Pit Maneuver ALPHA

// Copyright wups
#define FILTERSCRIPT

#include <a_samp>
#include <foreach>

new Float:PVAngle[MAX_PLAYERS],
    LastHandBreak[MAX_PLAYERS],
    bool:HandBreak[MAX_PLAYERS];
//Y_Less:
#if !defined abs
    #define abs(%1) \
        (((%1) < 0) ? (-(%1)) : ((%1)))
#endif

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


public OnPlayerConnect(playerid)
{
    HandBreak[playerid]=false;
    LastHandBreak[playerid]=0;
    return 1;
}


public OnPlayerUpdate(playerid)
{

    return 1;
}

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(IsPlayerInAnyVehicle(playerid))
    {
        if(PRESSED(KEY_HANDBRAKE))
        {
            HandBreak[playerid]=true;
        }
        else if(RELEASED(KEY_HANDBRAKE))
        {
            HandBreak[playerid]=false;
            LastHandBreak[playerid]=GetTickCount();
        }
    }
    return 1;
}

public OnPlayerStateChange(playerid, newstate, oldstate)
{
    if(newstate==PLAYER_STATE_DRIVER)
        GetVehicleZAngle(GetPlayerVehicleID(playerid),PVAngle[playerid]);
    return 1;
}

forward CheckForPIT();
public CheckForPIT()
{
    new vehicleid,
        victim=-1,
        Float:angle,
        Float:diff,
        CPlayer;

    foreach(Player, playerid)
    {
        vehicleid = GetPlayerVehicleID(playerid);
        if(vehicleid && GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
        {
            CPlayer = GetClosestPlayer(playerid,4.0);
            if(CPlayer == INVALID_PLAYER_ID) continue;

            GetVehicleZAngle(vehicleid,angle);
            if (angle > 360.0)
                angle -= 360.0;
            else if (angle < 0.0)
                angle += 360.0;
            diff = abs(angle-PVAngle[playerid]);
            if(diff > 45.0 && (HandBreak[playerid] || ((GetTickCount()-500) < LastHandBreak[playerid])))
            {
                victim=playerid;
                break;
            }
            PVAngle[playerid]=angle;
        }
    }
    if(victim != -1) OnPitManeuver(victim,CPlayer);
    return 1;
}
stock OnPitManeuver(victim,suspect)
{
    SendClientMessage(victim,0xFF0000FF," * You have been hit with a PIT Maneuver!");
    SendClientMessage(suspect,0xFF0000FF,", * You've done a PIT Maneuver!");
    return 1;
}
stock GetClosestPlayer(playerid,Float:radius = 999.999)
{
    new Float:dis[2];
    new returnid;
    returnid = INVALID_PLAYER_ID;
    dis[0] = radius;

    new Float:coo[6];
    GetPlayerPos(playerid,coo[0],coo[1],coo[2]);
    foreach(Player, i) if(i != playerid)
    {
        GetPlayerPos(i,coo[3],coo[4],coo[5]);
        dis[1] = floatround(floatsqroot((coo[0]-coo[3])*(coo[0]-coo[3])+(coo[1]-coo[4])*(coo[1]-coo[4])+(coo[2]-coo[5])*(coo[2]-coo[5])));
        if(dis[1]< dis[0])
        {
            dis[0] = dis[1];
            returnid = i;
        }
    }
    return returnid;
}