My projects

Context

Appointments at the prefecture of Nanterre are very rare for foreigners. Even when visiting their website regularly, finding an open slot can take weeks, sometimes months! And yet, these appointment are very important for some: not being able to renew your resident permit could mean losing your job.

Objective

Automating the research of appointments. A script will visit the website continuously and publish a tweet whenever it detects a free slot for an appointment. All the followers will be receive a notification instantly. No need to visit their website every day anymore!

Details

The python script runs in a loop on a Raspberry Pi. It uses Selenium and Chromium to crawl the website. The Twython module is used to publish on Twitter.

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Objective

Creating a prototype of an online multiplayer game while learning how to use Unreal Engine 4.

Description

In this online multiplayer shooter, the players have to gather items that are hidden in the map. However, among them there are undercover traitors whose goal is to kill them before they can attain their objective.

Features

• Players animations
• Objects pickup
• Weapon with projectile
• HUD with health and ammo
• Host/Join game
• Level prototype

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This project helped me experiment with a technic to emulate how enemies are drawn in old shooters such as Wolfenstein and Doom. In these, enemies are represented by several sprites, one for each point of view. The engine decides which sprite to draw depending on the orientation of the enemy relative to the player camera. This give the illusion that the enemy is in 3D. The algorithm that I used is heavily inspired by an article by Ryan Brucks on UE4 impostors.

In Doom, enemies only have 8 possible view angles but I wanted to be able to observe an enemy from any angle, including from the top or the bottom and also I wanted to increase the number of view angles. This would considerably increase the number of sprites. So I needed to automate the process as much as possible.

To generate the sprites, I start from a 3D model in Blender. A create a Python script which builds a sphere around the model, and from each vertex, makes a render from the position of that vertex. This gives me a list of sprites. From that list I build a spritesheet using TexturePacker so I can use it in BabylonJS. I build a sphere ingame using a similar algorithm as the Python script (the order of the vertices is important). To determinate which sprite to draw, I cast a ray from the camera to the sphere. At the impact point, I look for the closest vertex. Its index matches the index of the sprite I need to display.

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Project done in a duo. I made the client side with ThreeJS and also did the 3D models, textures and animations for this management game in the paleolithic era.

Objective

Explore how a war simulator game (like Arma, Post Scriptum, Squad, etc.) could simulate the trajectory of bullets in a realistic way without using too much processing power.

Details

I choose to experiment in 2D to make the algorithm simpler but the code can easily be adapted to work for 3D.

In the screenshot above, we can see 3 coloured curves, each one correspond to a particular method of calcul: Euler in blue, Backward Euler in magenta, Heun in green. The straight white line represents the initial firing angle. And the red square is the projectile.

We can notice that with the distance, the trajectories diverge more and more. This imprecision is tied to the number of iterations done per second. At 200 iteration/s, we get a result very close to the reality, but this requires a lot of processing power. At 60 iterations/s and below, the Euler method tends to fall short, the Backward Euler method, on the opposite, tends to overshoot. The Heun method, which is a combination of the two others, gives use a result very close to reality, even with 30 iterations/s.

Resources

Euler method open_in_new Heun's method open_in_new

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Details

Isometric map editor inspired by management and strategy games from the early 2000's (Rollercoaster Tycoon, Red Alert 2).

Features

• Terrain deformation (hills and valleys).
• Cliffs
• Water
• Element placements (ex: trees).
• "Undo" button

Technical details

Terrain deformation

The points representing the height of each tile's corners are stored in a heightmap. When you click on a tile, the algorithm will increase the height of the tile's corners. Then, recursively, it will adjust, for each corner, the height of its neigbouring points to make sure the difference in height between them never exceed a predefined step. This results in a beautifully smooth hill.

Undo

I use the "Command" design pattern to store the actions that modify the terrain. This allows me to reverse them very easily.

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Details

Small project made for a Game Jam on Itch.io. Your goal is to build the tallest tower possible. A the beginning, you must place cinder blocks manually by clicking on the giant block on the left. When you accumulated a few of them, you can use them to buy improvements (yes, in this world people are paid in cinder blocks) that will place them automatically. Try to reach the milestones on the right to prove your greatness!

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Details

2D space exploration prototype. Made with LUA and Love2D.

Features

• Player travel on a circular planet.
• Simulation of gravity with and without atmosphere.
• Computation and drawing of the rocket trajectory.
• Online multiplayer.