Minecraft Forums

I just finished writing a program that decompresses and decodes level.dat, so I figured I'd post the changes to it since the wiki isn't very current. The following is a real world example of one of my level.dat files, data and all. Enjoy:

TAG_Compound(""): 1 entries
{
  TAG_Compound("Data"): 14 entries
  {
    TAG_Byte("thundering"): 1
    TAG_Long("LastPlayed"): 1304235720566
    TAG_Compound("Player"): 16 entries
    {
      TAG_Short("SleepTimer"): 0
      TAG_List("Motion"):  3 entries of type TAG_Double
      {
        TAG_Double: 0.000577022212071481
        TAG_Double: -0.0784000015258789
        TAG_Double: -0.000306132557696616
      }
      TAG_Byte("OnGround"): 1
      TAG_Short("HurtTime"): 0
      TAG_Short("Health"): 10
      TAG_Int("Dimension"): 0
      TAG_Short("Air"): 300
      TAG_List("Inventory"):  14 entries of type TAG_Compound
      {
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 256
          TAG_Short("Damage"): 54
          TAG_Byte("Count"): 1
          TAG_Byte("Slot"): 0
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 257
          TAG_Short("Damage"): 169
          TAG_Byte("Count"): 1
          TAG_Byte("Slot"): 1
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 50
          TAG_Short("Damage"): 0
          TAG_Byte("Count"): 31
          TAG_Byte("Slot"): 2
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 267
          TAG_Short("Damage"): 0
          TAG_Byte("Count"): 1
          TAG_Byte("Slot"): 3
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 4
          TAG_Short("Damage"): 0
          TAG_Byte("Count"): 60
          TAG_Byte("Slot"): 4
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 325
          TAG_Short("Damage"): 0
          TAG_Byte("Count"): 1
          TAG_Byte("Slot"): 6
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 325
          TAG_Short("Damage"): 0
          TAG_Byte("Count"): 1
          TAG_Byte("Slot"): 7
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 263
          TAG_Short("Damage"): 0
          TAG_Byte("Count"): 64
          TAG_Byte("Slot"): 17
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 257
          TAG_Short("Damage"): 0
          TAG_Byte("Count"): 1
          TAG_Byte("Slot"): 19
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 280
          TAG_Short("Damage"): 0
          TAG_Byte("Count"): 63
          TAG_Byte("Slot"): 26
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 257
          TAG_Short("Damage"): 0
          TAG_Byte("Count"): 1
          TAG_Byte("Slot"): 28
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 309
          TAG_Short("Damage"): 7
          TAG_Byte("Count"): 1
          TAG_Byte("Slot"): 100
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 308
          TAG_Short("Damage"): 7
          TAG_Byte("Count"): 1
          TAG_Byte("Slot"): 101
        }
        TAG_Compound: 4 entries
        {
          TAG_Short("id"): 306
          TAG_Short("Damage"): 7
          TAG_Byte("Count"): 1
          TAG_Byte("Slot"): 103
        }
      }
      TAG_List("Pos"):  3 entries of type TAG_Double
      {
        TAG_Double: 29.3372731642413
        TAG_Double: 13.6200000047684
        TAG_Double: -43.7951336824104
      }
      TAG_Short("AttackTime"): 0
      TAG_Byte("Sleeping"): 0
      TAG_Short("Fire"): -20
      TAG_Float("FallDistance"): 0
      TAG_List("Rotation"):  2 entries of type TAG_Float
      {
        TAG_Float: 1320.6
        TAG_Float: 22.05004
      }
      TAG_Int("Score"): 0
      TAG_Short("DeathTime"): 0
    }
    TAG_Long("RandomSeed"): -1114392131998688374
    TAG_Int("version"): 19132
    TAG_Long("Time"): 1437547
    TAG_Byte("raining"): 0
    TAG_Int("SpawnX"): 95
    TAG_Int("thunderTime"): 793
    TAG_Int("SpawnY"): 64
    TAG_Int("SpawnZ"): -31
    TAG_String("LevelName"): World2
    TAG_Long("SizeOnDisk"): 4933242
    TAG_Int("rainTime"): 69339
  }
}

As you can see, there are a few new weather related fields in there. Anyway, figured it might be useful to someone.

Delerium

Can you upload the program or even better upload the source? And in which programming language did you write it in?