3D-Raycaster-Tech-Fair

3D Raycaster

A pseudo-3D engine built from scratch using raycasting techniques.

Project Overview

This project is a 3D rendering engine that simulates a three-dimensional environment using 2D raycasting. It was developed for the NMB Tech Fair to demonstrate how early 3D games created immersive worlds with limited hardware.

Key Features

• Real-time 3D Rendering: Converts a 2D grid map into a 3D perspective.
• 3D Model Integration: Includes a custom PC file (341KB) rendered within the environment.
• Dynamic Movement: Smooth keyboard/mouse controls to navigate the space.

Technical Implementation

The Raycasting Logic

The engine calculates “hits” by casting rays from the player’s position. For every vertical strip on the screen:

1. Cast a Ray: Calculate the angle based on the player’s Field of View (FOV).
2. Distance Calculation: Measure the distance to the nearest wall on the 2D grid.
3. Draw Walls: The height of the drawn wall is inversely proportional to its distance (closer = taller).

How to Use

1. Use W, A, S, D or Arrow Keys to move.
2. Observe how the PC interacts with the environment.

Created by Om Patel for the 2026 Tech Fair.