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Sound load crash.
Member #14,438
July 2012

So, my game keeps crashing when I attempt to load the sound file.
I've completely rewritten my game quite a few times, to try and solve it.

So far, all attempts have been unsuccessful, and it keeps crashing the moment I run the function al_load_sample().
I am exhausted trying to solve this, and it's far past midnight for me.
Here's my main function/file, main.cpp :

1#define ALLEGRO_STATICLINK 2#define bufferWidth 1920 3#define bufferHeight 1080 4#define FPS 45 5// ^ needed, below are includes 6#include <stdio.h> 7#include <stdlib.h> 8#include "allegro5/allegro.h" 9#include "allegro5/allegro_primitives.h" 10#include "allegro5/allegro_audio.h" 11#include "allegro5/allegro_acodec.h" 12#include "allegro5/allegro_image.h" 13#include "allegro5/allegro_native_dialog.h" 14#include "allegro5/allegro_font.h" 15#include "allegro5/allegro_ttf.h" 16#include "start.h" 17 18int main(int argc, char **argv) 19{ 20 ALLEGRO_SAMPLE *sample; 21 Message("Sample declared\n"); 22 AllegroSetUp(); 23 Message("Allegro set up right.\n"); 24 SetUpGame(); 25 Message("Game is ready to play.\n"); 26 al_reserve_samples(1); 27 Message("test sample reserved\n"); 28 sample = al_load_sample("music.ogg"); 29 Message("Sample loaded.\n"); 30 al_play_sample(sample, 1, 0, 1, ALLEGRO_PLAYMODE_LOOP, NULL); 31 Message("Sample is playing...\n"); 32 while(1) 33 { 34 35 } 36 ExitGame("End Of Game\n"); 37}

And here is "start.h" Not every function in "start.h" is called by my main.

