content: package net.minecraft.client.particle;
  
  import net.minecraft.world.World;
  
  public class EntityAuraFX extends EntityFX {
      protected EntityAuraFX(World worldIn, double xCoordIn, double yCoordIn, double zCoordIn, double xSpeedIn, double ySpeedIn, double speedIn) {
          super(worldIn, xCoordIn, yCoordIn, zCoordIn, xSpeedIn, ySpeedIn, speedIn);
          float f = this.rand.nextFloat() * 0.1F + 0.2F;
          this.particleRed = f;
          this.particleGreen = f;
          this.particleBlue = f;
          this.setParticleTextureIndex(0);
          this.setSize(0.02F, 0.02F);
          this.particleScale *= this.rand.nextFloat() * 0.6F + 0.5F;
          this.motionX *= 0.019999999552965164D;
          this.motionY *= 0.019999999552965164D;
          this.motionZ *= 0.019999999552965164D;
          this.particleMaxAge = (int) (20.0D / (Math.random() * 0.8D + 0.2D));
          this.noClip = true;
      }
  
      public void onUpdate() {
          this.prevPosX = this.posX;
          this.prevPosY = this.posY;
          this.prevPosZ = this.posZ;
          this.moveEntity(this.motionX, this.motionY, this.motionZ);
          this.motionX *= 0.99D;
          this.motionY *= 0.99D;
          this.motionZ *= 0.99D;
  
          if (this.particleMaxAge-- <= 0) {
              this.setDead();
          }
      }
  
      public static class Factory implements IParticleFactory {
          public EntityFX getEntityFX(int particleID, World worldIn, double xCoordIn, double yCoordIn, double zCoordIn, double xSpeedIn, double ySpeedIn, double zSpeedIn, int... p_178902_15_) {
              return new EntityAuraFX(worldIn, xCoordIn, yCoordIn, zCoordIn, xSpeedIn, ySpeedIn, zSpeedIn);
          }
      }
  
      public static class HappyVillagerFactory implements IParticleFactory {
          public EntityFX getEntityFX(int particleID, World worldIn, double xCoordIn, double yCoordIn, double zCoordIn, double xSpeedIn, double ySpeedIn, double zSpeedIn, int... p_178902_15_) {
              EntityFX entityfx = new EntityAuraFX(worldIn, xCoordIn, yCoordIn, zCoordIn, xSpeedIn, ySpeedIn, zSpeedIn);
              entityfx.setParticleTextureIndex(82);
              entityfx.setRBGColorF(1.0F, 1.0F, 1.0F);
              return entityfx;
          }
      }
  }
  