Collision.java

package de.swagner.paxbritannica;

import com.badlogic.gdx.math.Intersector;

public class Collision {

	private static Bullet bullet;
	private static Ship ship;
	
	public static void collisionCheck() {
		
		for (int i=0; i< GameInstance.getInstance().bullets.size;i++) {
			bullet = GameInstance.getInstance().bullets.get(i);
			if (bullet.alive) {
				for (int n=0; n< GameInstance.getInstance().fighters.size;n++) {
					ship =  GameInstance.getInstance().fighters.get(n);
					collisionCheck(bullet, ship);
				}
				for (int n=0; n< GameInstance.getInstance().bombers.size;n++) {
					ship =  GameInstance.getInstance().bombers.get(n);
					collisionCheck(bullet, ship);
				}
				for (int n=0; n< GameInstance.getInstance().frigates.size;n++) {
					ship =  GameInstance.getInstance().frigates.get(n);
					collisionCheck(bullet, ship);
				}
				for (int n=0; n< GameInstance.getInstance().factorys.size;n++) {
					ship =  GameInstance.getInstance().factorys.get(n);
					collisionCheck(bullet, ship);
				}
			}

		}
	}

	private static void collisionCheck(Bullet bullet, Ship ship) {
		if (bullet.id!=ship.id && ship.alive) {
			
			for(int i = 0; i<ship.collisionPoints.size;++i) {
				if(Intersector.isPointInPolygon(bullet.collisionPoints, ship.collisionPoints.get(i))) {
					ship.damage(bullet.damage);
					GameInstance.getInstance().bulletHit(ship, bullet);
					bullet.alive = false;
					return;
				}
			}
			
			for(int i = 0; i<bullet.collisionPoints.size;++i) {
				if(Intersector.isPointInPolygon(ship.collisionPoints, bullet.collisionPoints.get(i))) {
					ship.damage(bullet.damage);
					GameInstance.getInstance().bulletHit(ship, bullet);
					bullet.alive = false;
					return;
				}
			}
		}
	}

}