I issued an erroneous report on the version 1.4 bug tracking page on Minecraft Wiki. I generated New Players' Guide Tutorial World III (named after the Paul Soares Jr. series of Survive & Thrive worlds) in 12w27a, which was given random seed -2613378232004986922. In Minecraft 1.4 (the pre-release), I generated a new world with the same seed and did a standard SSP build, but put my mine in a different location, starting from what I call the "spawn dugout" at X+267 Z+242 just south of the spawn chunk. It is a small, naturally occurring shelter with visible coal, there is a jungle to the east, mountains to the west, a desert to the north, and taiga not too far south, making it a very interesting free build seed with a ravine even closer than the nearest mountain visible from spawn in the northwest, it is an ideal first-time player's seed.
When doing the 1.4 test SSP build, I started an angled mine shaft (100% grade) leading east from the spawn dugout, and hit a very interesting cave system. I had already explored around to verify that world generation had not changed (later analysis showed slight changes. As a result of finding this cave system, I built the same mine shaft (also 100% grade) from Tutorial World III and hit no caves all the way down to bedrock. I had assumed that cave generation had changed without any note on the change list and made a note to that effect on the Minecraft Wiki bug tracking page, which is now locked.
I had planned to do a comparison of both maps using the Unmined 0.3.165 Anvil map viewer and just did so. It turns out that I had missed the roof of the cave I entered in the 1.4 test by just one or two blocks in Tutorial World III, likely because I started the angled shaft a few blocks further east. In Unmined, the cave systems appear to be identical. It was a big groaner to find this, and I apologize for the erroneous report.
That said, I have since noticed that the 1.4 map is shot through with a lot more abandoned mine branches in very different configurations from Tutorial World III, indicating either that a major change was made to the abandoned mine generation code between 12w27a and 1.4 (no documentation found on Minecraft Wiki), or that abandoned mine generation is unaffected by the seed. I will generate at least two more worlds with the seed in 1.4.2 for comparison in Unmined. If the former bears fruit, I will update this issue. If it turns out to be seed-independent, I will add a note on the Minecraft Wiki page [[Abandoned Mine Shaft]]. See you in a bit.
Comments 5
So...what's the bug? Minecraft wiki is community maintained and thus can contain inaccurate info or be missing info. If you are merely testing to see if terrain gen has changed then this isn't really the place.
The Minecraft Wiki bug tracking pages included a category for "Annoyances" where behaviour appears to be intended, but is inappropriate, sometimes very much so. Mojang listens, otherwise you wouldn't see stuff like "Wooden half-blocks now act as wood" and "Changed method of placing sideways wood logs".
As for world generation: First, I've spotted "Minor additions to the world generator" in the blog, so it isn't totally undocumented by Mojang. Second, changing the world generator can and does piss off an awful lot of people:
http://www.minecraftforum.net/forum/50-seeds
http://www.youtube.com/watch?v=DDDnHVVV0kU
I had a similar problem. I once created a world in 1.2, and in a extreme hill biome there was a dungeon that overlooked a river (then I looted it and such). Then I wanted to recreate the world (now this was post 1.4ish) to screenshot/film the dungeon only to find it not there. I also had a desert dungeon in 1.2 that wasn't there post-1.4. As for mineshafts I had one over a ravine of lava in 1.2. In the 1.4 world it wasn't there, and instead a mineshaft was in a deep hole leading down to the ravine. Don't know why the world generator was changed but it did irritate me.
I generated two maps using 1.4.2, shutting down Minecraft completely and relaunching between the builds (I saw a bug report somewhere, can't remember whether it was here or Minecraft Wiki, where Superflat chunks loaded into a freshly generated Default world of the same name, and wanted to avoid all possibility of encountering that bug during this test.)
The cave structures have a few very minor differences with 1.4, and the abandoned mine configurations are identical between 1.4 and the two 1.4.2 worlds (while in-game, I also noted there was a pig in both of the 1.4.2 worlds on the floor of the ravine at x+182, z+228 approximate.) The cave configurations were identical between the 1.4.2 worlds. The surface configurations were identical between 1.4.2 (both worlds) and 1.4.
However, I noticed something very peculiar in both of the 1.4.2 worlds that did not exist in the 1.4 or 12w27a worlds: There is a Stronghold very close to spawn, End Portal located at x+100 z+89. Since I've heard some horror stories about pre-1.9Pre3 generated worlds resulting in Eyes of Ender leading to useless locations, I am concerned the same might happen to my New Players' Guide world when I get to my "The End" episodes.