public void draw() {
background(255);
// Turn off highlighting for all obstalces
for (int i = 0; i < obstacles.size(); i++) {
Obstacle o = (Obstacle) obstacles.get(i);
o.highlight(false);
}
// Act on all boids
for (int i = 0; i < boids.size(); i++) {
Boid b = (Boid) boids.get(i);
b.avoid(obstacles);
b.run();
}
// Display the obstacles
for (int i = 0; i < obstacles.size(); i++) {
Obstacle o = (Obstacle) obstacles.get(i);
o.display();
}
// Instructions
textFont(f);
fill(0);
text(
"Hit space bar to toggle debugging lines.\nClick the mouse to generate a new boids.",
10,
height - 30);
}
void checkClasses(Boid b) {
if (addSpeciesNameInUIClass) {
String uiClass = b.getAttribute("ui.class");
if (uiClass == null) uiClass = name;
else uiClass = uiClass + " " + name;
b.setAttribute("ui.class", uiClass);
}
}
/**
* Unregister this species from the boids graph.
*
* <p>This removes all boids pertaining to this species, and release the link with the graph.
*/
public void release() {
pop.release();
Iterator<Node> i = ctx.getNodeIterator();
while (i.hasNext()) {
Boid b = (Boid) i.next();
if (b.getSpecies() == this) {
i.remove();
}
}
}
public void draw() {
background(0);
// Draw an ellipse at the mouse location
int mx = mouseX;
int my = mouseY;
fill(100);
noStroke();
ellipse(mx, my, 30, 30);
// call some behaviors on our agent
// b.wander();
// b.seek(new Vector3D(mx,my));
b.arrive(new Vector3D(mx, my));
b.run();
}
/** Ensures all boids are inside the walls. */
public void ensureContainment() {
ArrayList<Line2D.Float> walls = p.getWalls();
for (Boid boid : boids) {
int intersections = 0;
PVector position = boid.getPosition();
for (Line2D.Float wall : walls) {
if (wall.intersectsLine(position.x, position.y, Float.MAX_VALUE, position.y)) {
++intersections;
}
}
if (intersections % 2 == 0) {
boid.setPosition(new PVector(p.width / 2.0f, p.height / 2.0f));
csp.updateEntity(boid, position);
}
}
}
/**
* Creates an empty flock.
*
* @param parent the PApplet that hosts this class
*/
public Flock(Flocking applet) {
p = applet;
boids = new ArrayList<Boid>();
// Size the cells so that we never have to search more
// than four cells.
float cellSize = 2.0f * Boid.getNeighborhoodSize();
int cellsX = (int) (p.width / cellSize);
int cellsY = (int) (p.height / cellSize);
csp = new CellSpacePartition<Boid>(p.width, p.height, cellsX, cellsY);
}
@Override
public Vector2 getUpdate(Boid boid, Vector<Boid> neighbours) {
Vector2 result = new Vector2(0, 0);
for (int i = 0; i < neighbours.size(); ++i) {
Vector2 direction = boid.getPosition().minus(neighbours.get(i).getPosition());
double distance = direction.normL2();
// Normalize
if (distance > 0) direction = direction.divide(distance);
double rejection = strength / (1e-7 * strength + falloff * distance);
result = result.add(direction.multiply(rejection));
}
return result;
}
void unregister(Boid b) {
boids.remove(b.getId());
/*
* if (addSpeciesNameInUIClass) { String uiClass =
* b.getAttribute("ui.class");
*
* if (uiClass != null && uiClass.indexOf(name) != -1) { uiClass =
* uiClass.replaceAll("(^|\\s)" + name + "($|\\s)", " "); uiClass =
* uiClass.trim();
*
* if(uiClass.length() == 0 ) b.removeAttribute("ui.class"); else
* b.setAttribute("ui.class", uiClass); } }
*/
}
void register(Boid b) {
boids.put(b.getId(), b);
}
/** Updates all boids in the flock. */
public void update() {
for (Boid boid : boids) {
boid.update(csp);
}
}
