wAntiCheat v1.1

#define CHEAT_WEAPON_SPAWN  1
#define CHEAT_WEAPON_AMMO   2

#if !defined isnull
    #define PRESSED(%0) \
        (((newkeys & (%0)) == (%0)) && ((oldkeys & (%0)) != (%0)))
#endif

#if !defined isnull
    #define isnull(%1) \
        ((!(%1[0])) || (((%1[0]) == '\1') && (!(%1[1]))))
#endif

stock GivePlayerWeaponEx(playerid, weaponid, ammo) {
    new str[32];
    format(str,sizeof(str),"Weapon%d",weaponid);
    SetPVarInt(playerid,str,weaponid);
    format(str,sizeof(str),"Ammo%d",weaponid);
    SetPVarInt(playerid,str,GetPVarInt(playerid,str)+ammo);
    return GivePlayerWeapon(playerid, weaponid, ammo);
}

#if defined _ALS_GivePlayerWeapon
    #undef GivePlayerWeapon
#else
    #define _ALS_GivePlayerWeapon
#endif
#define GivePlayerWeapon GivePlayerWeaponEx

stock ResetPlayerWeaponsEx(playerid) {
    resetWeaponAntiCheat(playerid);
    return ResetPlayerWeapons(playerid);
}

#if defined _ALS_ResetPlayerWeapons
    #undef ResetPlayerWeapons
#else
    #define _ALS_ResetPlayerWeapons
#endif
#define ResetPlayerWeapons ResetPlayerWeaponsEx

forward OnWeaponAntiCheat(playerid, cheatid, reason[]);
public OnWeaponAntiCheat(playerid, cheatid, reason[]) {
    if(!isnull(reason)) return CallLocalFunction("WAC_OnWeaponAntiCheat","dds",playerid, cheatid, reason);
    else return 1;
}

#if defined _ALS_OnWeaponAntiCheat
    #undef OnWeaponAntiCheat
#else
    #define _ALS_OnWeaponAntiCheat
#endif
#define OnWeaponAntiCheat WAC_OnWeaponAntiCheat
forward WAC_OnWeaponAntiCheat(playerid, cheatid, reason[]);

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys) {
    new weaponname[32];
    if(PRESSED(KEY_FIRE)) {
        if(GetPlayerWeapon(playerid) != 0) {
            new strweapon[32],strammo[32];
            new weaponid = GetPlayerWeapon(playerid);
            new ammo = GetPlayerAmmo(playerid);
            format(strweapon,sizeof(strweapon),"Weapon%d",weaponid);
            format(strammo,sizeof(strammo),"Ammo%d",weaponid);
            if(GetPVarInt(playerid,strweapon) != weaponid) {
                GetWeaponName(weaponid,weaponname,sizeof(weaponname));
                removeWeaponAntiCheat(playerid, weaponid);
                CallRemoteFunction("OnWeaponAntiCheat","dds",playerid, 1, weaponname);
            }
            if(GetPVarInt(playerid,strweapon) == weaponid && GetPVarInt(playerid,strammo) < ammo) {
                GetWeaponName(weaponid,weaponname,sizeof(weaponname));
                removeWeaponAntiCheat(playerid, weaponid);
                CallRemoteFunction("OnWeaponAntiCheat","dds",playerid, 2, weaponname);
            }
        }
    }
    if(!isnull(weaponname)) return CallLocalFunction("WAC_OnPlayerKeyStateChange","ddd",playerid, newkeys, oldkeys);
    else return 1;
}

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

public OnPlayerDeath(playerid, killerid, reason) {
    ResetPlayerWeapons(playerid);
    return CallLocalFunction("WAC_OnPlayerDeath","ddd",playerid, killerid, reason);
}

#if defined _ALS_OnPlayerDeath
        #undef OnPlayerDeath
#else
        #define _ALS_OnPlayerDeath
#endif
#define OnPlayerDeath WAC_OnPlayerDeath
forward WAC_OnPlayerDeath(playerid, killerid, reason);

public OnPlayerExitVehicle(playerid, vehicleid) {
    if(isAirVehicle(vehicleid) && !GetPVarInt(playerid,"Weapon46")) {
        SetPVarInt(playerid,"Weapon46",46);
        SetPVarInt(playerid,"Ammo46",1);
    }
    return CallLocalFunction("WAC_OnPlayerExitVehicle","dd",playerid, vehicleid);
}

#if defined _ALS_OnPlayerExitVehicle
        #undef OnPlayerExitVehicle
#else
        #define _ALS_OnPlayerExitVehicle
#endif
#define OnPlayerExitVehicle WAC_OnPlayerExitVehicle
forward WAC_OnPlayerExitVehicle(playerid, vehicleid);

stock resetWeaponAntiCheat(playerid) {
    new strweapon[32],strammo[32];
    for(new i=1; i<=46; i++)  {
        format(strweapon,sizeof(strweapon),"Weapon%d",i);
        format(strammo,sizeof(strammo),"Ammo%d",i);
        if(!GetPVarInt(playerid,strweapon) || !GetPVarInt(playerid,strammo)) continue;
        DeletePVar(playerid,strweapon);
        DeletePVar(playerid,strammo);
    }
}

stock removeWeaponAntiCheat(playerid, weaponid) {
    new weapons[13][2];
    for(new i=0; i<=12; i++) GetPlayerWeaponData(playerid,i,weapons[i][0],weapons[i][1]);
    ResetPlayerWeapons(playerid);
    for(new i=0; i<=12; i++) {
        if(weapons[i][0] == weaponid) continue;
        GivePlayerWeapon(playerid,weapons[i][0],weapons[i][1]);
    }
}

stock isAirVehicle(vehicleid) {
    switch(GetVehicleModel(vehicleid)) {
        case 592, 577, 511, 512, 593, 520, 553, 476, 519, 460, 513, 548, 425, 417, 487, 488, 497, 563, 447, 469: return true;
        default: return false;
    }
    return false;
}