Initial commit, adding original binaries, initial watch and companion apps which can talk

2026-06-01 15:53:11 +02:00
commit d7adb56197
63 changed files with 1787 additions and 0 deletions
@@ -0,0 +1,24 @@
+package de.ladkau.schwertundmagieonpebblecompanionapp
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("de.ladkau.schwertundmagieonpebblecompanionapp", appContext.packageName)
+    }
+}
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SchwertUndMagieOnPebbleCompanionApp">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
@@ -0,0 +1,37 @@
+package de.ladkau.schwertundmagieonpebblecompanionapp
+
+import android.graphics.Bitmap
+import java.nio.ByteBuffer
+
+class C64Engine {
+    // Native hooks representing underlying open-source emulator loops (e.g., Frodo Core)
+    external fun initEmulator(romPath: String): Boolean
+    external fun runFrame()
+    external fun getRawVideoBuffer(buffer: ByteBuffer) // Populates native 320x200 ARGB pixels
+    external fun injectNativeKey(keyCode: Int, isPressed: Boolean)
+
+    companion object {
+        init {
+            System.loadLibrary("frodoc64_core")
+        }
+    }
+
+    // Maps standard incoming string commands to traditional C64 matrix keycodes
+    fun handleWatchInput(command: String) {
+        val c64KeyCode = when (command) {
+            "1" -> 0x31 // C64 '1'
+            "2" -> 0x32 // C64 '2'
+            "3" -> 0x33 // C64 '3'
+            "Y" -> 0x59 // C64 'Y'
+            "N" -> 0x4E // C64 'N'
+            else -> return
+        }
+
+        // Simulates a clean hardware keypress cycle
+        Thread {
+            injectNativeKey(c64KeyCode, true)
+            Thread.sleep(100) // Hold down frame duration
+            injectNativeKey(c64KeyCode, false)
+        }.start()
+    }
+}
@@ -0,0 +1,74 @@
+package de.ladkau.schwertundmagieonpebblecompanionapp
+
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.IBinder
+import com.getpebble.android.kit.PebbleKit
+import com.getpebble.android.kit.PebbleKit.PebbleDataReceiver
+import com.getpebble.android.kit.util.PebbleDictionary
+import java.util.UUID
+
+class EmulatorService : Service() {
+    private val PEBBLE_APP_UUID = UUID.fromString("6d616769-652d-c64p-ebbl-e57591684000")
+    private val KEY_COMMAND = 1
+
+    private lateinit var emulatorEngine: C64Engine
+    private lateinit var watchStreamer: PebbleStreamer
+    private var isRunning = false
+    private var pebbleDataReceiver: PebbleDataReceiver? = null
+
+    override fun onCreate() {
+        super.onCreate()
+        emulatorEngine = C64Engine()
+        watchStreamer = PebbleStreamer(this)
+
+        // Boot standard disk path containing Schwert und Magie Part 1
+        val romPath = filesDir.absolutePath + "/schwert_und_magie_1.d64"
+        emulatorEngine.initEmulator(romPath)
+
+        setupPebbleInputReceiver()
+        startEmulationLoop()
+    }
+
+    private fun setupPebbleInputReceiver() {
+        pebbleDataReceiver = object : PebbleDataReceiver(PEBBLE_APP_UUID) {
+            override fun receiveData(context: Context?, transactionId: Int, data: PebbleDictionary) {
+                // Read ASCII string parsed by watch selections
+                val command = data.getString(KEY_COMMAND)
+                if (command != null) {
+                    emulatorEngine.handleWatchInput(command)
+                }
+            }
+        }
+        PebbleKit.registerReceivedDataHandler(this, pebbleDataReceiver)
+    }
+
+    private fun startEmulationLoop() {
+        isRunning = true
+        Thread {
+            val TargetFrameTimeMs = 33 // Aiming roughly around standard video refresh increments
+            while (isRunning) {
+                val startTime = System.currentTimeMillis()
+
+                emulatorEngine.runFrame()
+                watchStreamer.processAndStreamFrame(emulatorEngine)
+
+                val elapsed = System.currentTimeMillis() - startTime
+                if (elapsed < TargetFrameTimeMs) {
+                    Thread.sleep(TargetFrameTimeMs - elapsed)
+                }
+            }
+        }.start()
+    }
+
+    override fun onDestroy() {
+        isRunning = false
+        super.onDestroy()
+        try {
+            unregisterReceiver(pebbleDataReceiver)
+        } catch (e: Exception) { /* Context safety cleanup */ }
+    }
+
+    override fun onBind(intent: Intent?): IBinder? = null
+}
@@ -0,0 +1,100 @@
+package de.ladkau.schwertundmagieonpebblecompanionapp
+
+import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.util.Log
+import android.widget.ScrollView
+import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+import fi.iki.elonen.NanoHTTPD
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+
+private const val PORT = 8888
