batch-raycaster

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batch-raycaster

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A Wolfenstein3D-like raycaster made in Windows Batch.

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<a id="readme-top"></a>
<div align="center">
<h1 align="center">Batch Raycaster</h1>

<p align="center">
    A Wolfenstein3D-like raycaster made in Windows Batch.
  </p>

<p align="center">
<img src="https://nthorn.com/images/batch_raycaster/batch_raycaster_walking.gif" width="500">
<h6>*not real-time frame generation</h6>
</p>
</div>

<details>
  <summary>Table of Contents</summary>
  <ol>
    <li>
      <a href="#about">About</a>
    </li>
    <li>
      <a href="#getting-started">Getting started</a>
      <ul>
        <li><a href="#prerequisites">Prerequisites</a></li>
      </ul>
      <ul>
        <li><a href="#installation">Installation</a></li>
      </ul>
    </li>
    <li>
    <a href="#usage">Usage</a>
    <ul>
        <li><a href="#troubleshooting">Troubleshooting</a></li>
      </ul>
    </li>
    <li><a href="#license">License</a></li>
    <li><a href="#contact">Contact</a></li>
  </ol>
</details>

## About

This is an old-school DDA raycaster made in Windows Batch. This project is notable for its functionality despite Batch's lack of floating point arithmetic or built-in trigonometric functions.

Per Batch's limitations, frames take roughly 1.5 seconds to generate and movement is done via console-inputs (`set /p`).

[Read an in-depth analysis of this project here](https://nthorn.com/articles/batch_raycaster).

## Getting started

### Prerequisites

Designed for Windows 10 Command Prompt (conhost or Terminal), non-legacy mode, Consolas. Functionality within Linux/macOS virtual environments may vary (e.g. [wine](https://www.winehq.org/)). See [troubleshooting](#troubleshooting) if you experience any issues.

### Installation

1. Clone/download the repo
   ```sh
   git clone https://github.com/nTh0rn/batch-raycaster.git
   ```

## Usage
1. Modify [`map.txt`](map.txt) to contain the map of your choice. Use `.` to denote empty space, `@` to denote the player's position, and use any other character to denote walls _except for_ `'` or `#`, which are reserved for internal use.
2. Execute [`raycaster.bat`](raycaster.bat) (or [`raycaster-optimized.bat`](raycaster-optimized.bat) for better performance at the cost of unreadable code).
3. Movement/aiming commands are relative to the top-down map. See [CONTROLS.txt](CONTROLS.TXT).\
   3.1 `w`=north, `a`=west, `s`=south, `d`=east\
   3.2 `z #`=aim left, `x #`=aim right, where `#` is the number of degrees to turn.

### Troubleshooting

1. Some machines may encounter issues printing Unicode characters. If you're already using non-legacy Command Prompt (conhost or Terminal) with Consolas font and still experiencing issues, then try out the versions within [/no-unicode/](./no-unicode/).

2. Set `debug_show_wall_type=true` to show the walls' char from [map.txt](map.txt) both within the FOV and within the mini-map for debugging purposes.

## License

Distributed under the MIT License. See [LICENSE.txt](/LICENSE.txt) for more information.

## Contact

Nikolas Thornton - [nthorn.com](https://nthorn.com) - contact@nthorn.com

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