Creada la classe Resource

Afegida la musica i els sons a Resource

source/jail_audio.cpp

@@ -223,7 +223,7 @@ JA_Sound_t *JA_LoadSound(const char* filename) {
 
 int JA_PlaySound(JA_Sound_t *sound, const int loop)
 {
-    if (!JA_soundEnabled) return 0;
+    if (!JA_soundEnabled || !sound) return 0;
 
     int channel = 0;
     while (channel < JA_MAX_SIMULTANEOUS_CHANNELS && channels[channel].state != JA_CHANNEL_FREE) { channel++; }