williewillus

<?xml version="1.0" encoding="UTF-8"?>
<migrationMap>
  <name value="1.13.2 to 1.14" />
  <description value="1.13.2 to 1.14 MCP changes" />
  <entry oldName="net.minecraft.GameVersion" newName="net.minecraft.util.MinecraftVersion" type="class" />
  <entry oldName="net.minecraft.advancements.AdvancementList.Listener" newName="net.minecraft.advancements.AdvancementList.IListener" type="class" />
  <entry oldName="net.minecraft.advancements.RequirementsStrategy" newName="net.minecraft.advancements.IRequirementsStrategy" type="class" />
  <entry oldName="net.minecraft.advancements.criterion.AbstractCriterionInstance" newName="net.minecraft.advancements.criterion.CriterionInstance" type="class" />
  <entry oldName="net.minecraft.block.Block.EnumOffsetType" newName="net.minecraft.block.Block.OffsetType" type="class" />
  <entry oldName="net.minecraft.block.BlockAbstractBanner" newName="net.minecraft.block.AbstractBannerBlock" type="class" />

Barteks2x

Overview of changes

• net.minecraftforge.fml.common.IWorldGenerator -> net.minecraft.world.gen.feature.Feature
  • No longer needed. I think it should be removed by forge, as it has been superseded by vanilla functionality. See below.
• net.minecraft.world.gen.feature.WorldGenerator -> net.minecraft.world.gen.feature.Feature
  • This would also be the most common replacement of Forge's IWorldGenerator. This should be the solution for anything smaller than a chunk.
  • Except the 8 blocks offset. This is not a thing anymore. Population now works just like any normal person would expect.
  • Position of features is controlled by instances of net.minecraft.world.gen.placement.BasePlacement instead of by the feature itself.
• net.minecraft.world.gen.MapGenBase -> net.minecraft.world.gen.carver.IWorldCarver
• This is now finally exposed to mods in a useful way. As it was mostly hidden from modders before, not eveyone may know what it is, so it will be explained later. Generates caves a

xt9

Notes should be taken with a grain of salt as it's just notes I took during the livestream and since I'm no contributor to forge I cannot attest to the accuracy of facts.

1.13 General

• cpw is rewriting the mod loader and it's going to be merged into 1.13 forge
• 1.13 forge will have java 9 support. (May happen sooner rather than later)
• The mod loader carries a lot of technical debt, which is the reason the load speed is a bit slow, they're working towards improving the performance of the loader.
• Java 10 & 11 support depends on Mojang using it. Go yell at them for support.
• Forge will receive a full audit for 1.13, going over all of the classes for redundancies. Stable 1.13 Forge might take months.
• New coremod system for 1.13, coremods are necessary for forge, but people tend to overuse them right now.
• JavaScript system to modify base classes.