From 6ae7393c8b73963ebc1e2901b775e7f619b93614 Mon Sep 17 00:00:00 2001
From: Kyler Chin <7539174+kylerchin@users.noreply.github.com>
Date: Sun, 8 Dec 2024 20:32:52 -0800
Subject: [PATCH] use multiple subdomains to speed up loading

---
 src/components/setup_load_map.ts | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/src/components/setup_load_map.ts b/src/components/setup_load_map.ts
index cea3473..084779d 100644
--- a/src/components/setup_load_map.ts
+++ b/src/components/setup_load_map.ts
@@ -114,31 +114,45 @@ export async function setup_load_map(
 
 		map.addSource('foamertiles', {
 			type: 'raster',
-			tiles: ['https://a.tiles.openrailwaymap.org/standard/{z}/{x}/{y}.png'],
+			tiles: ['https://a.tiles.openrailwaymap.org/standard/{z}/{x}/{y}.png',
+			 'https://b.tiles.openrailwaymap.org/standard/{z}/{x}/{y}.png',
+			 'https://c.tiles.openrailwaymap.org/standard/{z}/{x}/{y}.png'],
 			tileSize: 256
 		});
 
 		map.addSource('maxspeedtiles', {
 			type: 'raster',
-			tiles: ['https://a.tiles.openrailwaymap.org/maxspeed/{z}/{x}/{y}.png'],
+			tiles: ['https://a.tiles.openrailwaymap.org/maxspeed/{z}/{x}/{y}.png',
+			'https://b.tiles.openrailwaymap.org/maxspeed/{z}/{x}/{y}.png',
+			'https://c.tiles.openrailwaymap.org/maxspeed/{z}/{x}/{y}.png'
+			],
 			tileSize: 256
 		});
 
 		map.addSource('signallingtiles', {
 			type: 'raster',
-			tiles: ['https://a.tiles.openrailwaymap.org/signals/{z}/{x}/{y}.png'],
+			tiles: ['https://a.tiles.openrailwaymap.org/signals/{z}/{x}/{y}.png',
+			'https://b.tiles.openrailwaymap.org/signals/{z}/{x}/{y}.png',
+			'https://c.tiles.openrailwaymap.org/signals/{z}/{x}/{y}.png'
+			],
 			tileSize: 256
 		});
 
 		map.addSource('electrificationtiles', {
 			type: 'raster',
-			tiles: ['https://a.tiles.openrailwaymap.org/electrification/{z}/{x}/{y}.png'],
+			tiles: ['https://a.tiles.openrailwaymap.org/electrification/{z}/{x}/{y}.png',
+			'https://b.tiles.openrailwaymap.org/electrification/{z}/{x}/{y}.png',
+			'https://c.tiles.openrailwaymap.org/electrification/{z}/{x}/{y}.png'
+			],
 			tileSize: 256
 		});
 
 		map.addSource('gaugetiles', {
 			type: 'raster',
-			tiles: ['https://a.tiles.openrailwaymap.org/gauge/{z}/{x}/{y}.png'],
+			tiles: ['https://a.tiles.openrailwaymap.org/gauge/{z}/{x}/{y}.png',
+			'https://b.tiles.openrailwaymap.org/gauge/{z}/{x}/{y}.png',
+			'https://c.tiles.openrailwaymap.org/gauge/{z}/{x}/{y}.png'
+			],
 			tileSize: 256
 		});