[Mod] Experimental mapgen [mg]

[Nore]

D0431791: To disable villages, change the village_at_point function in villages.lua to:

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function village_at_point(minp, noise1)
    return 0,0,0,0
end

paramat: maybe we could work together on a new mapgen some day?

[paramat]

Yes of course 'new mapgen' is my thing :)

[jin_xi]

fuck yeah! nore and paramat mapgen!

[rubenwardy]

This is pretty awesome. I love map generation mods.

[freejack]

It keeps respawning a village it all ready created and I was over 500 blocks away.

A village spawned at: x=-324, z=269
A village spawned at: x=-324, z=269
A village spawned at: x=-324, z=269
12:14:21: ACTION[ServerThread]: Freejack places node default:torch at (-258,-153,215)
- default:torch 's place count is now 808
12:14:21: ACTION[ServerThread]: Freejack places node default:torch at (-260,-156,210)
- default:torch 's place count is now 809
12:14:21: ACTION[ServerThread]: Freejack places node default:torch at (-266,-159,208)
- default:torch 's place count is now 810
12:14:22: ACTION[ServerThread]: Freejack places node default:torch at (-268,-162,203)
- default:torch 's place count is now 811
12:14:22: ACTION[ServerThread]: Freejack places node default:torch at (-274,-164,201)
- default:torch 's place count is now 812
A village spawned at: x=-324, z=269
12:14:47: ACTION[ServerThread]: player Freejack crafts default:torch 4
12:14:47: ACTION[ServerThread]: player Freejack crafts default:torch 4
12:14:47: ACTION[ServerThread]: player Freejack crafts default:torch 4
A village spawned at: x=-324, z=269
A village spawned at: x=-324, z=269
12:15:11: ACTION[EmergeThread2]: Created mine at (-157,-177,367)
12:15:18: ACTION[ServerThread]: Freejack places node default:torch at (-276,-169,196)
- default:torch 's place count is now 813
12:15:29: ACTION[ServerThread]: Freejack places node default:torch at (-294,-149,260)

This is causing server issues.

[Nore]

freejack, no, the village is not recreated... I know the messages are a bit misleading, but what happens when the message appears is just that is asked if there was a village to spawn here to check if terrain should be flattened, so nothing to worry about...

[prestidigitator]

I spawned in earth again. Buried alive.

If I create a new world, I always spawn underground/at water level.

I suspect this might be because it is still trusting the C++ MapGen for "ground level". Somehow I doubt changing the heightmap array in "on generate" callbacks will be reflected in the actual ground level afterward, but I COULD be wrong.

[webdesigner97]

Very cool mapgen! I love it!

[meldrian]

sweet! A great a idea, brings more adventure into this open world building game.

[Novacain]

overpopulation? I think that there would only be a certain amount of NPC's with a limited lifetime... But I might be wrong...

A solution for over population could be that NPCs must be within X distance of spawner, and spawner can only generate Y NPCs.

As a seperate idea, the spawner could be designed to look like a bed, so they are more incognito.

[Sokomine]

A solution for over population could be that NPCs must be within X distance of spawner, and spawner can only generate Y NPCs.

I've been thinking of something similar for the peaceful_npc. They do not need to roam the entire map. If there's more of them in towns then that's fine. Unfortionately, peaceful_npc are not the most intelligent and drown often, so the loss rate is quite high.

As a seperate idea, the spawner could be designed to look like a bed, so they are more incognito.

I had planned something like that for my villages. Unfortionately it doesn't work - the space above the bed is too tight in my cottages for the mobs to stand on (their collusion box is always vertical even when the animation is diffrent).

[twoelk]

so always spawn besides the footend? or search for enough air nodes?

[prestidigitator]

So I've completed a simplex noise algorithm (basically Perlin Noise v3) in pure Lua. Running luajit from the command line, it can generate a single 2D chunk of 80x80 noise values in just over 1 millisecond, and a single 3D chunk of 80x80x80 noise values in approximately 0.25 seconds. For real mapgen this would probably have to be done a few times for multiple octaves and probably different ore types (caves, etc.) and such, but IMO it's getting competitive enough to be worth the flexibility of doing things purely from mod code, especially because it doesn't mean having to get C++ changes past the dev team....

