zeichenmaschine/examples/zm_boids/Boids.java

import schule.ngb.zm.*;
import schule.ngb.zm.util.ImageLoader;

import java.awt.event.KeyEvent;
import java.util.ArrayList;
import java.util.List;

public class Boids extends Zeichenmaschine {

	public static void main( String[] args ) {
		new Boids();
	}

	public static final boolean BORDER_WRAP = true;

	public static final int N_BOIDS = 200;

	public static final int N_PREDATORS = 0;

	private List<Creature> creatures;

	public Boids() {
		super(1280, 720, "ZM: Boids");
	}

	@Override
	public void setup() {
		setFullscreen(true);
		setCursor(ImageLoader.loadImage("pointer.png"), 0, 0);

		creatures = new ArrayList<Creature>();

		synchronized( creatures ) {
			for( int i = 0; i < N_BOIDS; i++ ) {
				creatures.add(new Boid());
			}
			for( int i = 0; i < N_PREDATORS; i++ ) {
				creatures.add(new Predator());
			}
		}
	}

	@Override
	public void update( double delta ) {
		synchronized( creatures ) {
			for( Creature c : creatures ) {
				c.update(creatures);
			}
		}
	}

	@Override
	public void draw() {
		drawing.clear(0, 125, 182);
		synchronized( creatures ) {
			for( Creature c : creatures ) {
				c.draw(drawing);
			}
		}
	}

	@Override
	public void mouseClicked() {
		synchronized( creatures ) {
			creatures.add(new Predator(
				Vector.mouse(), Vector.ZERO
			));
		}
	}

	@Override
	public void keyPressed() {
		if( keyCode == KeyEvent.VK_G ) {
			setSize(800, 800);
		}
	}

}