私はボイド群れプロジェクトに取り組んでいます。私の目標は、ボイドによって回避されなければならないいくつかのドラッグ可能なオブジェクトを持つことです。異なる開始位置を持ついくつかの異なる群れがあります。
ドラッグ可能なオブジェクトを1つ避けるために、ボイドを取得することができました。しかし、すべてを回避させることはできないようです。(for ループを使用)
なぜこれがうまくいかないのか、私には本当にわかりません..
いくつかの提案をいただければ幸いです。
コード：
int initBoidNum = 100; //amount of boids to start the program with
BoidList flock1, flock2, flock3;
Draggable draggable;
NullDraggableObject nullDraggableObject;
ArrayList draggables;
int id;
float[] xposs= new float[10];
float[] yposs= new float[10];
String turn;
void setup() {
size(1000, 700);
//create and fill the list of boids
flock1 = new BoidList(150, 0, 10, 100);
flock2 = new BoidList(150, 255, 10, 200);
flock3 = new BoidList(150, 150, 10, 300);
turn = "turn";
nullDraggableObject = new NullDraggableObject();
draggables = new ArrayList();
for (int i = 0; i < 10; i++) {
draggables.add(new DraggableObject(random(width), random(height/2)));
}
}
void draw() {
background(100, 60);
flock1.run();
flock2.run();
flock3.run();
stroke(255);
noFill();
draggable = nullDraggableObject;
for (id = 0; id < draggables.size (); id++) {
Draggable d = (Draggable)draggables.get(id);
d.draw();
if (d.isBeingMouseHovered()) {
draggable = d;
}
}
}
void mousePressed() {
draggable.mousePressed();
}
void mouseDragged() {
draggable.mouseDragged();
}
void mouseReleased() {
draggable.mouseReleased();
}
interface Draggable {
boolean isBeingMouseHovered();
boolean inside(float ix, float iy);
void draw();
void mousePressed();
void mouseDragged();
void mouseReleased();
}
class NullDraggableObject implements Draggable {
boolean isBeingMouseHovered() {
return false;
}
boolean inside(float ix, float iy) {
return false;
}
void draw() {
}
void mousePressed() {
}
void mouseDragged() {
}
void mouseReleased() {
}
}
public class DraggableObject implements Draggable {
float XX, YY;
float radius;
boolean drag;
float dragX, dragY;
DraggableObject(float _x, float _y) {
XX = _x;
YY = _y;
radius = 50;
drag = false;
dragX = 0;
dragY = 0;
}
boolean isBeingMouseHovered() {
return inside(mouseX, mouseY);
}
boolean inside(float ix, float iy) {
return (dist(XX, YY, ix, iy) < radius);
}
void draw() {
ellipseMode(CENTER);
ellipse(XX, YY, 2*radius, 2*radius);
String space = "__";
println(id);
println(XX);
println(YY);
xposs[id] = XX;
yposs[id] = YY;
}
void mousePressed() {
drag = inside(mouseX, mouseY);
if (drag) {
dragX = mouseX - XX;
dragY = mouseY - YY;
}
}
void mouseDragged() {
if (drag) {
XX = mouseX - dragX;
YY = mouseY - dragY;
}
}
void mouseReleased() {
drag = false;
}
}
class Boid {
//fields
PVector pos, vel, acc, ali, coh, sep; //pos, velocity, and acceleration in a vector datatype
float neighborhoodRadius; //radius in which it looks for fellow boids
float maxSpeed = 1; //maximum magnitude for the velocity vector
float maxSteerForce = .05; //maximum magnitude of the steering vector
float sMod, aMod, cMod; //modifiers for the three forces on the boid
float h; //hue
Boid(PVector inPos) {
pos = new PVector();
pos.set(inPos);
vel = new PVector(random(-1, 1), random(-1, 1));
acc = new PVector(0, 0);
neighborhoodRadius = 20;
sMod = 1;
aMod = 1;
cMod = 4;
}
Boid(PVector inPos, PVector inVel, float r) {
pos = new PVector();
pos.set(inPos);
vel = new PVector();
vel.set(inVel);
acc = new PVector(0, 0);
neighborhoodRadius = r;
}
void run(ArrayList bl) {
for (int i =0; i < 10; i++) {
acc.add(attract(new PVector(width/2, height/2), true));
acc.add(avoid(new PVector(xposs[i], yposs[i]), true));
if (i == 10) i = 0;
}
if (pos.x>width-10)acc.add(bounce(new PVector(width, pos.y), true));
if (pos.x<10) acc.add(bounce(new PVector(0, pos.y), true));
if (pos.y>height-10) acc.add(bounce(new PVector(pos.x, height), true));
if (pos.y<10) acc.add(bounce(new PVector(pos.x, 0), true));
ali = alignment(bl);
coh = cohesion(bl);
sep = seperation(bl);
for (int i =0; i < 10; i++) {
if (PVector.dist(new PVector(xposs[i], yposs[i]), pos)>180) {
acc.add(PVector.mult(ali, aMod));
acc.add(PVector.mult(coh, cMod));
acc.add(PVector.mult(sep, sMod));
}
if (PVector.dist(new PVector(xposs[i], yposs[i]), pos)<80) maxSpeed = 1000;
if (i == 10) i = 0;
}
if (PVector.dist(new PVector(width, height), pos)<60) maxSpeed = 1000;
