miggor-StreamGraph/classes/deck/nodes/array_get_index.gd

# (c) 2023-present Eroax
# (c) 2023-present Yagich
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
extends DeckNode


func _init() -> void:
	name = "Get Array Index"
	node_type = "array_get_index"
	description = "Returns an element from an array. 0-indexed."
	category = "general"

	add_input_port(
		DeckType.Types.ARRAY,
		"Array"
	)
	
	add_input_port(
		DeckType.Types.NUMERIC,
		"Index",
		"spinbox:unbounded"
	)
	
	add_output_port(
		DeckType.Types.ANY,
		"Values"
	)


func _value_request(on_port: int) -> Variant:
	var arr = request_value(0)
	if arr == null:
		DeckHolder.logger.log_node("Array index: Input array is null. Returning null.", Logger.LogType.ERROR)
		return null
	
	var idx := int(resolve_input_port_value(1))
	
	if idx < 0:
		idx = (arr as Array).size() + idx

	if idx >= (arr as Array).size():
		DeckHolder.logger.log_node("Array index: Index > size. Returning null.", Logger.LogType.ERROR)
		return null
	
	return arr[idx]