ensure BeehaveTree is available even if Godot class cache is broken, closes #409 (#426)

Author: bitbrain

addons/beehave/plugin.gd

@@ -4,6 +4,7 @@ extends EditorPlugin
 const BeehaveEditorDebugger := preload("debug/debugger.gd")
 var editor_debugger: BeehaveEditorDebugger
 var frames: RefCounted
+var _custom_types: Array[StringName] = []
 
 
 func _init():
@@ -33,7 +34,29 @@ func _enter_tree() -> void:
 	else:
 		frames = preload("debug/old_frames.gd").new()
 	add_debugger_plugin(editor_debugger)
+	_register_custom_types()
 
 
 func _exit_tree() -> void:
+	_unregister_custom_types()
 	remove_debugger_plugin(editor_debugger)
+
+
+func _register_custom_types() -> void:
+	# Some users report the script-class cache randomly missing BeehaveTree,
+	# which makes the editor return a null instance. Register the type manually
+	# so the node is still available even if the cache is broken.
+	var tree_script: Script = load("res://addons/beehave/nodes/beehave_tree.gd")
+	if tree_script == null:
+		push_warning("Beehave: failed to load BeehaveTree script; custom type not registered.")
+		return
+
+	var tree_icon: Texture2D = load("res://addons/beehave/icons/tree.svg")
+	add_custom_type("BeehaveTree", "Node", tree_script, tree_icon)
+	_custom_types.append(&"BeehaveTree")
+
+
+func _unregister_custom_types() -> void:
+	for type_name in _custom_types:
+		remove_custom_type(type_name)
+	_custom_types.clear()

addons/gdUnit4/GdUnitRunner.cfg

@@ -2991,4 +2991,4 @@
 		}
 	],
 	"version": "5.0"
-}
+}