universe@0: /*
universe@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@0:  * Copyright 2023 Mike Becker. All rights reserved.
universe@0:  *
universe@0:  * Redistribution and use in source and binary forms, with or without
universe@0:  * modification, are permitted provided that the following conditions are met:
universe@0:  *
universe@0:  *   1. Redistributions of source code must retain the above copyright
universe@0:  *      notice, this list of conditions and the following disclaimer.
universe@0:  *
universe@0:  *   2. Redistributions in binary form must reproduce the above copyright
universe@0:  *      notice, this list of conditions and the following disclaimer in the
universe@0:  *      documentation and/or other materials provided with the distribution.
universe@0:  *
universe@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@0:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@0:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@0:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@0:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@0:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@0:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@0:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@0:  * POSSIBILITY OF SUCH DAMAGE.
universe@0:  */
universe@0: 
universe@7: #include <ascension/ascension.h>
universe@16: #include <cx/printf.h>
universe@0: 
universe@33: static void update_fps_counter(AscSceneNode *node) {
universe@33:     // addition and multiplication is more efficient testing for zero
universe@33:     // at an unnoticible cost of imprecision
universe@33:     static unsigned last_fps = 0u;
universe@33:     static unsigned debounce = 999u;
universe@33:     unsigned fps = 1000u;
universe@33:     debounce += asc_context.elapsed_millis;
universe@33:     if (debounce >= 1000u) {
universe@33:         debounce = 0;
universe@33:         fps /= asc_context.elapsed_millis;
universe@33:         if (fps != last_fps) {
universe@33:             last_fps = fps;
universe@36:             snprintf(asc_text_data(node)->text, 9, "%u FPS", fps);
universe@33:             asc_node_update(node);
universe@33:         }
universe@0:     }
universe@0: }
universe@0: 
universe@33: static void create_fps_counter(void) {
universe@33:     asc_set_font(asc_font(ASC_FONT_REGULAR, 24));
universe@33:     asc_ink_rgb(255, 0, 0);
universe@36:     AscSceneNode* node = asc_text(10, 10, "XXXXX FPS");
universe@36:     asc_scene_add_behavior(node, update_fps_counter);
universe@36:     asc_scene_add(asc_window_active_ui, node);
universe@33: }
universe@33: 
universe@0: int main(int argc, char** argv) {
universe@0:     asc_context_initialize();
universe@33:     if (asc_has_error()) {
universe@33:         SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
universe@33:                 "Fatal Error",asc_get_error(),NULL);
universe@33:         return 1;
universe@33:     }
universe@0: 
universe@0:     AscWindowSettings settings;
universe@0:     asc_window_settings_init_defaults(&settings);
universe@36:     settings.title = "Snake";
universe@0: 
universe@7:     AscWindow *window = asc_window_initialize(0, &settings);
universe@15:     asc_shader_initialize_predefined();
universe@16: 
universe@33:     // create fps counter
universe@33:     create_fps_counter();
universe@16: 
universe@33:     // Main Loop
universe@29:     do {
universe@0:         // quit application on any error
universe@33:         if (asc_has_error()) {
universe@33:             SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
universe@33:                     "Fatal Error", asc_get_error(), window->window);
universe@33:             asc_clear_error();
universe@33:             break;
universe@16:         }
universe@29:     } while (asc_loop_next());
universe@16: 
universe@0:     asc_context_destroy();
universe@0:     return 0;
universe@0: }
universe@0: