medfall

commit 3cebd5f6f4e1e38aab47842ad84d97cb5d4aa142
parent 05a9ee7282295d3b0fded4a69e963b791b50e68c
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Thu Jul  6 21:47:55 +0300

Let the launcher update itself

Diffstat:
launcher/main.cc
 | 
13
+++++++++++++
1 file changed, 13 insertions(+), 0 deletions(-)
diff --git a/launcher/main.cc b/launcher/main.cc
@@ -34,6 +34,8 @@
 
 #include "libs/monocypher/monocypher.h"
 
+#include "libs/whereami/whereami.h"
+
 #if PLATFORM_WINDOWS
 #define GAME_BINARY "medfall.exe"
 #else
@@ -483,11 +485,22 @@ static WORK_QUEUE_CALLBACK( install_update ) {
 		manifest = updater->remote_manifest;
 	}
 
+	char launcher_path[ 1024 ];
+	int dirname_length;
+	int path_length = wai_getExecutablePath( launcher_path, sizeof( launcher_path ), &dirname_length );
+	launcher_path[ path_length ] = '\0';
+	const char * launcher_exe = launcher_path + dirname_length + 1;
+
 	for( const std::string & file_name : updated_files ) {
+		if( file_name == launcher_exe ) {
+			str< 1024 > old( "{}.old", launcher_path );
+			rename( launcher_path, old.c_str() );
+		}
 		recursive_mkdir( NULL, file_name.c_str() );
 		rename( ( "update/" + file_name ).c_str(), file_name.c_str() );
 	}
 
+
 	// TODO: remove update directory tree
 	// TODO: remove game files that are no longer needed