Android port (#656)

* initial files

* get building

* proper paths & default to virtual mouse

* Wrap gradle under cmake & build SDL3.aar

run cmake with  -DANDROID_NDK_PATH=/path/to/ndk to generate the .aar & run the gradle build

if using Android Studio you will have to run the aar script manually(or do the cmake cmd) then put the normal cmake args inside '-PcmakeArgs="-DCMAKE_BUILD_TYPE=Release ...."'  at `Settings > Build, Execution, Deployment > Gradle-Android Compiler > Command-line Options`
Check CMakeLists.txt Android build block for more info

* workflow and format

* dont cmake -> gradle -> cmake

* icons

* prevent first start crash due to missing isle.ini

dont force require gles3 (vulkan & software are options)

* cleanup

* cmake script & ci cleanup

use a cmake script to downoad SDL3 sources for aar building

* script cleanups & gradle stub for android studio

handle the env var setting for the sdl3 aar build script

* signing

needed repository secrets:
- keystore  :  key.jks in base64
- keystorePassword  :  Key store password
- keyAlias  :  Key alias, ex key0
- keyPassword  :  Key Password

* conditionally run action without keys

* compile SDL once & cross-platformize gradle tasks

* suggestions

* use find_package over manual configuration

* use MxString

---------

Co-authored-by: Anders Jenbo <anders@jenbo.dk>
Co-authored-by: Christian Semmler <mail@csemmler.com>

.github/workflows/ci.yml

@@ -47,6 +47,7 @@ jobs:
           - { name: 'Emscripten',          os: 'ubuntu-latest',  generator: 'Ninja',                 dx5: false, config: false, emsdk: true, werror: true,   clang-tidy: false,  cmake-wrapper: 'emcmake' }
           - { name: 'Nintendo 3DS',        os: 'ubuntu-latest',  generator: 'Ninja',                 dx5: false, config: false, n3ds: true,  werror: true,   clang-tidy: false,  container: 'devkitpro/devkitarm:latest', cmake-args: '-DCMAKE_TOOLCHAIN_FILE=/opt/devkitpro/cmake/3DS.cmake' }
           - { name: 'Xbox One',            os: 'windows-latest', generator: 'Visual Studio 17 2022', dx5: false, config: false, msvc: true,  werror: false,  clang-tidy: false,  vc-arch: 'amd64', cmake-args: '-DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION=10.0.26100.0', xbox-one: true}
+          - { name: 'Android',             os: 'ubuntu-latest',  generator: 'Ninja',                 dx5: false, config: false, android: true, werror: true, clang-tidy: false,}
     steps:
       - name: Setup vcvars
         if: ${{ !!matrix.msvc }}
@@ -112,7 +113,41 @@ jobs:
 
       - uses: actions/checkout@v4
 
+      - name: Setup Java (Android)
+        if: ${{ matrix.android }}
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '17'
+
+      - name: Get CMake (Android)
+        if: ${{ matrix.android }}
+        uses: lukka/get-cmake@latest
+        with:
+          cmakeVersion: 3.30.5
+
+      - name: Build (Android)
+        if: ${{ matrix.android }}
+        env:
+          SIGNING_KEY_ALIAS: ${{ secrets.keyAlias }}
+          SIGNING_KEY_PASSWORD: ${{ secrets.keyPassword }}
+          SIGNING_STORE_PASSWORD: ${{ secrets.keystorePassword }}
+          SIGNING_STORE_FILE: ${{ github.workspace }}/release.keystore
+        run: |
+          echo "${{ secrets.keystore }}" | base64 -d > release.keystore
+          cd android-project
+          ./gradlew $([ -n "$SIGNING_KEY_ALIAS" ] && echo packageRelease || echo assembleDebug ) \
+            --info \
+            -PcmakeArgs="-DCMAKE_BUILD_TYPE=Release \
+              -DISLE_USE_DX5=${{ !!matrix.dx5 }} \
+              -DISLE_BUILD_CONFIG=${{ !!matrix.config }} \
+              -DENABLE_CLANG_TIDY=${{ !!matrix.clang-tidy  }} \
+              -DISLE_WERROR=${{ !!matrix.werror }} \
+              -DISLE_DEBUG=${{ matrix.debug || 'OFF' }} \
+              -Werror=dev"
+
       - name: Configure (CMake)
+        if: ${{ !matrix.android }}
         run: |
           ${{ matrix.cmake-wrapper || '' }} cmake -S . -B build -G "${{ matrix.generator }}" \
             ${{ matrix.cmake-args || '' }} \
@@ -126,10 +161,11 @@ jobs:
             -Werror=dev
 
