Initial commit

singletons/Quest.gd

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+extends Node
+
+"""
+Minimal quest system implementation.
+
+A dictionary where each string key represents a quest and an int value represanting a status
+"""
+
+enum STATUS { NONEXISTENT, STARTED, COMPLETE, FAILED }
+
+
+# Emitted whenever a quests changes. It'll pass the quest name and new status
+signal quest_changed(quest_name, status)
+
+var quest_list = {}
+
+# Get the status of a quest. If it's not found it returns STATUS.NONEXISTENT
+func get_status(quest_name:String) -> int:
+	if quest_list.has(quest_name):
+		return quest_list[quest_name]
+	else:
+		return STATUS.NONEXISTENT
+
+
+func get_status_as_text(quest_name:String) -> int:
+	var status = get_status(quest_name)
+	return STATUS.keys()[status]
+
+
+# Change the state of some quest. status should be Quests.STATUS.<some status>
+func change_status(quest_name:String, status:int) -> bool:
+	if quest_list.has(quest_name):
+		quest_list[quest_name] = status
+		emit_signal("quest_changed", quest_name, status)
+		return true
+	else:
+		return false
+
+
+# Start a new quest
+func accept_quest(quest_name:String) -> bool:
+	if quest_list.has(quest_name):
+		return false
+	else:
+		quest_list[quest_name] = STATUS.STARTED
+		emit_signal("quest_changed", quest_name, STATUS.STARTED)
+		return true
+
+
+# List all the quest in a certain status
+func list(status:int) -> Array:
+	if status == -1:
+		return quest_list.keys()
+	var result = []
+	for quest in quest_list.keys():
+		if quest_list[quest] == status:
+			result.append(quest)
+	return result
+
+
+func get_quest_list() -> Dictionary:
+	return quest_list.duplicate()
+
+
+# Remove a quest from the list of quests
+func remove_quest(quest_name:String) -> bool:
+	if quest_list.has(quest_name):
+		quest_list.erase(quest_name)
+		emit_signal("quest_changed", quest_name, STATUS.NONEXISTENT)
+		return true
+	else:
+		return false
+