Is there a best practice for resolving Block IDs when working with multiple mods?

Question

Ok I'm setting up a Minecraft vanilla server (i.e. Mojang server, not Bukkit) with Red Power 2, Industrial Craft 2 and Build Craft 2.2 Red Power and Industrial Craft work together nicely. However, after installing the BuildCraft mod, I get this server error:

java.lang.RuntimeException: RedPowerCore: BlockID 148 occupied by buildcraft.transport.LegacyBlock, autoAssign is disabled.
    at forge.MinecraftForge.killMinecraft(MinecraftForge.java:483)
    at eloraam.core.Config.getBlockID(Config.java:114)
    at RedPowerControl.initialize(RedPowerControl.java:21)
    at mod_RedPowerControl.initialize(mod_RedPowerControl.java:37)
    at mod_RedPowerControl.modsLoaded(mod_RedPowerControl.java:18)
    at cpw.mods.fml.server.ModLoaderModContainer.postInit(ModLoaderModContainer.java:277)
    at cpw.mods.fml.common.Loader.postModInit(Loader.java:236)
    at cpw.mods.fml.common.Loader.initializeMods(Loader.java:540)
    at cpw.mods.fml.server.FMLServerHandler.onLoadComplete(FMLServerHandler.java:127)
    at net.minecraft.server.MinecraftServer.s(MinecraftServer.java:203)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:411)
    at dn.run(SourceFile:492)

How do I go about resolving this ID block conflict? Is there a good way to do this or a bad way I should avoid? Is solving this a case by case basis? (i.e. different depending on mods) or is there a file I edit every time to fix this?

Thanks in advance.

Answer 1

Let me take the time to point you to the tekkit mod pack which has not just those mods but much much more (if you don't want the extras, its not like you have to use them).

You can find it here. Just install the launcher and select the modpack you want (tekkit). After that, go back to the website and go to the tekkit tab and download the server.

I know it's a modified version of bukkit, but you don't have to install plugins. Then if you decide one day you want an auto back-up plugin you'll already be on bukkit.

Answer 2

Sequential IDs

Many mods expect their block IDs to be sequential. So, when resolving block ID conflicts via config files with sequential IDs, always make sure that you move all the IDs together to maintain their original sequence.

"Low" and "high" IDs

Minecraft uses block IDs 0-255 for blocks that appear during world generation. Block IDs above 255 can't be placed during chunk generation. When resolving block IDs, make sure IDs 255 and below stay in that range and make sure to not use IDs below 255 for blocks that don't need low block IDs; there aren't enough of them to waste on blocks that don't need them.

IDs stay in the save files

Always change IDs before world generation. The save file stores the ID of blocks and nothing else that ties them to the "right" block. So if you change the block ID of Basalt (from RP2) and try to play in an existing world, all your old Basalt blocks will suddenly be something else – whatever it is you gave that ID to.

Answer 3

The easiest way is to get NEI (Not Enough Items). After you have it installed, open your inventory and click options. Then go to Block/Item ID Options, and then click dump ID map now. It will then say where it saved the file. Find it and then open it. It will then show the used and unused IDs. You can use this to find IDs that you can use. Next, find the config folder in your Minecraft root directory. In the config, look for file for the mod causing the problem. You should then be able to change the IDs (you may have to re-configure the IDs for a different mod if it doesn't let you change IDs). Note that you may have to temporarily remove the mod causing the problems to be able to launch the game to get the ID map.

Answer 4

The 4096 Fix allows you to set certain blocks at different IDs up to a limit of 4096, this should be enough to cover all the mods you have.

Scroll down to the 'tweaks' section to get the server and bukkit versions of this mod.

Answer 5

The ID Resolver mod for Minecraft Forge seems to do what you want. From the picture, it seems that there are a variety of settings to choose from every time you install a new mod.