wtf

#include <a_samp>

#define NULL 0
#define HOLDING(%0) ((newkeys & (%0)) == (%0))
#define PRESSED(%0) (((newkeys & (%0)) == (%0)) && ((oldkeys & (%0)) != (%0)))
#define RELEASED(%0) (((newkeys & (%0)) != (%0)) && ((oldkeys & (%0)) == (%0)))

public OnPlayerConnect(playerid) {
    SetPVarInt(playerid, "duration", NULL);
    SetPVarString(playerid, "url", "");
    SetPVarFloat(playerid, "posX", 0.0);
    SetPVarFloat(playerid, "posY", 0.0);
    SetPVarFloat(playerid, "posZ", 0.0);
    SetPVarFloat(playerid, "distance", 50.0);
    SetPVarInt(playerid, "usepos", NULL);
    return 1;
}

#if defined _ALS_OnPlayerConnect
    #undef OnPlayerConnect
#else
    #define _ALS_OnPlayerConnect
#endif

#define OnPlayerConnect AudioMS_OnPlayerConnect
forward AudioMS_OnPlayerConnect(playerid);

stock StopAudioStreamForPlayerEx(playerid) {
    SetPVarInt(playerid, "duration", NULL);
    SetPVarString(playerid, "url", "");
    SetPVarFloat(playerid, "posX", 0.0);
    SetPVarFloat(playerid, "posY", 0.0);
    SetPVarFloat(playerid, "posZ", 0.0);
    SetPVarFloat(playerid, "distance", 50.0);
    SetPVarInt(playerid, "usepos", NULL);
    StopAudioStreamForPlayer(playerid);
}

stock PlayAudioStreamForPlayerEx(playerid, url[], duration, Float:posX = 0.0, Float:posY = 0.0, Float:posZ = 0.0, Float:distance = 50.0, usepos = NULL) {
    if(GetPVarInt(playerid, "duration") == NULL) {
        PlayAudioStreamForPlayer(playerid, url, posX, posY, posZ, distance, usepos);
        SetPVarInt(playerid, "duration", duration);
        SetPVarString(playerid, "url", url);
        SetPVarFloat(playerid, "posX", posX);
        SetPVarFloat(playerid, "posY", posY);
        SetPVarFloat(playerid, "posZ", posZ);
        SetPVarFloat(playerid, "distance", distance);
        SetPVarInt(playerid, "usepos", usepos);
        if(duration != -1) {
            SetTimerEx("StopAudio", duration, NULL, "d", playerid);
        }
    } else if(GetPVarInt(playerid, "duration") == -1) {
        StopAudioStreamForPlayer(playerid);
        PlayAudioStreamForPlayer(playerid, url, posX, posY, posZ, distance, usepos);
        if(duration != -1) {
            new URL[128];
            GetPVarString(playerid, "url", URL, sizeof(URL));
            SetTimerEx("SetNextStream", duration, NULL, "dsdffffd", playerid, URL, GetPVarInt(playerid, "duration"), GetPVarFloat(playerid, "posX"), GetPVarFloat(playerid, "posY"), GetPVarFloat(playerid, "posZ"), GetPVarFloat(playerid, "distance"), GetPVarInt(playerid, "usepos"));
        }
    } else {
        StopAudioStreamForPlayer(playerid);
        PlayAudioStreamForPlayer(playerid, url, posX, posY, posZ, distance, usepos);

        if(duration != -1) {
            new URL[128];
            GetPVarString(playerid, "url", URL, sizeof(URL));
            SetTimerEx("SetNextStream", duration, NULL, "dsdffffd", playerid, URL, GetPVarInt(playerid, "duration"), GetPVarFloat(playerid, "posX"), GetPVarFloat(playerid, "posY"), GetPVarFloat(playerid, "posZ"), GetPVarFloat(playerid, "distance"), GetPVarInt(playerid, "usepos"));
        }
    }
}

forward StopAudio(playerid);
public StopAudio(playerid) {
    StopAudioStreamForPlayerEx(playerid);
}

forward SetNextStream(playerid, url[], duration, Float:posX, Float:posY, Float:posZ, Float:distance, usepos);
public SetNextStream(playerid, url[], duration, Float:posX, Float:posY, Float:posZ, Float:distance, usepos) {
    StopAudioStreamForPlayer(playerid);
    new URL[128];
    format(URL, sizeof(URL), url);
    PlayAudioStreamForPlayer(playerid, URL, Float:posX, Float:posY, Float:posZ, Float:distance, usepos);

    SetPVarInt(playerid, "duration", duration);
    SetPVarString(playerid, "url", URL);
    SetPVarFloat(playerid, "posX", posX);
    SetPVarFloat(playerid, "posY", posY);
    SetPVarFloat(playerid, "posZ", posZ);
    SetPVarFloat(playerid, "distance", distance);
    SetPVarInt(playerid, "usepos", usepos);
    if(duration != -1) {
       SetTimerEx("StopAudio", duration, 0, "d", playerid);
    }
    return true;
}

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys) {
    if(IsPlayerInAnyVehicle(playerid)) {
        if(PRESSED(KEY_CROUCH)) {
            PlayAudioStreamForPlayerEx(playerid, "http://alldev.eu/html/mp3/sound_011.wav", 3766);
            StopAudio(playerid);
        } else if(HOLDING(KEY_CROUCH)) {
            PlayAudioStreamForPlayerEx(playerid, "http://alldev.eu/html/mp3/sound_012.wav", 286);
        } else if(RELEASED(KEY_CROUCH)) {
            StopAudio(playerid);
        }
    } else StopAudio(playerid);
    return true;
}