https://github.com/chizuru-nina-yamauchi/matrix_screen

That falling green characters with the black back ground.
https://github.com/chizuru-nina-yamauchi/matrix_screen

Last synced: 6 days ago
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That falling green characters with the black back ground.

• Host: GitHub
• URL: https://github.com/chizuru-nina-yamauchi/matrix_screen
• Owner: chizuru-nina-yamauchi
• Created: 2024-05-31T10:31:56.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2024-06-21T16:29:52.000Z (5 months ago)
• Last Synced: 2024-06-22T08:58:37.814Z (5 months ago)
• Language: CMake
• Homepage:
• Size: 6.84 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Matrix Screen Animation

This is a simple C++ program that creates a Matrix-style animation on the screen using SDL2 and SDL_ttf libraries.

## Setup Instructions

To run this application, you'll need:

1. C++ compiler(g++ or clang++)

2. SDL2 library

3. SDL_ttf library

### Installing SDL2 and SDL_ttf

If you haven't installed SDL2 and SDL_ttf libraries, you can install them using your package manager. For example, on Ubuntu:

```bash

sudo apt-get update

sudo apt-get install libsdl2-dev libsdl2-ttf-dev

```

### Downloading the font file

Choose a font file (e.g., `arial.ttf`) to use for rendering characters on https://fonts.google.com/?query=roboto+mono or other font websites. 

Download the font file and extract it in the project 'fonts' directory.

### How it Works

The program creates a Matrix-style animation on the screen, simulating falling characters. Here's how it works:

1.**Initialization:**

The program initializes SDL2 for graphics rendering and SDL_ttf for text rendering.

It creates a window and a renderer for rendering graphics.

It loads a font to render characters.

2.**Matrix Column Structure:**

The MatrixColumn struct represents a column in the matrix animation. It contains members for the column's position (x, y) and speed (speed).

3.**Initializing Matrix Columns:**

The initMatrixColumns function initializes the matrix columns by setting their initial positions and speeds.

4.**Rendering Matrix:**

The renderMatrix function renders the matrix animation on the screen.

It generates random characters and renders them at appropriate positions to simulate falling characters.

5.**Event Handling:**

The program continuously polls for SDL events.

If the user closes the window, the program exits.

6.**Main Loop:**

The main loop of the program clears the screen, renders the matrix animation, updates the display, and adds a delay to control the frame rate.

#### Running the Application

After installing the required libraries, navigate to the project directory and build the application using CMake:

```bash

cd Matrix_Screen

cmake -S . -B build

cmake --build build

./build/MatrixScreen

```

### How it looks (Example)

![pic1](./pics/pic1.png)

(With a different font file)

![pic2](./pics/pic2.png)

(We can change the screen size and how fast the characters fall by using different settings for height, width, and speed)

![pic3](./pics/pic3.png)

#### Environment I used

- IDE: CLion

- OS: Linux Ubuntu