Seika

A framework for windows, macOS, linux, web (emscripten), and android that can be used to make games.

Tech Stack

• C11
• OpenGL 3.3 (GLES3 on android/emscripten)
• miniaudio - Audio
• freetype - Font
• unity - Unit Tests
• zip - Reading archives
• stb image - Image loading

Windowing and input are implemented natively per platform (Win32/DirectInput, X11, Cocoa, Android, Emscripten) — there is no SDL dependency.

Current Features

• 2D Sprite Renderer
• Font Renderer
• 3D Renderer (with glTF model loading)
• Customizable shaders (with custom language)
• Audio (with spatial audio)
• Input (keyboard/mouse/gamepad, with a bindable input-action layer and a built-in gamepad database)
• Networking (UDP, plus a built-in static HTTP server)
• pthread wrapper and thread pool
• ECS
• SIMD helpers
• Math (vectors, matrices, quaternions, curves/easing)
• Screen capture (GIF)
• Multiple data structures such as hashmap and array list (vector)

How to include in a project

Seika uses cmake to build. To include in your project, add the following to your CMakeLists.txt:

add_subdirectory(seika)
target_link_libraries(${PROJECT_NAME} PRIVATE seika)

Example

A simple example of creating a window and querying for inputs.

#include <stdio.h>

#include <seika/seika_main.h>
#include <seika/window/window.h>
#include <seika/rendering/renderer.h>
#include <seika/input/input.h>

SKA_MAIN {
    SkaWindow* window = ska_win_create_window((SkaCreateWindowProps){
        .title = "Simple Window", .pos_x = 100, .pos_y = 100, .width = 800, .height = 600
    });
    ska_renderer_init((SkaRendererInitProps){
        .window_width = 800, .window_height = 600,
        .resolution_width = 800, .resolution_height = 600,
        .maintain_aspect_ratio = true, .init_2d = true,
    });
    ska_input_initialize();

    while (ska_win_is_active(window)) {
        ska_win_process_events(window);

        if (ska_input_is_key_just_pressed(SkaInputKey_KEYBOARD_ESCAPE, 0)) {
            break;
        }
        if (ska_input_is_key_just_pressed(SkaInputKey_KEYBOARD_SPACE, 0)) {
            printf("space just pressed\n");
        }
        if (ska_input_is_key_pressed(SkaInputKey_KEYBOARD_SPACE, 0)) {
            printf("space pressed\n");
        }
        if (ska_input_is_key_just_released(SkaInputKey_KEYBOARD_SPACE, 0)) {
            printf("space just released\n");
        }

        ska_renderer_process_and_flush_batches(&(SkaColor){ .r = 0.2f, .g = 0.2f, .b = 0.2f, .a = 1.0f });
        ska_win_swap_window(window);
        ska_input_new_frame();
    }

    ska_input_finalize();
    ska_renderer_deinit();
    ska_win_destroy_window(window);
    return 0;
}