+private const val TAG = "SuM"
+
+class MainActivity : AppCompatActivity() {
+
+    private lateinit var tvStatus: TextView
+    private lateinit var tvTime: TextView
+    private lateinit var tvLog: TextView
+    private lateinit var scrollLog: ScrollView
+
+    private val mainHandler = Handler(Looper.getMainLooper())
+    private val timeFormat = SimpleDateFormat("HH:mm:ss", Locale.getDefault())
+    private var server: CompanionServer? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        tvStatus = findViewById(R.id.tv_status)
+        tvTime = findViewById(R.id.tv_time)
+        tvLog = findViewById(R.id.tv_log)
+        scrollLog = findViewById(R.id.scroll_log)
+
+        server = CompanionServer(PORT, timeFormat,
+            onTimeFetched = { time ->
+                mainHandler.post { tvTime.text = "Serving time: $time" }
+            },
+            onKey = { cmd ->
+                Log.d(TAG, "Key received: $cmd")
+                mainHandler.post { appendLog(cmd) }
+            }
+        )
+        try {
+            server?.start()
+            tvStatus.text = "Listening on localhost:$PORT"
+            Log.d(TAG, "HTTP server started on port $PORT")
+        } catch (e: Exception) {
+            tvStatus.text = "Server error: ${e.message}"
+            Log.e(TAG, "Failed to start server", e)
+        }
+    }
+
+    private fun appendLog(entry: String) {
+        val timestamp = timeFormat.format(Date())
+        tvLog.text = "[$timestamp] $entry\n${tvLog.text}"
+        scrollLog.post { scrollLog.scrollTo(0, 0) }
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        server?.stop()
+    }
+}
+
+class CompanionServer(
+    port: Int,
+    private val timeFormat: SimpleDateFormat,
+    private val onTimeFetched: (String) -> Unit,
+    private val onKey: (String) -> Unit
+) : NanoHTTPD(port) {
+
+    override fun serve(session: IHTTPSession): Response {
+        Log.d(TAG, "HTTP ${session.method} ${session.uri} params=${session.parameters}")
+        val response = when (session.uri) {
+            "/time" -> {
+                val time = timeFormat.format(Date())
+                onTimeFetched(time)
+                newFixedLengthResponse(
+                    Response.Status.OK,
+                    "application/json",
+                    """{"time":"$time"}"""
+                )
+            }
+            "/key" -> {
+                val cmd = session.parameters["cmd"]?.firstOrNull().orEmpty()
+                if (cmd.isNotEmpty()) onKey(cmd)
+                newFixedLengthResponse(Response.Status.OK, "text/plain", "ok")
+            }
+            else -> newFixedLengthResponse(
+                Response.Status.NOT_FOUND, "text/plain", "not found"
+            )
+        }
+        response.addHeader("Access-Control-Allow-Origin", "*")
+        return response
+    }
+}
@@ -0,0 +1,76 @@
+package de.ladkau.schwertundmagieonpebblecompanionapp
+
+import android.content.Context
+import android.graphics.Bitmap
+import com.getpebble.android.kit.PebbleKit
+import com.getpebble.android.kit.util.PebbleDictionary
+import java.nio.ByteBuffer
+import java.util.UUID
+
+class PebbleStreamer(private val context: Context) {
+    // Matches the unique watch app configuration ID
+    private val PEBBLE_APP_UUID = UUID.fromString("6d616769-652d-c64p-ebbl-e57591684000")
+    private val KEY_FRAMEBUFFER = 0
+
+    private val c64Width = 320
+    private val c64Height = 200
+    private val targetWidth = 144
+    private val targetHeight = 168
+
+    private val rawVideoByteBuffer = ByteBuffer.allocateDirect(c64Width * c64Height * 4)
+    private val previousPackedFrame = ByteArray(3024) // Base baseline to identify delta frames
+
+    fun processAndStreamFrame(engine: C64Engine) {
+        rawVideoByteBuffer.clear()
+        engine.getRawVideoBuffer(rawVideoByteBuffer)
+        rawVideoByteBuffer.rewind()
+
+        // 1. Downsample raw output directly to 144x168 target matrix via threshold loop
+        val packedFrame = ByteArray(3024) // 144 * 168 / 8 bits
+        var byteIndex = 0
+        var bitCounter = 0
+        var currentByte = 0
+
+        // Calculate steps for nearest-neighbor scaling while stripping non-essential margins
+        val scaleX = c64Width.toFloat() / targetWidth.toFloat()
+        val scaleY = c64Height.toFloat() / targetHeight.toFloat()
+
+        for (y in 0 until targetHeight) {
+            val sourceY = (y * scaleY).toInt().coerceIn(0, c64Height - 1)
+            for (x in 0 until targetWidth) {
+                val sourceX = (x * scaleX).toInt().coerceIn(0, c64Width - 1)
+
+                // Read Pixel Integer (ARGB)
+                val pixelIdx = (sourceY * c64Width + sourceX) * 4
+                val r = rawVideoByteBuffer.get(pixelIdx + 1).toInt() and 0xFF
