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Find and report player position in Minecraft save file

/ Published in: Java
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  1. import java.io.FileInputStream;
  2.  
  3. /**
  4.  * 
  5.  * @author jkerr88
  6.  *
  7.  * You need the code from here:
  8.  *
  9.  *  http://www.minecraftwiki.net/wiki/NBT_class
  10.  *  
  11.  * saved as Tag.java in the same folder as this one.  This file should be saved as ReportPlayerLocation.java
  12.  * 
  13.  */
  14. public class ReportPlayerLocation implements Runnable{
  15.  
  16.    static ReportPlayerLocation iThis;
  17.    static String isCurrentFile;
  18.  
  19.    public static void main(String argv[]){
  20.  
  21.       iThis = new ReportPlayerLocation();
  22.       Thread t = new Thread(iThis);    
  23.       t.start();
  24.  
  25.    } // main
  26.  
  27.    public void run() {     
  28.  
  29.       String sWorldFolder = "C:\\Documents and Settings\\Jeff\\Application Data\\.minecraft\\saves\\World1";
  30.  
  31.       try{
  32.  
  33.          Tag datFileTag = Tag.readFrom(new FileInputStream(sWorldFolder + "\\level.dat"));
  34.          reportPlayerPositionFromTag(datFileTag);
  35.  
  36.       }catch(Exception e){
  37.          System.out.println(e);
  38.          return;   
  39.       }
  40.  
  41.       System.out.println("\nDone!");
  42.  
  43.    } 
  44.  
  45.  
  46.    private void reportPlayerPositionFromTag(Tag p_tag){
  47.  
  48.       Tag.Type type = p_tag.getType();
  49.       if (type == Tag.Type.TAG_End)
  50.          return;
  51.  
  52.       String sName = p_tag.getName();
  53.  
  54.       if (type == Tag.Type.TAG_Byte_Array) {
  55.  
  56.       } else if (type == Tag.Type.TAG_List) {
  57.          Tag[] subtags = (Tag[]) p_tag.getValue();
  58.          for (Tag st : subtags) {
  59.             reportPlayerPositionFromTag(st);
  60.          }
  61.  
  62.          if(sName.equals("Pos")){
  63.             System.out.println("Found Player Pos: (X is NS, Y is Altitude, Z is EW");
  64.  
  65.             Double nX = (Double) subtags[0].getValue();
  66.             Double nY = (Double) subtags[1].getValue();
  67.             Double nZ = (Double) subtags[2].getValue();
  68.  
  69.             System.out.println("X: " + Math.round(nX.doubleValue()));
  70.             System.out.println("Y: " + Math.round(nY.doubleValue()));
  71.             System.out.println("Z: " + Math.round(nZ.doubleValue()));
  72.  
  73.             System.out.println("\nChunk: (x/16, z/16)");
  74.  
  75.             System.out.println("xPos: " + Math.floor(nX.doubleValue()/16));
  76.             System.out.println("zPos: " + Math.floor(nZ.doubleValue()/16));
  77.  
  78.          }
  79.  
  80.       } else if (type == Tag.Type.TAG_Compound) {
  81.          Tag[] subtags = (Tag[]) p_tag.getValue();
  82.          for (Tag st : subtags) {
  83.             reportPlayerPositionFromTag(st);
  84.          }
  85.       } else {
  86.  
  87.       }
  88.  
  89.    }
  90.  
  91. }

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