Two much-requested features: Underground Biomes-textured ores, and an option to leave natural stone unchanged.

Texture changes can be done with resource packs.

Configs are now world-specific.

Server configs are automatically downloaded to clients on login. The mod returns to client configs on logout.

Assorted bug fixes: mob griefing allowed, UB stone reasonably affected by explosions.

Special thanks to BBoldt for the overlay textures!

Ore texturing: During chunk generation, Underground Biomes Constructs can replace vanilla ores with UB-textured ores. The option is controlled by the config setting UBifyOres, and the default setting is true or on. Both unmodified and modified blocks can exist in all worlds, so the option can be turned off and on, although this will cause both kinds of ores to exist in the world.

Existing players may wish to set this option to "false" before loading any existing world. Existing blocks aren't changed (sorry, but there would be a substantial performance hit.)

UB Constructs only provides "UBifying" for vanilla ores; however, there is a simple interface for any mod to request that an ore be "UD'd". Three blocks are use for each ore; UB creates, names, and textures them when it get the request. Due to timing issues, this might often have to be done with additional bridge mods.

UB textures: Rather than having multiple versions with different texture sets, there will now be resource packs with various texture packs. The default texture pack is the one most downloaded recently, the 32x32 pack by The Order. There are currently two other packs available: ExterminatorJeff's original 16x16 pack, and Els 128x128 hi-res pack (requires Optifine). I'll put up another hi-res pack by Wreckage shortly.

World-specific configs: Each world has its own config file, stored in the "worldSpecificConfigs" folder in the world save directory. If a world doesn't have a config, it gets the current general config. The config files have the same format as before.

When a player loads any world, the mod switches to the config setting for that world. This includes served worlds; the config setting are transmitted over the network.

Changing config options in one world has no effect on any other, and the general config settings are used only for setting up new worlds, or worlds which haven't had specific config files before.

The only exception is the oredictify option, which can't be changed after loading. The general config setting applies to all worlds for that player.

New features:

Ultrafast generation optionThe InChunkGeneration option allows generation indistinguishable from vanilla. May be shut off for mod incompatibility issues.

Smoothstone and Cobblestone slabs for all stones

API available There is a simple API that allows another mod to get the block ID and metadata UB would generate at a particular block location. Performance should be close to that of UB generation itself if used properly. Even non-optimized use seems fine on my computer.

Smoother strata transitions option There is an option in the config file, "harmoniousStrata" that rearranges the strata layers slightly to stop black-white transitions. Default is off (old strata)

Cobblestone replacement There is an option to replace cobblestone made by world generation with the appropriate UB cobblestone. Stone stairs become oak; making UB stairs during village generation is difficult. Default is off. An addition config setting is available to convert village gravel into brick (default is off.)

Dimension-specific seeds UBC now provides an options to change seeds between dimensions.

Bug fixes and performance improvements for the underlying Underground Biomes mod

Faster Generation UBConstructs now passes blocks by reference inside terrain generation and this speeds up generation by a factor of at least 2. Also, large parts of the generation process were not producing useful effects and are now skipped. On my computer (a 2 year old Mac) UB can almost keep up with flying in creative, and I never have any problems at all while walking around.

Biome size setting works The underground biomes were generating with a biome size of 3 regardless of the size in the config file (= very roughly 128 blocks across). This has been fixed. The size will now be 16 x 2^(configsize), so 16 for 0, 128 for 3, 512 for 5, 16K for 10, and so on. Anything over 21 would make the entire mine craft world, out to block 30,000,000, one single biome. Any value over 21 is set to 3 so if you use an existing config you'll get a distribution with the same character as what you had before.

The default has been changed to 3 (same result as old configs with the current release). At that setting, you will almost always see multiple underground biomes in any outdoor screenshot. If you like seeing large stretches of similar stone, I would recommend a setting of 5, which makes most biome blobs a single type of strata column. A config setting of 5 does mean that most 2K by 2K max zoom maps will be missing a few stone types.

Important: you will get sharp changes between already-generated and newly generated chunks. In my experience this is not generally noticeable (can you see where it happens in my survival journal? I can't.)

Easier vanilla stone recipe The default recipe for UB stone to vanilla stone in new config files has been changed from 4 -> 1 to 4 -> 4. Settings in existing config files will not change.

More normal stone hardnessStone hardnesses have been changed somewhat from earlier versions, as the sedimentary stones were just too soft. Sedimentary stones are harder, about half as hard as vanilla stone, while igneous stones are somewhat softer, about 1.5 times as hard as vanilla stone.

Installation Place the zip file in your mods folder. Remove any other copy of Underground Biomes or Underground Biomes Constructs.

Already-generated chunks will not change; only newly generated chunks can have the new stones. If you have not used Underground Biomes before you might prefer to use the mod only on new worlds; I do. Consult the original mod for documentation.

This is a build from my world. Designed and built with the 32x32 "faithful" Underground Biomes texture pack, which actually changes a few stones, notably rhyolite, which becomes an outstanding decorative stone, and black granite cobblestone, which is so dark it's hard to tell apart from black granite smoothstone. Both are built almost entirely from Underground Biomes stones.

This is my first completed build with the mod. The posts are blue schist walls; the tops of the corner pieces are basalt smoothstone walls; the top of the summit temple is decorated with basalt cobblestone stairs; and the stairs going up are chalk.