armory/blender/arm/logicnode/camera/LN_get_active_camera.py

from arm.logicnode.arm_nodes import *

class ActiveCameraNode(ArmLogicTreeNode):
    """Get the active camera of the active scene."""
    bl_idname = 'LNActiveCameraNode'
    bl_label = 'Get Active Camera'
    arm_version = 1

    def init(self, context):
        super(ActiveCameraNode, self).init(context)
        self.add_output('ArmNodeSocketObject', 'Object')

add_node(ActiveCameraNode, category=PKG_AS_CATEGORY)