From 8d243ce9192e574abd0b6e20a8a27ce00a3481d4 Mon Sep 17 00:00:00 2001
From: Jonathan Calvert <38069151+JDCalvert@users.noreply.github.com>
Date: Mon, 28 Feb 2022 18:13:12 +0000
Subject: [PATCH] Fix one-way wall collision detection (fixes #167) (#172)

---
 js/pathfinding.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/pathfinding.js b/js/pathfinding.js
index 2ff80a6..87a384d 100644
--- a/js/pathfinding.js
+++ b/js/pathfinding.js
@@ -42,7 +42,7 @@ export function findPath(from, to, token, previousWaypoints) {
 		let currentNode = lastNode;
 		while (currentNode) {
 			// TODO Check if the distance doesn't change
-			if (path.length >= 2 && !stepCollidesWithWall(currentNode.node, path[path.length - 2], token))
+			if (path.length >= 2 && !stepCollidesWithWall(path[path.length - 2], currentNode.node, token))
 				// Replace last waypoint if the current waypoint leads to a valid path
 				path[path.length - 1] = {x: currentNode.node.x, y: currentNode.node.y};
 			else
@@ -74,7 +74,7 @@ function getNode(pos, token, initialize=true) {
 			}
 
 			// TODO Work with pixels instead of grid locations
-			if (!stepCollidesWithWall(pos, neighborPos, token)) {
+			if (!stepCollidesWithWall(neighborPos, pos, token)) {
 				const isDiagonal = node.x !== neighborPos.x && node.y !== neighborPos.y && canvas.grid.type === CONST.GRID_TYPES.SQUARE;
 				let targetLayer = pos.layer;
 				if (use5105 && isDiagonal)