Rename the game to Emberwild (data copied from the old folder)

scripts/core/boot.gd

@@ -0,0 +1,52 @@
+extends Node
+## Autoload "Boot", first in the list: one-off start-up housekeeping that has
+## to happen before anything reads user://.
+##
+## The game was called "Valheimlike" until it became "Emberwild". Godot names
+## the user-data folder after the project, so the rename moved it from
+## .../app_userdata/Valheimlike to .../app_userdata/Emberwild. The first time
+## Emberwild starts, this copies saved worlds, your identity (key, name, look)
+## and server settings across. It copies rather than moves, so the old folder
+## stays as a backup, and it never overwrites anything already in the new
+## folder. Test folders (test_*) and logs are skipped.
+
+const OLD_NAME := "Valheimlike"
+const MARKER := "migrated_from_valheimlike.txt"
+const SKIP := ["logs", "shader_cache", "vulkan", "test_worlds", "test_net"]
+
+var copied := 0
+
+func _enter_tree() -> void:
+	migrate_user_data()
+
+## Returns the number of files copied (0 if there was nothing to do).
+func migrate_user_data() -> int:
+	var new_dir := OS.get_user_data_dir()
+	var old_dir := new_dir.get_base_dir().path_join(OLD_NAME)
+	if new_dir == old_dir or not DirAccess.dir_exists_absolute(old_dir):
+		return 0
+	if FileAccess.file_exists(new_dir.path_join(MARKER)):
+		return 0
+	copied = 0
+	_copy_tree(old_dir, new_dir)
+	var f := FileAccess.open(new_dir.path_join(MARKER), FileAccess.WRITE)
+	if f != null:
+		f.store_string("Copied %d files from %s on %s. The old folder was left as it was.\n" % [
+			copied, old_dir, Time.get_datetime_string_from_system()])
+	if copied > 0:
+		print("[boot] moved to the new name: copied %d files from %s" % [copied, old_dir])
+	return copied
+
+func _copy_tree(from: String, to: String) -> void:
+	DirAccess.make_dir_recursive_absolute(to)
+	var da := DirAccess.open(from)
+	if da == null:
+		return
+	for f in da.get_files():
+		var dst := to.path_join(f)
+		if not FileAccess.file_exists(dst) and DirAccess.copy_absolute(from.path_join(f), dst) == OK:
+			copied += 1
+	for d in da.get_directories():
+		if d in SKIP or d.begins_with("test_"):
+			continue
+		_copy_tree(from.path_join(d), to.path_join(d))