Add tiles management

tiles/tilesets.go

@@ -0,0 +1,18 @@
+package tiles
+
+// Tileset stores tiles by TileID
+type Tileset map[string]*Tile
+
+func (tileset Tileset) GetTiledRoutes() []TiledRoute {
+	idmap := map[string]bool{}
+	result := []TiledRoute{}
+	for _, tile := range tileset {
+		for _, tr := range tile.TiledRoutes {
+			if _, ok := idmap[tr.Route.ExtraMembers.MustString("id")]; !ok {
+				idmap[tr.Route.ExtraMembers.MustString("id")] = true
+				result = append(result, tr)
+			}
+		}
+	}
+	return result
+}