In version 1.9.10 we are taking concrete steps forward in pursuit of several long-term objectives. A guiding principle has been to bring a new level of clarity into the internal structure of the engine while also preparing the next-generation incarnations of key subsystems: file system, resource management, and scripting. This means, though, that the number of visible changes is still significantly smaller than the number of internal changes. We hope that this is soon changing as the pieces are now falling into place for us to start addressing UI and graphics related issues.

The work we9;ve done in this release illustrates our strategy for realizing Doomsday 2: instead of attempting to rewrite everything at once — and getting hopelessly bogged down with the massive workload — we are upgrading subsystems gradually, during many small iterations.

End of jDoom/jHeretic/jHexen. We9;ve made a fundamental change regarding game plugins. We are now using the main Doomsday version number (1.9.10) for all of the “official” game plugins (libdoom, libheretic, libhexen). This effectively marks the end of jDoom and the other j-ports — they have been finally fully demoted from individual ports to mere plugins for Doomsday. However, we will continue supporting the j-prefixed names inside resource packages for backwards compatibility.

• The longstanding gameplay bug that prevented a column from lowering on Doom E1M7 has now been fixed. 861
• On Linux, the FluidSynth audio plugin no longer requires FMOD to play music; it can send music directly to the audio output.
• Command-line tools for creating and editing data files (md2tool, wadtool, texc) are now included as part of the distribution packages. (Note: wadtool is only available for Windows in this release.)
• Bug fixes and stability improvements.

Completed:

• fluid_synth_for_midi_playback: use system-wide libfluidsynth on Unix (pulseaudio)
• remove_obsolete_j-prefixes_of_the_game_plugins

Progressed:

• doomsday_script: merge Haw script interpreter from Hawthorn, native functions, Config.de, begun building the standard_library
• modularize_engine_codebase: regrouped engine sources by domain
• refactor_engine_into_a_shared_library: relocated fixed-point math, Animator, Point, Rect, Size, StringArray and timer to libdeng1, PathTree and json moved to libdeng2
• internal_file_system: refactoring FS1 and dependent code towards the libdeng2 FS in preparation of an eventual merge/replacement; added persist.pack
• Began work on unicode_strings: many parts of the engine9;s internal file system have been revised to use Unicode text (but full Unicode support isn9;t working yet)
• Stage 1 of drop_snowberry: remove display config options as these are handled by the engine itself

}}

If you are upgrading an existing installation of Doomsday, note the following:

• Your automatic update preferences, main window position, and display mode will be reset to the default settings. This information is no longer stored in the system registry (on Windows) or other system-provided configuration files. Instead, it is saved in persist.pack in your runtime_folder.
• The default display mode is now your desktop resolution. (Previously it has been 640 x 480.)

• Closed bugs for the 1.9.10 milestone
• Known issues: list of open bugs in the Bug Tracker

• detailed_list_of_changes_in_doomsday_version_1.9.10