added sound

.vscode/settings.json

@@ -22,6 +22,7 @@
         "stdlib.h": "c",
         "stb_image.h": "c",
         "string.h": "c",
-        "unistd.h": "c"
+        "unistd.h": "c",
+        "pthread.h": "c"
     }
 }

Makefile

@@ -1,6 +1,6 @@
 CC = gcc
 FLAGS = -Wall -Wextra -g
-LFLAGS = -lm src/glad.c -ldl -lglfw -lcglm -lpng -lSOIL
+LFLAGS = -lm src/glad.c -ldl -lglfw -lcglm -lpng -lSOIL -lpthread
 
 all: bin/back
 
@@ -10,7 +10,7 @@ test: bin/back
 mem: bin/back
 	valgrind --leak-check=full ./bin/back
 
-bin/back: obj/main.o obj/generation.o obj/display.o obj/proj.o obj/entities.o obj/bullets.o obj/menus.o obj/move.o obj/base.o obj/hash.o
+bin/back: obj/main.o obj/generation.o obj/display.o obj/proj.o obj/entities.o obj/bullets.o obj/menus.o obj/music.o obj/move.o obj/base.o obj/hash.o
 	mkdir -p bin
 	$(CC) $(FLAGS) $^ $(LFLAGS) -o $@
 
@@ -26,6 +26,7 @@ obj/bullets.o: src/bullets.c
 obj/move.o: src/move.c
 obj/base.o: src/base.c
 obj/proj.o: src/proj.c
+obj/music.o: src/music.c
 obj/menus.o: src/menus.c
 obj/hash.o: src/hash.c
 

sound/compilation.sh

@@ -0,0 +1 @@
+gcc sound/playsound.c -lSDL2 -o sound/music

sound/playsound.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <assert.h>
+#include <SDL2/SDL.h>
+
+int main(int argc, char** argv) {
+    assert(argc == 2);
+    if(SDL_Init(SDL_INIT_AUDIO)) {fprintf(stderr, "cannot initialize audio");exit(1);}
+    SDL_AudioSpec wavSpec;
+    Uint32 wavLength;
+    Uint8 *wavBuffer;
+    SDL_LoadWAV(argv[1], &wavSpec, &wavBuffer, &wavLength);
+    SDL_AudioDeviceID deviceId = SDL_OpenAudioDevice(NULL, 0, &wavSpec, NULL, 0);
+    int success = SDL_QueueAudio(deviceId, wavBuffer, wavLength);
+    SDL_PauseAudioDevice(deviceId, 0);
+    usleep((int)((wavLength)/44100.0*100000.0));
+    SDL_CloseAudioDevice(deviceId);
+    SDL_FreeWAV(wavBuffer);
+    SDL_Quit();
+    return 0;
+}
+// yummy

src/main.c

@@ -23,6 +23,7 @@
 #include "entities.h"
 #include "display.h"
 #include "generation.h"
+#include "music.h"
 
 double sim_time;
 int triCount;
@@ -699,17 +700,20 @@ int main_alt() {
     // glfw: terminate, clearing all previously allocated GLFW resources.
     // ------------------------------------------------------------------
     glfwTerminate();
+    printf("\n<0>\n\n");
+    end_music();
     return 0;
 }
 
 int main(int argc, char** argv) {
     srand(time(NULL));
+    init_music();
     triCount = 0;
     sim_time = 0.0;
     gamemode = 0;
     newRoomCount = 7;
     switchRoom = false;
     newRoomName = "templates/";
-    //read_png_file("res/question_block.png");
+    //play_sound("sound/audio/tetris_2.wav");
     return main_alt();
 }

src/move.c

@@ -13,6 +13,7 @@
 #include "entities.h"
 #include "proj.h"
 #include "move.h"
+#include "music.h"
 
 // ---------------------------------------------------------------------------------------------------- //
 double sensitivity = 0.06;
@@ -286,6 +287,9 @@ bool is_colliding(float dtime) {
                                     if(vstd->ents[k]->onDeath != NULL) {
                                         (*vstd->ents[k]->onDeath)(dtime);
                                     }
+                                    if(vstd->ents[k]->entity_type == 0) {
+                                        play_sound("sound/audio/smw_coin.wav");
+                                    }
                                     remove_entity(vstd->ents, &vstd->ent_memlen, &vstd->ent_len, k);
                                     is_clipping = false;
                                     exists = false;

src/music.c

@@ -0,0 +1,102 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <math.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <termios.h>
+#include <limits.h>
+#include <time.h>
+#include <pthread.h>
+#include <stdatomic.h>
+
+#include "hash.h"
+#include "base.h"
+#include "music.h"
+
+static pthread_t threads[32];
+static bool threadIsFree[32];
+static int threadID;
+
+static int thrID;
+
+pthread_mutex_t lock;
+
+void init_music() {
+    pthread_mutex_init(&lock, NULL);
+    threadID = 0;
+    for(int k = 0; k < 32; k++) {
+        threadIsFree[k] = true;
+    }
+}
+
+void end_music() {
+    pthread_mutex_destroy(&lock);
+    for(int k = 0; k < 32; k++) {
+        if(!threadIsFree[k]) {
+            printf("[pthread] killing %d\n", k);
+            pthread_cancel(threads[k]);
+        }
+    }
+}
+
+char* get_name(char* filename) {
+    char* res = malloc(sizeof(char)*100);
+    res[0] = '.';
+    res[1] = '/';
+    res[2] = 's';
+    res[3] = 'o';
+    res[4] = 'u';
+    res[5] = 'n';
+    res[6] = 'd';
+    res[7] = '/';
+    res[8] = 'm';
+    res[9] = 'u';
+    res[10] = 's';
+    res[11] = 'i';
+    res[12] = 'c';
+    res[13] = ' ';
+    int k = 14;
+    while(filename[k-14] != '\0' && k < 99) {
+        res[k] = filename[k-14];
+        k += 1;
+    }
+    res[k] = '\0';
+    return res;
+}
+
+void* mainMusic(void* arg) {
+    int localThreadID = thrID;
+    char* name = get_name((char*)arg);
+    system(name);
+    free(name);
+    threadIsFree[localThreadID] = true;
+    printf("thread %d is done\n", localThreadID);
+    return NULL;
+}
+
+bool get_id(int* res) {
+    int lp = 0;
+    while(lp < 32) {
+        if(threadIsFree[(lp+threadID)%32]) {
+            *res = (lp+threadID)%32;
+            return true;
+        }
+        lp += 1;
+    }
+    return false;
+}
+
+void play_sound(char* filename) {
+    pthread_mutex_lock(&lock);
+    int id;
+    if(get_id(&id)) {
+        threadIsFree[id] = false;
+        thrID = id;
+        threadID += 1;
+        pthread_create(&threads[id], NULL, mainMusic, filename);
+    } else {
+        fprintf(stderr, "WARNING : cannot play audio %s (out of space)\n", filename);
+    }
+    pthread_mutex_unlock(&lock);
+}

src/music.h

@@ -0,0 +1,9 @@
+#ifndef MUSIC_H
+#define MUSIC_H
+
+void init_music();
+void end_music();
+
+void play_sound(char* filename);
+
+#endif