Java Edition pre-Classic rd-131655

rd-131655 is the eighth unreleased pre-Classic version officially known as Cave game tech test  or Cave Game tech demo. It was made on May 13, 2009, at 16:55 UTC. This version was never released, but was recorded by Notch from around 17:00 UTC and uploaded at 17:36.IRC logs: "[19:00:52] <Notch_> hmm, I wonder if I could make a vid of this" [...] "[19:14:02] <Notch_> haha, the video ended up at 1.05 GB" [...] "[19:15:36] <Notch_> well, this is annoying. I guess I have to recapture. Google has a limit of 2 gb" [...] "[19:36:42] <Notch_> upload complete, processing video" [...] "[19:50:18] <Notch_> ok, the quality is still crap until the processing finishes, but: http://www.youtube.com/watch?v=F9t3FREAZ-k" It is the earliest known version of Minecraft, or what was then known as Cave Game, to have been recorded.
Development of this version started around May 12 at the latestLWJGL IRC Logs "[13:34:09] <Notch> i was trying to narrow down a performance issue last night." and continued up to May 13, 2009. Features were added that would be later seen in the Cave game tech test video released on May 13, 2009.
== Additions ==
=== Blocks ===
; Air
* Not listed as a block at this time.
; Grass block
* Made with the same graphics from RubyDung.
* Grass appears on fully lit tiles on the top 7 layers of the map. 
; Stone 
* Made with the same graphics from Notch's game RubyDung.
* Its texture at this time would later be repurposed for cobblestone.
=== World generation ===
; Chunks
* Take about of a second to generate each.LWJGL IRC Logs "[13:37:42] <Notch> rebuilding a chunk of these takes almost 100 ms, but that's everything, including tesselation, calculating lighting, and building the display list."
* The size of each chunk was 16×16 blocks.LWJGL IRC Logs "[13:37:08] <Notch> I've got chunks of blocks, 16x16x16 blocks. Each block can have a maximum of three quads, but that's worst case scenario"
** Chunks are 16×16 blocks instead of 8×8 because 8×8 chunks decreased performance.IRC logs: "[18:55:45] <Notch_> the chunk size is 16x16 now.." [...] "[18:56:47] <Notch_> 8x8 chunks are SLOWER"
* Chunks are loaded in order of their proximity to the player.IRC logs: "[19:51:48] <Notch_> i'll update tiles chunks the player first, and force a full update upon game start"
* Make a 256×64×256 tile map.
** The game takes 20 seconds to generate a 256×64×256 map.IRC logs: "[20:02:58] <Notch_> it takes like 20 seconds to grow a 256*256*64 map, though. :-\"
* It was possible to fall out of the world.
** Falling off the edge of the world will not kill the player.
; Caves
* Reached down until a few blocks before the last layer of cobblestone, making a ravine.
=== General ===
; Lighting
* The lighting engine in Classic and Pre-Classic was simple, with only 2 light levels, bright and dark. "Sunlight" is emitted by the top edge of the map and hits any block that is under it, regardless of distance. It passes through transparent blocks to light blocks underneath. Blocks that do not receive light are in a dim shadow that remains at the same level of brightness no matter how far they are from a light source. Blocks which are darkened also have a layer of thick, black fog applied to them, appearing darker when looked at from further distances. This caused weird visual glitches.
; Creative mode
* This was an extremely basic version of it. The player could not fly or place/remove blocks and there was no inventory or hotbar to get them from.
; Respawning
* The player can respawn by pressing R, teleporting them to the world they were in.
== Video ==
;Original
;Archive
== Gallery ==
A cave.png|A cave.
Cave Game chunk loading.png|Chunks are loaded very slowly in this version.
Cave Game falling.png
Cave Game R pressed.png
How it Started.jpg
== References ==
* 
* Rotab's IRC logs on Archive.org; #minecraft.20090525.log. May 25, 2009 (UTC+2)
Category:Unreleased builds
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