Particles.js : limit number of particles

Question

I can't find if it is possible to limit the total number of particles.

Is there any way of doing this?

Particles.js Github

Answer 1

You can modify particles.js (row 750) adding an additional check in the push function:

/* ---------- pJS functions - modes events ------------ */

  pJS.fn.modes.pushParticles = function(nb, pos){

    pJS.tmp.pushing = true;

    if(pJS.particles.array.length<140){
        for(var i = 0; i < nb; i++){
          pJS.particles.array.push(
            new pJS.fn.particle(
              pJS.particles.color,
              pJS.particles.opacity.value,
              {
                'x': pos ? pos.pos_x : Math.random() * pJS.canvas.w,
                'y': pos ? pos.pos_y : Math.random() * pJS.canvas.h
              }
            )
          )
          if(i == nb-1){
            if(!pJS.particles.move.enable){
              pJS.fn.particlesDraw();
            }
            pJS.tmp.pushing = false;
          }
        }
    }

  };

I used 140 as maximum number since it is a good value in order to not lose performance. Obviously you can modify it as needed.