How to override base minecraft code

tminor1 · August 19, 2014

Hi so before I started using forge to make my mod pack I used MCP Which allowed me to make mods by base editing. However my mods would only work for the sever and I could not do all the things I wanted to do. So I started using forge so I could do more and make my mods work on both server and client. The thing is now I need to know how I can override base minecraft code with forge so I can include my old mods in to my new mod pack. Some of my mods include making glass drop its self when destroyed with out a silktouch pickaxe, making a boat drop 5 planks if it smashes in to something that causes it to break so you can re-make i with ease, making some of the mobs drop more Xp when killed, making some of the command names shorter for faster typing them, and allowing people in survival mode to fly. How can I override base minecraft code so I can bring my old mods to work with forge?

tofer17 · August 19, 2014

In my experiences I've seen other mods that create their own versions of those things. For example "MyBoat" which extends the vanilla class and/or whatnot except that it drops as you desire. There are implications about how it gets crafted and so forth, I guess.

Alternatively, I just started playing with it, you can investigate "MinecraftForge.EVENT_BUS" and perhaps there's an event you can listen for and, to it, respond as you desire when the situation merits.

Were I you I would steer clear of overriding the base Minecraft code since who knows when/if/what will change from release to release. IMO, that's not the way to go and is, in fact, what Forge helps establish (that is, a means to make mods work release to release as much as possible with less impact).

I am not sure if that helps except to provide some avenues to explore, and maybe others have better ideas, too

KeeperofMee · August 19, 2014

All the mods you had are possible to easily recreate in forge without base edits.

tminor1 · August 20, 2014

All the mods you had are possible to easily recreate in forge without base edits.

Ok then but how would I go about doing that? So lets start with the glass drop mod how can I tell minecraft to make glass drop itself when mined with out silk touch? Also, how would I make obsidian quicker to mine?

shieldbug1 · August 20, 2014

For glass you'd look at BlockEvent.BreakEvent. Just do your logic there.

For obsidian there's PlayedEvent.BreakSpeed or something like that.

I suggest you read on forge events.

tminor1 · August 21, 2014

Ok. So to do that would I go in my main mod class and do this?

@EventHandler

public void (BlockEvent.BreakEvent event)

If so then what would I do? And where is it that I can read about forge events?

jabelar · August 22, 2014

Ok. So to do that would I go in my main mod class and do this?

@EventHandler

public void (BlockEvent.BreakEvent event)

If so then what would I do? And where is it that I can read about forge events?

No, the @EventHandler is for certain types of events, but not the BreakEvent. You can read more to understand better my tutorial here: http://jabelarminecraft.blogspot.com/p/minecraft-forge-172-event-handling.html

Tslat · August 22, 2014

Searching "Forge events" on google gave me"

1. http://www.minecraftforge.net/wiki/Event_Reference

2. http://www.minecraftforum.net/forums/archive/tutorials/931112-forge-4-x-events-howto

3. http://minecraftforgetutorials.weebly.com/event-introduction.html

4. http://www.wuppy29.com/minecraft/modding-tutorials/wuppys-minecraft-forge-modding-tutorials-for-1-7-events/#sthash.rNLdxnz4.dpbs

tminor1 · August 23, 2014

Ok lets start over. I believe I will understand better if some one can give me an example. So lets do the glass drop mod. Can someone give me an example of how I would make glass drop itself when broken without silcktouch?

Tslat · August 24, 2014

If you're searching for copy->paste code, you won't find it here

If there's been a plethora of links posted so far, if you can't figure it out from them, you need to learn java some more before you attempt making mods.

Use an IDE (like Eclipse), and try some code out for yourself.

No-one here will give you code to paste, as we aren't making the mods for you.

theOriginalByte · August 24, 2014

If you're searching for copy->paste code, you won't find it here

If there's been a plethora of links posted so far, if you can't figure it out from them, you need to learn java some more before you attempt making mods.

Use an IDE (like Eclipse), and try some code out for yourself.

No-one here will give you code to paste, as we aren't making the mods for you.

It's pretty obvious he knows how to mod since he used MCP to make base edits before forge was the standard... He wants to know how to use the event... telling someone to go find it on their own isn't helpful at all... it would be more productive if you would just take the few minutes to explain it to him since I assume you know how to do it...

jabelar · August 24, 2014

If you're searching for copy->paste code, you won't find it here

If there's been a plethora of links posted so far, if you can't figure it out from them, you need to learn java some more before you attempt making mods.

