public int compare(Particle p1, Particle p2) {
float val1 = PVector.dist(p1.pos, arbitraryPos);
float val2 = PVector.dist(p2.pos, arbitraryPos);
if (val1 < val2) {
return -1;
}
if (val1 > val2) {
return 1;
}
return 0;
}
public void avoid(ArrayList obstacles) {
// Make a vector that will be the position of the object
// relative to the Boid rotated in the direction of boid's velocity
PVector closestRotated = new PVector(sight + 1, sight + 1);
float closestDistance = 99999;
Obstacle avoid = null;
// Let's look at each obstacle
for (int i = 0; i < obstacles.size(); i++) {
Obstacle o = (Obstacle) obstacles.get(i);
float d = PVector.dist(loc, o.loc);
PVector dir = vel.get();
dir.normalize();
PVector diff = PVector.sub(o.loc, loc);
// Now we use the dot product to rotate the vector that points from boid to obstacle
// Velocity is the new x-axis
PVector rotated = new PVector(diff.dot(dir), diff.dot(getNormal(dir)));
// Is the obstacle in our path?
if (PApplet.abs(rotated.y) < (o.radius + r)) {
// Is it the closest obstacle?
if ((rotated.x > 0) && (rotated.x < closestRotated.x)) {
closestRotated = rotated;
avoid = o;
}
}
}
// Can we actually see the closest one?
if (PApplet.abs(closestRotated.x) < sight) {
// The desired vector should point away from the obstacle
// The closer to the obstacle, the more it should steer
PVector desired =
new PVector(closestRotated.x, -closestRotated.y * sight / closestRotated.x);
desired.normalize();
desired.mult(closestDistance);
desired.limit(maxspeed);
// Rotate back to the regular coordinate system
rotateVector(desired, vel.heading2D());
// Draw some debugging stuff
if (debug) {
stroke(0);
line(loc.x, loc.y, loc.x + desired.x * 10, loc.y + desired.y * 10);
avoid.highlight(true);
}
// Apply Reynolds steering rules
desired.sub(vel);
desired.limit(maxforce);
acc.add(desired);
}
}
// TODO: passar métodos de comer para métodos nas classes correspondentes!!
// método para consumir comida! diferente de caçar comida!!
void eat(ArrayList<Food> theFood) {
for (Food f : theFood) {
float d = PVector.dist(bodyCopy.loc, f.loc);
if (d < 20) {
// TODO: implementar métodos de parar para comer, (é uma
// decisão).
}
}
}
// se outro é predator
public void beHunted(ArrayList<Creature> creatures) {
for (Creature other : creatures) {
float d = PVector.dist(loc, other.loc);
if (((d > 0) && (d < 40)) && (other.isPredator == true && isPredator == false)) {
if (other.isHunting) {
fight(other);
bodyCopy.fleeFromEnemy(other);
}
}
}
}
public void draw() {
/*---Update---*/
world.update();
worm.update();
for (int i = 0; i < extraNum; i++) {
extraWorms[i].update();
}
/*---Draw--*/
// Lights
lights();
/*
ambientLight(128f, 128f, 128f);
directionalLight(128f, 128f, 128f, 0f, 0f, -1f);
lightFalloff(1f, 0f, 0f);
lightSpecular(0f, 0f, 0f);
*/
// Camera
perspective(fov, aspect, near, far);
// Calculate camera position
if (PVector.dist(worm.getPosition(), eye) > eyeDist) {
eye = PVector.sub(eye, worm.getPosition());
eye.normalize();
eye.mult(eyeDist);
eye.add(worm.getPosition());
}
camera(
eye.x,
eye.y,
eye.z, // eyeX, eyeY, eyeZ (camera position)
worm.getPosition().x,
worm.getPosition().y,
worm.getPosition().z, // centerX, centerY, centerZ (look at)
0f,
1f,
0f); // upX, upY, upZ
// Action
world.draw();
worm.draw();
for (int i = 0; i < extraNum; i++) {
extraWorms[i].draw();
}
// Drama!
}
private void calcCam(boolean is3D) {
if (rotVector.mag() != 0 || panVector.mag() != 0 || camDist != prevCamDist) {
prevCamDist = camDist;
camRot += rotVector.x;
if ((camPitch + rotVector.y) < 0.99 && (camPitch + rotVector.y) > 0.01)
camPitch += rotVector.y;
if (is3D) {
PVector camPan =
new PVector(
(panVector.x * (float) Math.sin(Math.PI * 0.5 + (Math.PI * camRot)))
+ (panVector.y * (float) Math.sin(Math.PI * 1.0 + (Math.PI * camRot))),
(panVector.y * (float) Math.cos(Math.PI * 1.0 + (Math.PI * camRot)))
+ (panVector.x * (float) Math.cos(Math.PI * 0.5 + (Math.PI * camRot))));
camPan.mult(0.05f * PVector.dist(camPos, camCenter));
camCenter.x += camPan.x;
camCenter.y += camPan.y;
camPan.x = 0;
camPan.y = 0;
} else {
camCenter.x -= 0.05f * (camPos.z - camCenter.z) * panVector.x;
camCenter.y += 0.05f * (camPos.z - camCenter.z) * panVector.y;
}
panVector.x = 0;
panVector.y = 0;
rotVector.x = 0;
rotVector.y = 0;
camPos.x =
camCenter.x
- camDist * (float) Math.sin(Math.PI * camRot) * (float) Math.sin(Math.PI * camPitch);
camPos.y =
camCenter.y
- camDist * (float) Math.cos(Math.PI * camRot) * (float) Math.sin(Math.PI * camPitch);
camPos.z = camCenter.z - camDist * (float) Math.cos(Math.PI * camPitch);
}
}
public void setPositions(PVector pos1, PVector pos2) {
this.pos1 = pos1;
this.pos2 = pos2;
this.height = pos1.dist(pos2);
}