What is the syntax to call class A object into class B
in
Programming Questions
•
7 months ago
Hi everybody!
I will start with an example,
One class A define a ball bouncing around the screen. This ball is call several times (say 20).
An other class B define another ball. This ball is call 3 times.
I want ball B to interact with ball A (attraction, repulsion, etc.). But I can't find a way to call the object B in the class A.
Anyone understand?
Now, here is what I have done:
- import toxi.geom.*;
- Particule [] Environment = new Particule [300];
- void setup() {
- size(600, 600, P3D);
- smooth();
- for (int i = 0; i < Environment.length; i++) {
- Vec3D originLoc = new Vec3D(random(width), random(height),0);
- Environment[i] = new Particule(originLoc);
- }
- }
- void draw() {
- background(0);
- for (int i = 0; i < Environment.length; i++) {
- Environment[i].run();
- }
- }
- class Particule {
- // Global Variables
- Vec3D loc = new Vec3D();
- Vec3D speed = new Vec3D(random(-1, 1), random(-1, 1), 0);
- Vec3D locRef = new Vec3D(100, 100, 0);
- Vec3D speedRef = new Vec3D(0.5, 0.7, 0);
- int RAD = round(random(1, 5));
- //Constructor
- Particule(Vec3D _loc) {
- loc = _loc;
- }
- //Method
- void run() {
- display();
- aggregate();
- separate();
- move();
- bounce();
- }
- void bounce() {
- if (loc.x > width | loc.x < 0) {
- speed.x = - speed.x;
- }
- if (loc.y >= height | loc.y < 0) {
- speed.y = - speed.y;
- }
- if (locRef.x > width | locRef.x < 0) {
- speedRef.x = - speedRef.x;
- }
- if (locRef.y >= height | locRef.y < 0) {
- speedRef.y = - speedRef.y;
- }
- }
- void move() {
- loc.addSelf(speed);
- locRef.addSelf(speedRef);
- }
- void display() {
- noFill();
- stroke(255);
- ellipse(loc.x, loc.y, RAD, RAD);
- pushStyle();
- noStroke();
- // fill(255, 0, 0);
- ellipse(locRef.x, locRef.y, 10, 10);
- popStyle();
- }
- void aggregate() {
- Vec3D distance = new Vec3D();
- distance = loc.copy();
- distance = locRef.sub(distance);
- float d = distance.magnitude();
- println(d);
- if (d > -100 && d < 100) {
- distance.normalize();
- speed = distance;
- //stroke(0,255,0);
- //line(loc.x, loc.y, distance.x, distance.y);
- stroke(0, 0, 255);
- line (locRef.x, locRef.y, loc.x, loc.y);
- }
- }
- void separate() {
- Vec3D distance = new Vec3D();
- distance = loc.copy();
- distance = locRef.sub(distance);
- float d = distance.magnitude();
- if (d <= RAD*5 && d >= -RAD*5) {
- speed.invert();
- }
- }
- }
I am more asking for a general syntax to use a class object into an other class.
Thanks!
Sylvain.
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