Initial commit

addons/simple_dialogue/scripts/stimeline.gd

@@ -0,0 +1,83 @@
+class_name STimeline
+
+export(String) var file_path = ""
+export(Array) var events = []
+
+var _event_stream = []
+var _pos_lifo = []
+var _event_lifo = []
+var _pos : int = 0
+var _yaml = preload("res://addons/godot-yaml/gdyaml.gdns").new()
+
+func _init(path : String):
+	var file : File = File.new()
+	if !file.file_exists(path):
+		push_error("Could not load timeline at path: %s" % path)
+		return
+	file_path = path
+	file.open(path, File.READ)
+	
+	var raw_data = _yaml.parse(file.get_as_text())
+	file.close()
+	
+	if not "apiVersion" in raw_data or raw_data["apiVersion"] != 1.0:
+		push_error("'%s' is using an outdated timeline!" % file_path)
+		return
+	if not "kind" in raw_data or raw_data["kind"] != "timeline":
+		push_error("'%s' is not a timeline!" % file_path)
+		return
+	if "events" in raw_data:
+		for event in raw_data["events"]:
+			var dialogue = SEvent.new(event)
+			events.push_back(dialogue)
+	else:
+		push_warning("'%s' timeline does not have any events!" % file_path)
+	
+	_event_stream = events
+	_pos = 0
+
+func get_cursor() -> int:
+	return _pos
+
+func seek(new_pos : int) -> void:
+	_pos = new_pos
+
+func get_event(offset : int = 0) -> SEvent:
+	if _pos + offset < len(_event_stream):
+		return _event_stream[_pos + offset]
+	return null
+
+func read() -> SEvent:
+	var event = get_event()
+	if event == null and len(_event_lifo) > 0:
+		_event_stream = _event_lifo.pop_back()
+		_pos = _pos_lifo.pop_back()
+		event = get_event()
+	_pos += 1
+	return event
+
+func get_choices() -> Array:
+	var choices = []
+	var event = get_event(-1)
+	if event:
+		for choice in event.choices : choices.append(choice.choice)
+	return choices
+
+func is_choice() -> bool:
+	return len(get_choices()) > 0
+
+func make_choice(choice : int) -> void:
+	var event = get_event(-1)
+	if not event:
+		push_error("Attempted to find choice at invalid event! Pos '%s' Event Stream: %s"
+			% [_pos, _event_stream])
+		return
+	if choice > len(event.choices):
+		push_error("Attempted to make an out of bounds choice! Timeline '%s': choice '%s' while expected size is '%s'"
+			% [self.file_path, choice, len(event.choices)])
+		return
+	var choice_obj : SChoice = event.choices[choice]
+	_event_lifo.push_back(_event_stream)
+	_event_stream = choice_obj.events
+	_pos_lifo.push_back(_pos)
+	_pos = 0