Jump to content

1.12 What are these things in ReflectionHelper? {field_74516_a, field_74512_d, field_74512_e} etc.


Recommended Posts

I have revived a mod from 1.8 due to requests. It has reflections in it which i'm currently new, https://pastebin.com/TjJmQr2r

I am currently having this one below in the console:

 private static final Field keybindArrayField = ReflectionHelper.findField(KeyBinding.class, "keybindArray", "field_74516_a");

I also noticed that keyBindArray are all capital letters in 1.12 while small letters in 1.8 and I also noticed that it is not just a list anymore but a hashMap some sort. I also think it has something to do with these: field_74516_a.

Link to comment
Share on other sites

1 hour ago, TheRPGAdventurer said:

esper can't be acessed


Then you can look for the MCP mapping CSV files in the Gradle cache (~/.gradle or %USERPROFILE%\.gradle); these map SRG names to MCP names. 


I don't have the full path with me, but look for de/oceanlabs/mcp.

  • Like 1

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

Link to comment
Share on other sites

The CSV files can also be downloaded from http://export.mcpbot.bspk.rs/


I also find https://github.com/bspkrs/MCPMappingViewer very handy - a Java-based GUI to search for MCP symbols.


As for the changes in KeyBinding, there's no simple solution there other than to study the KeyBinding class in 1.8 and 1.12.2 and work out why the keybinds changed from a list to a map.  It's almost certain that the mod's code will need to be adjusted in some way to account for it, although if the mod was simply using it to iterate over, it might be a fairly simple change.

  • Like 1
Link to comment
Share on other sites

  • 2 weeks later...

When the classis put in the keybind_array HashMap how do I remove it?

   *  Create an Interceptor based on an existing binding.
   *  The initial interception mode is OFF.
   *  If existingKeyBinding is already a KeyBindingInterceptor, a reinitialised copy will be created but no further effect.
   * @param existingKeyBinding - the binding that will be intercepted.
  public KeyBindingInterceptor(KeyBinding existingKeyBinding)
    super(existingKeyBinding.getKeyDescription(), existingKeyBinding.getKeyCode(), existingKeyBinding.getKeyCategory());
    try {
      // the base constructor automatically adds the class to the keybindArray and hash, which we don't want, so undo it
        HashMap reflectkeybindArray = (HashMap) keybindArrayField.get(this);
        reflectkeybindArray.remove(keyDescriptionField, this);

//      List reflectkeybindArray = (List) keybindArrayField.get(this);
//      reflectkeybindArray.remove(this); 

      pressedField.setBoolean(this, false);
      pressTimeField.setInt(this, 0);
//      this.pressed = false;
//      this.pressTime = 0;

    } catch (Exception e) {
      throw Throwables.propagate(e);
    this.interceptionActive = false;
    this.interceptedPressTime = 0;

    if (existingKeyBinding instanceof KeyBindingInterceptor) {
      interceptedKeyBinding = ((KeyBindingInterceptor)existingKeyBinding).getOriginalKeyBinding();
    } else {
      interceptedKeyBinding = existingKeyBinding;


in List it was easy because they just used List#add() but they used put in 1.12 and put has 2 params? would we use the remove method that has 2 params?



 public KeyBinding(String description, int keyCode, String category)
        this.keyDescription = description;
        this.keyCode = keyCode;
        this.keyCodeDefault = keyCode;
        this.keyCategory = category;
        hash.addKey(keyCode, this);


public KeyBinding(String description, int keyCode, String category)
        this.keyDescription = description;
        this.keyCode = keyCode;
        this.keyCodeDefault = keyCode;
        this.keyCategory = category;
        KEYBIND_ARRAY.put(description, this);
        HASH.addKey(keyCode, this);


Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.