ascension: test/snake.c@e7ddb52facd3

add behavior nodes + restructure test program

Also, the test program will now officially be a game of snake.

     1 /*

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

     3  * Copyright 2023 Mike Becker. All rights reserved.

     4  *

     5  * Redistribution and use in source and binary forms, with or without

     6  * modification, are permitted provided that the following conditions are met:

     7  *

     8  *   1. Redistributions of source code must retain the above copyright

     9  *      notice, this list of conditions and the following disclaimer.

    10  *

    11  *   2. Redistributions in binary form must reproduce the above copyright

    12  *      notice, this list of conditions and the following disclaimer in the

    13  *      documentation and/or other materials provided with the distribution.

    14  *

    15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    16  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    18  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

    19  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    20  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    21  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    24  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    25  * POSSIBILITY OF SUCH DAMAGE.

    26  */

    28 #include <ascension/ascension.h>

    29 #include <cx/printf.h>

    31 static void update_fps_counter(AscSceneNode *node) {

    32     // addition and multiplication is more efficient testing for zero

    33     // at an unnoticible cost of imprecision

    34     static unsigned last_fps = 0u;

    35     static unsigned debounce = 999u;

    36     unsigned fps = 1000u;

    37     debounce += asc_context.elapsed_millis;

    38     if (debounce >= 1000u) {

    39         debounce = 0;

    40         fps /= asc_context.elapsed_millis;

    41         if (fps != last_fps) {

    42             last_fps = fps;

    43             snprintf(((AscText*)node)->text, 9, "%u FPS", fps);

    44             asc_node_update(node);

    45         }

    46     }

    47 }

    49 static void create_fps_counter(void) {

    50     asc_set_font(asc_font(ASC_FONT_REGULAR, 24));

    51     asc_ink_rgb(255, 0, 0);

    52     AscText* text = asc_text(10, 10, "XXXXX FPS");

    53     asc_scene_add_behavior(asc_node(text), update_fps_counter);

    54 }

    56 int main(int argc, char** argv) {

    57     asc_context_initialize();

    58     if (asc_has_error()) {

    59         SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,

    60                 "Fatal Error",asc_get_error(),NULL);

    61         return 1;

    62     }

    64     AscWindowSettings settings;

    65     asc_window_settings_init_defaults(&settings);

    66     settings.title = "Sandbox Application";

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

    69     asc_shader_initialize_predefined();

    71     // create fps counter

    72     create_fps_counter();

    74     // Main Loop

    75     do {

    76         // quit application on any error

    77         if (asc_has_error()) {

    78             SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,

    79                     "Fatal Error", asc_get_error(), window->window);

    80             asc_clear_error();

    81             break;

    82         }

    83     } while (asc_loop_next());

    85     asc_context_destroy();

    86     return 0;

    87 }

Mercurial > hg > ascension / file revision