       - name: Build (CMake)
+        if: ${{ !matrix.android }}
         run: cmake --build build --verbose --config Release
 
       - name: Package (CPack)
-        if: ${{ !matrix.n3ds }}
+        if: ${{ !matrix.n3ds && !matrix.android }}
         run: |
           cd build
           success=0
@@ -178,6 +214,12 @@ jobs:
           mv *.3dsx dist/
           mv *.cia dist/
 
+      - name: Package (Android)
+        if: ${{ matrix.android }}
+        run: |
+          mkdir -p build/dist
+          mv  android-project/app/build/outputs/apk/*/*.apk build/dist/
+
       - name: Package Assets Separately
         if: matrix.build-assets
         run: (cd build/assets && zip -r ../dist/isle-assets.zip .)
@@ -191,6 +233,7 @@ jobs:
             build/dist/*.AppImage
             build/dist/*.3dsx
             build/dist/*.cia
+            build/dist/*.apk
 
   flatpak:
     name: "Flatpak (${{ matrix.arch }})"

.gitignore

@@ -6,12 +6,14 @@ Release/
 /.idea
 .env
 .venv
+.gradle
 env/
 venv/
 ENV/
 VENV/
 env.bak/
 venv.bak/
+local.properties
 /build/
 /build_debug/
 /legobin/

CMakeLists.txt

@@ -73,22 +73,28 @@ if (DOWNLOAD_DEPENDENCIES)
   # FetchContent downloads and configures dependencies
   message(STATUS "Fetching SDL3 and iniparser. This might take a while...")
   include(FetchContent)
-  if (WINDOWS_STORE)
-    FetchContent_Declare(
-      SDL3
-      GIT_REPOSITORY "https://github.com/Helloyunho/SDL3-uwp.git"
-      GIT_TAG "main"
-      EXCLUDE_FROM_ALL
-    )
+
+  if(ANDROID)
+    # Built by Gradle
+    find_package(SDL3 REQUIRED CONFIG COMPONENTS Shared)
   else()
-    FetchContent_Declare(
+    if (WINDOWS_STORE)
+      FetchContent_Declare(
+        SDL3
+        GIT_REPOSITORY "https://github.com/Helloyunho/SDL3-uwp.git"
+        GIT_TAG "main"
+        EXCLUDE_FROM_ALL
+      )
+    else()
+      FetchContent_Declare(
         SDL3
         GIT_REPOSITORY "https://github.com/libsdl-org/SDL.git"
         GIT_TAG "main"
         EXCLUDE_FROM_ALL
-    )
+      )
+    endif()
+    FetchContent_MakeAvailable(SDL3)
   endif()
-  FetchContent_MakeAvailable(SDL3)
 
   FetchContent_Declare(
     iniparser
@@ -501,6 +507,13 @@ if (ISLE_EXTENSIONS)
 endif()
 
 if (ISLE_BUILD_APP)
+
+  if (ANDROID)
+    function(add_executable TARGET PLATFORM)
+      add_library(${TARGET} SHARED ${ARGN})
+    endfunction()
+  endif()
+
   add_executable(isle WIN32
     ISLE/res/isle.rc
     ISLE/isleapp.cpp
@@ -580,6 +593,11 @@ if (ISLE_BUILD_APP)
       ISLE/ios/config.cpp
     )
   endif()
+  if (ANDROID)
+    target_sources(isle PRIVATE
+            ISLE/android/config.cpp
+    )
+  endif()
   if(Python3_FOUND)
     if(NOT DEFINED PYTHON_PIL_AVAILABLE)
       execute_process(
@@ -746,7 +764,7 @@ endif()
 set(install_extra_targets)
 if(DOWNLOAD_DEPENDENCIES)
   get_property(sdl3_type TARGET SDL3::SDL3 PROPERTY TYPE)
-  if(sdl3_type STREQUAL "SHARED_LIBRARY")
+  if(sdl3_type STREQUAL "SHARED_LIBRARY" AND NOT ANDROID)
     list(APPEND install_extra_targets "SDL3-shared")
   endif()
 endif()

