minecraft-pi-reborn/mods/src/sound/sound.cpp

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2021-09-12 03:18:12 +00:00
#include <string>
#include <libreborn/libreborn.h>
#include <symbols/minecraft.h>
#include <media-layer/audio.h>
#include "sound.h"
#include "../feature/feature.h"
#include "../override/override.h"
#include "../init/init.h"
// Resolve Source File Path
#define SOURCE_FILE_BASE "data/libminecraftpe.so"
static std::string get_source_file() {
static bool source_loaded = false;
static std::string source;
// Check
if (source_loaded) {
// Already Resolved
return source;
} else {
// Resolve
// Get Binary Directory
char *binary_directory = get_binary_directory();
// Get Full Path
char *full_path = NULL;
safe_asprintf(&full_path, "%s/" SOURCE_FILE_BASE, binary_directory);
// Free Binary Directory
free(binary_directory);
// Handle Overrides
char *overridden_full_path = override_get_path(full_path);
if (overridden_full_path != NULL) {
free(full_path);
full_path = overridden_full_path;
}
// Check If Sound Exists
if (access(full_path, F_OK) == -1) {
// Fail
WARN("%s", "Audio Source File Doesn't Exists: " SOURCE_FILE_BASE);
source.assign("");
} else {
// Set
source.assign(full_path);
}
// Free
free(full_path);
// Mark As Loaded
source_loaded = true;
// Return
return get_source_file();
}
}
// Resolve On Startup
__attribute__((constructor)) static void resolve_source_file() {
get_source_file();
}
// Play Sound
// The pitch value is unsued because it causes glitchy sounds, it is seemingly unused in MCPE as well.
static void SoundEngine_playUI_injection(__attribute__((unused)) unsigned char *sound_engine, std::string const& name, __attribute__((unused)) float pitch, float volume) {
std::string source = get_source_file();
if (source.size() > 0) {
media_audio_play(source.c_str(), _sound_pick(name).c_str(), 0.0f, 0.0f, 0.0f, 1.0f, volume, 1);
}
}
static void SoundEngine_play_injection(__attribute__((unused)) unsigned char *sound_engine, std::string const& name, float x, float y, float z, __attribute__((unused)) float pitch, float volume) {
std::string source = get_source_file();
if (source.size() > 0) {
media_audio_play(source.c_str(), _sound_pick(name).c_str(), x, y, z, 1.0f, volume, 0);
}
}
// Refresh Data
static void SoundEngine_update_injection(unsigned char *sound_engine, unsigned char *listener_mob, __attribute__((unused)) float listener_angle) {
// Variables
static float volume = 0;
static float x = 0;
static float y = 0;
static float z = 0;
static float yaw = 0;
// SoundEngine Properties
unsigned char *options = *(unsigned char **) (sound_engine + SoundEngine_options_property_offset);
// Volume
int32_t sound_enabled = *(int32_t *) (options + Options_sound_property_offset);
volume = sound_enabled ? 1 : 0;
// Position And Rotation
if (listener_mob != NULL) {
// Values
x = *(float *) (listener_mob + Entity_x_property_offset);
y = *(float *) (listener_mob + Entity_y_property_offset);
z = *(float *) (listener_mob + Entity_z_property_offset);
yaw = *(float *) (listener_mob + Entity_yaw_property_offset);
}
// Log
media_audio_update(volume, x, y, z, yaw);
}
// Init
void init_sound() {
// Implement Sound Engine
if (feature_has("Implement Sound Engine", 0)) {
overwrite_calls((void *) SoundEngine_playUI, (void *) SoundEngine_playUI_injection);
overwrite_calls((void *) SoundEngine_play, (void *) SoundEngine_play_injection);
overwrite_calls((void *) SoundEngine_update, (void *) SoundEngine_update_injection);
}
}