World Line Simulator

_Think about a world, in which entities keep moving (or any other action, eg. Human moving towards a location).

The idea is, that at any time* the universe has some state; You go back in time, change anything, this causes the current state to change, and hence the present and the future (as future depends on previous states)._

With such case, since there are two (or more) possible possibilities/events, the worldline/timeline diverges, and now there exists two (or more) worldlines/timelines, one in which the particular event happened, one where something else happened.

Anime: https://wikiless.tiekoetter.com/wiki/Steins;Gate_(TV_series)

• It has a 3D auto expanding space, like a simple form of our universe
• You can now have as many entities as memory allows, and can CREATE your own entities too.
• Generalises the idea to entities and actions, in different worlds and worldlines, all independently on different threads, as well theoretically different verses too
• Parts of this codebase became small libraries for specific tasks, such as matrices

It currently doesn't have 3D rendering, since that wasn't of importance earlier, the theoretical implementation was the goal, but it's interesting, think of the very basic idea as this ->

Building

First do a recursive clone, then

cd build   # if doesn't exist, then create
cmake ..
cmake --build .

Creating your own Custom ENTITIES (for example, horses)

• Inherit from the Entity class, override/implement the startSimulation and pauseSimulation virtual member functions, and others that are pure virtuals, and need to be overloaded in Entity class

• In World constructors, make sure your push your new entities to the entities vector with entities.push_back(new Horse(this));

Constructor - An entities constructor takes in the World*, so that it has access to the worldplot (consider it the space fabric here, just a matrix), for eg, calling world->getRandomCoord() to get a position in the world See the constructor of other entity, for eg. Human, Rock, Snake for reference

Class Diagram

Many entities have been added after this, leaving it so, as it clarifies the base things

Made with draw.io

Future Ideas

There have been lots of ideas, all just in code, from now on, adding here, what i think...

• 3D Rendering -> Currently, EVERYTHING happens, and is correctly simulating, devs working on this maybe satisfied, though actually being able see them moving will absolutely be a great thing

• Sparse Matrix for space -> Currently it uses the graphMat library for the 3D matrix, ie, the space here, in current scenario a sparse data structure will be more beneficial

3D Rendering wasn't the aim at beginning; Developed graphMat as dense matrix as per the eariler needs, they have slightly changed with the current ways entities exist

Source of Idea

Steins Gate (Anime)

and...

My Interest, and thinking 😎😎

©️ Aditya Gupta 2020