Re-architecture of the Godot Android plugin.

platform/android/java/app/AndroidManifest.xml

@@ -6,9 +6,6 @@
     android:versionName="1.0"
     android:installLocation="auto" >
 
-    <!-- Adding custom text to the manifest is fine, but do it outside the custom USER and APPLICATION BEGIN/END comments, -->
-    <!-- as that gets rewritten. -->
-
     <supports-screens
         android:smallScreens="true"
         android:normalScreens="true"
@@ -19,14 +16,11 @@
         android:glEsVersion="0x00020000"
         android:required="true" />
 
-<!-- Custom user permissions XML added by add-ons. It's recommended to add them from the export preset, though. -->
-<!--CHUNK_USER_PERMISSIONS_BEGIN-->
-<!--CHUNK_USER_PERMISSIONS_END-->
-
-    <!-- Any tag in this line after android:icon will be erased when doing custom builds. -->
-    <!-- If you want to add tags manually, do before it. -->
-    <!-- WARNING: This should stay on a single line until the parsing code is improved. See GH-32414. -->
-    <application android:label="@string/godot_project_name_string" android:allowBackup="false" tools:ignore="GoogleAppIndexingWarning" android:icon="@mipmap/icon" >
+    <application
+        android:label="@string/godot_project_name_string"
+        android:allowBackup="false"
+        tools:ignore="GoogleAppIndexingWarning"
+        android:icon="@mipmap/icon" >
 
         <!-- The following metadata values are replaced when Godot exports, modifying them here has no effect. -->
         <!-- Do these changes in the export preset. Adding new ones is fine. -->
@@ -36,6 +30,11 @@
             android:name="xr_mode_metadata_name"
             android:value="xr_mode_metadata_value" />
 
+        <!-- Metadata populated at export time and used by Godot to figure out which plugins must be enabled. -->
+        <meta-data
+            android:name="custom_template_plugins"
+            android:value="custom_template_plugins_value"/>
+
         <activity
             android:name=".GodotApp"
             android:label="@string/godot_project_name_string"
@@ -52,10 +51,6 @@
             </intent-filter>
         </activity>
 
-<!-- Custom application XML added by add-ons. -->
-<!--CHUNK_APPLICATION_BEGIN-->
-<!--CHUNK_APPLICATION_END-->
-
     </application>
 
 </manifest>

platform/android/java/app/build.gradle

@@ -1,7 +1,4 @@
 // Gradle build config for Godot Engine's Android port.
-//
-// Do not remove/modify comments ending with BEGIN/END, they are used to inject
-// addon-specific configuration.
 apply from: 'config.gradle'
 
 buildscript {
@@ -10,14 +7,10 @@ buildscript {
     repositories {
         google()
         jcenter()
-//CHUNK_BUILDSCRIPT_REPOSITORIES_BEGIN
-//CHUNK_BUILDSCRIPT_REPOSITORIES_END
     }
     dependencies {
         classpath libraries.androidGradlePlugin
         classpath libraries.kotlinGradlePlugin
-//CHUNK_BUILDSCRIPT_DEPENDENCIES_BEGIN
-//CHUNK_BUILDSCRIPT_DEPENDENCIES_END
     }
 }
 
@@ -28,25 +21,35 @@ allprojects {
         mavenCentral()
         google()
         jcenter()
-//CHUNK_ALLPROJECTS_REPOSITORIES_BEGIN
-//CHUNK_ALLPROJECTS_REPOSITORIES_END
     }
 }
 
 dependencies {
     implementation libraries.supportCoreUtils
     implementation libraries.kotlinStdLib
+    implementation libraries.v4Support
 
     if (rootProject.findProject(":lib")) {
         implementation project(":lib")
+    } else if (rootProject.findProject(":godot:lib")) {
+        implementation project(":godot:lib")
     } else {
         // Custom build mode. In this scenario this project is the only one around and the Godot
         // library is available through the pre-generated godot-lib.*.aar android archive files.
         debugImplementation fileTree(dir: 'libs/debug', include: ['*.jar', '*.aar'])
         releaseImplementation fileTree(dir: 'libs/release', include: ['*.jar', '*.aar'])
     }
-//CHUNK_DEPENDENCIES_BEGIN
-//CHUNK_DEPENDENCIES_END
+
+    // Godot prebuilt plugins
+    implementation fileTree(dir: 'libs/plugins', include: ["GodotPayment*.aar"])
+
+    // Godot user plugins dependencies
+    String pluginsDir = getGodotPluginsDirectory()
+    String[] pluginsBinaries = getGodotPluginsBinaries()
+    if (pluginsDir != null && !pluginsDir.isEmpty() &&
+        pluginsBinaries != null && pluginsBinaries.size() > 0) {
+        implementation fileTree(dir: pluginsDir, include: pluginsBinaries)
+    }
 }
 
