Add a POSIX shell script for renaming the full game levels to the new…

… names.

rename-levels.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+if [[ -z "$1" ]]; then
+	echo "A directory must be given" >&2
+	exit 1
+fi
+
+cd "$1/level"
+mv racing.lvl 2racing1.lvl
+
+for X in "bathhouse sumo" "field football" "amber greed" "fight duel" "colvs collection" dragster; do
+	OLD="${X% *}"
+	NEW="${X#* }"
+
+	for N in "" 2 3 4; do
+		mv "${OLD}${N}.lvl" "2${NEW}${N:-1}.lvl"
+	done
+done
+
+for X in "bath sumo" "field football"; do
+	OLD="${X% *}"
+	NEW="${X#* }"
+
+	for N in "" 2; do
+		mv "4${OLD}${N}.lvl" "4${NEW}${N:-1}.lvl"
+	done
+done
+
+exit 0