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Making Minecraft Spherical

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Re: Making Minecraft Spherical

#101

Post by maxnoe »

reactordev wrote: post #11

You should definitely have a look at space engineers. They have a similar spherical problem with their voxels and I don’t think they went half as far as you did when implementing “orbital bodies”. As someone who is rather keen on space, gfx, and the algorithms that render them. Kudos. The problems were known to me, which is why I didn’t attempt it, however - the distortion correction, the chunking, I’m thinking if yo…

> WGS84 sucks for mapping a sphere.

WGS84 is not a map projection, it's a geodetic reference frame prescribing a reference ellipsoid and reference positions of ground stations.

https://en.m.wikipedia.org/wiki/World_Geodetic_System#WGS84

Re: Making Minecraft Spherical

#104

Post by b3lvedere »

reactordev wrote: post #13
lsaferite wrote: post #12

Earlier quoted context omitted.

Not allowing excavation to the core solves weird gravity issue as well. Astroneer had super weird gravity at their planet core. You can get stuck oscillating there.

If you really wanted to go for realism, there would be NO GRAVITY at the core. :P As you dig down you would get lighter and lighter on your feet. Any mass you are below (within the sphere of Earth) will exert a gravitational pull in one direction, while the mass above you (also within the Earth) will exert an equal and opposite pull.

Just a thought; I do wonder in reality if there is an actual single physical point that has any form of material but totally zero gravity. I think anything, as longs its size is above the planck length, has some gravity.

Re: Making Minecraft Spherical

#107

Post by harvie »

I was recently thinking about this... We've been building houses and other structures using plum lines and water levels all the time before afordable optics came in play. This kinda means most of our buildings are actualy polar rather than cartesian. Surely enough given the size of earth the error is quite tiny. But it's funny thinking about how the room i am sitting in right now is shaped like frustum with spherical floor and ceiling, rather than block. Despite what architecture drawing says...

Re: Making Minecraft Spherical

#108

Post by mister_mort »

skybrian wrote: post #29
vova_hn wrote: post #28

I wonder if it is possible to avoid "digging deep" problem by first building a cube out of voxels and then applying the type of distortion that turns the cube into quad sphere not just to the surface of the cube but also to the insides of the cube. I don't know how to explain it better, perhaps I should try to write some code, lol

It seems like the easiest way would be if you hit immutable lava at some point.

Minecraft solves the issue by making the bottom layer of its maps a special kind of block ('bedrock') that cannot be broken with any tool in the game without use of admin-level commands or the 'creative' mode.

Re: Making Minecraft Spherical

#109

Post by brokensegue »

harvie wrote: post #107

I was recently thinking about this... We've been building houses and other structures using plum lines and water levels all the time before afordable optics came in play. This kinda means most of our buildings are actualy polar rather than cartesian. Surely enough given the size of earth the error is quite tiny. But it's funny thinking about how the room i am sitting in right now is shaped like frustum with spherical…

i imagine imperfections in construction dominate this effect

Re: Making Minecraft Spherical

#110

Post by tomaskafka »

reactordev wrote: post #11

You should definitely have a look at space engineers. They have a similar spherical problem with their voxels and I don’t think they went half as far as you did when implementing “orbital bodies”. As someone who is rather keen on space, gfx, and the algorithms that render them. Kudos. The problems were known to me, which is why I didn’t attempt it, however - the distortion correction, the chunking, I’m thinking if yo…

Everyone wants to dig to the core (and build a cool zero g habitat there), at least that was the first thing I did :)
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