Method showSnackbar

src/LAMAPFVisualizer.jsx:332–337

(color)

  }

  showSnackbar(color) {
    if (!this.state.isError) this.addAgent(color);
    this.setState({ snackbarOpen: true });
    setTimeout(() => this.setState({ isError: false }), 1200);
    this.emptyForm();
  }

  handleCloseSnackbar(event, reason) {
    if (reason === "clickaway") {