pace: handle GPS skew, allow reset of time/splits

apps/pace/ChangeLog

@@ -1,2 +1,3 @@
 0.01: New app!
 0.02: Show elapsed time on pause screen
+0.03: Avoid initial GPS skew and allow reset of time/splits

apps/pace/app.js

@@ -140,10 +140,12 @@
         var totalDist = dist.getValue();
         var thisSplit = totalDist - prev.dist;
         var thisTime = exs_1.state.duration - prev.time;
-        while (thisSplit > 1000) {
-            splits_1.push({ dist: thisSplit, time: thisTime });
-            thisTime = 0;
-            thisSplit -= 1000;
+        if (thisSplit > 1000) {
+            if (thisTime > 0) {
+                if (splits_1.length || thisTime > 1000 * 60)
+                    splits_1.push({ dist: thisSplit, time: thisTime });
+            }
+            thisSplit %= 1000;
         }
         exs_1.state.notify.dist.next -= thisSplit;
         S_1.writeJSON("pace.json", { splits: splits_1 });
@@ -172,6 +174,30 @@
     Bangle.on('twist', function () {
         Bangle.setBacklight(1);
     });
+    Bangle.on('tap', function (_e) {
+        if (exs_1.state.active)
+            return;
+        var menu = {
+            "": {
+                remove: function () {
+                    draw_1();
+                },
+            },
+            "< Back": function () {
+                Bangle.setUI();
+            },
+            "Zero time": function () {
+                exs_1.start();
+                exs_1.stop();
+                Bangle.setUI();
+            },
+            "Clear splits": function () {
+                splits_1.splice(0, splits_1.length);
+                Bangle.setUI();
+            },
+        };
+        E.showMenu(menu);
+    });
     Bangle.loadWidgets();
     Bangle.drawWidgets();
     g.clearRect(Bangle.appRect);

apps/pace/app.ts

@@ -184,10 +184,15 @@ exs.stats.dist.on("notify", (dist) => {
   let thisSplit = totalDist - prev.dist;
   let thisTime = exs.state.duration - prev.time;
 
-  while(thisSplit > 1000) {
-    splits.push({ dist: thisSplit as Dist, time: thisTime as Time });
-    thisTime = 0; // if we've jumped more than 1k, credit the time to the first split
-    thisSplit -= 1000;
+  if (thisSplit > 1000) {
+    if (thisTime > 0) {
+      // if we have splits, or time isn't ridiculous, store the split
+      // (otherwise we're initialising GPS and it's inaccurate)
+      if (splits.length || thisTime > 1000 * 60)
+        splits.push({ dist: thisSplit as Dist, time: thisTime as Time });
+    }
+
+    thisSplit %= 1000;
   }
 
   // subtract <how much we're over> off the next split notify
@@ -221,6 +226,32 @@ Bangle.on('twist', () => {
   Bangle.setBacklight(1);
 });
 
+Bangle.on('tap', _e => {
+  if(exs.state.active) return;
+
+  const menu: Menu = {
+    "": {
+      remove: () => {
+        draw();
+      },
+    },
+    "< Back": () => {
+      Bangle.setUI(); // calls `remove`, which handles redrawing
+    },
+    "Zero time": () => {
+      exs.start(); // calls reset
+      exs.stop(); // re-pauses
+      Bangle.setUI();
+    },
+    "Clear splits": () => {
+      splits.splice(0, splits.length);
+      Bangle.setUI();
+    },
+  };
+
+  E.showMenu(menu);
+});
+
 Bangle.loadWidgets();
 Bangle.drawWidgets();
 

apps/pace/metadata.json

@@ -1,7 +1,7 @@
 {
 	"id": "pace",
 	"name": "Pace",
-	"version": "0.02",
+	"version": "0.03",
 	"description": "Show pace and time running splits",
 	"icon": "app.png",
 	"tags": "run,running,fitness,outdoors",