Miner Zombie dig code

public static void tryDig(EntityCreature entityliving, EntityLiving entityliving1) {
       if(entityliving1 == null) {
           return;
       }

       float f = 2.0F;
       float f1 = entityliving.prevRotationPitch + (entityliving.rotationPitch - entityliving.prevRotationPitch) * f;
       float f2 = entityliving.prevRotationPitch + (entityliving.rotationPitch - entityliving.prevRotationPitch) * f;
       f1 = 0.0F;
       float f3 = entityliving.prevRotationYaw + (entityliving.rotationYaw - entityliving.prevRotationYaw) * f;
       int i = (int)Math.floor((double)(f3 / 90F) + 0.5D);
       f3 = (float)i * 90F;
       double d = entityliving.prevPosX + (entityliving.posX - entityliving.prevPosX) * (double)f;
       double d1 = (entityliving.prevPosY + (entityliving.posY - entityliving.prevPosY) * (double)f + 1.6200000000000001D) - (double)entityliving.yOffset;
       double d2 = entityliving.prevPosZ + (entityliving.posZ - entityliving.prevPosZ) * (double)f;
       Vec3D vec3d = Vec3D.createVector(d, d1, d2);
       float f4 = MathHelper.cos(-f3 * 0.01745329F - 3.141593F);
       float f5 = MathHelper.sin(-f3 * 0.01745329F - 3.141593F);
       float f6 = -MathHelper.cos(-f1 * 0.01745329F - 0.7853982F);
       float f7 = MathHelper.sin(-f1 * 0.01745329F - 0.7853982F);
       float f8 = f5 * f6;
       float f9 = f7;
       float f10 = f4 * f6;
       entityliving.info = f3;
       double d3 = 1.0D;
       double d4 = 1.8D;
       double d5 = 0.050000000000000003D;
       Vec3D vec3d1 = vec3d.addVector((double)f8 * d3, (double)f9 * d3, (double)f10 * d3);
       MovingObjectPosition movingobjectposition = entityliving.worldObj.rayTraceBlocks_do(vec3d, vec3d1, true);

       if(movingobjectposition == null) {
           return;
       }

       int j = MathHelper.floor_float((float)(entityliving.posX - entityliving1.posX));
       int k = (int)(entityliving.posY - entityliving1.posY);
       int l = MathHelper.floor_float((float)(entityliving.posZ - entityliving1.posZ));
       boolean flag = false;

       if(j + l > 0) {
           if((float)(k / (j + l)) > 1.0F) {
               flag = true;
           }
       } else if(k > 2) {
           flag = true;
       }

       if(movingobjectposition.typeOfHit == EnumMovingObjectType.TILE || flag) {
           int i2 = f2 >= -20F ? 0 : 1;
           int i1;
           int j1;
           int k1;

           if(flag) {
               i1 = (int)entityliving.posX;
               j1 = (int)entityliving.posZ - 1;
               k1 = (int)entityliving.posZ;
           } else {
               i1 = movingobjectposition.blockX;
               j1 = movingobjectposition.blockY + i2;
               k1 = movingobjectposition.blockZ;
           }

           int l1 = entityliving.worldObj.getBlockId(i1, j1, k1);

           if(l1 == 0 && (i2 == 1 || flag)) {
               j1--;
               l1 = entityliving.worldObj.getBlockId(i1, j1, k1);

               if(l1 == 0 && i2 == 1) {
                   j1--;
                   l1 = entityliving.worldObj.getBlockId(i1, j1, k1);
               }
           }

           if(i1 != entityliving.curBlockX || j1 != entityliving.curBlockZ) {
               entityliving.curBlockDmg = 0.0F;
               entityliving.curBlockX = i1;
               entityliving.curBlockZ = j1;
           }

           Block block = Block.blocksList[l1];
           float f11 = MiningZombieDigPower.get() * (float)(entityliving.nearbyMinerCount + 1);

           if(block != null) {
               if(entityliving instanceof EntityZombieMiner) {
                   ((EntityZombieMiner)entityliving).swingArm = true;
               }

               double d6 = (double)f8 * d5;
               double d7 = (double)f9 * d5;
               double d8 = (double)f10 * d5;

               for(int j2 = 0; j2 <= (int)entityliving.curBlockDmg; j2++) {
                   entityliving.worldObj.spawnParticle("explode", d + ((double)f8 * d4 + (double)(entityliving.worldObj.rand.nextFloat() * (entityliving.curBlockDmg / 10F))), d1 + (double)f9 * d4 + 0.0D + (double)((entityliving.worldObj.rand.nextFloat() * entityliving.curBlockDmg) / 10F), d2 + ((double)f10 * d4 + (double)((entityliving.worldObj.rand.nextFloat() * entityliving.curBlockDmg) / 10F)), 0.0D, 0.0D, 0.0D);
               }

               mc.effectRenderer.addBlockHitEffects((int)i1, (int)j1, (int)k1, 0);

               entityliving.worldObj.playSoundAtEntity(entityliving, "step.stone", 1.0F, 1.0F / (entityliving.worldObj.rand.nextFloat() * 0.4F + 0.8F));
               entityliving.curBlockDmg += f11 / (float)block.blockHardness;

               if(entityliving.getDistanceToEntity(theplayer) >= 17F);

               if(entityliving.curBlockDmg > 10F) {
                   entityliving.curBlockDmg = 0.0F;
                   mc.effectRenderer.addBlockDestroyEffects((int)i1, (int)j1, (int)k1, 1, 0);
                   entityliving.worldObj.spawnParticle("flame", d + (double)f8 * d4, d1 + (double)f9 * d4, d2 + (double)f10 * d4, d6 / 2D, d7 / 2D, d8 / 2D);
                   entityliving.worldObj.setBlockWithNotify(i1, j1, k1, 0);
                   mineComplete(entityliving);
                   entityliving.nearbyMinerCount = 0;
                   Object obj = null;
                   List list = entityliving.worldObj.getEntitiesWithinAABBExcludingEntity(entityliving, entityliving.boundingBox.expand(2D, 2D, 2D));

                   if(list != null) {
                       for(int k2 = 0; k2 < list.size(); k2++) {
                           Entity entity = (Entity)list.get(k2);

                           if(entity instanceof EntityCreature) {
                               entityliving.nearbyMinerCount++;
                               mineComplete((EntityCreature)entity);
                           }
                       }
                   }
               }

               if(entityliving.worldObj.getBlockMaterial(i1, j1, k1) != Material.ground) {
                   if(entityliving.worldObj.getBlockMaterial(i1, j1, k1) != Material.rock);
               }
           }
       }
   }