ARKit for Godot 3.2

This PR introduces support for ARKit to the iOS version of Godot.
ARKit is Apples Augmented Reality platform.
This PR brings in support for ARKit 1.0 and implements a few ARKit 2.0 features.
It requires iOS 11 to run but should not prevent Godot from running on older versions as long as ARKit remains unused.

1 files changed, 25 insertions, 4 deletions

diff --git a/platform/iphone/export/export.cpp b/platform/iphone/export/export.cpp
index b2064472e4..a9daa6ea5f 100644
--- a/platform/iphone/export/export.cpp
+++ b/platform/iphone/export/export.cpp
@@ -95,7 +95,7 @@ class EditorExportPlatformIOS : public EditorExportPlatform {
 	Vector<ExportArchitecture> _get_supported_architectures();
 	Vector<String> _get_preset_architectures(const Ref<EditorExportPreset> &p_preset);
 
-	void _add_assets_to_project(Vector<uint8_t> &p_project_data, const Vector<IOSExportAsset> &p_additional_assets);
+	void _add_assets_to_project(const Ref<EditorExportPreset> &p_preset, Vector<uint8_t> &p_project_data, const Vector<IOSExportAsset> &p_additional_assets);
 	Error _export_additional_assets(const String &p_out_dir, const Vector<String> &p_assets, bool p_is_framework, Vector<IOSExportAsset> &r_exported_assets);
 	Error _export_additional_assets(const String &p_out_dir, const Vector<SharedObject> &p_libraries, Vector<IOSExportAsset> &r_exported_assets);
 
@@ -656,7 +656,7 @@ struct ExportLibsData {
 	String dest_dir;
 };
 
-void EditorExportPlatformIOS::_add_assets_to_project(Vector<uint8_t> &p_project_data, const Vector<IOSExportAsset> &p_additional_assets) {
+void EditorExportPlatformIOS::_add_assets_to_project(const Ref<EditorExportPreset> &p_preset, Vector<uint8_t> &p_project_data, const Vector<IOSExportAsset> &p_additional_assets) {
 	Vector<Ref<EditorExportPlugin> > export_plugins = EditorExport::get_singleton()->get_export_plugins();
 	Vector<String> frameworks;
 	for (int i = 0; i < export_plugins.size(); ++i) {
@@ -714,7 +714,28 @@ void EditorExportPlatformIOS::_add_assets_to_project(Vector<uint8_t> &p_project_
 
 	// Note, frameworks like gamekit are always included in our project.pbxprof file
 	// even if turned off in capabilities.
-	// Frameworks that are used by modules (like arkit) we may need to optionally add here.
+
+	// We do need our ARKit framework
+	if ((bool)p_preset->get("capabilities/arkit")) {
+		String build_id = (++current_id).str();
+		String ref_id = (++current_id).str();
+
+		if (pbx_frameworks_build.length() > 0) {
+			pbx_frameworks_build += ",\n";
+			pbx_frameworks_refs += ",\n";
+		}
+
+		pbx_frameworks_build += build_id;
+		pbx_frameworks_refs += ref_id;
+
+		Dictionary format_dict;
+		format_dict["build_id"] = build_id;
+		format_dict["ref_id"] = ref_id;
+		format_dict["name"] = "ARKit.framework";
+		format_dict["file_path"] = "System/Library/Frameworks/ARKit.framework";
+		format_dict["file_type"] = "wrapper.framework";
+		pbx_files += file_info_format.format(format_dict, "$_");
+	}
 
 	String str = String::utf8((const char *)p_project_data.ptr(), p_project_data.size());
 	str = str.replace("$additional_pbx_files", pbx_files);
@@ -1045,7 +1066,7 @@ Error EditorExportPlatformIOS::export_project(const Ref<EditorExportPreset> &p_p
 	print_line("Exporting additional assets");
 	Vector<IOSExportAsset> assets;
 	_export_additional_assets(dest_dir + binary_name, libraries, assets);
-	_add_assets_to_project(project_file_data, assets);
+	_add_assets_to_project(p_preset, project_file_data, assets);
 	String project_file_name = dest_dir + binary_name + ".xcodeproj/project.pbxproj";
 	FileAccess *f = FileAccess::open(project_file_name, FileAccess::WRITE);
 	if (!f) {