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examples/zm_boids/Boids.java

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+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);
+		}
+	}
+
+}