1FILE *log; //log file. Write messages to this for debugging 2ALLEGRO_DISPLAY *display; //the main display. 3ALLEGRO_BITMAP *screenBuffer; //screen buffer 4ALLEGRO_TIMER *timer; //The time for game, operates at 45fps 5ALLEGRO_EVENT_QUEUE *eventQueue; //event queue, where events will be held. 6int screenWidth, screenHeight;//global scaling variables. 7////////////////////// now functions used to set up stuff. 8int AllegroSetUp(); 9//sets up ALL allegro needed functions. Should be first line of code... 10void SetUpGame(); 11//calls other set up functions to clean up code 12void AbortGame(const char* message); 13//avoids redundancy, abort game after message display 14ALLEGRO_DISPLAY* SetUpDisplay(); 15//set the display to fullscreen, no res change 16//returns the display 17ALLEGRO_TIMER* SetUpTimer(); 18//sets up the timer, ticks 45 times each second... 19FILE* SetUpLog(); 20//prepares the log file for logging... 21void Message(const char *input); 22//standard message, output to terminal, and out to the log file as well. Useful for debugging... 23ALLEGRO_BITMAP* SetUpScreenBuffer(); 24// Returns the screen buffer which will be used for resolution independace. Write to this, then write this 25// to the screen after finished drawing. Scale as needed. 26void ExitGame(const char *message); 27//Cleans up buffer, destroys display and writes logs. Use this to close. 28void DisplayBuffer(); 29//closes the log, destroys buffer and screen and exits. 30void SetUpEvents(); 31//sets up the event queue. Affects the global eventQueue variable. 32int AllegroSetUp() 33{ 34 if(!al_init()) { 35 AbortGame("Allegro Error, fatal.\n"); 36 } 37 Message("Allegro Initialized Successfully\n"); 38 if (!al_install_keyboard()) { 39 AbortGame("Failed to install keyboard\n"); 40 } 41 Message("Keyboard initialized successfully\n"); 42 if (!al_install_mouse()) { 43 AbortGame("Failure to install mouse\n"); 44 } 45 Message("Mouse installed successfully!\n"); 46 if (!al_init_primitives_addon()) { 47 AbortGame("Failure to load primitives!\n"); 48 } 49 Message("Primatives addon loaded successfully\n"); 50 if(!al_init_image_addon()) { 51 AbortGame("Failure to initialize image handler\n"); 52 } 53 Message("Image addon initialized successfully!\n"); 54 al_init_font_addon(); 55 Message("Font addon load completed. Hope it worked.\n"); 56 if (!al_init_ttf_addon()) { 57 AbortGame("Failure to load font reader!\n"); 58 } 59 Message("True Type Font addon initialized successfully\n"); 60 if(!al_install_audio()) { 61 AbortGame("Failure to load sound\n"); 62 } 63 Message("Audio installed successfully\n"); 64 if(!al_init_acodec_addon()) { 65 AbortGame("Audio Codec Failure!\n"); 66 } 67 Message("Audio Codec (LibVorbis) loaded successfully\n"); 68 return 0; 69} 70 71void SetUpGame() 72{ 73 log = SetUpLog(); 74 display = SetUpDisplay(); 75 timer = SetUpTimer(); 76 screenWidth = al_get_display_width(display); 77 screenHeight = al_get_display_height(display); 78 screenBuffer = SetUpScreenBuffer(); 79 al_flip_display(); 80 SetUpEvents(); 81 //al_hide_mouse_cursor(display); 82} 83 84ALLEGRO_TIMER* SetUpTimer() 85{ 86 ALLEGRO_TIMER* time = al_create_timer(1.0 / FPS); 87 if (!time) { 88 AbortGame("Failed to create timer\n"); 89 } 90 Message("Timer created successfully\n"); 91 return time; 92} 93 94ALLEGRO_DISPLAY* SetUpDisplay() 95{ 96 ALLEGRO_DISPLAY *disp = NULL; 97 ALLEGRO_DISPLAY_MODE disp_data; 98 al_get_display_mode(al_get_num_display_modes() - 1, &disp_data); 99 Message("Display resolution enunciated successfully: width:"); 100 char buffer[30]; 101 sprintf(buffer,"%d height: %d\n",disp_data.width,disp_data.height); 102 Message(buffer); 103 al_set_new_display_flags(ALLEGRO_FULLSCREEN_WINDOW); 104 disp = al_create_display(disp_data.width, disp_data.height); 105 if (!disp) { 106 AbortGame("Failed to create display"); 107 } 108 Message("Display created successfully, width:"); 109 sprintf(buffer,"%d height: %d\n",al_get_display_width(disp),al_get_display_height(disp)); 110 Message(buffer); 111 al_clear_to_color(al_map_rgb(0,0,0)); 112 return disp; 113} 114 115void AbortGame(const char* message) 116{ 117 printf("%s \n", message); 118 fprintf(log, "%s \n", message); 119 al_show_native_message_box(display, "Error!", "Error! :O ", message, NULL, ALLEGRO_MESSAGEBOX_ERROR); 120 fclose(log); 121 exit(1); 122} 123 124FILE* SetUpLog() 125{ 126 FILE *fp = NULL; 127 fp = fopen("log.log","w"); 128 fprintf(fp, "Game started\n"); 129 printf("Game started\n"); 130 return fp; 131} 132 133void Message(const char* message) 134{ 135 printf(message); 136 fprintf(log,message); 137 return; 138} 139 140ALLEGRO_BITMAP* SetUpScreenBuffer() 141{ 142 ALLEGRO_BITMAP *buffer = al_create_bitmap(bufferWidth,bufferHeight); 143 al_set_target_bitmap(buffer); 144 if(!buffer) { 145 AbortGame("Error setting up screen buffer\n"); 146 } 147 Message("Buffer created successfully, 1920x1080 used.\n"); 148 if((al_get_bitmap_flags(buffer))&(ALLEGRO_VIDEO_BITMAP)) { 149 Message("Buffer has video accelleration - Good.\n"); 150 } else { 151 Message("Buffer does NOT have video accelleration - BAD, but not fatal.\n"); 152 } 153 return buffer; 154} 155 156void ExitGame(const char *message) 157{ 158 char buffer[20]; 159 sprintf(buffer,"Game is closing...%s\n",message); 160 Message(buffer); 161 Message("Destroying buffer...\n"); 162 al_destroy_bitmap(screenBuffer); 163 Message("Buffer Destroyed\n"); 164 Message("Destroying display...\n"); 165 al_destroy_display(display); 166 Message("Display and buffer gone, exiting...\n"); 167 fclose(log); 168 exit(0); 169} 170 171void DisplayBuffer() 172{ 173 al_set_target_backbuffer(display); 174 //al_clear_to_color(al_map_rgb(0,0,0)); 175 //al_draw_scaled_bitmap(screenBuffer, 0, 0, bufferWidth, bufferHeight, scaleX, scaleY, scaleW, scaleH, 0); 176 al_draw_scaled_bitmap(screenBuffer,0,0,bufferWidth,bufferHeight,0,0,screenWidth,screenHeight,0); 177 al_flip_display(); 178 al_set_target_bitmap(screenBuffer); 179 al_clear_to_color(al_map_rgb(0,0,0)); 180} 181 182void SetUpEvents() 183{ 184 eventQueue = al_create_event_queue(); 185 al_register_event_source(eventQueue,al_get_keyboard_event_source()); 186 al_register_event_source(eventQueue,al_get_display_event_source(display)); 187 al_register_event_source(eventQueue,al_get_timer_event_source(timer)); 188 al_register_event_source(eventQueue,al_get_mouse_event_source()); 189 //This ^ line can be commented out to prevent INSANE lag 190}

