Feature/android port

CMakeLists.txt

@@ -11,7 +11,11 @@ set(CMAKE_RELWITHDEBINFO_POSTFIX "")
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 set(CMAKE_SKIP_RPATH ON)
 
-add_executable(${PROJECT_NAME})
+if(ANDROID)
+  add_library(${PROJECT_NAME} SHARED)
+else()
+  add_executable(${PROJECT_NAME})
+endif()
 
 if(MSVC)
   add_definitions(-D_USE_MATH_DEFINES)
@@ -59,6 +63,12 @@ elseif(IOS)
     MACOSX_BUNDLE_BUNDLE_VERSION 1
     MACOSX_BUNDLE_SHORT_VERSION_STRING "1.0"
     XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY "iPhone Developer")
+elseif(ANDROID)
+  # Android build configuration
+  set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -u ANativeActivity_onCreate")
+  # Build as shared library for Android
+  set_target_properties(${PROJECT_NAME} PROPERTIES
+    LIBRARY_OUTPUT_NAME "opengothic")
 elseif(APPLE)
   enable_language(OBJCXX)
 endif()
@@ -96,6 +106,12 @@ endif()
 
 if(WIN32)
   target_link_libraries(${PROJECT_NAME} shlwapi DbgHelp)
+elseif(ANDROID)
+  # Add android_native_app_glue
+  set(ANDROID_NATIVE_APP_GLUE_DIR "${ANDROID_NDK}/sources/android/native_app_glue")
+  target_sources(${PROJECT_NAME} PRIVATE "${ANDROID_NATIVE_APP_GLUE_DIR}/android_native_app_glue.c")
+  target_include_directories(${PROJECT_NAME} PRIVATE "${ANDROID_NATIVE_APP_GLUE_DIR}")
+  target_link_libraries(${PROJECT_NAME} android log)
 elseif(UNIX)
   target_link_libraries(${PROJECT_NAME} -lpthread -ldl)
 endif()

android/.gitignore

@@ -0,0 +1,66 @@
+# Built application files
+*.apk
+*.ap_
+*.aab
+
+# Files for the ART/Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+out/
+
+# Gradle files
+.gradle/
+build/
+/build/
+/app/build/
+**/build/
+
+# Local configuration file
+local.properties
+/local.properties
+
+# Android Studio
+*.iml
+.idea/
+/.idea/
+*.hprof
+captures/
+/captures/
+
+# NDK
+.externalNativeBuild/
+.cxx/
+/app/.cxx/
+obj/
+
+# Keystore files
+*.jks
+*.keystore
+
+# Log files
+*.log
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Signing config
+signing.properties
+
+# Proguard
+proguard/
+
+# Misc
+*.swp
+*~

android/app/build.gradle

@@ -0,0 +1,69 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    namespace 'com.example.opengothic'
+    compileSdk 35
+
+    defaultConfig {
+        applicationId "com.example.opengothic"
+        minSdk 24
+        targetSdk 35
+        versionCode 1
+        versionName "1.0"
+
+        externalNativeBuild {
+            cmake {
+                cppFlags '-std=c++20 -fvisibility=hidden -ffunction-sections -fdata-sections'
+                arguments '-DANDROID_STL=c++_static',
+                          '-DBUILD_SHARED_LIBS=ON',
+                          '-DCMAKE_BUILD_TYPE=Release'
+            }
+        }
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    splits {
+        abi {
+            enable true
+            reset()
+            include 'arm64-v8a', 'x86_64'
+            universalApk false  // Set true if you also want a fat APK with all ABIs
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
+    }
+
+    externalNativeBuild {
+        cmake {
+            path file('src/main/cpp/CMakeLists.txt')
+            version '3.22.1'
+        }
+    }
+
+    buildFeatures {
+        prefab true
+    }
+
+    packagingOptions {
+        jniLibs {
+            // Debug symbols stripped automatically in release
+        }
+    }
+}
+
+dependencies {
+    implementation 'androidx.appcompat:appcompat:1.7.0'
+    implementation 'com.google.android.material:material:1.12.0'
+    implementation 'androidx.games:games-activity:3.0.5'
+}

android/app/proguard-rules.pro

@@ -0,0 +1,8 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in the Android SDK.
+
+# Keep native methods
+-keepclasseswithmembernames class * {
+    native <methods>;
+}

android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,48 @@
+<?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.READ_EXTERNAL_STORAGE"
+        android:maxSdkVersion="32" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+        android:maxSdkVersion="29"
+        tools:ignore="ScopedStorage" />
+    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
+        tools:ignore="ScopedStorage" />
+
+    <uses-feature android:glEsVersion="0x00030001" android:required="true" />
+    <uses-feature android:name="android.hardware.vulkan.level" android:required="false" />
+    <uses-feature android:name="android.hardware.vulkan.version" android:required="true" android:version="0x00401000" />
+
+    <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.OpenGothic"
+        android:hasFragileUserData="true"
+        android:requestLegacyExternalStorage="true"
+        tools:targetApi="31">
+
+        <activity
+            android:name="android.app.NativeActivity"
+            android:exported="true"
+            android:configChanges="orientation|screenSize|screenLayout|keyboardHidden"
+            android:screenOrientation="sensorLandscape"
+            android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen">
+
+            <meta-data
+                android:name="android.app.lib_name"
+                android:value="opengothic" />
+
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

android/app/src/main/cpp/CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.22.1)
+
+project(opengothic)
+
+# Path to the main OpenGothic project (parent of android folder)
+set(OPENGOTHIC_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/../../../../..")
+
+# Include the main project's CMakeLists.txt
+# The main CMakeLists.txt already handles ANDROID builds and creates a shared library
+add_subdirectory(${OPENGOTHIC_ROOT} ${CMAKE_CURRENT_BINARY_DIR}/opengothic)
+
+# The main project creates Gothic2Notr target, we need to rename it to opengothic
+# for Android to find it as libopengothic.so
+set_target_properties(Gothic2Notr PROPERTIES OUTPUT_NAME "opengothic")

android/app/src/main/res/ic_launcher.xml

@@ -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>

android/app/src/main/res/ic_launcher_round.xml

@@ -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>

android/app/src/main/res/values-night/themes.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="Theme.OpenGothic" parent="Theme.MaterialComponents.DayNight.NoActionBar">
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <item name="android:statusBarColor">@color/black</item>
+        <item name="android:windowFullscreen">true</item>
+        <item name="android:windowBackground">@color/black</item>
+    </style>
+</resources>

android/app/src/main/res/values/colors.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+</resources>

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">OpenGothic</string>
+</resources>

android/app/src/main/res/values/themes.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="Theme.OpenGothic" parent="Theme.MaterialComponents.DayNight.NoActionBar">
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <item name="android:statusBarColor">@color/black</item>
+        <item name="android:windowFullscreen">true</item>
+        <item name="android:windowBackground">@color/black</item>
+    </style>
+</resources>

android/app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<full-backup-content>
+</full-backup-content>

android/app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<data-extraction-rules>
+    <cloud-backup>
+        <include domain="sharedpref" path="."/>
+        <exclude domain="no_backup" path="."/>
+    </cloud-backup>
+</data-extraction-rules>

android/build.gradle

@@ -0,0 +1,5 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+    id 'com.android.application' version '8.7.3' apply false
+    id 'org.jetbrains.kotlin.android' version '2.0.0' apply false
+}

android/gradle.properties

@@ -0,0 +1,5 @@
+# Project-wide Gradle settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+android.useAndroidX=true
+kotlin.code.style=official
+android.nonTransitiveRClass=true

android/gradle/wrapper/gradle-wrapper.properties

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