3 files changed, 83 insertions(+), 2 deletions(-)

M app/src/main/java/net/hokiegeek/qwingoroller/MainActivity.kt
M app/src/main/res/layout/activity_main.xml
M app/src/main/res/values/strings.xml

@@ 1,11 1,89 @@
 package net.hokiegeek.qwingoroller
 
-import androidx.appcompat.app.AppCompatActivity
+import android.content.Context
+import android.hardware.Sensor
+import android.hardware.SensorEvent
+import android.hardware.SensorEventListener
+import android.hardware.SensorManager
 import android.os.Bundle
+import android.util.Log
+import androidx.appcompat.app.AppCompatActivity
+import androidx.constraintlayout.widget.ConstraintLayout
+import kotlin.math.sqrt
 
 class MainActivity : AppCompatActivity() {
+    companion object {
+     /*
+     * The gForce that is necessary to register as shake.
+     * Must be greater than 1G (one earth gravity unit).
+     * You can install "G-Force", by Blake La Pierre
+     * from the Google Play Store and run it to see how
+     *  many G's it takes to register a shake
+     */
+        private const val SHAKE_THRESHOLD_GRAVITY = 2.7f
+        private const val SHAKE_SLOP_TIME_MS = 500
+        // private const val SHAKE_COUNT_RESET_TIME_MS = 3000
+    }
+
+    private val logTag = "QWINGO"
+
+    private var mSensorMgr: SensorManager? = null
+
+    private val mSensorListener = object : SensorEventListener {
+        private var mShakeTimestamp: Long = 0
+        // private var mShakeCount = 0
+        override fun onSensorChanged(se: SensorEvent) {
+            val gX = se.values[0] / SensorManager.GRAVITY_EARTH
+            val gY = se.values[1] / SensorManager.GRAVITY_EARTH
+            val gZ = se.values[2] / SensorManager.GRAVITY_EARTH
+            // gForce will be close to 1 when there is no movement.
+            val gForce: Float = sqrt(gX * gX + gY * gY + gZ * gZ)
+            if (gForce > SHAKE_THRESHOLD_GRAVITY) {
+                val now = System.currentTimeMillis()
+                // ignore shake events too close to each other (500ms)
+                if (mShakeTimestamp + SHAKE_SLOP_TIME_MS > now) {
+                    return
+                }
+                // reset the shake count after 3 seconds of no shakes
+                /*
+                if (mShakeTimestamp + SHAKE_COUNT_RESET_TIME_MS < now) {
+                    mShakeCount = 0
+                }
+                */
+                mShakeTimestamp = now
+                // mShakeCount++
+                Log.d(logTag, "ACTION: shake?")
+                roll()
+                // mListener!!.onShake(mShakeCount)
+            }
+        }
+
+        override fun onAccuracyChanged(sensor: Sensor, accuracy: Int) {}
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+
+        findViewById<ConstraintLayout>(R.id.layout).setOnClickListener {
+            Log.d(logTag, "ACTION: click")
+            roll()
+        }
+
+        mSensorMgr = getSystemService(Context.SENSOR_SERVICE) as SensorManager?
+    }
+
+    override fun onResume() {
+        super.onResume()
+        mSensorMgr?.registerListener(mSensorListener, mSensorMgr!!.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_UI)
+    }
+
+    override fun onPause() {
+        mSensorMgr?.unregisterListener(mSensorListener);
+        super.onPause()
+    }
+
+    private fun roll() {
+        Log.d(logTag, "TODO: roll!")
     }
-}>
\ No newline at end of file
+}

@@ 2,6 2,7 @@
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="#1B1B1B"


@@ 11,6 12,7 @@
         android:id="@+id/dieFace"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:contentDescription="@string/dieFaceDescription"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"

@@ 1,3 1,4 @@
 <resources>
     <string name="app_name">Qwingo Roller</string>
+    <string name="dieFaceDescription">The face of the die that it landed on after being rolled</string>
 </resources>=
\ No newline at end of file