ISLE/android/config.cpp

@@ -0,0 +1,30 @@
+#include "config.h"
+
+#include "mxstring.h"
+
+#include <SDL3/SDL_filesystem.h>
+#include <SDL3/SDL_log.h>
+#include <SDL3/SDL_system.h>
+#include <iniparser.h>
+
+void Android_SetupDefaultConfigOverrides(dictionary* p_dictionary)
+{
+	SDL_Log("Overriding default config for Android");
+
+	const char* data = SDL_GetAndroidExternalStoragePath();
+	MxString savedata = MxString(data) + "/saves/";
+
+	if (!SDL_GetPathInfo(savedata.GetData(), NULL)) {
+		SDL_CreateDirectory(savedata.GetData());
+	}
+
+	iniparser_set(p_dictionary, "isle:diskpath", data);
+	iniparser_set(p_dictionary, "isle:cdpath", data);
+	iniparser_set(p_dictionary, "isle:mediapath", data);
+
+	iniparser_set(p_dictionary, "isle:savepath", savedata.GetData());
+
+	// Default to Virtual Mouse
+	char buf[16];
+	iniparser_set(p_dictionary, "isle:Touch Scheme", SDL_itoa(0, buf, 10));
+}

ISLE/android/config.h

@@ -0,0 +1,8 @@
+#ifndef ANDROID_CONFIG_H
+#define ANDROID_CONFIG_H
+
+#include "dictionary.h"
+
+void Android_SetupDefaultConfigOverrides(dictionary* p_dictionary);
+
+#endif // ANDROID_CONFIG_H

ISLE/isleapp.cpp

@@ -72,6 +72,10 @@
 #include "ios/config.h"
 #endif
 
+#ifdef ANDROID
+#include "android/config.h"
+#endif
+
 DECOMP_SIZE_ASSERT(IsleApp, 0x8c)
 
 // GLOBAL: ISLE 0x410030
@@ -1027,6 +1031,13 @@ bool IsleApp::LoadConfig()
 {
 #ifdef IOS
 	const char* prefPath = SDL_GetUserFolder(SDL_FOLDER_DOCUMENTS);
+#elif defined(ANDROID)
+	// SDL_GetAndroidExternalStoragePath() returns without a trailing / resulting in "filesisle.ini" :(
+	const char* androidPath = SDL_GetAndroidExternalStoragePath();
+	size_t len = SDL_strlen(androidPath) + 2;
+	char* prefPath = new char[len];
+	SDL_strlcpy(prefPath, androidPath, len);
+	SDL_strlcat(prefPath, "/", len);
 #else
 	char* prefPath = SDL_GetPrefPath("isledecomp", "isle");
 #endif
@@ -1128,6 +1139,9 @@ bool IsleApp::LoadConfig()
 #endif
 #ifdef IOS
 		IOS_SetupDefaultConfigOverrides(dict);
+#endif
+#ifdef ANDROID
+		Android_SetupDefaultConfigOverrides(dict);
 #endif
 		iniparser_dump_ini(dict, iniFP);
 		SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "New config written at '%s'", iniConfig);

