A popular sandbox indie game made by Markus Persson, a.k.a. Notch. The gameplay revolves around collecting materials and building shelters in survival, or simply making intriguing structures in the creative mode of the game.

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46
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5answers
2k views

How could I implement something like Minecraft's crafting grid?

The crafting system in Minecraft uses a 2x2 or 3x3 grid. You place ingredients on the grid, and if you put the right ingredients in the right pattern, it will activate the recipe. Some interesting ...
24
votes
5answers
6k views

How to generate caves that resemble those of Minecraft?

I've been working on a 3D procedural world for a while now and am wanting to start adding cave systems. I'm currently using 2D/3D Perlin Noise for the terrain generation in combination with Marching ...
23
votes
3answers
2k views

Random seed function for map generation?

I am looking for a function to generate a random tile-based map as the visual boundaries of the map change (by going through the map). I want the map to be infinitely large, and have maze-like ...
21
votes
1answer
7k views

Is a voxel engine appropriate for a Minecraft-like game?

Why does Minecraft use polygons to draw the world terrain instead of voxels? Would a voxel based rendering engine be appropriate for a fully destructible game world built out of cubes like Minecraft? ...
21
votes
6answers
8k views

How can I improve rendering speeds of a Voxel/Minecraft type game?

I'm writing my own clone of Minecraft (also written in Java). It works great right now. With a viewing distance of 40 meters I can easily hit 60 FPS on my MacBook Pro 8,1. (Intel i5 + Intel HD ...
16
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3answers
2k views

How can I generate floating land masses for a Minecraft-like engine?

I am creating a Minecraft-like engine in XNA. What I want to do is create floating islands similar to the one shown in this video: http://www.youtube.com/watch?v=gqHVOEPQK5g&feature=related ...
15
votes
5answers
1k views

Why is chunk size often a power of two?

There are many Minecraft clones out there and I am working on my own implementation. A principle of terrain rendering is tiling the whole world in fixed size chunks to reduce the effort of localized ...
15
votes
1answer
14k views

How do I add a custom mob to Minecraft?

Basically decided to make my own mob, I have: Created my mob's entity class Created my mobs model class Drawn the model Added the function call for addMapping within the EntityList class I'm stuck ...
15
votes
1answer
17k views

How does Minecraft world generation happen?

How does Minecraft create completely unique worlds and biomes, from a seed?
13
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3answers
2k views

What is a good algorithm for fractal-based procedural city layout?

Background I run a minecraft server where I'm going to design a starter city of fairly large scale. I have a series of things, like rule signs and mob cages, I would like to put in buildings there. ...
12
votes
4answers
3k views

How can I implement voxel-based lighting with occlusion in a Minecraft-style game?

I am using C# and XNA. My current algorithm for lighting is a recursive method. However, it is expensive, to the point where one 8x128x8 chunk calculated every 5 seconds. Are there other lighting ...
11
votes
2answers
3k views

Am I allowed to make my Minecraft clone open source?

I'm developing in my spare time a game like Minecraft. In fact, it isn't "like Minecraft", because I'm trying to make it a close as possible copy of it (meant as exercise for myself at the age of 16 ...
11
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2answers
3k views

Are the Minecraft animations hardcoded into the game?

I would like to know how the animation system works in minecraft. I get a feeling that all the mobs are hardcoded into the game. Did notch really sit there and create the matrices for all the ...
11
votes
5answers
4k views

How is a 3d perlin noise function used to generate terrain?

I can wrap my head around using a 2d perlin noise function to generate the height value but I don't understand why a 3d perlin noise function would be used. In Notch's blog, ...
11
votes
2answers
4k views

What is Minecraft's database? [closed]

I was wondering, what kind of database does Minecraft use? Is it a relational database, maybe something common like MySQL? Do we even know what he's using? And maybe even a better question, SHOULD ...
10
votes
5answers
2k views

How to get the blocks seen by the player?

