Crafty

A multiplayer MineCraft clone coded from craft, fully in Rust (without any game engine or any multiplayer framework)

Current list of features

• Graphics rendering
  • We use bindings to OpenGL (glium.rs) to render all the cubes. We are able to render tens-of-thousands of cubes using much different optimization.
  • Easy way to import new textures into the game, allowing to easily reproduce minecraft-like landscape.
  • Easy way to presents Tiles on the screen (menus) and a custom way to render text. We have implemented debug menu (F3), a help menu (F12).
• A custom Game Engine, featuring
  • Detection of collision. This was not a piece of cake. We used AABB collision algorithm to solve this problem.
  • Gravity, Free-Fall, Jumping
  • Ray tracing to detect actions with the world and with other players.
• Minecraft Gameplay
  • Edition of the world like in minecraft: you can add cubes, collect cubes.
  • A crafting framework (press 'E' and you will see for yourself !). Craft a sword to attack your friends.
  • An attack system with lifes.
  • Items displayed on the screen, exactly like in Minecraft.
  • Automatic monsters which walk over the world and will try to kill you...
• A smart world creation system
  • Persistent world: loading and saving the world to the disk by pressing F10 (singleplayer)
  • Randomized map creation, using Perlin noise to have some randomness and with different biomes to look super beautiful !

And finally, probably the most advanced feature of this repo:

• A Multiplayer Game !
  • A multithreaded TCP server is in charge of (1) the game logic (map, monsters, etc...) (2) synchronizing all players by receiving MessageToServer and dispatching ServerUpdates
  • An reusable architecture using Trait that abstracts to the client (WorldRenderer) whether he is in single player or in multiplayer.

Getting started

This project surely still has some bugs and everything, we did mostly over 1 weekend.

But the main branch is supposed to run !

Single Player

To run in single player, use

cargo run --bin crafty -- INIT_MODE

For INIT_MODE, you can use

• --random: generates a random world using our world creation
• --flat : generates a flat world
• --disk : tries to load the map.json on the disk
• If put nothing, will use --random

Multi Player

To run in multiplayer, first launch a server like this:

cargo run --bin server -- --server "YOUR.IP" 

Then, every client can connect like this:

cargo run --bin client -- --server "YOUR.IP" -- name "UNIQUE_IDENTIFIER"

Crafting recipes (for now)

Stone word:

_c_
_c_
_o_

where c is a cobblestone block, and o is an oak log.

Missing features (short term milestones)

• Infinite map creation (almost there)
• Entities: finalize monsters logic

And of course ...

• Stabilization of all the bugs that we find...