Reloads the currently active scene.
Returns constantOK on success, constantERR_UNCONFIGURED if no currentScene was defined yet, constantERR_CANT_OPEN if currentScene cannot be loaded into a PackedScene, or constantERR_CANT_CREATE if the scene cannot be instantiated.
Reloads the currently active scene. Returns constant OK on success, constant ERR_UNCONFIGURED if no currentScene was defined yet, constant ERR_CANT_OPEN if currentScene cannot be loaded into a PackedScene, or constant ERR_CANT_CREATE if the scene cannot be instantiated.