Add ArgumentParser

	Streamlines parsing of commandline arguments
	Arguments reside in ProjectSettings as `openvic2/data/arguments` as a dictionary
		The dictionary's key is the option name
		The dictionary is set with default values
	This enables project setting overrides for arguments (user specified arguments take priority)

Add help commandline option
Prepare for removal of GameDebug.gd
Add game project description

1 files changed, 60 insertions, 0 deletions

diff --git a/game/src/ArgumentOption.gd b/game/src/ArgumentOption.gd
new file mode 100644
index 0000000..f14cef0
--- /dev/null
+++ b/game/src/ArgumentOption.gd
@@ -0,0 +1,60 @@
+@tool
+class_name ArgumentOption
+extends Resource
+
+@export var name : StringName
+@export var aliases : Array[StringName] = []
+@export var type : Variant.Type :
+	get: return type
+	set(v):
+		type = v
+		match v:
+			TYPE_BOOL: default_value = false
+			TYPE_INT: default_value = 0
+			TYPE_FLOAT: default_value = 0.0
+			TYPE_STRING: default_value = ""
+			TYPE_STRING_NAME: default_value = &""
+			TYPE_COLOR: default_value = Color()
+			_: default_value = null
+		notify_property_list_changed()
+var default_value
+@export var description : String
+
+func _init(_name = "",  _type = TYPE_NIL, _description = "", default = null):
+	name = _name
+	type = _type
+	if default != null and typeof(default) == type:
+		default_value = default
+	description = _description
+
+func add_alias(alias : StringName) -> ArgumentOption:
+	aliases.append(alias)
+	return self
+
+func get_type_string() -> StringName:
+	match type:
+		TYPE_NIL: return "null"
+		TYPE_BOOL: return "boolean"
+		TYPE_INT: return "integer"
+		TYPE_FLOAT: return "float"
+		TYPE_STRING, TYPE_STRING_NAME: return "string"
+		TYPE_COLOR: return "color"
+	return "<invalid type>"
+
+func _get(property):
+	if property == "default_value": return default_value
+
+func _set(property, value):
+	if property == "default_value":
+		default_value = value
+		return true
+
+func _get_property_list():
+	var properties := []
+
+	properties.append({
+		"name": "default_value",
+		"type": type
+	})
+
+	return properties