raylib-cs/Examples/Text/RaylibFonts.cs

/*******************************************************************************************
*
*   raylib [text] example - sprite fonts
*
*   Example complexity rating: [★☆☆☆] 1/4
*
*   NOTE: raylib is distributed with some free to use fonts (even for commercial pourposes!)
*         To view details and credits for those fonts, check raylib license file
*
*   Example originally created with raylib 1.7, last time updated with raylib 3.7
*
*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
*   BSD-like license that allows static linking with closed source software
*
*   Copyright (c) 2017-2025 Ramon Santamaria (@raysan5)
*
********************************************************************************************/

using System.Numerics;
using static Raylib_cs.Raylib;

namespace Examples.Text;

public partial class RaylibFonts : IExample
{
    public const int MaxFonts = 8;

    private const int screenWidth = 800;
    private const int screenHeight = 450;

    public string Name => "Text / Raylib Fonts";

    public string Title => "raylib [text] example - sprite fonts";

    private Font[] fonts;
    private string[] messages;
    private int[] spacings;
    private Vector2[] positions;
    private Color[] colors;

    public void Init()
    {
        // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
        fonts = new Font[MaxFonts];

        fonts[0] = LoadFont("resources/sprite_fonts/alagard.png");
        fonts[1] = LoadFont("resources/sprite_fonts/pixelplay.png");
        fonts[2] = LoadFont("resources/sprite_fonts/mecha.png");
        fonts[3] = LoadFont("resources/sprite_fonts/setback.png");
        fonts[4] = LoadFont("resources/sprite_fonts/romulus.png");
        fonts[5] = LoadFont("resources/sprite_fonts/pixantiqua.png");
        fonts[6] = LoadFont("resources/sprite_fonts/alpha_beta.png");
        fonts[7] = LoadFont("resources/sprite_fonts/jupiter_crash.png");

        messages = new string[MaxFonts] {
                "ALAGARD FONT designed by Hewett Tsoi",
                "PIXELPLAY FONT designed by Aleksander Shevchuk",
                "MECHA FONT designed by Captain Falcon",
                "SETBACK FONT designed by Brian Kent (AEnigma)",
                "ROMULUS FONT designed by Hewett Tsoi",
                "PIXANTIQUA FONT designed by Gerhard Grossmann",
                "ALPHA_BETA FONT designed by Brian Kent (AEnigma)",
                "JUPITER_CRASH FONT designed by Brian Kent (AEnigma)"
            };

        spacings = new int[MaxFonts] { 2, 4, 8, 4, 3, 4, 4, 1 };
        positions = new Vector2[MaxFonts];

        for (var i = 0; i < MaxFonts; i++)
        {
            var halfWidth = MeasureTextEx(fonts[i], messages[i], fonts[i].BaseSize * 2, spacings[i]).X / 2;
            positions[i].X = screenWidth / 2 - halfWidth;
            positions[i].Y = 60 + fonts[i].BaseSize + 45 * i;
        }

        // Small Y position corrections
        positions[3].Y += 8;
        positions[4].Y += 2;
        positions[7].Y -= 8;

        colors = new Color[MaxFonts] {
                Color.Maroon,
                Color.Orange,
                Color.DarkGreen,
                Color.DarkBlue,
                Color.DarkPurple,
                Color.Lime,
                Color.Gold,
                Color.Red
            };
    }

    public void Update()
    {
        // Draw
        //----------------------------------------------------------------------------------
        BeginDrawing();
        ClearBackground(Color.RayWhite);

        DrawText("free sprite fonts included with raylib", 220, 20, 20, Color.DarkGray);
        DrawLine(220, 50, 600, 50, Color.DarkGray);

        for (var i = 0; i < MaxFonts; i++)
        {
            DrawTextEx(fonts[i], messages[i], positions[i], fonts[i].BaseSize * 2, spacings[i], colors[i]);
        }

        EndDrawing();
        //----------------------------------------------------------------------------------
    }

    public void Unload()
    {
        // Fonts unloading
        for (var i = 0; i < MaxFonts; i++)
        {
            UnloadFont(fonts[i]);
        }
    }

    public static int Main()
    {
        // Initialization
        //--------------------------------------------------------------------------------------
        InitWindow(screenWidth, screenHeight, "raylib [text] example - sprite fonts");

        SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
        //--------------------------------------------------------------------------------------

        var game = new RaylibFonts();
        game.Init();

        // Main game loop
        while (!WindowShouldClose())    // Detect window close button or ESC key
        {
            game.Update();
        }

        game.Unload();

        // De-Initialization
        //--------------------------------------------------------------------------------------
        CloseWindow();                 // Close window and OpenGL context
        //--------------------------------------------------------------------------------------

        return 0;
    }
}