Add base project files.

android/build.gradle

@@ -0,0 +1,90 @@
+android {
+    buildToolsVersion "29.0.2"
+    compileSdkVersion 29
+    sourceSets {
+        main {
+            manifest.srcFile 'AndroidManifest.xml'
+            java.srcDirs = ['src']
+            aidl.srcDirs = ['src']
+            renderscript.srcDirs = ['src']
+            res.srcDirs = ['res']
+            assets.srcDirs = ['assets']
+            jniLibs.srcDirs = ['libs']
+        }
+
+    }
+    packagingOptions {
+        exclude 'META-INF/robovm/ios/robovm.xml'
+    }
+    defaultConfig {
+        applicationId "com.me.asteroids"
+        minSdkVersion 14
+        targetSdkVersion 29
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+
+// called every time gradle gets executed, takes the native dependencies of
+// the natives configuration, and extracts them to the proper libs/ folders
+// so they get packed with the APK.
+task copyAndroidNatives {
+    doFirst {
+        file("libs/armeabi/").mkdirs()
+        file("libs/armeabi-v7a/").mkdirs()
+        file("libs/arm64-v8a/").mkdirs()
+        file("libs/x86_64/").mkdirs()
+        file("libs/x86/").mkdirs()
+
+        configurations.natives.files.each { jar ->
+            def outputDir = null
+            if (jar.name.endsWith("natives-arm64-v8a.jar")) outputDir = file("libs/arm64-v8a")
+            if (jar.name.endsWith("natives-armeabi-v7a.jar")) outputDir = file("libs/armeabi-v7a")
+            if(jar.name.endsWith("natives-armeabi.jar")) outputDir = file("libs/armeabi")
+            if(jar.name.endsWith("natives-x86_64.jar")) outputDir = file("libs/x86_64")
+            if(jar.name.endsWith("natives-x86.jar")) outputDir = file("libs/x86")
+            if(outputDir != null) {
+                copy {
+                    from zipTree(jar)
+                    into outputDir
+                    include "*.so"
+                }
+            }
+        }
+    }
+}
+
+tasks.whenTaskAdded { packageTask ->
+    if (packageTask.name.contains("package")) {
+        packageTask.dependsOn 'copyAndroidNatives'
+    }
+}
+
+task run(type: Exec) {
+    def path
+    def localProperties = project.file("../local.properties")
+    if (localProperties.exists()) {
+        Properties properties = new Properties()
+        localProperties.withInputStream { instr ->
+            properties.load(instr)
+        }
+        def sdkDir = properties.getProperty('sdk.dir')
+        if (sdkDir) {
+            path = sdkDir
+        } else {
+            path = "$System.env.ANDROID_HOME"
+        }
+    } else {
+        path = "$System.env.ANDROID_HOME"
+    }
+
+    def adb = path + "/platform-tools/adb"
+    commandLine "$adb", 'shell', 'am', 'start', '-n', 'com.me.asteroids/com.me.asteroids.AndroidLauncher'
+}

android/proguard-rules.pro

@@ -0,0 +1,45 @@
+# To enable ProGuard in your project, edit project.properties
+# to define the proguard.config property as described in that file.
+#
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in ${sdk.dir}/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the ProGuard
+# include property in project.properties.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+-verbose
+
+-dontwarn android.support.**
+-dontwarn com.badlogic.gdx.backends.android.AndroidFragmentApplication
+-dontwarn com.badlogic.gdx.utils.GdxBuild
+-dontwarn com.badlogic.gdx.physics.box2d.utils.Box2DBuild
+-dontwarn com.badlogic.gdx.jnigen.BuildTarget*
+-dontwarn com.badlogic.gdx.graphics.g2d.freetype.FreetypeBuild
+
+-keep class com.badlogic.gdx.controllers.android.AndroidControllers
+
+-keepclassmembers class com.badlogic.gdx.backends.android.AndroidInput* {
+   <init>(com.badlogic.gdx.Application, android.content.Context, java.lang.Object, com.badlogic.gdx.backends.android.AndroidApplicationConfiguration);
+}
+
+-keepclassmembers class com.badlogic.gdx.physics.box2d.World {
+   boolean contactFilter(long, long);
+   void    beginContact(long);
+   void    endContact(long);
+   void    preSolve(long, long);
+   void    postSolve(long, long);
+   boolean reportFixture(long);
+   float   reportRayFixture(long, float, float, float, float, float);
+}

android/project.properties

@@ -0,0 +1,9 @@
+# This file is used by the Eclipse ADT plugin. It is unnecessary for IDEA and Android Studio projects, which
+# configure Proguard and the Android target via the build.gradle file.
+
+# To enable ProGuard to work with Eclipse ADT, uncomment this (available properties: sdk.dir, user.home)
+# and ensure proguard.jar in the Android SDK is up to date (or alternately reduce the android target to 23 or lower):
+# proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-rules.pro
+
+# Project target.
+target=android-19

android/src/com/me/asteroids/AndroidLauncher.java

@@ -0,0 +1,16 @@
+package com.me.asteroids;
+
+import android.os.Bundle;
+
+import com.badlogic.gdx.backends.android.AndroidApplication;
+import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration;
+import com.me.asteroids.Asteroids;
+
+public class AndroidLauncher extends AndroidApplication {
+	@Override
+	protected void onCreate (Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		AndroidApplicationConfiguration config = new AndroidApplicationConfiguration();
+		initialize(new Asteroids(), config);
+	}
+}