HW #23

[chasestarr]

In this homework we will practice using the ParticleSystem class. Use this week's exercise for help.

_Description:_
Be creative and make your own project! Use the second exercise from today's class as a base for your custom project. Below are some ideas if you are stuck.

[The-Space-Core]

Question.
What do you mean by move dynamically?

[Brandonsugar]

For some reason, my code isn't working. I was only able to start today, so it's not too amazing. The objective is for it to spawn the balls on the mouse automatically, but the balls change direction when you press the arrow keys. It mostly works, but the second part won't. Here's my code;
Tab 1;

ParticleSystem ps = new ParticleSystem(500,500);
Particle p = new Particle(width/2,height/2);
PVector spon = new PVector(random(-0.1,0.1),random(-0.1,0.1));

void setup(){
  size(1000,1000);
}

void draw(){
  background(0);
  ps.run();
  ps.addParticle();
  ps.center = new PVector(mouseX,mouseY);
}

void keyPressed(){
if(keyCode == RIGHT){
  ps.applyForce(new PVector(0.75,0));
}
if(keyCode == LEFT){
  ps.applyForce(new PVector(-0.75,0));
}
if(keyCode == UP){
  ps.applyForce(new PVector(0,-0.75));
}
if(keyCode == DOWN){
  ps.applyForce(new PVector(0,0.75));
}
}

Tab 2;

class Particle{
  PVector location;
  PVector acceleration;
  PVector velocity;
  int lifeSpan;
  //boolean isDead(){
  //  if(lifeSpan(0)){
  //    return true;
  //  } else {
  //    return false;
  //  }
  //}

  Particle(float xLoc,float yLoc){
    location = new PVector(xLoc,yLoc);
    velocity = new PVector();
    acceleration = new PVector();
    acceleration.mult(0);
    lifeSpan = 255;
  }
  void display(){
    stroke(0,lifeSpan);
    fill(255,lifeSpan);
    ellipse(location.x,location.y,20,20);
  }
  void update(){
    velocity.add(acceleration);
    location.add(velocity);
    lifeSpan -= 1;
  }
  void run(){
    update();
    display();
    borders();
  }
  void applyForce(PVector f){
    for(int index = 0; index < PList.size(); index++){
      Particle p = PList.get(index);
      p.applyForce(f);
    }
  }
  void borders(){
    if(location.x > width){
      velocity.x *= -0.98;
    } else if(location.x < 0){
      velocity.x *= -0.98;
    } 
    if(location.y > height){
      velocity.y *= -0.98;
    } else if(location.y < 0){
      velocity.y *= -0.98;
    }
  }

  Boolean isDead(){
    if(lifeSpan<0){
      return true;
    } else { 
      return false;
    }
}
}

Tab 3;

class ParticleSystem{
  ArrayList<Particle> PList;
  PVector center;

  ParticleSystem(float xLoc, float yLoc){
    PList = new ArrayList<Particle>();
    center = new PVector(xLoc,yLoc);
  }

  void addParticle(){
    PList.add(new Particle(center.x, center.y));
  }

  void applyForce(PVector f){
    p.applyForce(f);
  }

  void run(){
    for(int index = 0; index < PList.size(); index++){
      Particle p = PList.get(index);
      p.run();
      p.applyForce(spon);
      if(p.isDead()){
       PList.remove(index);
      }
    }
  }
}

[The-Space-Core]

Particle p;
ParticleSystem ps = new ParticleSystem(200,200);
PVector gravityN = new PVector(0,-0.01);
PVector gravity = new PVector(0,0.01);
ArrayList plist = new ArrayList();
void setup(){

size(800,800);
p = new Particle(random(width),random(height));
}
void draw(){
background(255);
p.update();
p.display();

p.run();
ps.run();
//ps.addParticle();
noFill();
noStroke();
rect(0,0,400,400);
if(p.location.x > height/2 && p.location.y > width/2){
p.applyForce(gravityN);
p.applyForce(gravityN);
}
rect(400,0,400,400);
if(p.location.x < width/2 && p.location.y < height/2){
p.applyForce(gravityN);
p.applyForce(gravityN);
}
rect(400,400,400,400);
if(p.location.x > width/2 && p.location.y < height/2){

}

noFill();

rect(0,400,400,400);
if(p.location.x < width/2 && p.location.y > height/2);
p.applyForce(gravity);
}

void mouseClicked(){
p = new Particle(mouseX,mouseY);

}

[The-Space-Core]

class Particle{
PVector velocity;
PVector acceleration;
PVector location;
int lifespan;

Particle(float locX, float locY){
location = new PVector(locX,locY);
acceleration = new PVector();
velocity = new PVector();
lifespan = 255;
}

void update(){
velocity.add(acceleration);
location.add(velocity);
acceleration.mult(0);
lifespan -= 1;
velocity.limit(0.1);
}
void display(){
stroke(lifespan);
fill(175,lifespan);
ellipse(location.x,location.y,15,15);
}
void run(){
update();
display();
}
void applyForce(PVector force){
acceleration.add(force);
}
boolean isDead(){
if(lifespan>0){
return true;
}else{
return false;
}
}
}

[The-Space-Core]

class ParticleSystem{
ArrayList plist;
PVector center;

