tweak trains and trainlines displayed zoom (#412)

Co-authored-by: Pierre-Yves Rollo <dev@pyrollo.com>

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/lib/pq v1.10.9
 	github.com/minetest-go/areasparser v1.0.5
 	github.com/minetest-go/colormapping v1.0.5
-	github.com/minetest-go/mapparser v1.0.4
+	github.com/minetest-go/mapparser v0.1.9
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/prometheus/client_golang v1.19.1
 	github.com/sirupsen/logrus v1.9.3
@@ -28,7 +28,6 @@ require (
 	github.com/kr/text v0.2.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-sqlite3 v1.14.16 // indirect
-	github.com/minetest-go/types v1.0.7 // indirect
 	github.com/ncruces/go-strftime v0.1.9 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.5.0 // indirect
@@ -48,6 +47,6 @@ require (
 	modernc.org/token v1.1.0 // indirect
 )
 
-go 1.22.4
+go 1.22
 
-toolchain go1.23.0
+toolchain go1.22.4

go.sum

@@ -59,10 +59,6 @@ github.com/minetest-go/colormapping v1.0.5 h1:axZm0xbOz0RQEIFvZmbxr3kuvebYiG0AAA
 github.com/minetest-go/colormapping v1.0.5/go.mod h1:6UVusIQTqfWbcru5HTktWwB2BCNHUE3W0VkkRBaMfcw=
 github.com/minetest-go/mapparser v0.1.9 h1:mGjRwA2twJRyzSrYuJWvyNpEkO469K/Qun327v8rhwE=
 github.com/minetest-go/mapparser v0.1.9/go.mod h1:zE+JdqiicINR+kzZ4gS6BBh+vLVPQSwkYiEkG0A1Cys=
-github.com/minetest-go/mapparser v1.0.4 h1:JSO0JHWs6N0TB/C4cVuh58MrpO2tWV+6xdh7FYdl1hk=
-github.com/minetest-go/mapparser v1.0.4/go.mod h1:h0BJu8y5cBLOD+oe9YYyF2nRZdJlQ+cA6F8YmzZpHXM=
-github.com/minetest-go/types v1.0.7 h1:McQVnHQysqXegJbHnVl66TOS/172yi5b70sosWRCvuk=
-github.com/minetest-go/types v1.0.7/go.mod h1:QS2q8tKAiuBe2Rin880ARFt9VokYIJNZV4Z4kHAChU0=
 github.com/moby/term v0.5.0 h1:xt8Q1nalod/v7BqbG21f8mQPqH+xAaC9C3N3wfWbVP0=
 github.com/moby/term v0.5.0/go.mod h1:8FzsFHVUBGZdbDsJw/ot+X+d5HLUbvklYLJ9uGfcI3Y=
 github.com/morikuni/aec v1.0.0 h1:nP9CBfwrvYnBRgY6qfDQkygYDmYwOilePFkwzv4dU8A=

public/js/components/LayerSelector.js

@@ -7,9 +7,11 @@ function onchange(e){
   m.route.set("/map/:layerId/:zoom/:lon/:lat", params);
 }
 
-
 export default {
   view: function(){
+    // Display layer selector only if there is choice
+    if (LayerManager.layers.length <= 1)
+      return null;
 
     const layers = LayerManager.layers.map(layer => m(
       "option",

public/js/map/overlays/TrainOverlay.js

@@ -71,7 +71,7 @@ export default L.LayerGroup.extend({
 
 
   getMaxDisplayedZoom: function(){
-    return 10;
+    return 7;
   },
 
   createMarker: function(train){

public/js/map/overlays/TrainlineOverlay.js

@@ -59,6 +59,10 @@ export default AbstractGeoJsonOverlay.extend({
     });
   },
 
+  getMaxDisplayedZoom: function(){
+    return 4;
+  },
+  
   createGeoJson: function(objects){
     var self = this;