oop-labs-collection/labs/6/Dishwasher.java

/*
 * %W% %E% Dymik739
 * Email: dymik739@109.86.70.81
 *
 * Copyright (C) 2023 FIOT Dev Team
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

/**
 * Class which represents the behaviour of a dishwasher.
 *
 * @author Dymik739
 * @since 0.3
 */
public class Dishwasher extends Appliance {
    /** Defines power usage at different stages of washing dishes. */
    private float[] powerStates = {400f, 60f, 130f, 350f};

    /** Shows how much time should pass before switching to the next stage */
    private float nextPowerStateIn = 20f;

    /** Shows current stage the dishwasher is performing, -1 for none */
    private int currentState = -1;

    /**
     * Constructor for this class.
     *
     * @param plugged sets the starting power state of this device
     */
    public Dishwasher(boolean plugged) {
        super(plugged);
        super.setType("Dishwasher");
    }

    /**
     * Method for simulating the devices' behaviour.
     * Once started, it goes through every stage until it finishes washing
     * the dishes (every stage has it's own power usage level. After that,
     * it resets the device and turns it off automatically.
     *
     * @param seconds delta time to simulate for
     * @param ventRPM air flow created by the vent
     */
    public void step(float seconds, float ventRPM) {
        if (!super.getPowerState()) {
            return;
        }

        nextPowerStateIn -= seconds;

        if (nextPowerStateIn <= 0) {
            nextPowerStateIn += 20f;
            currentState++;
        }

        if (currentState > 3) {
            unplug();
        }
    }

    /**
     * Overridden method for turning on this device.
     * It automatically sets it to the correct stage and delay.
     */
    @Override
    public void plug() {
        super.plug();

        currentState = 0;
        nextPowerStateIn = 20f;
    }
    
    /**
     * Overridden method for turning this device off.
     * It automatically resets the current washing stage to -1.
     */
    @Override
    public void unplug() {
        super.unplug();

        currentState = -1;
    }

    /**
     * Method for calculating the power consumption of this device.
     * Power usage depends on the current washing stage.
     *
     * @return float showing current power consumption
     */
    public float getPowerConsumption() {
        if (super.getPowerState()) {
            return powerStates[currentState];
        } else {
            return 0f;
        }
    }

    /**
     * Method for printing this devices' object in a nice way.
     *
     * @return String containing text description of this devices' state
     */
    @Override
    public String toString() {
        return String.format("Dishwasher(%s, %4.1fW, %2.1fs)",
                super.getPowerState() ? "on" : "off", getPowerConsumption(),
                super.getPowerState()
                        ? (3 - currentState) * 20 + nextPowerStateIn
                        : 0f);
    }
}