Correct way to call/use methods/functions from Minecraft source classes?

[Sirpwnsamin]

Hello, Sirpwnsamin here, with another noob question

 

I have a clue on what all these functions do and what I can use them for in my mod, but whenever I try to use them, I get the same error. For example, when I try this;

 

if (EntityPlayer.isSneaking()){

        //do stuff

        }

 

I get the error "Cannot make a static reference to the non-static method isSneaking() from type EntityPlayer"

 

The only quick fix available is to make the method static, which edits a source file and also causes errors in the source file.

 

If anyone could explain to me the correct way to call functions or methods from other source class files, or give me any help at all on this topic, I will be very great full.

[Draco18s]

Step 1:

EntityPlayer player != EntityPlayer

 

Step 2:

Read the javadoc

[ItsTheRuski]

Most of the classes that you are referring to have non-static methods and variables. This mean that you have to have an instance of that class to call those methods on. For example, each player(since they are an instance of the class EntityPlayer) has its own isSneaking() method. Therefore, you have to have an instance of the class you are calling already created in order to use those methods.

 

Also, don't modify base classes. From what I've read on the Mojang page, you cannot modify the code that has already been written: it's illegal to redistribute modified base classes. Instead, make other classes that extends from the base classes and use @Override to modify the methods. Then find a way to implement your classes into the game.

 

To check if you accidentally modified a base class, re-obfuscate your mod(package it) then check the zip file that is created. If you see any classes that you did not write(usually a combination of three lowercase letters) that mean you modified a base class in some way.