IBlockState interface doesn't exist in my project

[Rezanance]

To give you all some context, I'm just a beginner to the Forge Modding API and I'm also new to the Gradle build management tool (I'm used to Maven).

 

A lot examples online refer to the IBlockState interface, but the 'net.minecraft.block.state' doesn't seem to exist in my project's dependencies. Also do people just override the deprecated methods from the Block class (i.e. getRenderType, getShape, getCollisionShape ...) or what?

 

I'm using the latest version of forge for minecraft 1.15.2 - 31.1.27. The reason I'm not using the recommended version (31.1.0) is because when I import the build.gradle file I get this error message:

  Quote

Could not find net.minecraftforge:forge:1.15.2-31.1.0_mapped_snapshot_20190719-1.14.3.

Possible solution:
 - Declare repository providing the artifact, see the documentation at https://docs.gradle.org/current/userguide/declaring_repositories.html
 

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I also attached a screenshot of my code just in case.

Evan Greenstein

 

 

Edited March 21, 2020 by Rezanance
Forgot to mention version of forge being used

[DaemonUmbra]

If you must follow a tutorial, please follow McJTY's tutorial as it is the least terrible one currently.

[ChampionAsh5357]

Please recognize what version of Minecraft you are using before asking about a class. Some classes have been removed, others have been redone, and finally (in your case) some classes have been renamed. The easiest thing to do would've been to open up a source version with IBlockState (e.g. 1.12.2) and then looked at your current version (1.15.2) and then finding what has changed. In this case, a quick look would have told you IBlockState was renamed to BlockState.

 

Second, the Block class methods are usually deprecated since they only check for that specific block. The BlockState class has the same methods without deprecation since they can check for multiple states of that block. Implementing and overriding deprecated methods are usually okay since most are reused in the BlockState. However, when we are calling those methods we should stick to using the BlockState function calls over the Block function calls. Deprecated methods usually are obsolete for similar reasons.

 

Finally, the error message is probably because you most likely did not generate the specific files required for the workspace you are using. Although, you should use the latest versions since they do have some necessary updates that might fix some bugs you run into later on.

[Rezanance]

  On 3/21/2020 at 4:41 AM, ChampionAsh5357 said:

Please recognize what version of Minecraft you are using before asking about a class. Some classes have been removed, others have been redone, and finally (in your case) some classes have been renamed. The easiest thing to do would've been to open up a source version with IBlockState (e.g. 1.12.2) and then looked at your current version (1.15.2) and then finding what has changed. In this case, a quick look would have told you IBlockState was renamed to BlockState.

 

Second, the Block class methods are usually deprecated since they only check for that specific block. The BlockState class has the same methods without deprecation since they can check for multiple states of that block. Implementing and overriding deprecated methods are usually okay since most are reused in the BlockState. However, when we are calling those methods we should stick to using the BlockState function calls over the Block function calls. Deprecated methods usually are obsolete for similar reasons.

 

Finally, the error message is probably because you most likely did not generate the specific files required for the workspace you are using. Although, you should use the latest versions since they do have some necessary updates that might fix some bugs you run into later on.

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Thank you so much for taking the time to answer my question! It really helped! However I read online though that the setupDecompWorkspace gradle executable doesn't exist anymore. What do you mean by generating the specific files? What gradle command do I use to accomplish that?

Edited March 21, 2020 by Rezanance

[Draco18s]

  On 3/21/2020 at 2:31 PM, Rezanance said:

What do you mean by generating the specific files? What gradle command do I use to accomplish that?

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In your IDE under "referenced files" you will find the vanilla and forge source files.

[Rezanance]

  On 3/21/2020 at 3:11 PM, Draco18s said:

In your IDE under "referenced files" you will find the vanilla and forge source files.

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So you're saying that I don't have to do anything to generate them? They're already there right? I'm sort of confused haha

[Draco18s]

Sort of, if you ran the setup command already, then yes. If no, then you need to run the setup command.