} else if (type === 'decrease') {
                this.setState({current_level: this.state.current_level - 1 >= this.state.min_level ? this.state.current_level - 1 : this.state.min_level});
            } else if (type === 'max') {
                this.setState({current_level: this.state.max_level});
            } else if (type === 'min') {