PlotIdUtils.java

package in.kyle.plotz2.util;

import in.kyle.plotz2.obj.player.PlotLocation;
import lombok.Data;

/**
 * Created by Kyle on Jul 24, 2015
 */
public class PlotIdUtils {
    
    public static int getBid(PlotLocation plotLocation) {
        return getBid(new WorldPoint(plotLocation.getX(), plotLocation.getZ()));
    }
    
    public static int getBid(WorldPoint worldPoint) {
        int x = worldPoint.getX();
        int y = worldPoint.getZ();
        int n = -1;
        int m = Math.max(Math.abs(x), Math.abs(y));
        
        if (x == m && y != -m) {
            n = (4 * m) * (m - 1) + m + y + 1;
        } else if (y == m) {
            n = (4 * m) * (m - 1) + (3 * m) - x + 1;
        } else if (x == -m) {
            n = (4 * m) * (m - 1) + (5 * m) - y + 1;
        } else if (y == -m) {
            n = (4 * m) * (m - 1) + (7 * m) + x + 1;
        }
        return n;
    }
    
    public static WorldPoint getPoint(int tileNum) {
        tileNum = tileNum - 1;
        Conditions.isTrue(tileNum > -1, "Tile cannot be less than 1");
        double intRoot = Math.floor(Math.sqrt(tileNum));
        
        int x = (int) ((Math.round(intRoot / 2) * Math.pow(-1, intRoot + 1)) + (Math.pow(-1, intRoot + 1) * (((intRoot * (intRoot + 1)) -
                tileNum) - Math.abs((intRoot * (intRoot + 1)) - tileNum)) / 2));
        
        int y = (int) ((Math.round(intRoot / 2) * Math.pow(-1, intRoot)) + (Math.pow(-1, intRoot + 1) * (((intRoot * (intRoot + 1)) - 
                tileNum) + Math.abs((intRoot * (intRoot + 1)) - tileNum)) / 2));
        
        
        return new WorldPoint(x, -y);
    }
    
    @Data
    public static class WorldPoint {
        
        private final int x;
        private final int z;
    }
}