android-project/.gitignore

@@ -0,0 +1,5 @@
+.cxx
+.gradle
+local.properties
+build
+*.aar

android-project/app/build.gradle

@@ -0,0 +1,101 @@
+plugins {
+    id 'com.android.application'
+}
+def androidProject = projectDir.parentFile
+
+android {
+    namespace "org.legoisland.isle"
+    compileSdk 35
+
+    defaultConfig {
+        applicationId 'org.legoisland.isle'
+        minSdk 21
+        targetSdk 35
+        versionCode 1
+        versionName '1.0'
+
+        externalNativeBuild {
+            cmake {
+                arguments '-DANDROID_STL=c++_shared', "-DFETCHCONTENT_BASE_DIR=${androidProject}/build/_deps"
+                if (project.hasProperty('cmakeArgs')) {
+                    project.cmakeArgs.split(" ").each {arg -> arguments arg}
+                }
+                abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
+            }
+        }
+    }
+    externalNativeBuild {
+        cmake {
+            version "3.30.5"
+            path '../../CMakeLists.txt'
+        }
+    }
+
+    signingConfigs {
+        register("release") {
+            enableV4Signing = true
+            keyAlias = System.getenv("SIGNING_KEY_ALIAS")
+            keyPassword = System.getenv("SIGNING_KEY_PASSWORD")
+            System.getenv("SIGNING_STORE_FILE")?.with { storeFile = file(it) }
+            storePassword = System.getenv("SIGNING_STORE_PASSWORD")
+        }
+    }
+    buildTypes {
+        release {
+            minifyEnabled true
+            signingConfig = signingConfigs.getByName("release")
+//             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    buildFeatures {
+        prefab true
+    }
+}
+
+afterEvaluate {
+    def androidPath = System.getenv("ANDROID_HOME") ?: android.sdkDirectory
+    def ndkPath = System.getenv("ANDROID_NDK_HOME") ?: android.ndkDirectory
+
+    tasks.named('compileSDL3AndroidArchive').configure {
+        environment "ANDROID_HOME", androidPath
+        environment "ANDROID_NDK_HOME", ndkPath
+    }
+}
+
+def aarDest = project.providers.provider { file("${projectDir}/libs/SDL3.aar") }
+tasks.register('downloadSDL3', Exec) {
+    workingDir = androidProject
+    commandLine 'cmake', '-P', 'downloadSDL3.cmake'
+}
+tasks.register('compileSDL3AndroidArchive', Exec) {
+    workingDir = androidProject
+    dependsOn(downloadSDL3)
+
+    def sdl3Dir = "build/_deps/sdl3-src"
+    commandLine 'python', "${sdl3Dir}/build-scripts/build-release.py",
+            '--actions', 'android',
+            '--fast', '--force',
+            "--root=${sdl3Dir}"
+
+    doLast {
+        def aarFile = file("${androidProject}/${sdl3Dir}/build-android").listFiles().find {
+            it.name.endsWith(".aar")
+        }
+        aarDest.get().parentFile.mkdirs()
+        aarFile.renameTo(aarDest.get())
+    }
+}
+tasks.register('ensureSDL3') {
+    // if DOWNLOAD_DEPENDENCIES=OFF download the version appropriate
+    // 'devel android zip' and place the .aar at `aarDest`
+    if (aarDest.get().exists()) { return false }
+    dependsOn(compileSDL3AndroidArchive)
+}
+
+dependencies {
+    implementation files('libs/SDL3.aar').builtBy(ensureSDL3)
+}

android-project/app/src/main/AndroidManifest.xml

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <!-- OpenGL ES 3.0 -->
+    <uses-feature
+        android:glEsVersion="0x00030000"
+        android:required="false" />
+
+    <!-- Touchscreen support -->
+    <uses-feature
+        android:name="android.hardware.touchscreen"
+        android:required="false" />
+
+    <!-- Game controller support -->
+    <uses-feature
+        android:name="android.hardware.bluetooth"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.gamepad"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.usb.host"
+        android:required="false" />
+
+    <!-- External mouse input events -->
+    <uses-feature
+        android:name="android.hardware.type.pc"
+        android:required="false" />
+
+    <!-- Allow access to the vibrator -->
+    <uses-permission android:name="android.permission.VIBRATE" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:hardwareAccelerated="true"
+        tools:targetApi="31">
+        <activity
+            android:name="org.legoisland.isle.IsleActivity"
+            android:exported="true"
+            android:configChanges="layoutDirection|locale|orientation|uiMode|screenLayout|screenSize|smallestScreenSize|keyboard|keyboardHidden|navigation"
+            android:preferMinimalPostProcessing="true"
+            android:screenOrientation="landscape"
+            android:launchMode="singleInstance">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

android-project/app/src/main/java/org/legoisland/isle/IsleActivity.java

@@ -0,0 +1,9 @@
+package org.legoisland.isle;
+
+import org.libsdl.app.SDLActivity;
+
+public class IsleActivity extends SDLActivity {
+    protected String[] getLibraries() {
+        return new String[] { "SDL3", "lego1", "isle" };
+    }
+}

