package utils;

import animal.Position;
import areas.Field;
import java.util.ArrayList;

public class Util {

    private static Field field;

    public static void setField(Field field) {
        Util.field = field;
    }

    private Util(){
    }

    private static boolean correctIndex(int i, int j) {
        return i>=0 && j>=0 && i<field.getHeight() && j<field.getWidth();
    }

    public static ArrayList<Cell> surroundingCells(Position position, int distance) {
        ArrayList<Cell> result = new ArrayList<>();
        for (int i = position.getX()-distance; i <= position.getX()+distance; i++) {
            for (int j = position.getY()-distance; j <= position.getY()+distance; j++) {
                if (correctIndex(i,j)){
                    if (!(i==position.getX() && j==position.getY())){
                        Cell cell = new Cell();
                        cell.animal = field.getAnimal(i, j);
                        cell.position = new Position(i, j);
                        result.add(cell);
                    }
                }
            }
        }
        return result;
    }

}