OSX export: Default to fat format, make it an enum

Since we want to distribute only the fat binary in the official templates, this should
make it work out of the box. 32 bits and 64 bits options are still available for people
that want them, but will throw an error if the binaries are not in the template zip.

platform/osx/export/export.cpp

@@ -48,6 +48,11 @@ class EditorExportPlatformOSX : public EditorExportPlatform {
 	String custom_release_package;
 	String custom_debug_package;
 
+	enum BitsMode {
+		BITS_FAT,
+		BITS_64,
+		BITS_32
+	};
 
 	int version_code;
 
@@ -59,8 +64,7 @@ class EditorExportPlatformOSX : public EditorExportPlatform {
 	String version;
 	String signature;
 	String copyright;
-	bool use64;
-	bool useFat;
+	BitsMode bits_mode;
 	bool high_resolution;
 
 	Ref<ImageTexture> logo;
@@ -83,7 +87,7 @@ public:
 
 
 	virtual bool poll_devices() { return false;}
-	virtual int get_device_count() const { return 0; };
+	virtual int get_device_count() const { return 0; }
 	virtual String get_device_name(int p_device) const  { return String(); }
 	virtual String get_device_info(int p_device) const { return String(); }
 	virtual Error run(int p_device,int p_flags=0);
@@ -122,10 +126,8 @@ bool EditorExportPlatformOSX::_set(const StringName& p_name, const Variant& p_va
 		version=p_value;
 	else if (n=="application/copyright")
 		copyright=p_value;
-	else if (n=="application/64_bits")
-		use64=p_value;
-	else if (n=="application/fat_bits")
-		useFat=p_value;
+	else if (n=="application/bits_mode")
+		bits_mode=BitsMode(int(p_value));
 	else if (n=="display/high_res")
 		high_resolution=p_value;
 	else
@@ -158,10 +160,8 @@ bool EditorExportPlatformOSX::_get(const StringName& p_name,Variant &r_ret) cons
 		r_ret=version;
 	else if (n=="application/copyright")
 		r_ret=copyright;
-	else if (n=="application/64_bits")
-		r_ret=use64;
-	else if (n=="application/fat_bits")
-		r_ret=useFat;
+	else if (n=="application/bits_mode")
+		r_ret=bits_mode;
 	else if (n=="display/high_res")
 		r_ret=high_resolution;
 	else
@@ -182,13 +182,9 @@ void EditorExportPlatformOSX::_get_property_list( List<PropertyInfo> *p_list) co
 	p_list->push_back( PropertyInfo( Variant::STRING, "application/short_version") );
 	p_list->push_back( PropertyInfo( Variant::STRING, "application/version") );
 	p_list->push_back( PropertyInfo( Variant::STRING, "application/copyright") );
-	p_list->push_back( PropertyInfo( Variant::BOOL, "application/64_bits") );
-	p_list->push_back( PropertyInfo( Variant::BOOL, "application/fat_bits") );
+	p_list->push_back( PropertyInfo( Variant::INT, "application/bits_mode", PROPERTY_HINT_ENUM, "Fat (32 & 64 bits),64 bits,32 bits") );
 	p_list->push_back( PropertyInfo( Variant::BOOL, "display/high_res") );
 
-
-	//p_list->push_back( PropertyInfo( Variant::INT, "resources/pack_mode", PROPERTY_HINT_ENUM,"Copy,Single Exec.,Pack (.pck),Bundles (Optical)"));
-
 }
 
 void EditorExportPlatformOSX::_make_icon(const Image& p_icon,Vector<uint8_t>& icon) {
@@ -321,7 +317,8 @@ Error EditorExportPlatformOSX::export_project(const String& p_path, bool p_debug
 	io2.opaque=&dst_f;
 	zipFile	dpkg=zipOpen2(p_path.utf8().get_data(),APPEND_STATUS_CREATE,NULL,&io2);
 
-	String binary_to_use="godot_osx_"+String(p_debug?"debug":"release")+"."+String(useFat?"fat":use64?"64":"32");
+	String binary_to_use = "godot_osx_" + String(p_debug ? "debug" : "release") + ".";
+	binary_to_use += String(bits_mode==BITS_FAT ? "fat" : bits_mode==BITS_64 ? "64" : "32");
 
 	print_line("binary: "+binary_to_use);
 	String pkg_name;
@@ -333,6 +330,8 @@ Error EditorExportPlatformOSX::export_project(const String& p_path, bool p_debug
 		pkg_name="Unnamed";
 
 
+	bool found_binary = false;
+
 	while(ret==UNZ_OK) {
 
 		//get filename
@@ -366,6 +365,7 @@ Error EditorExportPlatformOSX::export_project(const String& p_path, bool p_debug
 				ret = unzGoToNextFile(pkg);
 				continue; //ignore!
 			}
+			found_binary = true;
 			file="Contents/MacOS/"+pkg_name;
 		}
 
@@ -420,6 +420,13 @@ Error EditorExportPlatformOSX::export_project(const String& p_path, bool p_debug
 		ret = unzGoToNextFile(pkg);
 	}
 
+	if (!found_binary) {
+		ERR_PRINTS("Requested template binary '"+binary_to_use+"' not found. It might be missing from your template archive.");
+		zipClose(dpkg,NULL);
+		unzClose(pkg);
+		return ERR_FILE_NOT_FOUND;
+	}
+
 
 	ep.step("Making PKG",1);
 
@@ -487,13 +494,12 @@ EditorExportPlatformOSX::EditorExportPlatformOSX() {
 	logo = Ref<ImageTexture>( memnew( ImageTexture ));
 	logo->create_from_image(img);
 
-	info="This Game is Nice";
-	identifier="com.godot.macgame";
+	info="Made with Godot Engine";
+	identifier="org.godotengine.macgame";
 	signature="godotmacgame";
 	short_version="1.0";
 	version="1.0";
-	use64=false;
-	useFat=false;
+	bits_mode=BITS_FAT;
 	high_resolution=false;
 
 }