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fixing up smoke particle system

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This commit is contained in:
Daniel Shiffman
2013-03-06 16:46:31 -05:00
parent 5d09d85a78
commit c951d4a31b
3 changed files with 15 additions and 31 deletions
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28
java/examples/Topics/Simulate/SmokeParticleSystem/ParticleSystem.pde
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@@ -4,25 +4,24 @@
class ParticleSystem {
ArrayList<Particle> particles; // An arraylist for all the particles
PVector origin; // An origin point for where particles are birthed
PVector origin; // An origin point for where particles are birthed
PImage img;
ParticleSystem(int num, PVector v, PImage img_) {
particles = new ArrayList<Particle>(); // Initialize the arraylist
origin = v.get(); // Store the origin point
origin = v.get(); // Store the origin point
img = img_;
for (int i = 0; i < num; i++) {
particles.add(new Particle(origin, img)); // Add "num" amount of particles to the arraylist
particles.add(new Particle(origin, img)); // Add "num" amount of particles to the arraylist
}
}
void run() {
Iterator<Particle> it = particles.iterator();
while (it.hasNext()) {
Particle p = it.next();
for (int i = particles.size()-1; i >= 0; i--) {
Particle p = particles.get(i);
p.run();
if (p.dead()) {
it.remove();
if (p.isDead()) {
particles.remove(i);
}
}
}
@@ -40,19 +39,6 @@ class ParticleSystem {
particles.add(new Particle(origin,img));
}
void addParticle(Particle p) {
particles.add(p);
}
// A method to test if the particle system still has particles
boolean dead() {
if (particles.isEmpty()) {
return true;
} else {
return false;
}
}
}