Add lever and jump pad components with activation logic

addons/rmsmartshape/actions/action_open_shape.gd

@@ -0,0 +1,31 @@
+extends SS2D_Action
+
+## ActionOpenShape
+
+var _shape: SS2D_Shape
+var _cut_idx: int
+var _closing_key: int
+
+
+func _init(shape: SS2D_Shape, edge_start_key: int) -> void:
+	_shape = shape
+	_cut_idx = shape.get_point_index(edge_start_key)
+
+
+func get_name() -> String:
+	return "Open Shape"
+
+
+func do() -> void:
+	_shape.begin_update()
+	var last_idx: int = _shape.get_point_count() - 1
+	_closing_key = _shape.get_point_key_at_index(last_idx)
+	_shape.open_shape_at_edge(_cut_idx)
+	_shape.end_update()
+
+
+func undo() -> void:
+	_shape.begin_update()
+	_shape.undo_open_shape_at_edge(_cut_idx, _closing_key)
+	_shape.end_update()
+