package class8_1_SimplifiedTourists_BinaryIO_inClass_start;

import javafx.geometry.Point2D;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;

import java.io.DataOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class Person extends MobileEntity {
    public static final int PERSON_MAX_SPEED = 2;
    private Goal goal;

    public Person(Goal goal, double x, double y) {
        super(x,y);
        setName("You");
        stepSize = new Point2D(0,0);
        this.goal = goal;
    }

    @Override
    protected void step() {
        Point2D direction = goal.getTarget().subtract(getLocation());
        if(Math.hypot(direction.getX(), direction.getY()) < PERSON_MAX_SPEED) {
            // last step to goal
            stepSize = direction;
        } else {
            // approaching goal
            stepSize = direction.multiply(PERSON_MAX_SPEED /
                    Math.hypot(direction.getX(), direction.getY()));
        }
        super.step();
    }

    public void write(String filename) {
        try (DataOutputStream stream = new DataOutputStream(new FileOutputStream(filename))) {
            stream.writeInt((int)(getLocation().getX()));
            stream.writeInt((int)(getLocation().getY()));
//            try (PrintWriter writer = new PrintWriter(stream)) { // write text!
//                writer.println(getLocation().getX() + " " +
//                        getLocation().getY());
//                int x = 5 / 0;
//            }
        } catch (FileNotFoundException e) {
            // TODO:
            System.out.println("fILE NOT FOUND: "+filename);
        } catch (IOException e) {
            // TODO:
            System.out.println("IO Exception! "+e.getMessage()+" "+e.toString());
        }

    }

    /**
     * The circular shape on the map that the person approaches.
     */
    public static class Goal {

        public static final int RADIUS = 100;
        private final Circle personTarget;

        public Goal() {
            personTarget = new Circle(RADIUS);
            personTarget.setStroke(Color.GREEN);
            personTarget.setFill(Color.GREEN.deriveColor(1, 1, 1, 0.2));
            personTarget.relocate(0, 0);
        }

        public Point2D getTarget() {
            return new Point2D(personTarget.getCenterX(),personTarget.getCenterY()).add(RADIUS, RADIUS);
        }
    }
}