Add data-driven fish selection and catch showcase

collection/collection_log.gd

@@ -0,0 +1,17 @@
+class_name CollectionLog
+extends Node
+
+signal fish_discovered(fish_id: StringName)
+
+var _discovered: Dictionary[StringName, bool] = {}
+
+
+func has_discovered(fish_id: StringName) -> bool:
+	return not fish_id.is_empty() and _discovered.has(fish_id)
+
+
+func mark_discovered(fish_id: StringName) -> void:
+	if fish_id.is_empty() or has_discovered(fish_id):
+		return
+	_discovered[fish_id] = true
+	fish_discovered.emit(fish_id)