The game logs into HORIZON_HOME and falls back to the player's own game folder when it is unset. Harnesses
that set only HORIZON_NO_AUDIO (and test_native_client, which set nothing) wrote logs, and on a world run
advancements, into ~/Library/Application Support/horizon.
lab.game_env gives every game a fresh HORIZON_HOME, HORIZON_LAUNCHER_HOME, XDG_DATA_HOME and XDG_CONFIG_HOME,
no audio and no launcher self-update; a folder the caller passes is kept. Every launcher of the game uses it,
parity.py gives each harness its own HORIZON_HOME, and tests/test_game_home.py fails for a script in tools/
that starts the game without it.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Save and Quit to Title kept boats, minecarts, armor stands, item frames,
paintings and other non-mob entities in memory. Opening the world again
loaded them from disk a second time and the next save wrote both copies,
so each reopen doubled them until the game crawled. Closing and opening a
world now let go of every entity of the level (MinecraftServer.stopServer
unloads them with the level). tools/test_world_reopen_parity.py reopens a
world three times and checks its minecarts stay the same.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Ludovic Marie