import the woofer

addons/godot_state_charts/utilities/debugger_history.gd

@@ -0,0 +1,58 @@
+const RingBuffer = preload("ring_buffer.gd")
+
+var _buffer:RingBuffer = null
+
+var _dirty:bool = false
+
+## Whether the history has changed since the full
+## history string was last requested.
+var dirty:bool:
+	get: return _dirty
+
+func _init(maximum_lines:int = 500):
+	_buffer = RingBuffer.new(maximum_lines)
+	_dirty = false
+
+
+## Sets the maximum number of lines to store in the history.
+## This will clear the history.
+func set_maximum_lines(maximum_lines:int) -> void:
+	_buffer.set_maximum_lines(maximum_lines)
+
+
+## Adds an item to the history list.
+func add_history_entry(frame:int, text:String) -> void:
+	_buffer.append("[%s]: %s \n" % [frame, text])
+	_dirty = true
+
+
+## Adds a transition to the history list.
+func add_transition(frame:int, name:String, from:String, to:String) -> void:
+	add_history_entry(frame, "[»] Transition: %s from %s to %s" % [name, from, to])
+
+
+## Adds an event to the history list.
+func add_event(frame:int, event:StringName) -> void:
+	add_history_entry(frame, "[!] Event received: %s" % event)
+
+
+## Adds a state entered event to the history list.
+func add_state_entered(frame:int, name:StringName) -> void:
+	add_history_entry(frame, "[>] Enter: %s" % name)
+
+
+## Adds a state exited event to the history list.
+func add_state_exited(frame:int, name:StringName) -> void:
+	add_history_entry(frame, "[<] Exit: %s" % name)
+
+
+## Clears the history.
+func clear() -> void:
+	_buffer.clear()
+	_dirty = true
+
+
+## Returns the full history as a string.
+func get_history_text() -> String:
+	_dirty = false
+	return _buffer.join()