android-project/app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,141 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="180"
+    android:viewportHeight="180">
+  <group android:scaleX="0.47"
+      android:scaleY="0.47"
+      android:translateX="47.7"
+      android:translateY="47.7">
+    <path
+        android:pathData="M16.09,16.09m-16.09,0a16.09,16.09 0,1 1,32.18 0a16.09,16.09 0,1 1,-32.18 0"
+        android:strokeWidth="6.09858"
+        android:fillColor="#ffff00"/>
+    <path
+        android:pathData="M9.23,38.09L9.23,65.53"
+        android:strokeLineJoin="round"
+        android:strokeWidth="9.15"
+        android:fillColor="#ffff00"
+        android:strokeColor="#ffff00"
+        android:strokeLineCap="round"/>
+    <path
+        android:pathData="m66.61,9.11l-27.44,0"
+        android:strokeLineJoin="round"
+        android:strokeWidth="9.15"
+        android:fillColor="#ffff00"
+        android:strokeColor="#ffff00"
+        android:strokeLineCap="round"/>
+    <path
+        android:pathData="M21.86,39.44 L29.29,61.95"
+        android:strokeLineJoin="round"
+        android:strokeWidth="9.15"
+        android:fillColor="#ffff00"
+        android:strokeColor="#ffff00"
+        android:strokeLineCap="round"/>
+    <path
+        android:pathData="m33.06,32.76 l19.56,13.39"
+        android:strokeLineJoin="round"
+        android:strokeWidth="9.15"
+        android:fillColor="#ffff00"
+        android:strokeColor="#ffff00"
+        android:strokeLineCap="round"/>
+    <path
+        android:pathData="m38.74,20.71 l22.48,7.51"
+        android:strokeLineJoin="round"
+        android:strokeWidth="9.15"
+        android:fillColor="#ffff00"
+        android:strokeColor="#ffff00"
+        android:strokeLineCap="round"/>
+    <path
+        android:pathData="M31.84,157.94l131.47,0l0,18.05l-131.47,0z"
+        android:strokeLineJoin="round"
+        android:strokeWidth="8.01"
+        android:fillColor="#ffff00"
+        android:strokeColor="#ffff00"
+        android:strokeLineCap="butt"/>
+    <path
+        android:pathData="M31.84,79.75l131.47,0l0,18.05l-131.47,0z"
+        android:strokeLineJoin="round"
+        android:strokeWidth="8.01"
+        android:fillColor="#ffff00"
+        android:strokeColor="#ffff00"
+        android:strokeLineCap="butt"/>
+    <path
+        android:pathData="M31.84,131.88l131.47,0l0,18.05l-131.47,0z"
+        android:strokeLineJoin="round"
+        android:strokeWidth="8.01"
+        android:fillColor="#ff0000"
+        android:strokeColor="#ff0000"
+        android:strokeLineCap="butt"/>
+    <path
+        android:pathData="M31.84,105.81l131.47,0l0,18.05l-131.47,0z"
+        android:strokeLineJoin="round"
+        android:strokeWidth="8.01"
+        android:fillColor="#0000ff"
+        android:strokeColor="#0000ff"
+        android:strokeLineCap="butt"/>
+    <path
+        android:pathData="M70.06,80.85l55.04,0l0,68.99l-55.04,0z"
+        android:strokeLineJoin="miter"
+        android:strokeWidth="8.91"
+        android:fillColor="#000000"
+        android:strokeColor="#000000"
+        android:strokeLineCap="butt"/>
+    <path
+        android:pathData="M72.74,85.31l20.36,0l0,24.52l-20.36,0z"
+        android:strokeLineJoin="round"
+        android:strokeWidth="3.04"
+        android:fillColor="#00ffff"
+        android:strokeColor="#00ffff"
+        android:strokeLineCap="butt"/>
+    <path
+        android:pathData="M101.96,85.31l20.36,0l0,24.52l-20.36,0z"
+        android:strokeLineJoin="round"
+        android:strokeWidth="3.04"
+        android:fillColor="#00ffff"
+        android:strokeColor="#00ffff"
+        android:strokeLineCap="butt"/>
+    <path
+        android:pathData="M72.89,116.22l20.06,0l0,30.02l-20.06,0z"
+        android:strokeLineJoin="round"
+        android:strokeWidth="3.34"
+        android:fillColor="#00ffff"
+        android:strokeColor="#00ffff"
+        android:strokeLineCap="butt"/>
+    <path
+        android:pathData="M102.11,116.22l20.06,0l0,30.02l-20.06,0z"
+        android:strokeLineJoin="round"
+        android:strokeWidth="3.34"
+        android:fillColor="#00ffff"
+        android:strokeColor="#00ffff"
+        android:strokeLineCap="butt"/>
+    <path
+        android:pathData="M131.19,7.33L131.19,55.6"
+        android:strokeLineJoin="round"
+        android:strokeWidth="4.57"
+        android:fillColor="#ff0000"
+        android:strokeColor="#000000"
+        android:strokeLineCap="round"/>
+    <path
+        android:pathData="m111.99,3.21 l38.38,29.26"
+        android:strokeLineJoin="round"
+        android:strokeWidth="4.57"
+        android:fillColor="#ff0000"
+        android:strokeColor="#000000"
+        android:strokeLineCap="round"/>
+    <path
+        android:pathData="m115.82,19.64 l30.2,23.02"
+        android:strokeLineJoin="round"
+        android:strokeWidth="4.57"
+        android:fillColor="#ff0000"
+        android:strokeColor="#000000"
+        android:strokeLineCap="round"/>
+    <path
+        android:pathData="M19.99,75.94H173.06L150.4,51.32h-7.63l-5.02,6.19h-7.47l-4.27,-8.06h-7.59l-4.57,8.06h-8l-4.69,-8.06h-7.44l-4.18,8.06h-8.45l-3.9,-8.06h-7.23l-4.36,8.06h-8.61l-5.45,-6.19h-6.08z"
+        android:strokeLineJoin="round"
+        android:strokeWidth="3.04929"
+        android:fillColor="#ff0000"
+        android:strokeColor="#ff0000"
+        android:strokeLineCap="butt"/>
+  </group>
+</vector>

