SnakeHead.java

package com.codecool.snake.entities.snakes;

import com.codecool.snake.entities.GameEntity;
import com.codecool.snake.Globals;
import com.codecool.snake.Utils;
import com.codecool.snake.entities.Interactable;
import com.codecool.snake.entities.enemies.Enemy;
import com.codecool.snake.entities.powerups.SimplePowerUp;
import javafx.geometry.Point2D;

public class SnakeHead extends GameEntity implements SnakePart, Interactable {
    private static final float turnRate = 2;
    private Snake snake;

    public SnakeHead(Snake snake, Point2D position) {
        this.snake = snake;
        setImage(Globals.getInstance().getImage("SnakeHead"));
        setPosition(position);
    }

    public void updateRotation(SnakeControl turnDirection, float speed) {
        double headRotation = getRotate();

        if (turnDirection.equals(SnakeControl.TURN_LEFT)) {
            headRotation = headRotation - turnRate;
        }
        if (turnDirection.equals(SnakeControl.TURN_RIGHT)) {
            headRotation = headRotation + turnRate;
        }

        // set rotation and position
        setRotate(headRotation);
        Point2D heading = Utils.directionToVector(headRotation, speed);
        setX(getX() + heading.getX());
        setY(getY() + heading.getY());
    }

    @Override
    public void apply(GameEntity entity) {
        if (entity instanceof Enemy) {
            snake.changeHealth(((Enemy) entity).getDamage());
        }
        if (entity instanceof SimplePowerUp) {
            snake.addParts(4);
        }
    }

    @Override
    public void updatePosition(Point2D newPosition) {
        setPosition(newPosition);
    }

    @Override
    public Point2D getPosition() {
        return new Point2D(getX(), getY());
    }

    @Override
    public String getMessage() {
        throw new UnsupportedOperationException("Not supported yet."); // Generated from nbfs://nbhost/SystemFileSystem/Templates/Classes/Code/GeneratedMethodBody
    }
}