feat: generate world-backed situations and commitments

simulation/situations/QuestJournalSystem.gd

@@ -0,0 +1,117 @@
+class_name QuestJournalSystem
+extends RefCounted
+
+var _entries_by_id: Dictionary = {}
+var _entry_id_by_situation: Dictionary = {}
+var _next_entry_id := 0
+
+
+func add_situation(
+	situation: SituationStateRecord,
+	definition: SituationDefinition,
+	alternative_id: StringName,
+	current_tick: int
+) -> QuestJournalEntryStateRecord:
+	if (
+		situation == null
+		or definition == null
+		or not situation.is_active()
+		or situation.get_definition_id() != definition.situation_definition_id
+		or definition.get_alternative(alternative_id) == null
+		or current_tick < situation.get_created_tick()
+		or _entry_id_by_situation.has(situation.get_situation_id())
+		or not situation.select_alternative(alternative_id)
+	):
+		return null
+	var entry := QuestJournalEntryStateRecord.create(
+		_next_entry_id,
+		situation.get_situation_id(),
+		definition.situation_definition_id,
+		current_tick,
+		alternative_id
+	)
+	_entries_by_id[_next_entry_id] = entry
+	_entry_id_by_situation[situation.get_situation_id()] = _next_entry_id
+	_next_entry_id += 1
+	return entry
+
+
+func synchronize(
+	situation: SituationStateRecord, current_tick: int
+) -> QuestJournalEntryStateRecord:
+	if situation == null:
+		return null
+	var entry := get_for_situation(situation.get_situation_id())
+	if entry == null or not entry.is_active() or situation.is_active():
+		return null
+	var status := QuestJournalEntryStateRecord.STATUS_ARCHIVED
+	if situation.get_status() == SituationStateRecord.STATUS_RESOLVED:
+		status = QuestJournalEntryStateRecord.STATUS_COMPLETED
+	elif situation.get_status() == SituationStateRecord.STATUS_EXPIRED:
+		status = QuestJournalEntryStateRecord.STATUS_FAILED
+	return entry if entry.close(status, current_tick) else null
+
+
+func derive_progress(
+	entry: QuestJournalEntryStateRecord,
+	situation_system: SituationSystem,
+	world_events: WorldEventStore,
+	state_facts: Dictionary
+) -> SituationProgressSnapshot:
+	if entry == null or situation_system == null:
+		return SituationProgressSnapshot.new()
+	return situation_system.derive_progress(
+		situation_system.get_by_id(entry.get_situation_id()),
+		world_events,
+		state_facts,
+		entry.get_selected_alternative_id()
+	)
+
+
+func restore(records: Array[QuestJournalEntryStateRecord], restored_next_id: int) -> bool:
+	var by_id: Dictionary = {}
+	var by_situation: Dictionary = {}
+	var next_id := maxi(restored_next_id, 0)
+	for record in records:
+		if (
+			record == null
+			or by_id.has(record.get_entry_id())
+			or by_situation.has(record.get_situation_id())
+		):
+			return false
+		by_id[record.get_entry_id()] = record
+		by_situation[record.get_situation_id()] = record.get_entry_id()
+		next_id = maxi(next_id, record.get_entry_id() + 1)
+	_entries_by_id = by_id
+	_entry_id_by_situation = by_situation
+	_next_entry_id = next_id
+	return true
+
+
+func get_by_id(entry_id: int) -> QuestJournalEntryStateRecord:
+	return _entries_by_id.get(entry_id) as QuestJournalEntryStateRecord
+
+
+func get_for_situation(situation_id: int) -> QuestJournalEntryStateRecord:
+	if not _entry_id_by_situation.has(situation_id):
+		return null
+	return get_by_id(int(_entry_id_by_situation[situation_id]))
+
+
+func get_all_sorted() -> Array[QuestJournalEntryStateRecord]:
+	var records: Array[QuestJournalEntryStateRecord] = []
+	for record in _entries_by_id.values():
+		records.append(record)
+	records.sort_custom(
+		func(first: QuestJournalEntryStateRecord, second: QuestJournalEntryStateRecord) -> bool:
+			return first.get_entry_id() < second.get_entry_id()
+	)
+	return records
+
+
+func get_active_sorted() -> Array[QuestJournalEntryStateRecord]:
+	var records: Array[QuestJournalEntryStateRecord] = []
+	for record in get_all_sorted():
+		if record.is_active():
+			records.append(record)
+	return records