import com.nolimitscoaster.*;
import nlvm.math3d.*;

public class CarHandler implements TrackTriggerListener {

    private CarScript mainScript;
    private Simulator sim;
    private Coaster coaster;
    private Train train;
    private int carID;
    private SceneObject sco;

    private CarAction actions[];
    private int actionAmount;
    private int currentAction;

    private Matrix4x4f trainMatrix;

    //Action triggers
    private String action1TriggerName = "action1";
    private String action2TriggerName = "action2";
    private TrackTrigger action1Trigger;
    private TrackTrigger action2Trigger;

    //Animation directions
    private final int LEFT = 0;
    private final int RIGHT = 1;
    private final int FRONT = 2;
    private final int BACK = 3;

    public CarHandler(CarScript mainScript, Simulator sim, Coaster coaster, Train train, int carID) {
        this.mainScript = mainScript;
        this.sim = sim;
        this.coaster = coaster;
        this.train = train;
        this.carID = carID;

        actionAmount = 2;
        currentAction = 0;

        trainMatrix = new Matrix4x4f();

        sco = sim.getSceneObject("car" + carID);
        if (sco == null) {
            System.err.println("CarHandler: Can't find scene object car" + carID + "!");
            return;
        }

        action1Trigger = coaster.getTrackTrigger(action1TriggerName);
        if (action1Trigger == null) {
            System.err.println("CarHandler: Can't find trigger " + action1TriggerName + "!");
            return;
        }
        action1Trigger.addTrackTriggerListener(this);

        action2Trigger = coaster.getTrackTrigger(action2TriggerName);
        if (action2Trigger == null) {
            System.err.println("CarHandler: Can't find trigger " + action2TriggerName + "!");
            return;
        }
        action2Trigger.addTrackTriggerListener(this);
    }

    public void process(float tick) {
        train.getCarMatrix(0, trainMatrix);
        sco.setMatrix(trainMatrix);

        if (actions == null) {
            return;
        }

        for (int i = 0; i < actionAmount; i++) {
            if (actions[i] != null) {
                actions[i].process(tick);
            }
        }
    }

    public void start() {
        actions = new CarAction[actionAmount];
    }

    public void stop() {
        actions = null;
        currentAction = 0;
    }

    public Train getTrain() {
        return train;
    }

    public Simulator getSim() {
        return sim;
    }

    public SceneObject getSco() {
        return sco;
    }

    public void onTrainEntering(TrackTrigger trigger, Train train) {
        if (train != this.train) {
            return;
        }
        if (trigger == action1Trigger) {
            if (actions == null) {
                start();
            }

            actions[currentAction] = new CarAction(this, sim.getCurAbsSimulationTimeSec(), 3.f, LEFT);
            currentAction++;
        }

        if (trigger == action2Trigger) {
            actions[currentAction] = new CarAction(this, sim.getCurAbsSimulationTimeSec(), 3.f, RIGHT);
            currentAction++;
        }
    }

    public void onTrainLeaving(TrackTrigger trigger, Train train) {

    }
}