I'm writing a Minecraft-like game using Ogre engine and I have a problem. I must optimize my game, because when I try draw 10000 blocks, I have 2 FPS... So, I got the idea that blocks display of the ...
9
votes
4answers
5k views

How do you make Minecraft mods? [closed]

I'm new to making minecraft mods and I'm wondering what I need to do to get started.
9
votes
3answers
7k views

Mods for Minecraft Server - how does it work?

Minecraft server comes as a single jar. How are mods developed? How do they interact with the original jar? What is there under the hood? What technologies are involved there? I'm mostly a C++/Python ...
8
votes
2answers
601 views

Can someone explain radiosity lighting to me?

I already have the basics of ambient occlusion down. I have a raycaster and am capable of shooting rays about a hemisphere uniformly. It seems like those are the basics of what are needed for ...
8
votes
4answers
880 views

What kind of hardware would be required to render an Earth sized minecraft like map?

I have been thinking about this problem. Is it possible with current technology to create a 1:1 replica of the earth in voxel based game? What's the best data structure to store this giant map? Which ...
8
votes
2answers
2k views

Cave generation with Perlin worms

I'm currently trying to generate a Minecraft like voxel terrain with 3D Simplex Noise and also want to implement caves. I found the method of Perlin Worms in this thread, which generates really nice ...
7
votes
2answers
221 views

Determining if player-created structure matches a template in a 3D block-based game

Disclaimer: this is one of those dreaded Minecraft-style questions, but I feel it's more a data structures and algorithms question I'm really new to 3D data structures and am wondering what the best ...
7
votes
2answers
464 views

How to remove jitter from motion input?

I am writing a Minecraft mod that supports input from the Razer Hydra. It is a pair of motion controllers (one for each hand) that provide incredibly accurate position and rotation information. For ...
6
votes
1answer
5k views

Why is Minecraft's default resolution (seemingly) non-standard?

Background: I'm writing some articles on Minecraft in an attempt to introduce 10-year olds to development through modding. I know very little about the game itself, though :) I'm trying to understand ...
6
votes
2answers
5k views

How to handle a Block World like Minecraft

I want to write a simple game with a block world like in Minecraft. My theoretical question is what is the best way to handle this block informations during playing. My first Idea was a huge array but ...
6
votes
1answer
874 views

Minecraft Mod portable torch/lantern

I have just started making a mod for minecraft, I learned how to make items and import custom png's and have gotten all of that to work. I have been searching around the code trying to find a way to ...
5
votes
1answer
515 views

How to insert and remove blocks quickly in a Minecraftian world?

I currently have volume data for the world stored as an array of booleans. I then check each empty block and if it has non-empty neighbors the faces get drawn. This prevents me from sending a bunch ...
5
votes
2answers
1k views

Dealing with occlusion in an isometric sandbox game

Imagine a 3D sandbox game like Minecraft with third-person isometric graphics. If the camera only moves in two dimensions, and doesn't rotate, then a large portion of the world will always be occluded ...
5
votes
2answers
342 views

How does this snippet of code create a ray direction vector?

In the Minecraft source code, this code is used to create a direction vector for a ray from pitch and yaw:' float f1 = MathHelper.cos(-rotationYaw * 0.01745329F - 3.141593F); float f3 = ...
5
votes
1answer
1k views

Minecraft-style player-gound collision detection

The title pretty much says it all... (Minecraft is a game consisting of evenly-spaced cubes for terrain, like voxels) Note: I am using C# XNA. I am pretty sure AABB is the way to go, yet I don't know ...
5
votes
1answer
711 views

Merging adjacent cubes into large ones

I am currently working on a basic minecraft like game. I have a list of coordinates using which i render instances of a cube model. To optimize my rendering, i need to merge similar adjacent cubes ...
4
votes
2answers
328 views

How can I mod an item to take experience from a player in Minecraft?

I am creating a mod that has invincible tools which take experience from the player each time they are used. Can someone please tell me how to make the tools take away the experience when used?
4
votes
1answer
1k views

How does Minecraft render its sunset and sky?

In Minecraft, the sunset looks really beautiful and I've always wanted to know how they do it. Do they use several skyboxes rendered over eachother? That is, one for the sky (which can turn dark and ...
4
votes
2answers
4k views

Texture antialiasing?