 android {
@@ -58,8 +61,6 @@ android {
         applicationId getExportPackageName()
         minSdkVersion versions.minSdk
         targetSdkVersion versions.targetSdk
-//CHUNK_ANDROID_DEFAULTCONFIG_BEGIN
-//CHUNK_ANDROID_DEFAULTCONFIG_END
     }
 
     lintOptions {
@@ -81,37 +82,13 @@ android {
     sourceSets {
         main {
             manifest.srcFile 'AndroidManifest.xml'
-            java.srcDirs = [
-                'src'
-//DIR_SRC_BEGIN
-//DIR_SRC_END
-            ]
-            res.srcDirs = [
-                'res'
-//DIR_RES_BEGIN
-//DIR_RES_END
-            ]
-            aidl.srcDirs = [
-                'aidl'
-//DIR_AIDL_BEGIN
-//DIR_AIDL_END
-            ]
-            assets.srcDirs = [
-                'assets'
-//DIR_ASSETS_BEGIN
-//DIR_ASSETS_END
-            ]
+            java.srcDirs = ['src']
+            res.srcDirs = ['res']
+            aidl.srcDirs = ['aidl']
+            assets.srcDirs = ['assets']
         }
-        debug.jniLibs.srcDirs = [
-            'libs/debug'
-//DIR_JNI_DEBUG_BEGIN
-//DIR_JNI_DEBUG_END
-        ]
-        release.jniLibs.srcDirs = [
-            'libs/release'
-//DIR_JNI_RELEASE_BEGIN
-//DIR_JNI_RELEASE_END
-        ]
+        debug.jniLibs.srcDirs = ['libs/debug']
+        release.jniLibs.srcDirs = ['libs/release']
     }
 
     applicationVariants.all { variant ->
@@ -120,6 +97,3 @@ android {
         }
     }
 }
-
-//CHUNK_GLOBAL_BEGIN
-//CHUNK_GLOBAL_END

platform/android/java/app/config.gradle

@@ -5,7 +5,8 @@ ext.versions = [
     targetSdk          : 29,
     buildTools         : '29.0.1',
     supportCoreUtils   : '28.0.0',
-    kotlinVersion      : '1.3.61'
+    kotlinVersion      : '1.3.61',
+    v4Support          : '28.0.0'
 
 ]
 
@@ -13,7 +14,8 @@ ext.libraries = [
     androidGradlePlugin: "com.android.tools.build:gradle:$versions.androidGradlePlugin",
     supportCoreUtils   : "com.android.support:support-core-utils:$versions.supportCoreUtils",
     kotlinGradlePlugin : "org.jetbrains.kotlin:kotlin-gradle-plugin:$versions.kotlinVersion",
-    kotlinStdLib       : "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$versions.kotlinVersion"
+    kotlinStdLib       : "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$versions.kotlinVersion",
+    v4Support          : "com.android.support:support-v4:$versions.v4Support"
 ]
 
 ext.getExportPackageName = { ->
@@ -25,3 +27,40 @@ ext.getExportPackageName = { ->
     }
     return appId
 }
+
+/**
+ * Parse the project properties for the 'custom_template_plugins' property and return
+ * their binaries for inclusion in the build dependencies.
+ *
+ * The listed plugins must have their binaries in the project plugins directory.
+ */
+ext.getGodotPluginsBinaries = { ->
+    String[] binDeps = []
+
+    // Retrieve the list of enabled plugins.
+    if (project.hasProperty("custom_template_plugins")) {
+        String pluginsList = project.property("custom_template_plugins")
+        if (pluginsList != null && !pluginsList.trim().isEmpty()) {
+            for (String plugin : pluginsList.split(",")) {
+                binDeps += plugin + "*.aar"
+            }
+        }
+    }
+
+    return binDeps
+}
+
+/**
+ * Parse the project properties for the 'custom_template_plugins_dir' property and return
+ * its value.
+ *
+ * The returned value is the directory containing user plugins.
+ */
+ext.getGodotPluginsDirectory = { ->
+    // The plugins directory is provided by the 'custom_template_plugins_dir' property.
+    String pluginsDir = project.hasProperty("custom_template_plugins_dir")
+        ? project.property("custom_template_plugins_dir")
+        : ""
+
+    return pluginsDir
+}