android-project/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

android-project/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

android-project/app/src/main/res/values/ic_launcher_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#39A0D9</color>
+</resources>

android-project/app/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Lego Island</string>
+</resources>

android-project/app/src/main/res/values/styles.xml

@@ -0,0 +1,8 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+    </style>
+
+</resources>

android-project/build.gradle

@@ -0,0 +1,4 @@
+plugins {
+    id 'com.android.application' version '8.7.0' apply false
+    id 'com.android.library' version '8.7.0' apply false
+}

android-project/downloadSDL3.cmake

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.25...4.0 FATAL_ERROR)
+
+include(FetchContent)
+
+set(FETCHCONTENT_BASE_DIR "build/_deps")
+
+FetchContent_Populate(
+  SDL3
+  GIT_REPOSITORY "https://github.com/libsdl-org/SDL.git"
+  GIT_TAG "main"
+  SOURCE_DIR "build/_deps/sdl3-src"
+  BINARY_DIR "build/_deps/sdl3-build"
+)

android-project/gradle.properties

@@ -0,0 +1,21 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true

android-project/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.12-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME

android-project/gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

android-project/gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

android-project/settings.gradle

@@ -0,0 +1,16 @@
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        google()
+        mavenCentral()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+rootProject.name = "legoisland"
+include ':app'

miniwin/CMakeLists.txt

@@ -44,7 +44,7 @@ if(NOT WINDOWS_STORE)
     message(STATUS "🧩 OpenGL 1.x support not enabled — needs OpenGL")
   endif()
 
-  find_library(OPENGL_ES3_LIBRARY NAMES GLESv2)
+  find_library(OPENGL_ES3_LIBRARY NAMES GLESv3 GLESv2)
   if(EMSCRIPTEN OR OPENGL_ES3_LIBRARY)
     message(STATUS "Found OpenGL: enabling OpenGL ES 3.x renderer")
     target_sources(miniwin PRIVATE src/d3drm/backends/opengles3/renderer.cpp)

settings.gradle

@@ -0,0 +1 @@
+includeBuild('android-project')