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+# GaCy Android
+
+[ภาษาไทย](./README.md) | English | [简体中文](./README_ZH.md)
+
+GaCy Android is an Android companion and local server manager for the
+GaC-hkrpg-go project. The
+port is in progress: the app starts the Go SDK and game servers in a foreground
+service, or connects to an existing server.
+
+## Current status
+
+- An ARM64 debug build was tested on a physical phone: the user confirmed game
+  login, in-game map teleport, and restarting the server after an update.
+- The Go SDK, shared-data, game-server and KCP tests passed. These checks do not
+  establish that every game feature works on Android.
+- Character settings from the older ppSR runtime are not yet connected to the
+  Go runtime. `/give` and `/heal` are not implemented by the Go command API.
+
+## Features
+
+- Start, stop and restart the local server; connect to a remote server and
+  monitor its SDK health.
+- View and copy server logs, send GM commands and open the SRTool web app.
+- Use the game's own map to teleport. There is no separate teleport page in
+  the app navigation.
+- Submit an Unstuck request. The app reports it as queued only when the server
+  supplies a request ID; this does not confirm the game has processed it.
+- Configure the host and ports and display the actual app version in Settings.
+
+`/max` updates avatar level, promotion and rank while preserving other save
+fields. `/teleport <plane_id> [floor_id]` saves the scene for the next game
+connection. Both have automated tests but have not been verified in the game.
+`/clear lineup` is rejected because the active team cannot be empty.
+
+## Build
+
+Requirements: Android SDK 35, JDK 17 or 21, Go, Python, and a local checkout of
+GaC-hkrpg-go. The app requires Android 8.0 (API 26) or newer. Normal debug builds
+target ARM64.
+
+```powershell
+python tools/package_go_runtime.py <path-to-GaC-hkrpg-go>
+.\gradlew.bat testDebugUnitTest assembleDebug
+```
+
+The packaging script uses the current Go source and resources, and seeds
+player data from committed defaults. The APK is written to
+`app/build/outputs/apk/debug/app-debug.apk` and copied to the project root as
+`GaCy-Android-<versionName>-debug.apk`. APK files are ignored by Git.
+
+For the x86_64 emulator, use `--emulator` when packaging and add
+`-PgacyEmulator` to the Gradle command. These test executables are not part of
+the normal ARM64 build.
+
+## Runtime and network configuration
+
+The Go runtime stores its files under the app's private `files/gacy-go`
+directory, separate from old ppSR data. An update preserves player data and
+existing hotfix entries, while adding new bundled versions. A completely empty
+cached version does not override available bundled hotfix data.
+
+Set the Host in Settings to the address the game client uses to reach the
+phone. Use `127.0.0.1` when both run on the same device. Configure the SDK and
+game ports as needed; changes apply after restarting the server. Redirecting
+the game client's dispatch traffic remains a separate setup step. The Settings
+connection test checks the values currently entered; remote monitoring reports
+an error after three consecutive failed SDK health checks.