Title says it all, I'd like to spawn some vanilla particles (those fire looking ones from spawners) at a certain coordinate.

This is for adding a visual effect around an arrow as it flies, so I was thinking I could spawn particles at the arrow's coordinate position at every tick. 

it looks like the particles for the spawner are created in the net.minecraft.world.spawner.AbstractSpawner class. Check out how they do it there, in the tick() method as far as I can tell.

 

Vanilla classes are a good reference for a ton of things

Edited June 24, 20205 yr by Ugdhar

world.addParticle

6 hours ago, Ugdhar said:

it looks like the particles for the spawner are created in the net.minecraft.world.spawner.AbstractSpawner class. Check out how they do it there, in the tick() method as far as I can tell.

 

Vanilla classes are a good reference for a ton of things

  

4 minutes ago, poopoodice said:

world.addParticle

 

Hey, this is how I'm trying to do it so far. 

    @Override
    public void tick() {
        super.tick();
        this.world.addParticle(ParticleTypes.FLAME, this.getPosX(), this.getPosY(), this.getPosZ(), 0.0, 0.0, 0.0);
        System.out.println("DEBUG: arrow tick");
    }

My full class for my arrow: https://pastebin.com/41jCRgYu

The particle's aren't showing, but the debug message is printing.

Also, I'm not really sure what the particle speed values mean? On AbstractSpawner they're all set to 0 so that's what I did.

Edited June 25, 20205 yr by thomask

This is the way I've been able to do it, I found it somewhere in the vanilla code and it's worked ever since.

 

In the tick() method you could have something like...

 

if (!this.world.isRemote()) {
    //ANY POSITION YOU WANT HERE
    Vec3d pos = this.creature.getPositionVec();
    //SPAWN THE PARTICLE
    ((ServerWorld) this.world).spawnParticle(ParticleTypes.HEART, pos.getX(), pos.getY(), pos.getZ(), 1, 0, 0, 0, (double) 0.01F);
    
}

 

Another example is the Tamable entity, how when you right-click it you get 7 hearts randomly float up

 

for(int i = 0; i < 7; ++i) {
   double d0 = this.rand.nextGaussian() * 0.02D;
   double d1 = this.rand.nextGaussian() * 0.02D;
   double d2 = this.rand.nextGaussian() * 0.02D;
   this.world.addParticle(ParticleTypes.HEART, this.getPosXRandom(1.0D), this.getPosYRandom() + 0.5D, this.getPosZRandom(1.0D), d0, d1, d2);
}

 

You would have to find the particle your looking for in ParticleTypes i guess. And I think your position should be the blocks center position plus a random variation of -0.5 to 0.5 on every axis

Howdy

 

This working example of particles might be helpful

https://github.com/TheGreyGhost/MinecraftByExample/tree/master/src/main/java/minecraftbyexample/mbe50_particle

-TGG