[Gappy]

Try this

pawn Code:

forward GetClosestPlayer(p1); //at the top of script
forward Float:GetDistanceBetweenPlayers(p1,p2);
forward ProxDetector(Float:radi, playerid, string[],col1,col2,col3,col4,col5);

pawn Code:

public ProxDetector(Float:radi, playerid, string[],col1,col2,col3,col4,col5) //pretty much anywhere aslong as it's outside other callbacks
{
    if(IsPlayerConnected(playerid))
    {
        new Float:posx, Float:posy, Float:posz;
        new Float:oldposx, Float:oldposy, Float:oldposz;
        new Float:tempposx, Float:tempposy, Float:tempposz;
        GetPlayerPos(playerid, oldposx, oldposy, oldposz);
        for(new i = 0; i < MAX_PLAYERS; i++)
        {
            if(IsPlayerConnected(i))
            {
                GetPlayerPos(i, posx, posy, posz);
                tempposx = (oldposx -posx);
                tempposy = (oldposy -posy);
                tempposz = (oldposz -posz);
                if (((tempposx < radi/16) && (tempposx > -radi/16)) && ((tempposy < radi/16) && (tempposy > -radi/16)) && ((tempposz < radi/16) && (tempposz > -radi/16)))
                {
                    SendClientMessage(i, col1, string);
                }
                else if (((tempposx < radi/8) && (tempposx > -radi/8)) && ((tempposy < radi/8) && (tempposy > -radi/8)) && ((tempposz < radi/8) && (tempposz > -radi/8)))
                {
                    SendClientMessage(i, col2, string);
                }
                else if (((tempposx < radi/4) && (tempposx > -radi/4)) && ((tempposy < radi/4) && (tempposy > -radi/4)) && ((tempposz < radi/4) && (tempposz > -radi/4)))
                {
                    SendClientMessage(i, col3, string);
                }
                else if (((tempposx < radi/2) && (tempposx > -radi/2)) && ((tempposy < radi/2) && (tempposy > -radi/2)) && ((tempposz < radi/2) && (tempposz > -radi/2)))
                {
                    SendClientMessage(i, col4, string);
                }
                else if (((tempposx < radi) && (tempposx > -radi)) && ((tempposy < radi) && (tempposy > -radi)) && ((tempposz < radi) && (tempposz > -radi)))
                {
                    SendClientMessage(i, col5, string);
                }
            }
            else
            {
                SendClientMessage(i, col1, string);
            }
        }
    }
    return 1;
}

pawn Code:

public GetClosestPlayer(p1)
{
    new x,Float:dis,Float:dis2,player;
    player = -1;
    dis = 99999.99;
    for (x=0;x<MAX_PLAYERS;x++)
    {
        if(IsPlayerConnected(x))
        {
            if(x != p1)
            {
                dis2 = GetDistanceBetweenPlayers(x,p1);
                if(dis2 < dis && dis2 != -1.00)
                {
                    dis = dis2;
                    player = x;
                }
            }
        }
    }
    return player;
}

pawn Code:

public Float:GetDistanceBetweenPlayers(p1,p2)
{
    new Float:x1,Float:y1,Float:z1,Float:x2,Float:y2,Float:z2;
    if(!IsPlayerConnected(p1) || !IsPlayerConnected(p2))
    {
        return -1.00;
    }
    GetPlayerPos(p1,x1,y1,z1);
    GetPlayerPos(p2,x2,y2,z2);
    return floatsqroot(floatpower(floatabs(floatsub(x2,x1)),2)+floatpower(floatabs(floatsub(y2,y1)),2)+floatpower(floatabs(floatsub(z2,z1)),2));
}

pawn Code:

public OnPlayerCommandText(playerid, cmdtext[])
{
    new giveplayername[MAX_PLAYER_NAME];
    new sendername[MAX_PLAYER_NAME];
    new string[128];

    if(strcmp("/rob", cmdtext, true, 10) == 0)
    {
      if(IsPlayerConnected(playerid))
      {
        if(IsPlayerInAnyVehicle(playerid))
            {
              SendClientMessage(playerid, COLOR_GREY, "You cannot rob someone while being in a Car!");
              return 1;
            }
            new victim = GetClosestPlayer(playerid);
            if(IsPlayerConnected(victim))
            {
                if(GetDistanceBetweenPlayers(playerid,victim) < 5)
                {
                  if(IsPlayerInAnyVehicle(victim))
                  {
                    SendClientMessage(playerid, COLOR_GREY, "You cannot rob someone who is in a car!");
                    return 1;
                  }
                  GetPlayerName(victim, giveplayername, sizeof(giveplayername));
                    GetPlayerName(playerid, sendername, sizeof(sendername));
                    new randt = random(4)+1;
                    if(randt == 1)
                    {
                      format(string, sizeof(string), "* %s shoots with his Tazer at %s, but missed.", sendername ,giveplayername);
                        ProxDetector(30.0, playerid, string, COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE);
                    }
                    else
                    {
                        format(string, sizeof(string), "* You were robbed by %s.", sendername);
                        SendClientMessage(victim, COLOR_WHITE, string);
                        format(string, sizeof(string), "* You robbed %s and stole $$s.", giveplayername, GetPlayerMoney(victim));
                        SendClientMessage(playerid, COLOR_WHITE, string);
                        format(string, sizeof(string), "* %s puts his hand into %s 's pocket and steals his money.", sendername ,giveplayername);
                        ProxDetector(30.0, playerid, string, COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE);
                        GameTextForPlayer(victim, "~r~Robbed", 2500, 3);
                        GivePlayerMoney(playerid, GetPlayerMoney(victim));
                        ResetPlayerMoney(victim, 0);
              }
                    else
                    {
                      SendClientMessage(playerid, COLOR_GREY, "  No-one near you!");
                      return 1;
                    }
                }
            }
        }
        return 1;
    }
    return 0;
}