Debounce implemented

android/src/main/java/com/dumon/plugin/geolocation/DumonGeolocation.kt

@@ -4,6 +4,7 @@ import android.Manifest
 import android.content.pm.PackageManager
 import android.graphics.Color
 import android.os.Build
+import android.util.Log
 import android.view.View
 import android.view.WindowInsetsController
 import android.view.WindowManager
@@ -69,6 +70,7 @@ class DumonGeolocation : Plugin() {
 
     //    private val emitIntervalMs: Long = 500L
     private val emitIntervalMs: Long = 1000L // hard debounce
+//    private val emitIntervalMs: Long = 500L
 
     override fun load() {
         gpsManager = GpsStatusManager(
@@ -91,6 +93,7 @@ class DumonGeolocation : Plugin() {
             onImuUpdate = {
                 latestImu = it
                 emitPositionUpdate()
+                fusionManager?.updateMotionEstimate(it.speed.toDouble(), it.directionRad.toDouble())
             }
         )
 
@@ -265,6 +268,19 @@ class DumonGeolocation : Plugin() {
 
             notifyListeners("onPositionUpdate", buildPositionData())
         }
+
+        // Fallback prediksi jika tidak ada GNSS update > 1.5 detik
+        if (System.currentTimeMillis() - latestTimestamp > 1500 && latestImu != null) {
+            val (predLat, predLon) = fusionManager?.predictForwardPosition(1.0) ?: return
+            latestLatitude = predLat
+            latestLongitude = predLon
+            latestAccuracy = 10.0
+            latestSource = "PREDICTED"
+            latestTimestamp = System.currentTimeMillis()
+
+            Log.d("DUMON_PREDICTION", "Predicted position: $predLat, $predLon")
+            notifyListeners("onPositionUpdate", buildPositionData())
+        }
     }
 
     private fun degToRad(deg: Double): Double {
@@ -300,6 +316,8 @@ class DumonGeolocation : Plugin() {
             obj.put("directionRad", it.directionRad)
         }
 
+        obj.put("predicted", latestSource == "PREDICTED")
+
         // === Full Detail (commented out for future use) ===
         /*
         satelliteStatus?.let {

android/src/main/java/com/dumon/plugin/geolocation/fusion/SensorFusionManager.kt

@@ -18,6 +18,9 @@ class SensorFusionManager(
     private var isFirstUpdate = true
     private var lastUpdateTimestamp: Long = 0L
 
+    private var lastSpeed = 0.0
+    private var lastHeadingRad = 0.0
+
     fun updateGpsPosition(lat: Double, lon: Double) {
         val currentTimestamp = System.currentTimeMillis()
         val dtSeconds = if (lastUpdateTimestamp > 0) {
@@ -50,6 +53,24 @@ class SensorFusionManager(
         onFusedPositionUpdate(latEstimate, lonEstimate)
     }
 
+    fun updateMotionEstimate(speed: Double, headingRad: Double) {
+        lastSpeed = speed
+        lastHeadingRad = headingRad
+    }
+
+    fun predictForwardPosition(secondsAhead: Double): Pair<Double, Double> {
+        val distance = lastSpeed * secondsAhead
+        val R = 6371000.0
+
+        val deltaLat = (distance * cos(lastHeadingRad)) / R
+        val deltaLon = (distance * sin(lastHeadingRad)) / (R * cos(Math.toRadians(latEstimate)))
+
+        val predictedLat = latEstimate + Math.toDegrees(deltaLat)
+        val predictedLon = lonEstimate + Math.toDegrees(deltaLon)
+
+        return Pair(predictedLat, predictedLon)
+    }
+
     fun reset() {
         latEstimate = 0.0
         lonEstimate = 0.0

dist/docs.json

@@ -162,6 +162,13 @@
           "docs": "",
           "complexTypes": [],
           "type": "boolean"
+        },
+        {
+          "name": "predicted",
+          "tags": [],
+          "docs": "",
+          "complexTypes": [],
+          "type": "boolean | undefined"
         }
       ]
     },

dist/esm/definitions.d.ts

@@ -9,6 +9,7 @@ export interface PositioningData {
     acceleration: number;
     directionRad: number;
     isMocked: boolean;
+    predicted?: boolean;
 }
 export interface PermissionStatus {
     location: 'granted' | 'denied';