Use an IDE (like Eclipse), and try some code out for yourself.

No-one here will give you code to paste, as we aren't making the mods for you.

It's pretty obvious he knows how to mod since he used MCP to make base edits before forge was the standard... He wants to know how to use the event... telling someone to go find it on their own isn't helpful at all... it would be more productive if you would just take the few minutes to explain it to him since I assume you know how to do it...

But we literally gave him 5 links on how to use events, all of which have plenty of examples! I already took the time to write several pages of explanation in my tutorial linked above so I don't have to write it over and over again each time someone asks the same questions.

Basically we're saying "we've already written you pages and pages of explanation". Go read it and try something. Then we'll be willing to help.

tminor1 · August 24, 2014

Ok well I tried to make something work but can't figure it out.

package net.Cristalore.mod;

import net.minecraftforge.event.world.BlockEvent;

public class glassDrop {

@ForgeSubscribe
public void blockBreak(BlockEvent.BreakEvent event)
{

}

It says that @ForgeSubscribe cannot be resolved to a type. I am trying to make the glassDrop mod.

jabelar · August 25, 2014

@ForgeSubscribe was used for 1.6.4 I think but for 1.7.x you should use @SubscribeEvent instead. You use it in same way (annotation before the method).

tminor1 · August 25, 2014

Would something like this work? I tried to do this and minecraft crashed. Am I on the right track or have I just completely messed up?

package net.Cristalore.mod;

import java.util.Random;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;

import net.minecraft.block.BlockGlass;

import net.minecraft.block.material.Material;

import net.minecraft.init.Blocks;

import net.minecraft.item.Item;

import net.minecraftforge.event.world.BlockEvent;

public class glassDrop extends BlockGlass {

public glassDrop(Material p_i45408_1_, boolean p_i45408_2_) {

super(p_i45408_1_, p_i45408_2_);

// TODO Auto-generated constructor stub

}

@SubscribeEvent

public void blockBreak(BlockEvent.BreakEvent event)

{

}

public Item getItemDropped(int p_149650_1_, Random p_149650_2_, int p_149650_3_)

{

return Item.getItemFromBlock(Blocks.glass);

}

jabelar · August 26, 2014

Well the break block event handler method shouldn't be in your actual block, but instead probably best to make an event handler class and put it in there. Because the break block event will be fired for EVERY block that breaks. So what you need to do in that method is check which block got broken and then proceed from there.

The event handling code there shouldn't crash things (it doesn't even do anything). So it must be something else. What is the crash log say?

tminor1 · August 26, 2014

Well as for making a class file for the event that is what I was trying to do and the reason I have the part of the code for the glass in there is because I didn't know what I needed to do to make it check to see if you destroyed a glass block and there for drop a glass block. as for the crash report here it is.

---- Minecraft Crash Report ----

// Don't be sad, have a hug! <3

Time: 8/25/14 3:49 PM

Description: Initializing game

java.lang.NullPointerException: Initializing game

at net.minecraft.block.Block.<init>(Block.java:462)

at net.minecraft.block.BlockBreakable.<init>(BlockBreakable.java:19)

at net.minecraft.block.BlockGlass.<init>(BlockGlass.java:15)

at net.Cristalore.mod.glassDrop.<init>(glassDrop.java:15)

at net.Cristalore.mod.cristalore.<init>(cristalore.java:34)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

at java.lang.reflect.Constructor.newInstance(Unknown Source)

at java.lang.Class.newInstance(Unknown Source)

at cpw.mods.fml.common.ILanguageAdapter$JavaAdapter.getNewInstance(ILanguageAdapter.java:173)

at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:486)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

at com.google.common.eventbus.EventBus.post(EventBus.java:267)

at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)

at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

at com.google.common.eventbus.EventBus.post(EventBus.java:267)

at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)

at cpw.mods.fml.common.Loader.loadMods(Loader.java:491)

at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:204)

at net.minecraft.client.Minecraft.startGame(Minecraft.java:522)

at net.minecraft.client.Minecraft.run(Minecraft.java:892)

at net.minecraft.client.main.Main.main(Main.java:112)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

A detailed walkthrough of the error, its code path and all known details is as follows:

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-- Head --

Stacktrace: