How to use

emitParticle

method

in

com.jme3.effect.ParticleEmitter

/**
 * Instantly emits available particles, up to num.
 */
public void emitParticles(int num) {
  // Force world transform to update
  this.getWorldTransform();
  TempVars vars = TempVars.get();
  BoundingBox bbox = (BoundingBox) this.getMesh().getBound();
  Vector3f min = vars.vect1;
  Vector3f max = vars.vect2;
  bbox.getMin(min);
  bbox.getMax(max);
  if (!Vector3f.isValidVector(min)) {
    min.set(Vector3f.POSITIVE_INFINITY);
  }
  if (!Vector3f.isValidVector(max)) {
    max.set(Vector3f.NEGATIVE_INFINITY);
  }
  for(int i=0;i<num;i++) {
    if( emitParticle(min, max) == null ) break;
  }
  bbox.setMinMax(min, max);
  this.setBoundRefresh();
  vars.release();
}

while (tpf > interval){
  tpf -= interval;
  Particle p = emitParticle(min, max);
  if (p != null){
    p.life -= tpf;

/**
 * Instantly emits all the particles possible to be emitted. Any particles
 * which are currently inactive will be spawned immediately.
 */
public void emitAllParticles() {
  // Force world transform to update
  this.getWorldTransform();
  TempVars vars = TempVars.get();
  BoundingBox bbox = (BoundingBox) this.getMesh().getBound();
  Vector3f min = vars.vect1;
  Vector3f max = vars.vect2;
  bbox.getMin(min);
  bbox.getMax(max);
  if (!Vector3f.isValidVector(min)) {
    min.set(Vector3f.POSITIVE_INFINITY);
  }
  if (!Vector3f.isValidVector(max)) {
    max.set(Vector3f.NEGATIVE_INFINITY);
  }
  while (emitParticle(min, max) != null);
  bbox.setMinMax(min, max);
  this.setBoundRefresh();
  vars.release();
}

/**
 * Instantly emits available particles, up to num.
 */
public void emitParticles(int num) {
  // Force world transform to update
  this.getWorldTransform();
  TempVars vars = TempVars.get();
  BoundingBox bbox = (BoundingBox) this.getMesh().getBound();
  Vector3f min = vars.vect1;
  Vector3f max = vars.vect2;
  bbox.getMin(min);
  bbox.getMax(max);
  if (!Vector3f.isValidVector(min)) {
    min.set(Vector3f.POSITIVE_INFINITY);
  }
  if (!Vector3f.isValidVector(max)) {
    max.set(Vector3f.NEGATIVE_INFINITY);
  }
  for(int i=0;i<num;i++) {
    if( emitParticle(min, max) == null ) break;
  }
  bbox.setMinMax(min, max);
  this.setBoundRefresh();
  vars.release();
}

while (tpf > interval){
  tpf -= interval;
  Particle p = emitParticle(min, max);
  if (p != null){
    p.life -= tpf;

while (tpf > interval){
  tpf -= interval;
  Particle p = emitParticle(min, max);
  if (p != null){
    p.life -= tpf;