ParticleSystem(float locX, float locY){
plist = new ArrayList();
center = new PVector(locX,locY);
}

void addParticle(){
plist.add(new Particle(mouseX,mouseY));
}

void run(){
for(int i = 0; i < plist.size(); i++){
Particle p = plist.get(i);
p.run();
//p.applyForce(gravityN);
if (p.isDead()){
println("rent in panama");
plist.remove(i);
}
}
}
}

[GoHawks12]

Tab one

Particle p;
ParticleSystem a = new ParticleSystem(200,200);
PVector gravityN = new PVector(0,-0.05);
PVector gravity = new PVector(0,0.05);
ArrayList plist = new ArrayList();
void setup(){

size(1000,1000);
p = new Particle(random(width),random(height));
}
void draw(){
background(117,0,117);
p.update();
p.display();

p.run();
a.run();
rect(250,400,250,250);
if(p.location.x > height/2 && p.location.y > width/2){
p.applyForce(gravityN);
p.applyForce(gravityN);
}

rect(500,400,250,250);
if(p.location.x > width/2 && p.location.y < height/2){

}



rect(0,400,250,250);
if(p.location.x < width/2 && p.location.y > height/2);
p.applyForce(gravity);
}

void mouseClicked(){
p = new Particle(mouseX,mouseY);

}

Tab two

class ParticleSystem{
ArrayList plist;
PVector center;

ParticleSystem(float locX, float locY){
plist = new ArrayList();
center = new PVector(locX,locY);
}

void addParticle(){
plist.add(new Particle(mouseX,mouseY));
}

void run(){
for(int i = 0; i < plist.size(); i++){
p.run();
if (p.isDead()){
plist.remove(i);
}
}
}
}

Tab three

class Particle{
PVector velocity;
PVector acceleration;
PVector location;
int lifespan;

Particle(float locX, float locY){
location = new PVector(locX,locY);
acceleration = new PVector();
velocity = new PVector();
lifespan = 255;
}

void update(){
velocity.add(acceleration);
location.add(velocity);
acceleration.mult(0);
lifespan -= 1;
velocity.limit(0.2);
} 
void display(){
stroke(lifespan);
fill(250,lifespan);
ellipse(location.x,location.y,25,25);

}
void run(){
update();
display();
}
void applyForce(PVector force){
acceleration.add(force);
}
boolean isDead(){
if(lifespan>0){
return true;
}else{
return false;
}
}
}

[Pummelweed]

Tab one:

ArrayList<Particle> plist = new ArrayList<Particle>();
PVector gravityN = new PVector(0,-0.02);
//upper
PVector sideL = new PVector(random(-0- -0.5),0);
PVector sideR = new PVector(random(0-0.5),0);
//lower
PVector btmL = new PVector(random(-0 - -0.5),0);
PVector btmR = new PVector(random(0-0.5),0);

void setup(){
  size(500,500);
}

void draw(){
  background(227,77,77);
  for(int index = 0; index < plist.size(); index++){
    Particle p = plist.get(index);
    p.run();
    p.applyForce(gravityN);

    if(p.location.x <= 250 && p.location.y <= 250){
      p.applyForce(sideL);
    } else if (p.location.x >= 250 && p.location.y <= 250){
      p.applyForce(sideR);
    } else if (p.location.x <= 250 && p.location.y >= 250){
      p.applyForce(btmL);
    } else if (p.location.x >= 250 && p.location.y >= 250){
      p.applyForce(btmR);
    }

    if(p.isDead()){
      plist.remove(index);
      println("RIP");

    }
  }
}

void mouseClicked(){
  plist.add(new Particle(mouseX,mouseY));
  plist.add(new Particle(mouseX+20,mouseY));
  plist.add(new Particle(mouseX+20,mouseY+20));
  plist.add(new Particle(mouseX-20,mouseY-20));
  plist.add(new Particle(mouseX,mouseY-20));
}

Tab two:

class Particle{
  PVector velocity;
  PVector location;
  PVector acceleration;
  int lifespan;

  Particle(float locX, float locY){
    location = new PVector(locX, locY);
    acceleration = new PVector();
    velocity = new PVector();
    lifespan = 355;
  }

  void update(){
    velocity.add(acceleration);
    location.add(velocity);
    acceleration.mult(0);
    lifespan -= 2;
  }

  void display(){
    noStroke();
    fill(240,182,216,lifespan);
    ellipse(location.x, location.y, 16, 16);
  }

  void applyForce(PVector f){
    acceleration.add(f);
  }

  void run(){
    update();
    display();
  }
  boolean isDead(){
    if(lifespan<0){
      return true;
    } else {
      return false;
    }
  }
}

Tab three:

class ParticleSystem {
  ArrayList<Particle> plist;
  PVector center;

  ParticleSystem(float locX, float locY){
    plist = new ArrayList<Particle>();
    center = new PVector(locX,locY);
  }
  void addParticle(){
    plist.add(new Particle(center.x,center.y));
  }

  void run(){
    for(int index = 0; index < plist.size(); index++){
    Particle p = plist.get(index);
    p.run();
    p.applyForce(gravityN);
    if(p.isDead()){
      plist.remove(index);
      println("RIP");
    }
    }
  }
}