mirror of
https://github.com/thepigeongenerator/breakout_clone.git
synced 2025-12-16 22:05:45 +01:00
rebase project on SDL template, added audio and fixed some bugs
This commit is contained in:
Quinn
198
src/main.c
198
src/main.c
@@ -1,105 +1,93 @@
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#include <SDL2/SDL.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <time.h>
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#include "error_codes.h"
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#include "renderer.h"
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#include "level.h"
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#ifdef __EMSCRIPTEN__
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#include <emscripten/emscripten.h>
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#endif
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#define UPDATES_PER_SEC 50
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#define CLOCKS_PER_UPDATE (CLOCKS_PER_SEC / UPDATES_PER_SEC)
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#define CLOCKS_PER_UPDATE_F (((float)CLOCKS_PER_SEC) / UPDATES_PER_SEC)
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Level level = { 0 }; // stores the game's state
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SDL_Window* window = NULL; // the window that is given to the OS
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SDL_Renderer* renderer = NULL; // the renderer used to draw to the window
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// initializes the game
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static int init(void) {
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level_init(&level);
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return renderer_init(&window, &renderer);
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}
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// called on each game update
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static bool update(void) {
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const clock_t clock_start = clock();
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//update the event keys
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{
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SDL_Event e;
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while (SDL_PollEvent(&e)) {
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switch (e.type) {
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case SDL_QUIT:
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return false;
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break;
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}
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}
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}
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RenderData render_data = { window, renderer, &level }; //contains the data which is used to render the game
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const Uint8* keys = SDL_GetKeyboardState(NULL);
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// preform updates
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{
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level_update(&level, keys); //update the level
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renderer_update(&render_data); //update the render
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}
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const clock_t clock_end = clock();
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// provide a delay if needed, otherwise log a warning
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const clock_t clock_diff = clock_end - clock_start; // difference / how long the operations took
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const int remaining_ms = (int)((CLOCKS_PER_UPDATE_F - clock_diff) / CLOCKS_PER_SEC) * 1000;
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if (remaining_ms < 0) {
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(void)printf("delay between updates was %dms too long.", -remaining_ms);
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}
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else {
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SDL_Delay(remaining_ms); // wait the time in ms
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}
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return true;
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}
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#ifdef __EMSCRIPTEN__
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static void update_game(void) {
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// stop updating if update returns false
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if (update() == false) {
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emscripten_cancel_main_loop();
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}
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}
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#endif
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// cleans up resources
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static void close(SDL_Window* window, SDL_Renderer* renderer) {
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renderer_destroy(window, renderer);
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}
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// entry-point of the application
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int main(int argc, char *argv[]) {
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// initialize
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{
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const int code = init();
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if (code != SUCCESS)
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exit(code);
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}
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// TEMP: tell me that the program has been initialized
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(void)printf("initialized!\n");
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#ifdef __EMSCRIPTEN__
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emscripten_set_main_loop(update_game, 0, 1); // don't utilise setting the FPS, as we already do this
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#else
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while (update() && (level.stop == false));
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#endif
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// frees media and shuts down SDL
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close(window, renderer);
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(void)printf("finished!\n");
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return 0;
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}
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#include "main.h"
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#include <SDL2/SDL.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include "errors.h"
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#include "game/level.h"
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#include "window/audio.h"
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#include "window/renderer.h"
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#ifdef __EMSCRIPTEN__ // for web builds
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#include <emscripten.h>
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#endif
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bool playing = true;
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SDL_Window* window = NULL;
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SDL_Renderer* renderer = NULL;
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Level* level = NULL;
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// handles game application initialisation
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static void init(void) {
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// initialize SDL
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if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0) {
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error(FAILURE_SDL_INIT, "SDL could not initialize! SDL Error: %s", SDL_GetError());
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return;
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}
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// initialize the renderer
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if (renderer_init(&window, &renderer) < 0) {
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error(FAILURE_SDL_RENDERER, SDL_GetError());
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return;
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}
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// initialize level
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level = malloc(sizeof(Level));
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level_init(level);
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// initialize audio
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level->audio_device = audio_device_init(32000, AUDIO_S16, 1, 4096);
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level->bounce_sfx = audio_load_wav(level->audio_device, "./assets/bounce.wav");
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}
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// handles game application updating
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static void update(void) {
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// update the input
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{
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SDL_Event e;
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while (SDL_PollEvent(&e)) {
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switch (e.type) {
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case SDL_QUIT:
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exit(SUCCESS);
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break;
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}
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}
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}
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// preform updates
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level_update(level, SDL_GetKeyboardState(NULL));
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renderer_update(&(RenderData){window, renderer, level});
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}
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// handles game application quitting
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void stop(void) {
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playing = false;
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#if __EMSCRIPTEN__
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emscripten_cancel_main_loop();
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#endif
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}
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// entry point of the application
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int main(int argc, char** argv) {
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init();
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#if __EMSCRIPTEN__
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emscripten_set_main_loop(update, 0, 1);
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#else
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while (playing)
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update();
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#endif
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// cleanup of resources
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SDL_FreeWAV(level->bounce_sfx.buffer);
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SDL_CloseAudioDevice(level->audio_device->id);
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free(level);
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SDL_Quit();
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return 0;
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}
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