Mercurial > hg > ascension / file revision

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * Copyright 2023 Mike Becker. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <ascension/ascension.h>
#include <cx/printf.h>

static bool show_message_box_on_error(SDL_Window* window) {
    if (asc_has_error()) {
        SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
                "Fatal Error",
                asc_get_error(),
                window);
        asc_clear_error();
        return true;
    } else {
        return false;
    }
}

int main(int argc, char** argv) {
    asc_context_initialize();
    if (show_message_box_on_error(NULL)) return 1;

    AscWindowSettings settings;
    asc_window_settings_init_defaults(&settings);
    settings.title = "Sandbox Application";

    AscWindow *window = asc_window_initialize(0, &settings);
    asc_shader_initialize_predefined();

    asc_set_font(asc_font(ASC_FONT_REGULAR, 24));
    asc_ink_rgb(255, 0, 0);
    AscTextNode *fps_counter = asc_text(50, 50, "60 FPS");
    unsigned last_fps = 0;

    while (asc_loop_next()) {
        // quit application on any error
        if (show_message_box_on_error(window->window)) break;


        // fps counter
        if (asc_context.elapsed_millis > 0) {
            unsigned fps = 1000u / asc_context.elapsed_millis;
            if (fps != last_fps) {
                last_fps = fps;
                cxBufferClear(&fps_counter->text);
                cx_bprintf(&fps_counter->text, "%u FPS", fps);
                asc_text_update(fps_counter);
            }
        }
        asc_text_draw(fps_counter);
    }

    // TODO: maybe nodes should also be "garbage collected"
    asc_text_free(fps_counter);

    asc_context_destroy();
    return 0;
}