new Float:distance[MAX_PLAYERS];
new m[MAX_PLAYERS];
new km[MAX_PLAYERS];
new Float:xx[MAX_PLAYERS],Float:yy[MAX_PLAYERS],Float:zz[MAX_PLAYERS];
new Text:tacho[MAX_PLAYERS];
new tachovar[MAX_PLAYERS];

public OnGameModeInit()
{
    for(new i=0;i<MAX_PLAYERS;i++)
    {
        tacho[i]= TextDrawCreate(508.000000, 383.000000, " ");
        TextDrawBackgroundColor(tacho[i],255);
        TextDrawFont(tacho[i],2);
        TextDrawLetterSize(tacho[i],0.639999,2.399999);
        TextDrawColor(tacho[i],16711935);
        TextDrawSetOutline(tacho[i],1);
        TextDrawSetProportional(tacho[i],1);
    }
}

public OnPlayerStateChange(playerid, newstate, oldstate)
{
    if(newstate==PLAYER_STATE_DRIVER)
    {
            tachovar[playerid]=SetTimerEx("tachotimer",200,true,"i",playerid);
        TextDrawShowForPlayer(playerid,tacho[playerid]);
        GetPlayerPos(playerid,xx[playerid],yy[playerid],zz[playerid]);
    }
    if(newstate==PLAYER_STATE_ONFOOT)
    {
        KillTimer(tachovar[playerid]);
        TextDrawHideForPlayer(playerid,tacho[playerid]);
    }
}

forward tachotimer(playerid);
public tachotimer(playerid)
{
    new string[50];
    new Float:distanz;
    new Float:x,Float:y,Float:z;
    GetPlayerPos(playerid,x,y,z);
    distanz=GetDistanceFromPointToPoint(xx[playerid],yy[playerid],zz[playerid],x,y,z);
    if(distanz>100) return 1;
    distance[playerid]=distance[playerid]+distanz;
    GetPlayerPos(playerid,xx[playerid],yy[playerid],zz[playerid]);
    if(distance[playerid]>100)
    {
        m[playerid]++;
        distance[playerid]=distance[playerid]-100;
        if(m[playerid]==10)
        {
            km[playerid]++;
            m[playerid]=0;
        }
    }
    format(string,sizeof(string),"%i,%i KM",km[playerid],m[playerid]);
    TextDrawSetString(tacho[playerid],string);
    return 1;
}

forward Float:GetDistanceFromPointToPoint(Float:X,Float:Y,Float:Z,Float:tX,Float:tY,Float:tZ);
public Float:GetDistanceFromPointToPoint(Float:X,Float:Y,Float:Z,Float:tX,Float:tY,Float:tZ)
{
    return Float:floatsqroot((tX-X)*(tX-X)+(tY-Y)*(tY-Y)+(tZ-Z)*(tZ-Z));
}