Added optional gamemode support.

.install/FreeDoom.sh

@@ -1,3 +1,4 @@
+# shellcheck shell=bash disable=SC2154  # Variables are set by linux-game-manager.sh
 tobyVersion="9.0"
 mkdir -p "${installPath}/doom"
 doomPath="$(find /usr/share -type d -name "doom" 2> /dev/null)"
@@ -19,7 +20,7 @@ fi
 doomPath="$(find /usr/share -type d -name "doom" 2> /dev/null | head -1)"
 # The url breaks the normal download function
 download_named "keyshare-universal.pk3" "https://forum.zdoom.org/download/file.php?id=42262"
-download "${ipfsGateway}/ipfs/QmU6REFot8CGVSBy2YWQxnmXoh7M4EF74RxFtLzvtJxoGC?filename=toby_doom_${tobyVersion}_full.zip"
+download "${ipfs[FreeDoom]}"
 unzip -n -d "${installPath}/doom" "${cache}/toby_doom_${tobyVersion}_full.zip"
 # Move contents from nested folder up one directory (including hidden files)
 shopt -s dotglob