Add basic android project

.gitignore

@@ -29,3 +29,13 @@ CMakeSettings.json
 CMakeFiles
 CMakeCache.txt
 Makefile
+
+# Android Studio/Gradle
+.gradle/
+.externalNativeBuild
+.cxx/
+.idea/
+local.properties
+.project
+.classpath
+.settings

README.md

@@ -241,8 +241,31 @@ schroot --chroot jessie -- cmake --build build-in-chroot
 ```
 
 ## Android
+1. Set up [Android Studio/Android SDK](https://developer.android.com/studio).
 
-TODO
+### Android Studio
+Open the project located in the `android` folder and build.
+
+### Command-line
+```
+cd android
+./gradlew assembleRelease
+```
+
+### Customizing the build
+settings.gradle:
+* **rootProject.name** - project name displayed in Android Studio (optional).
+
+app/build.gradle:
+* **android->namespace** and **android->defaultConfig->applicationId** - set both to desired package name.
+* **getBuildNum** function - set **releaseDate** variable as desired.
+
+app/java/su/xash/hlsdk/MainActivity.java:
+* **.putExtra("gamedir", ...)** - set desired gamedir.
+
+src/main/AndroidManifest.xml:
+* **application->android:label** - set desired application name.
+* **su.xash.engine.gamedir** value - set to same as above.
 
 ## Nintendo Switch
 

android/app/build.gradle

@@ -0,0 +1,67 @@
+import java.time.LocalDateTime
+import java.time.Month
+import java.time.temporal.ChronoUnit
+
+apply plugin: 'com.android.application'
+
+android {
+    ndkVersion '26.1.10909125'
+    namespace 'com.example.hlsdk'
+
+    defaultConfig {
+        applicationId 'com.example.hlsdk'
+        versionName '1.0'
+        versionCode getBuildNum()
+        minSdkVersion 3
+        targetSdk 34
+        compileSdk 34
+    }
+
+    externalNativeBuild {
+        cmake {
+            version '3.22.1'
+            path file('../../CMakeLists.txt')
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    buildTypes {
+        debug {
+            minifyEnabled false
+            shrinkResources false
+            debuggable true
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+        }
+        release {
+            minifyEnabled false
+            shrinkResources false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+        }
+    }
+
+    lint {
+        abortOnError false
+    }
+
+    androidResources {
+        noCompress += ''
+    }
+
+    packagingOptions {
+        jniLibs {
+            useLegacyPackaging = true
+        }
+    }
+}
+
+static def getBuildNum() {
+    LocalDateTime now = LocalDateTime.now()
+    LocalDateTime releaseDate = LocalDateTime.of(2023, Month.DECEMBER, 28, 0, 0, 0)
+    int qBuildNum = releaseDate.until(now, ChronoUnit.DAYS)
+    int minuteOfDay = now.getHour() * 60 + now.getMinute()
+    return qBuildNum * 10000 + minuteOfDay
+}

android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:forceQueryable="true"
+        android:icon="@android:mipmap/sym_def_app_icon"
+        android:label="hlsdk-portable"
+        tools:targetApi="r">
+
+        <meta-data
+            android:name="su.xash.engine.gamedir"
+            android:value="valve" />
+
+        <activity
+            android:name="su.xash.hlsdk.MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+
+            <intent-filter>
+                <action android:name="su.xash.engine.MOD" />
+            </intent-filter>
+        </activity>
+    </application>
+
+    <queries>
+        <package android:name="su.xash.engine" />
+        <package android:name="su.xash.engine.test" />
+    </queries>
+</manifest>

android/app/src/main/java/su/xash/hlsdk/MainActivity.java

@@ -0,0 +1,37 @@
+package su.xash.hlsdk;
+
+import android.app.Activity;
+import android.content.ComponentName;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.net.Uri;
+import android.os.Bundle;
+
+public class MainActivity extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        String pkg = "su.xash.engine.test";
+
+        try {
+            getPackageManager().getPackageInfo(pkg, 0);
+        } catch (PackageManager.NameNotFoundException e) {
+            try {
+                pkg = "su.xash.engine";
+                getPackageManager().getPackageInfo(pkg, 0);
+            } catch (PackageManager.NameNotFoundException ex) {
+                startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=su.xash.engine")).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK));
+                finish();
+                return;
+            }
+        }
+
+        startActivity(new Intent().setComponent(new ComponentName(pkg, "su.xash.engine.XashActivity"))
+                .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK)
+                .putExtra("gamedir", "valve")
+                .putExtra("gamelibdir", getApplicationInfo().nativeLibraryDir)
+                .putExtra("package", getPackageName()));
+        finish();
+    }
+}

android/build.gradle

@@ -0,0 +1,17 @@
+buildscript {
+	repositories {
+		mavenCentral()
+		google()
+	}
+
+	dependencies {
+		classpath 'com.android.tools.build:gradle:8.2.0'
+    }
+}
+
+allprojects {
+	repositories {
+		mavenCentral()
+		google()
+	}
+}

android/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.
+# Default value: -Xmx10248m -XX:MaxPermSize=256m
+org.gradle.jvmargs=-Xmx2048m -XX:MaxMetaspaceSize=384m
+
+# 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
+# android.useDeprecatedNdk=true
+android.enableJetifier=true
+android.useAndroidX=true

android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Thu Dec 28 14:36:02 EET 2023
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists