Single player campaigns no longer work

[Tino]

If i do try to start a single player game campaign mission with current trunk, i get the following error:

This is Widelands Version unofficial-git-b'668f793e4e' (Release)
Set home directory: C:\Users\x.xxx\.widelands
Adding directory: c:\data\git\widelands\data
selected language: (system language)
Graphics: Try to set Videomode 800x600
Graphics: OpenGL: Version "4.5.0 - Build 25.20.100.6576"
Graphics: SDL_GL_RED_SIZE is 8
Graphics: SDL_GL_GREEN_SIZE is 8
Graphics: SDL_GL_BLUE_SIZE is 8
Graphics: SDL_GL_ALPHA_SIZE is 8
Graphics: SDL_GL_BUFFER_SIZE is 32
Graphics: SDL_GL_DOUBLEBUFFER is 1
Graphics: SDL_GL_DEPTH_SIZE is 16
Graphics: SDL_GL_STENCIL_SIZE is 0
Graphics: SDL_GL_ACCUM_RED_SIZE is 16
Graphics: SDL_GL_ACCUM_GREEN_SIZE is 16
Graphics: SDL_GL_ACCUM_BLUE_SIZE is 16
Graphics: SDL_GL_ACCUM_ALPHA_SIZE is 16
Graphics: SDL_GL_STEREO is 0
Graphics: SDL_GL_MULTISAMPLEBUFFERS is 0
Graphics: SDL_GL_MULTISAMPLESAMPLES is 0
Graphics: SDL_GL_ACCELERATED_VISUAL is 1
Graphics: SDL_GL_CONTEXT_MAJOR_VERSION is 2
Graphics: SDL_GL_CONTEXT_MINOR_VERSION is 1
Graphics: SDL_GL_CONTEXT_FLAGS is 0
Graphics: SDL_GL_CONTEXT_PROFILE_MASK is 0
Graphics: SDL_GL_SHARE_WITH_CURRENT_CONTEXT is 0
Graphics: SDL_GL_FRAMEBUFFER_SRGB_CAPABLE is 0
Graphics: OpenGL: Double buffering enabled
Graphics: OpenGL: Max texture size: 16384
Graphics: OpenGL: ShadingLanguage: "4.50 - Build 25.20.100.6576"
**** GRAPHICS REPORT ****
 VIDEO DRIVER windows
 pixel fmt 370546692
 size 800 600
**** END GRAPHICS REPORT ****
Style Manager: Reading style templates took 6ms
**** SOUND REPORT ****
SDL version: 2.0.9
SDL_mixer version: 2.0.4
**** END SOUND REPORT ****
Initializing economy serial
There's no configuration file, using default values.
lastserial: 0

Unexpected error during the game
RealFSImpl::write: could not open file for writing: C:\Users\x.xxx\.widelands\save\campaigns.conf

My userdir "x.xxx" does contain a dot, but this seems no problem when saving/loading/viewing replays or saving the config.
I think there were some changes recently to change how widelands handles which missions are available and the missing file "campaigns.conf" became obsolete? But i cannot find the commit....

[Tino (tino79)]

It is missing a check if the save directory already exists:

 src/ui_fsmenu/campaigns.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/ui_fsmenu/campaigns.cc b/src/ui_fsmenu/campaigns.cc
index 1a84f5aeb9..5b96ca98e1 100644
--- a/src/ui_fsmenu/campaigns.cc
+++ b/src/ui_fsmenu/campaigns.cc
@@ -37,6 +37,7 @@ const std::string kCampVisFileLegacy = "save/campvis";
 Campaigns::Campaigns() {
  // Load solved scenarios
  std::unique_ptr<Profile> campvis;
+ g_fs->ensure_directory_exists(kSaveDir);
  if (!(g_fs->file_exists(kCampVisFile))) {
   // There is no campaigns.conf file - create one.
   campvis.reset(new Profile(kCampVisFile.c_str()));

[Tino (tino79)]

Migrated to https://github.com/widelands/widelands/issues/3455