From dd80098076cda9c103b44356ca07c2c8bc7698d7 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 14 Feb 2021 13:14:32 +0000
Subject: Join links in rail graph

---
 game/network/rail.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'game/network/rail.cpp')

diff --git a/game/network/rail.cpp b/game/network/rail.cpp
index fd2ea08..a66bf65 100644
--- a/game/network/rail.cpp
+++ b/game/network/rail.cpp
@@ -15,6 +15,23 @@
 RailLinks::RailLinks() : texture {Texture::cachedTexture.get("rails.jpg")} { }
 void RailLinks::tick(TickDuration) { }
 
+void
+RailLinks::joinLinks(LinkPtr l) const
+{
+	for (const auto & ol : links.objects) {
+		if (l != ol) {
+			for (const auto oe : {0, 1}) {
+				for (const auto te : {0, 1}) {
+					if (l->ends[te].first == ol->ends[oe].first) {
+						l->nexts[te].emplace_back(ol.get(), oe);
+						ol->nexts[oe].emplace_back(l.get(), te);
+					}
+				}
+			}
+		}
+	}
+}
+
 void
 RailLinks::render(const Shader & shader) const
 {
-- 
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