dist/esm/definitions.js.map

@@ -1 +1 @@
-{"version":3,"file":"definitions.js","sourceRoot":"","sources":["../../src/definitions.ts"],"names":[],"mappings":"","sourcesContent":["import type { PluginListenerHandle } from '@capacitor/core';\n\n// export interface SatelliteStatus {\n//   satellitesInView: number;\n//   usedInFix: number;\n//   constellationCounts: { [key: string]: number };\n// }\n\n// export interface WifiAp {\n//   ssid: string;\n//   bssid: string;\n//   rssi: number;\n//   distance?: number;\n// }\n\n// export interface WifiScanResult {\n//   apCount: number;\n//   aps: WifiAp[];\n// }\n\n// export interface ImuData {\n//   accelX: number;\n//   accelY: number;\n//   accelZ: number;\n//   gyroX: number;\n//   gyroY: number;\n//   gyroZ: number;\n//   speed?: number;\n//   acceleration?: number;\n//   directionRad?: number;\n// }\n\n// export interface GpsData {\n//   latitude: number;\n//   longitude: number;\n//   accuracy: number;\n//   satellitesInView?: number;\n//   usedInFix?: number;\n//   constellationCounts?: { [key: string]: number };\n// }\n\n// export interface PositioningData {\n//   source: 'GNSS' | 'WIFI' | 'FUSED' | 'MOCK';\n//   timestamp: number;\n//   latitude: number;\n//   longitude: number;\n//   accuracy: number;\n\n//   gnssData?: SatelliteStatus;\n//   wifiData?: WifiAp[];\n//   imuData?: ImuData;\n// }\n\nexport interface PositioningData {\n  source: 'GNSS' | 'WIFI' | 'FUSED' | 'MOCK';\n  timestamp: number;\n  latitude: number;\n  longitude: number;\n  accuracy: number;\n  speed: number;\n  acceleration: number;\n  directionRad: number;\n  isMocked: boolean;\n}\n\nexport interface PermissionStatus {\n  location: 'granted' | 'denied';\n  wifi: 'granted' | 'denied';\n}\n\nexport interface DumonGeolocationPlugin {\n  startPositioning(): Promise<void>;\n  stopPositioning(): Promise<void>;\n  getLatestPosition(): Promise<PositioningData>;\n  checkAndRequestPermissions(): Promise<PermissionStatus>;\n\n  configureEdgeToEdge(options: {\n    bgColor: string;\n    style: 'DARK' | 'LIGHT';\n    overlay?: boolean;\n  }): Promise<void>;\n\n  addListener(\n    eventName: 'onPositionUpdate',\n    listenerFunc: (data: PositioningData) => void\n  ): PluginListenerHandle;\n}"]}
+{"version":3,"file":"definitions.js","sourceRoot":"","sources":["../../src/definitions.ts"],"names":[],"mappings":"","sourcesContent":["import type { PluginListenerHandle } from '@capacitor/core';\n\n// export interface SatelliteStatus {\n//   satellitesInView: number;\n//   usedInFix: number;\n//   constellationCounts: { [key: string]: number };\n// }\n\n// export interface WifiAp {\n//   ssid: string;\n//   bssid: string;\n//   rssi: number;\n//   distance?: number;\n// }\n\n// export interface WifiScanResult {\n//   apCount: number;\n//   aps: WifiAp[];\n// }\n\n// export interface ImuData {\n//   accelX: number;\n//   accelY: number;\n//   accelZ: number;\n//   gyroX: number;\n//   gyroY: number;\n//   gyroZ: number;\n//   speed?: number;\n//   acceleration?: number;\n//   directionRad?: number;\n// }\n\n// export interface GpsData {\n//   latitude: number;\n//   longitude: number;\n//   accuracy: number;\n//   satellitesInView?: number;\n//   usedInFix?: number;\n//   constellationCounts?: { [key: string]: number };\n// }\n\n// export interface PositioningData {\n//   source: 'GNSS' | 'WIFI' | 'FUSED' | 'MOCK';\n//   timestamp: number;\n//   latitude: number;\n//   longitude: number;\n//   accuracy: number;\n\n//   gnssData?: SatelliteStatus;\n//   wifiData?: WifiAp[];\n//   imuData?: ImuData;\n// }\n\nexport interface PositioningData {\n  source: 'GNSS' | 'WIFI' | 'FUSED' | 'MOCK';\n  timestamp: number;\n  latitude: number;\n  longitude: number;\n  accuracy: number;\n  speed: number;\n  acceleration: number;\n  directionRad: number;\n  isMocked: boolean;\n  predicted?: boolean;\n}\n\nexport interface PermissionStatus {\n  location: 'granted' | 'denied';\n  wifi: 'granted' | 'denied';\n}\n\nexport interface DumonGeolocationPlugin {\n  startPositioning(): Promise<void>;\n  stopPositioning(): Promise<void>;\n  getLatestPosition(): Promise<PositioningData>;\n  checkAndRequestPermissions(): Promise<PermissionStatus>;\n\n  configureEdgeToEdge(options: {\n    bgColor: string;\n    style: 'DARK' | 'LIGHT';\n    overlay?: boolean;\n  }): Promise<void>;\n\n  addListener(\n    eventName: 'onPositionUpdate',\n    listenerFunc: (data: PositioningData) => void\n  ): PluginListenerHandle;\n}"]}

src/definitions.ts

@@ -61,6 +61,7 @@ export interface PositioningData {
   acceleration: number;
   directionRad: number;
   isMocked: boolean;
+  predicted?: boolean;
 }
 
 export interface PermissionStatus {