content: package net.minecraft.client.audio;
  
  import net.minecraft.entity.item.EntityMinecart;
  import net.minecraft.util.MathHelper;
  import net.minecraft.util.ResourceLocation;
  
  public class MovingSoundMinecart extends MovingSound {
      private final EntityMinecart minecart;
      private float distance = 0.0F;
  
      public MovingSoundMinecart(EntityMinecart minecartIn) {
          super(new ResourceLocation("minecraft:minecart.base"));
          this.minecart = minecartIn;
          this.repeat = true;
          this.repeatDelay = 0;
      }
  
      public void update() {
          if (this.minecart.isDead) {
              this.donePlaying = true;
          } else {
              this.xPosF = (float) this.minecart.posX;
              this.yPosF = (float) this.minecart.posY;
              this.zPosF = (float) this.minecart.posZ;
              float f = MathHelper.sqrt_double(this.minecart.motionX * this.minecart.motionX + this.minecart.motionZ * this.minecart.motionZ);
  
              if ((double) f >= 0.01D) {
                  this.distance = MathHelper.clamp_float(this.distance + 0.0025F, 0.0F, 1.0F);
                  this.volume = 0.0F + MathHelper.clamp_float(f, 0.0F, 0.5F) * 0.7F;
              } else {
                  this.distance = 0.0F;
                  this.volume = 0.0F;
              }
          }
      }
  }
  