In my Minecraft-clone style game, blocks are textured with a border that is lighter then the block color. See picture below: To achieve this effect without the textures being blurry I use this ...
4
votes
4answers
850 views

Drawing 2D Images “3D-Like”

So, I want to use textures for weapons in my FPS game instead of actual models. However, if I just draw the texture onto a square in the game, it has the rotation and stuff, but it looks "2D". How ...
4
votes
3answers
3k views

Voxel heightmap terrain editor

I've recently been experimenting with a simple Voxel-based 3d engine (think Minecraft) which uses heightmaps to define terrain in the following format: http://en.wikipedia.org/wiki/Heightmap Does ...
4
votes
4answers
682 views

Weird block selector selection (to floor or not to floor)?

Well, I am creating a Minecraft like engine in XNA, and since I first implemented the block selector (the cube that allows you to select blocks in 3D space) it has always been very inaccurate. Here is ...
4
votes
1answer
931 views

Minecraft style XNA game collision?

I've been trying to get this working for ages now, I can detect if there's a solid block at any place on the map and I can check how far something is inside of it, but I don't understand how to fix ...
4
votes
0answers
144 views

How do I add a method to a class without editing the source file?

I am trying to add a method to a Minecraft source file, but I have to figure out how to do it without actually editing the source files, as it would be illegal to redistribute Minecraft's source files ...
3
votes
3answers
858 views

I'm a single developer making a game made of blocks. Can I make 3d characters made of blocks without looking like Minecraft?

I would like to differentiate the look as much as I can but yet it has to be within the limits of what is reasonable for a single programmer can do. I have alot of ideas that would make the game ...
3
votes
3answers
1k views

Concerning The Minecraft Skybox

I was wondering how does the stars in night time in minecraft work, are they point sprites? And are they placed on a texture or just randomly placed on some far away location. EDIT 1: OK, well, with ...
3
votes
2answers
1k views

Why would someone chose midpoint displacement over perlin noise for 3D terrain generation?

I myself am creating a terrain generation algorithm and would be interested in knowing why others have chosen midpoint displacement over perlin noise. Minecraft is an example where midpoint ...
3
votes
2answers
272 views

Modify current mob health minecraft

Is there any way to add/remove health after an entity has been created? For example, I'd like to have a X mob regenerate Y "hearts" when Z happens. Thanks for any help in advance.
3
votes
1answer
399 views

Performace problems with Voxel Engine

well, I am creating a voxel engine in C# and XNA and many posts I have posted on this site have been due to performace issues, many people suggested using a profiler to help me out. I have, and ...
3
votes
1answer
1k views

Bukkit shoot tnt & help with vectors

I want to shoot a piece of tnt from the players face and then let it explode when it hits the target block. if (cmd.getName().equalsIgnoreCase("cannon")) { ...
3
votes
2answers
1k views

Collision Detection problems in Voxel Engine (XNA)

I am creating a minecraft like terrain engine in XNA and have had some collision problems for quite some time. I have checked and changed my code based on other peoples collision code and I still have ...
3
votes
2answers
716 views

AABB > AABB collision response?

I'm really confused about how to fix this in 3d? I want it so that I can slide along cubes but without getting caught if there's 2 adjacent cubes. I've gotten it so that I can do x collision, with ...
3
votes
0answers
32 views

Where to locate textures for custom blocks

I'm making my first foray into Minecraft modding on Ubuntu using Minecraft Forge. I'm finding it a little hard to get started as many of the tutorials seem to refer to older versions of Minecraft ...
3
votes
1answer
2k views

Stuck trying to decompress sections in Minecraft Anvil files (.mca)

I've been trying to write some Java code to read .mca files, based on the information at http://wiki.vg/Map_Format and http://wiki.vg/User:Sprenger120 . I am at the point where I can read in the ...
2
votes
1answer
413 views

How does Minecraft update process work?

When you initially launch Minecraft you open the "launcher", which will check if your client is up to date. If it's not it proceeds to download the latest files & then runs the game. How does ...