// initial import
import com.nolimitscoaster.*;

public class LightTrigger extends Script implements TrackTriggerListener
{
    /*
    * declaring name of triggers
    * replace what is in the quotes in the four lines below with the corresponding names
    */
    private static final String enterTriggerName = "name of enter trigger";
    private static final String exitTriggerName = "name of exit trigger";
    private static final String sceneObjectName = "name of scene object";
    private static final String lightName = "name of scene object";

    // instintiating TrackTrigger class
    private TrackTrigger enterTrigger;
    private TrackTrigger exitTrigger;

    // instintiating SceneObjects class
    private SceneObject sco;
    private SceneObjectElement ObjetLight;
    private SceneObjectLight spotLight;

    public bool onInit()
    {
        // error handling
        Coaster coaster = sim.getCoasterForEntityId(getParentEntityId());
        if (coaster == null)
        {
            System.err.println("This script must be attached to a coaster");
            return false;
        }

        enterTrig = coaster.getTrackTrigger(enterTriggerName);
        if (enterTrig == null)
        {
            System.err.println("TrackTrigger not found: '" + enterTriggerName + "'");
            return false;
        }

        enterTrig.addTrackTriggerListener(this);

        exitTrigger = coaster.getTrackTrigger(exitTriggerName);
        if (exitTrigger == null)
        {
            System.err.println("TrackTrigger not found: '" + exitTriggerName + "'");
            return false;
        }

        exitTrigger.addTrackTriggerListener(this);


        sco = sim.getSceneObject(sceneObjectName);
        if (sco == null)
        {
            System.err.println(scriptName + " is not in a scene object");
            return false;
        }

        spotLight = sco.getLightForName(lightName);
        if (spotLight == null)
        {
            System.err.println("No light named '" + lightName + "'' was found.");
            return false;
        }
        spotLight.setEnabled(false);

        return true;
    }

    public void onNextFrame(float fTickTime)
    {
    // do nothing
    }

    public void onTrainEntering(TrackTrigger trigger, Train train)
    {
    if (trigger == enterTrig)
    {
        // lights are enabled
        spotLight.setEnabled(true);
    } else if (trigger == exitTrigger) {
        // lights disable
        spotLight.setEnabled(false);
    }

    }
    public void onTrainLeaving(TrackTrigger trigger, Train train)
    {
    // do nothing
    }
}