/*******************************************************************************************
*
*   raylib [text] example - raylib font loading and usage
*
*   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
*
*   This example has been created using raylib 1.7 (www.raylib.com)
*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
*   Copyright (c) 2017 Ramon Santamaria (@raysan5)
*
********************************************************************************************/

using System.Numerics;
using static Raylib_cs.Raylib;

namespace Examples.Text;

public class RaylibFonts
{
    public const int MaxFonts = 8;

    public static int Main()
    {
        // Initialization
        //--------------------------------------------------------------------------------------
        const int screenWidth = 800;
        const int screenHeight = 450;

        InitWindow(screenWidth, screenHeight, "raylib [text] example - raylib fonts");

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

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

        string[] 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)"
            };

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

        for (int i = 0; i < MaxFonts; i++)
        {
            float 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;

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

        // Main game loop
        while (!WindowShouldClose())
        {
            // Update
            //----------------------------------------------------------------------------------
            // TODO: Update your variables here
            //----------------------------------------------------------------------------------

            // Draw
            //----------------------------------------------------------------------------------
            BeginDrawing();
            ClearBackground(Color.RayWhite);

            DrawText("free fonts included with raylib", 250, 20, 20, Color.DarkGray);
            DrawLine(220, 50, 590, 50, Color.DarkGray);

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

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

        // De-Initialization
        //--------------------------------------------------------------------------------------
        for (int i = 0; i < MaxFonts; i++)
        {
            UnloadFont(fonts[i]);
        }

        CloseWindow();
        //--------------------------------------------------------------------------------------

        return 0;
    }
}