Ok, about sendParticles, why I thought it's just a /particle command.
It has values (particleType,x,y,z,particleCount,xOffset,yOffset,zOffset,speed)
and addParticle(particleType,x,y,z,xSpeed,ySpeed,zSpeed)
And i need those values as xSpeed,ySpeed,zSpeed that's what make particles fly in the directions that player is looking
How exactly I can make it, could you help me out with that or just put on the right direction where can I look an information on that topic?