stepmania: configure directories

hosts/common/programs/default.nix

@@ -53,6 +53,7 @@
     ./sfeed.nix
     ./splatmoji.nix
     ./steam.nix
+    ./stepmania.nix
     ./sublime-music.nix
     ./swaynotificationcenter.nix
     ./tangram.nix

hosts/common/programs/stepmania.nix

@@ -0,0 +1,27 @@
+# configuration:
+# - things like calibration data live in ~/.stepmania-5.1/Save/Preferences.ini
+# - GlobalOffsetSeconds = difference between audio and video delay.
+#   Hit F6 twice in-game to being auto calibration
+#   Usually the result will be negative (i.e. the higher the latency of the pad, the more negative the offset)
+# - SoundDevice: use pacmd list-sources and select alsa_output.pci-xxxxx
+# - VisualOffset: if video is coming LATE, then use a negative number
+#
+# songs/packs:
+# - find pad packs:
+#   - <https://docs.google.com/spreadsheets/d/1F1IURV1UAYiICTLhAOKIJfwUN1iG12ZOufHZuDKiP48/edit#gid=27038621>
+#   - https://www.reddit.com/r/Stepmania/comments/aku3lb/best_pad_packs_on_stepmaniaonlinenet_or_elsewhere/
+#   - https://fitupyourstyle.com/
+#     allows search by difficulty
+# - dl packs from <https://stepmaniaonline.net>
+{ ... }:
+{
+  sane.programs.stepmania = {
+    persist.plaintext = [
+      ".stepmania-5.1/Cache"  #< otherwise gotta index all the songs every launch
+      ".stepmania-5.1/Save"
+    ];
+    fs.".stepmania-5.1/Courses".symlink.target = "/mnt/servo-media/games/stepmania/Courses";
+    fs.".stepmania-5.1/Songs".symlink.target = "/mnt/servo-media/games/stepmania/Songs";
+    # TODO: setup ~/.stepmania-5.1/Themes
+  };
+}