+                val g = rawVideoByteBuffer.get(pixelIdx + 2).toInt() and 0xFF
+                val b = rawVideoByteBuffer.get(pixelIdx + 3).toInt() and 0xFF
+
+                // Traditional relative luminance formula for 1-bit thresholding
+                val luminance = (0.299 * r + 0.587 * g + 0.114 * b)
+                val bit = if (luminance > 128) 1 else 0 // 1 = White background, 0 = Dark Text
+
+                // Pack bits securely into destination byte indices
+                currentByte = (currentByte shl 1) or bit
+                bitCounter++
+
+                if (bitCounter == 8) {
+                    packedFrame[byteIndex++] = currentByte.toByte()
+                    currentByte = 0
+                    bitCounter = 0
+                }
+            }
+        }
+
+        // 2. Perform simple Dirty Frame Check to preserve BLE airwaves
+        if (packedFrame.contentEquals(previousPackedFrame)) {
+            return // Game screen is currently static; abort transfer
+        }
+        System.arraycopy(packedFrame, 0, previousPackedFrame, 0, packedFrame.size)
+
+        // 3. Dispatch the payload out to the connected Pebble Watch
+        val dict = PebbleDictionary()
+        dict.addBytes(KEY_FRAMEBUFFER, packedFrame)
+        PebbleKit.sendDataToPebble(context, PEBBLE_APP_UUID, dict)
+    }
+}
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
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+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
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+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
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+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
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+        android:fillColor="#00000000"
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+        android:fillColor="#00000000"
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+        android:fillColor="#00000000"
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+        android:fillColor="#00000000"
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+        android:fillColor="#00000000"
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+        android:fillColor="#00000000"
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+        android:fillColor="#00000000"
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+        android:fillColor="#00000000"
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+        android:fillColor="#00000000"
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+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
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+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/tv_status"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Watch: Not connected"
+        android:textSize="16sp"
+        android:textStyle="bold" />
+
+    <TextView
+        android:id="@+id/tv_time"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="Sending: --:--:--"
+        android:textSize="24sp" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="Keystrokes from watch:"
+        android:textSize="14sp"
+        android:textStyle="bold" />
+
+    <ScrollView
+        android:id="@+id/scroll_log"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_marginTop="4dp"
+        android:layout_weight="1"
+        android:background="#F5F5F5">
+
+        <TextView
+            android:id="@+id/tv_log"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:fontFamily="monospace"
+            android:padding="8dp"
+            android:textSize="13sp" />
+
+    </ScrollView>
+
+</LinearLayout>
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
@@ -0,0 +1,7 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.SchwertUndMagieOnPebbleCompanionApp" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your dark theme here. -->
+        <!-- <item name="colorPrimary">@color/my_dark_primary</item> -->
+    </style>
+</resources>
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SchwertUndMagieOnPebbleCompanionApp</string>
+</resources>
@@ -0,0 +1,9 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.SchwertUndMagieOnPebbleCompanionApp" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your light theme here. -->
+        <!-- <item name="colorPrimary">@color/my_light_primary</item> -->
+    </style>
+
+    <style name="Theme.SchwertUndMagieOnPebbleCompanionApp" parent="Base.Theme.SchwertUndMagieOnPebbleCompanionApp" />
+</resources>
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older than API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>
@@ -0,0 +1,17 @@
+package de.ladkau.schwertundmagieonpebblecompanionapp
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}