add "my location" block and a nominatim search block

2 files changed, 39 insertions, 0 deletions

diff --git a/objects.js b/objects.js
index 41ffe3c..91be855 100644
--- a/objects.js
+++ b/objects.js
@@ -213,6 +213,12 @@ SpriteMorph.prototype.initBlocks = function () {
             category: 'map',
             spec: 'my location'
         },
+        findLocation: {
+            type: 'reporter',
+            category: 'map',
+            spec: 'location of %s',
+            defaults: ['Tiergarten Berlin']
+        },
         focusMap: {
             type: 'command',
             category: 'map',
@@ -1770,6 +1776,8 @@ SpriteMorph.prototype.blockTemplates = function (category) {
 
     if (cat === 'map') {
         blocks.push(block('reportUserLocation'));
+        blocks.push(block('reportMyLocation'));
+        blocks.push(block('findLocation'));
         blocks.push(block('focusMap'));
         blocks.push(block('moveTo'));
 
@@ -3355,6 +3363,10 @@ SpriteMorph.prototype.moveTo = function (pos) {
     this.updateMarker();
 };
 
+SpriteMorph.prototype.reportMyLocation = function () {
+    return new List([this.geoposition.lat, this.geoposition.lng]);
+};
+
 // SpriteMorph motion primitives
 
 Morph.prototype.setPosition = function (aPoint, justMe) {
diff --git a/threads.js b/threads.js
index fab05a0..dfd19be 100644
--- a/threads.js
+++ b/threads.js
@@ -2638,6 +2638,33 @@ Process.prototype.addMarker = function (pos) {
     L.marker(pos.contents).addTo(window.map);
 };
 
+Process.prototype.findLocation = function (searchString) {
+    var myself = this;
+
+    if (!myself.context.jsonpScript) {
+        window.OSM_JSONP_Callback = function (data) {
+            myself.context.json = data;
+            window.OSM_JSONP_Callback = undefined;
+        };
+        myself.context.jsonpScript = document.createElement('script');
+        myself.context.jsonpScript.src =
+            'https://nominatim.openstreetmap.org/search'
+            + '?format=json&json_callback=OSM_JSONP_Callback'
+            + '&addressdetails=0&limit=1'
+            + '&q=' + myself.inputOption(searchString);
+        document.getElementsByTagName('HEAD')[0]
+            .appendChild(myself.context.jsonpScript);
+    } else {
+        if (myself.context.json) {
+            return new List([myself.context.json[0].lat,
+                    myself.context.json[0].lon]);
+        }
+    }
+
+    this.pushContext('doYield');
+    this.pushContext();
+}
+
 // Process Dates and times in Snap
 // Map block options to built-in functions
 var dateMap = {