I am seriously confused, ??? because I'm not lacking anything that the tutorial is doing, but mine doesn't work, and theirs does. I don't like copy-pasting, and would prefer to understand WHY this code is malfunctioning, so I can learn from it.
In need of help,

Cassio Renan
Member #14,189
April 2012

What's the output on allegro.log?
Also, does the message "Sample loaded" appears on your log? If it does, you might wanna check if the sample pointer is not NULL.

Member #14,438
July 2012

I do not get the Message "Sample loaded" in my log,
and I was not aware that allegro used a log...
Is that only in the debug version?
It wouldn't matter if I tested the sample to be null after I loaded the sample,
because it crashes before I can test.
I am confuzled.

Member #12,001
May 2010

Not really related to your problem, but is there some particular reason you keep the definitions of your functions in a header file (that doesn't have header guards either)?

Member #14,438
July 2012

Quite personally, I like my main function file, and main loop function files to be as clean as possible. My previous one was a disaster, totally uncluttered, and I couldn't debug my code when it came down to it.
It's a personal choice, and I am fond of it.
Organization, yay!
Also, what's a header guard?

Member #2,030
March 2002

Unfortunately, your personal choice is wrong.

Now, splitting up code into multiple files is a good thing - but doing it by putting your code in files that you #include is not. Use header files for declarations only, and keep your definitions in .c/.cpp files.

There are plenty of reasons for this, which someone with more time than I have right now can fill you in on, so I'll just give you the one you'll notice right away: you won't need to recompile everything whenever you change something. You just recompile the specific source file(s) you've edited.

Also, what's a header guard?

A header guard prevents a header from being included more than once. Typically, something like:

1#ifndef FOO_H 2#define FOO_H 3 4// Declarations here 5 6#endif

Move to the Democratic People's Republic of Vivendi Universal (formerly known as Sweden) - officially democracy- and privacy-free since 2008-06-18!

Member #14,438
July 2012

OH! Is that why we have header files?
This makes so much more sense now!
I totally thought that header files and C/Cpp files were equivalent!
smacks himself in stupidity
Perhaps some reorganization is in order.
Thanks for your advice, gnolam. Maybe now I can be less wrong.
Though, admittedly it would be nice to solve the problem I came here for...

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