[sfan5]

I generated an 1600x96x1600 map today and made an overview map:

Edit: This is not the full map, for the full map see https://forum.minetest.net/viewtopic.php?pid=134164#p134164

[Sokomine]

I generated an 1600x96x1600 map today and made an overview map:

Looks fine. It seems far more structured/less small-scale than the usual mapgen.

[paramat]

Beautiful map, i like the irregular polygon shape of the biomes.

[sfan5]

Seems like the mapper had a bug, here's the complete map:

[BrandonReese]

I'm loving this mapgen, especially the villages. I'm planning on adding some buildings are there any best practice recommendations for creating the .we files for the buildings?

I get this error when the server starts up

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13:30:30: ERROR[main]: set_mapgen_params(): flagmask field is deprecated, see lua_api.txt

It doesn't seem to affect anything but I thought I would report it.

There are also air pockets under water, they mostly seem to occur near caves and sometimes the natural breaks in the ice. Is there any way to fix these?

[paramat]

BrandonReese, see https://forum.minetest.net/viewtopic.php?pid=135299#p135299

[Inocudom]

I have come to the difficult conclusion that depth does not effect how common ores are and that mese and diamonds are almost impossible to find (they almost never appear in caves.)

[Nore]

They are (very) difficult to find, but once you've found one vein of it, you've got enough for a long time...
About the air pockets, it is in fact the cave generation that does that... it is those which do the breaks in the ice too.

[BrandonReese]

It looks like adding this at line 620 in init.lua (just after the calc_lighting() call) helps fix the bubbles.

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vm:update_liquids()


[Inocudom]

They are (very) difficult to find, but once you've found one vein of it, you've got enough for a long time...
About the air pockets, it is in fact the cave generation that does that... it is those which do the breaks in the ice too.

Does depth actually effect how often they appear? It seems like it doesn't.

[Nore]

You just need to go deep enough, but after that, it does not change.

[Inocudom]

I did find mese eventually, but diamonds, mithril, and gold do not seem to appear at all. Even magma shafts don't have any of those in them. You may want to re-examine the code for those three ores. You could have them generate like the mese blocks do.

[Nore]

I told you, those are very hard to find. However, when I played on VanessaE's mg test server, I found a vein in which I got almost 500 diamonds...

[Inocudom]

Please, forgive me for my previous displays of ignorance. After doing some tests, I did indeed find veins of gold and diamonds. However, my observations lead me to the conclusion that, for the average player, finding them is a matter of luck. If only some mod (like technic) had a device that could detect the presence of ores.

[Sokomine]

However, my observations lead me to the conclusion that, for the average player, finding them is a matter of luck.

That's right. This mapgen boils down to walking through the cave systems, placing a torch here and there, and looking for veins. For singleplayer, that's far too frustrating. The normal ore generation works far better there. The only situation where I think that this form of ore generation/frequency could be beneficial is a heavily populated multiplayer server with a lot of trade going on. It ought to be changed back to that normal ore generation.

If only some mod (like technic) had a device that could detect the presence of ores.

That would be of limited help only due to areas with the ore you seek for probably not existing yet.

The villages on this mapgen work very nicely, especially with the villages BrandonReese introduced. If thevillages start to learn to do more things, that might be an improvement to any mapgen. The individual houses in the villages are a bit primitive compared to the style I usually like, but then, my houses would be a pain for a mob to navigate in. The houses are still far better than what I saw in Minecraft. And - as that overview image here shows - village distribution works very nicely as well.

Other parts of the mapgen (the diffrent biomes) work out good as well. The only thing that ought to be changed is the ore distribution. Perhaps as an option.

[Inocudom]

Unless diamond shops are created on servers with this mapgen, there really is no sense in trying to get diamonds. The odds are vastly against the player.

[michaeltrio]

This experimental mapgen can serve for long time. We can find diamonds, mithril, and gold do not seem to appear at all.