ascension: test/snake.c@b3da4096c607 (annotated)

test/snake.c@b3da4096c607 (annotated)

test/snake.c

Tue, 26 Mar 2024 20:37:21 +0100

author: Mike Becker <universe@uap-core.de>
date: Tue, 26 Mar 2024 20:37:21 +0100
changeset 44: b3da4096c607
parent 37: 8a8cc6725b48
child 45: 18de2af03531
permissions: -rw-r--r--

create own compilation unit for GL context - fixes shader not being created per context

 /*
  * 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 void update_fps_counter(AscSceneNode *node) {
     // addition and multiplication is more efficient testing for zero
     // at an unnoticeable cost of imprecision
     static unsigned last_fps = 0u;
     static unsigned debounce = 999u;
     unsigned fps = 1000u;
     debounce += asc_context.elapsed_millis;
     if (debounce >= 1000u) {
         debounce = 0;
         fps /= asc_context.elapsed_millis;
         if (fps != last_fps) {
             last_fps = fps;
             snprintf(asc_text_data(node)->text, 9, "%u FPS", fps);
             asc_node_update(node);
         }
     }
 }
 static void create_fps_counter(void) {
     asc_set_font(asc_font(ASC_FONT_REGULAR, 24));
     asc_ink_rgb(255, 0, 0);
     AscSceneNode* node = asc_text(10, 10, "XXXXX FPS");
     asc_scene_add_behavior(node, update_fps_counter);
     asc_scene_add(&asc_window_active->ui, node);
 }
 static void update_score_counter(AscSceneNode *node) {
     AscText *text = asc_text_data(node);
     // tie to bottom left of the screen
     if (asc_window_active->resized) {
         asc_vec2i bottom_left = asc_window_active->dimensions;
         text->position.x = bottom_left.x - text->dimension.width - 10;
         text->position.y = bottom_left.y - text->dimension.height - 10;
         asc_node_update_transform(text);
     }
 }
 static void create_score_counter(void) {
     asc_set_font(asc_font(ASC_FONT_BOLD, 14));
     asc_ink_rgb(0, 255, 0);
     AscSceneNode* node = asc_text(0, 0, "Score: 0");
     asc_scene_add_behavior(node, update_score_counter);
     asc_scene_add(&asc_window_active->ui, node);
 }
 int main(int argc, char** argv) {
     asc_context_initialize();
     if (asc_has_error()) {
         SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
                 "Fatal Error",asc_get_error(),NULL);
         return 1;
     }
     // create window
     AscWindowSettings settings;
     asc_window_settings_init_defaults(&settings);
     settings.title = "Snake";
     AscWindow *window = asc_window_initialize(0, &settings);
     // create UI elements
     create_fps_counter();
     create_score_counter();
     // Main Loop
     do {
         // quit application on any error
         if (asc_has_error()) {
             SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
                     "Fatal Error", asc_get_error(), window->window);
             asc_clear_error();
             break;
         }
     } while (asc_loop_next());
     asc_context_destroy();
     return 0;
 }

Mercurial > hg > ascension / annotate

test/snake.c@b3da4096c607 (annotated)

test/snake.c