OnPlayerUseVending

#include <a_samp>

forward OnPlayerUseVending(playerid);
forward VendCheck(playerid);

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys){
    if(IsKeyJustDown(KEY_SECONDARY_ATTACK, newkeys, oldkeys)) {
        if(GetPlayerAnimationIndex(playerid)!=1660) SetTimerEx("VendCheck", 500, false, "d", playerid);
    }
    return 1;
}

#if defined _ALS_OnPlayerKeyStateChange
    #undef OnPlayerKeyStateChange
#else
    #define _ALS_OnPlayerKeyStateChange
#endif
#define OnPlayerKeyStateChange vend_OnPlayerKeyStateChange
forward vend_OnPlayerKeyStateChange(playerid, newkeys, oldkeys);

public VendCheck(playerid){
    if(GetPlayerAnimationIndex(playerid)==1660) CallLocalFunction("OnPlayerUseVending", "i", playerid);
}