if (PVector.dist(new PVector(0, 0), pos)<50) {
maxSpeed = 1000;
} else {
maxSpeed = 1;
}
move();
checkBounds();
render();
}
void move() {
vel.add(acc); //add acceleration to velocity
vel.limit(maxSpeed); //make sure the velocity vector magnitude does not exceed maxSpeed
pos.add(vel); //add velocity to position
acc.mult(0); //reset acceleration
}
void checkBounds() {
}
void render() {
pushMatrix();
translate(pos.x, pos.y);
rotate(atan2(vel.y, vel.x)); //rotate drawing matrix to direction of velocity
stroke(0);
noFill();
ellipse(0, 0, neighborhoodRadius/2, neighborhoodRadius/2);
noStroke();
fill(h);
//draw triangle
beginShape(TRIANGLES);
rect(0, 0, 6, 2);
endShape();
popMatrix();
}
//steering. If arrival==true, the boid slows to meet the target. Credit to Craig Reynolds
PVector steer(PVector target, boolean arrival) {
PVector steer = new PVector(); //creates vector for steering
if (!arrival) {
steer.set(PVector.sub(target, pos)); //steering vector points towards target (switch target and pos for avoiding)
steer.limit(maxSteerForce); //limits the steering force to maxSteerForce
} else {
PVector targetOffset = PVector.sub(target, pos);
float distance=targetOffset.mag();
float rampedSpeed = maxSpeed*(distance/100);
float clippedSpeed = min(rampedSpeed, maxSpeed);
PVector desiredVelocity = PVector.mult(targetOffset, (clippedSpeed/distance));
steer.set(PVector.sub(desiredVelocity, vel));
}
return steer;
}
//avoid. If weight == true avoidance vector is larger the closer the boid is to the target
PVector avoid(PVector target, boolean weight) {
PVector steer = new PVector(); //creates vector for steering
steer.set(PVector.sub(pos, target)); //steering vector points away from target
if (weight) steer.mult(1/sq(PVector.dist(pos, target)));
//steer.limit(maxSteerForce); //limits the steering force to maxSteerForce
return steer;
}
PVector attract(PVector target, boolean weight) {
PVector steer = new PVector(); //creates vector for steering
steer.set(PVector.sub(target, pos)); //steering vector points away from target
if (weight) steer.mult(1/sq(PVector.dist(target, pos)));
//steer.limit(maxSteerForce); //limits the steering force to maxSteerForce
return steer;
}
PVector bounce(PVector target, boolean weight) {
PVector steer = new PVector(); //creates vector for steering
steer.set(PVector.sub(pos, target)); //steering vector points away from target
if (weight) steer.mult(1/sq(PVector.dist(pos, target)));
//steer.limit(maxSteerForce); //limits the steering force to maxSteerForce
return steer;
}
PVector seperation(ArrayList boids) {
PVector posSum = new PVector(0, 0);
PVector repulse;
for (int i=0; i<boids.size (); i++) {
Boid b = (Boid)boids.get(i);
float d = PVector.dist(pos, b.pos);
if (d>0&&d<=neighborhoodRadius) {
repulse = PVector.sub(pos, b.pos);
repulse.normalize();
repulse.div(d);
posSum.add(repulse);
}
}
return posSum;
}
PVector alignment(ArrayList boids) {
PVector velSum = new PVector(0, 0);
int count = 0;
for (int i=0; i<boids.size (); i++) {
Boid b = (Boid)boids.get(i);
float d = PVector.dist(pos, b.pos);
if (d>0&&d<=neighborhoodRadius) {
velSum.add(b.vel);
count++;
}
}
if (count>0) {
velSum.div((float)count);
velSum.limit(maxSteerForce);
}
return velSum;
}
PVector cohesion(ArrayList boids) {
PVector posSum = new PVector(0, 0);
PVector steer = new PVector(0, 0);
int count = 0;
for (int i=0; i<boids.size (); i++) {
Boid b = (Boid)boids.get(i);
float d = dist(pos.x, pos.y, b.pos.x, b.pos.y);
if (d>0&&d<=neighborhoodRadius) {
posSum.add(b.pos);
count++;
}
}
if (count>0) posSum.div((float)count);
steer = PVector.sub(posSum, pos);
steer.limit(maxSteerForce);
return steer;
}
}
class BoidList {
ArrayList boids; //will hold the boids in this BoidList
float h; //for color
BoidList(int n, float ih, int xstart, int ystart) {
boids = new ArrayList();
h = ih;
for (int i=0; i<n; i++) {
boids.add(new Boid(new PVector(xstart, ystart)));
}
}
void run() {
for (int i=0; i<boids.size (); i++) {
Boid tempBoid = (Boid)boids.get(i); //create a temporary boid to process and make it the current boid in the list
tempBoid.h = h;
tempBoid.run(boids); //tell the temporary boid to execute its run method
}
}
}