`, onEntityLeftDragMoveSnap, "WRAPPER");
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else
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libWrapper.register("drag-ruler", `${entityName}.prototype._onDragLeftMove`, onEntityLeftDragMove, "WRAPPER");
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libWrapper.register("drag-ruler", `${entityName}.prototype._onDragLeftDrop`, forwardIfUnahndled(onEntityDragLeftDrop), "MIXED");
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libWrapper.register("drag-ruler", `${entityName}.prototype._onDragLeftCancel`, forwardIfUnahndled(onEntityDragLeftCancel), "MIXED");
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}
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async function tokenLayerUndoHistory(wrapped) {
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const historyEntry = this.history[this.history.length - 1];
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const returnValue = await wrapped();
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if (historyEntry.type === "update") {
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for (const entry of historyEntry.data) {
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const token = canvas.tokens.get(entry._id);
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removeLastHistoryEntryIfAt(token, entry.x, entry.y);
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}
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}
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return returnValue;
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}
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function onEntityLeftDragStart(wrapped, event) {
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wrapped(event);
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const isToken = this instanceof Token;
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const ruler = canvas.controls.ruler
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ruler.draggedEntity = this;
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let entityCenter;
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if (isToken && canvas.grid.isHex && game.modules.get("hex-size-support")?.active && CONFIG.hexSizeSupport.getAltSnappingFlag(this))
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entityCenter = getHexSizeSupportTokenGridCenter(this);
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else
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entityCenter = this.center;
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ruler.rulerOffset = {x: entityCenter.x - event.data.origin.x, y: entityCenter.y - event.data.origin.y};
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if (game.settings.get(settingsKey, "autoStartMeasurement")) {
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let options = {};
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setSnapParameterOnOptions(ruler, options);
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ruler.dragRulerStart(options, false);
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}
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}
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function onEntityLeftDragMoveSnap(wrapped, event) {
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applyGridlessSnapping.call(this, event);
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onEntityLeftDragMove.call(this, wrapped, event);
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}
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function onEntityLeftDragMove(wrapped, event) {
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wrapped(event);
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const ruler = canvas.controls.ruler
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if (ruler.isDragRuler)
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onMouseMove.call(ruler, event)
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}
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function onEntityDragLeftDrop(event) {
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const ruler = canvas.controls.ruler
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if (!ruler.isDragRuler) {
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ruler.draggedEntity = undefined;
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return false
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}
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// When we're dragging a measured template no token will ever be selected,
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// resulting in only the dragged template to be moved as would be expected
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const selectedTokens = canvas.tokens.controlled
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// This can happen if the user presses ESC during drag (maybe there are other ways too)
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if (selectedTokens.length === 0)
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selectedTokens.push(ruler.draggedEntity);
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// This can happen if the ruler is being dragged so rapidly that the drag move handler hasn't been called before dropping
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if (ruler._state === Ruler.STATES.STARTING)
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onMouseMove.call(ruler, event);
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ruler._state = Ruler.STATES.MOVING
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moveEntities.call(ruler, ruler.draggedEntity, selectedTokens);
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return true
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}
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function onEntityDragLeftCancel(event) {
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// This function is invoked by right clicking
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const ruler = canvas.controls.ruler
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if (!ruler.draggedEntity || ruler._state === Ruler.STATES.MOVING)
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return false
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const rightClickAction = game.settings.get(settingsKey, "rightClickAction");
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let options = {};
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setSnapParameterOnOptions(ruler, options);
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if (ruler._state === Ruler.STATES.INACTIVE) {
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if (rightClickAction !== RightClickAction.CREATE_WAYPOINT)
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return false;
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ruler.dragRulerStart(options);
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event.preventDefault();
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}
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else if (ruler._state === Ruler.STATES.MEASURING) {
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switch (rightClickAction) {
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case RightClickAction.CREATE_WAYPOINT:
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event.preventDefault();
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ruler.dragRulerAddWaypoint(ruler.destination, options);
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break;
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case RightClickAction.DELETE_WAYPOINT:
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ruler.dragRulerDeleteWaypoint(event, options);
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break;
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case RightClickAction.ABORT_DRAG:
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ruler.dragRulerAbortDrag();
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break;
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}
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}
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return true;
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}
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function applyGridlessSnapping(event) {
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const ruler = canvas.controls.ruler;
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if (!game.settings.get(settingsKey, "useGridlessRaster"))
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return;
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if (!ruler.isDragRuler)
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return;
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if (disableSnap)
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return;
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if (canvas.grid.type !== CONST.GRID_TYPES.GRIDLESS)
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return;
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const rasterWidth = 35 / canvas.stage.scale.x;
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const tokenX = event.data.destination.x;
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const tokenY = event.data.destination.y;
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const destination = {x: tokenX + ruler.rulerOffset.x, y: tokenY + ruler.rulerOffset.y};
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const ranges = getRangesFromSpeedProvider(ruler.draggedEntity);
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const terrainRulerAvailable = game.modules.get("terrain-ruler")?.active;
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if (terrainRulerAvailable) {
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const segments = Ruler.dragRulerGetRaysFromWaypoints(ruler.waypoints, destination).map(ray => {return {ray}});
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const pinpointDistances = new Map();
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for (const range of ranges) {
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pinpointDistances.set(range.range, null);
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}
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terrainRuler.measureDistances(segments, {pinpointDistances});
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const targetDistance = Array.from(pinpointDistances.entries())
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.filter(([_key, val]) => val)
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.reduce((value, current) => value[0] > current[0] ? value : current, [0, null]);
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const rasterLocation = targetDistance[1];
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if (rasterLocation) {
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const deltaX = destination.x - rasterLocation.x;
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const deltaY = destination.y - rasterLocation.y;
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const rasterDistance = Math.hypot(deltaX, deltaY);
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if (rasterDistance < rasterWidth) {
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event.data.destination.x = rasterLocation.x - ruler.rulerOffset.x;
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event.data.destination.y = rasterLocation.y - ruler.rulerOffset.y;
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}
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}
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}
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else {
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let waypointDistance = 0;
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let origin = event.data.origin;
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if (ruler.waypoints.length > 1) {
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const segments = Ruler.dragRulerGetRaysFromWaypoints(ruler.waypoints, destination).map(ray => {return {ray}});
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origin = segments.pop().ray.A;
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waypointDistance = canvas.grid.measureDistances(segments).reduce((a, b) => a + b);
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origin = {x: origin.x - ruler.rulerOffset.x, y: origin.y - ruler.rulerOffset.y};
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}
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const deltaX = tokenX - origin.x;
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const deltaY = tokenY - origin.y;
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const distance = Math.hypot(deltaX, deltaY);
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// targetRange will be the largest range that's still smaller than distance
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let targetDistance = ranges
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.map(range => range.range)
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.map(range => range - waypointDistance)
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.map(range => range * canvas.dimensions.size / canvas.dimensions.distance)
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.filter(range => range < distance)
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.reduce((a, b) => Math.max(a, b), 0);
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if (targetDistance) {
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if (distance < targetDistance + rasterWidth) {
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event.data.destination.x = origin.x + deltaX * targetDistance / distance;
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event.data.destination.y = origin.y + deltaY * targetDistance / distance;
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}
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}
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}
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}
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