raylib-cs/Examples/core/core_input_keys.cs

using Raylib;
using static Raylib.Raylib;

public partial class core_input_keys
{
    /*******************************************************************************************
    *
    *   raylib [core] example - Keyboard input
    *
    *   This example has been created using raylib 1.0 (www.raylib.com)
    *   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
    *
    *   Copyright (c) 2014 Ramon Santamaria (@raysan5)
    *
    ********************************************************************************************/


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

        InitWindow(screenWidth, screenHeight, "raylib [core] example - keyboard input");

        Vector2 ballPosition = new Vector2( (float)screenWidth/2, (float)screenHeight/2 );

        SetTargetFPS(60);       // Set target frames-per-second
        //--------------------------------------------------------------------------------------

        // Main game loop
        while (!WindowShouldClose())    // Detect window close button or ESC key
        {
            // Update
            //----------------------------------------------------------------------------------
            if (IsKeyDown(KeyboardKey.KEY_RIGHT)) ballPosition.x += 2.0f;
            if (IsKeyDown(KeyboardKey.KEY_LEFT)) ballPosition.x -= 2.0f;
            if (IsKeyDown(KeyboardKey.KEY_UP)) ballPosition.y -= 2.0f;
            if (IsKeyDown(KeyboardKey.KEY_DOWN)) ballPosition.y += 2.0f;
            //----------------------------------------------------------------------------------

            // Draw
            //----------------------------------------------------------------------------------
            BeginDrawing();

                ClearBackground(RAYWHITE);

                DrawText("move the ball with arrow keys", 10, 10, 20, DARKGRAY);

                DrawCircleV(ballPosition, 50, MAROON);

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

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

        return 0;
    }
}