code: public void updateBlendMode() {
  		if (additive.isSelected()) {
  			game.getSystem().setBlendingMode(ParticleSystem.BLEND_ADDITIVE);
   		} else {
  			game.getSystem().setBlendingMode(ParticleSystem.BLEND_COMBINE);
   		}
  	}
docs: Change the visual indicator for the current particle system
  blend mode