im making a game for mi school and i cant do that a static final int gets a random number, the game is asteroids and the asteroids are make with polygons, i can change the points of the polygon with this:
private static final int NUMBER_OF_POINTS = 5;
and if i put
private static final int NUMBER_OF_POINTS = 3;
it makes a triangle but i want that when the game start it generate random figures this by generating random numbers in the :
private static final int NUMBER_OF_POINTS = 3;
here is what i have made, but it doesnt work:
private static final int NUMBER_OF_POINTS = 3 + (int)(Math.random() * (5 - 3) + 1));
and here is the hole code :
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package game;
import java.awt.Polygon;
import java.util.Random;
public enum AsteroidSize {
/**
* Small Asteroids have a radius of 15, and are worth 150 points.
*/
XtraSmall(5.0, 150),
/**
* Small Asteroids have a radius of 15, and are worth 100 points.
*/
Small(15.0, 100),
/**
* Medium asteroids have a radius of 25, and are worth 50 points.
*/
Medium(25.0, 50),
/**
* Large asteroids have a radius of 40, and are worth 20 points.
*/
Large(40.0, 20),
/**
* XtraLarge asteroids have a radius of 40, and are worth 10 points.
*/
XtraLarge(50.0, 10);
/**
* The number of points on the Asteroid.
*/
private static final int NUMBER_OF_POINTS = 5;
/**
* The polygon for this type of Asteroid.
*/
public final Polygon polygon;
/**
* The radius of this type of Asteroid.
*/
public final double radius;
/**
* The number of points earned for killing this type of Asteroid.
*/
public final int killValue;
/**
* Creates a new type of Asteroid.
* @param radius The radius.
* @param value The kill value.
*/
private AsteroidSize(double radius, int value) {
this.polygon = generatePolygon(radius);
this.radius = radius + 1.0;
this.killValue = value;
}
/**
* Generates a regular polygon of size radius.
* @param radius The radius of the Polygon.
* @return The generated Polygon.
*/
private static Polygon generatePolygon(double radius) {
//Create an array to store the coordinates.
int[] x = new int[NUMBER_OF_POINTS];
int[] y = new int[NUMBER_OF_POINTS];
//Generate the points in the polygon.
double angle = (2 * Math.PI / NUMBER_OF_POINTS);
for(int i = 0; i < NUMBER_OF_POINTS; i++) {
x[i] = (int) (radius * Math.sin(i * angle));
y[i] = (int) (radius * Math.cos(i * angle));
}
//Create a new polygon from the generated points and return it.
return new Polygon(x, y, NUMBER_OF_POINTS);
}
}
