Nolo

#include <a_samp>

#define zlta    0xFFFF00AA  //yelloW

new str[256];
new Float:Pos[MAX_PLAYERS][4];
new PosSelected[MAX_PLAYERS];

public OnFilterScriptInit()
{
    print("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
    print("~                                    ~");
    print("~  InGame Coordinates saver by Nolo  ~");
    print("~                                    ~");
    print("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
    return 1;
}


public OnPlayerCommandText(playerid,cmdtext[])
{
    new cmd[256],idx;
    cmd = strtok(cmdtext,idx);
    if(!strcmp(cmdtext,"/savecoo",true,4))
    {
        GetPlayerPos(playerid,Pos[playerid][0],Pos[playerid][1],Pos[playerid][2]);
        GetPlayerFacingAngle(playerid,Pos[playerid][3]);
        PosSelected[playerid] = 1;
        format(str,256,"Coordinates succesfully defined: %.4f,%.4f,%.4f ",Pos[playerid][0],Pos[playerid][1],Pos[playerid][2],Pos[playerid][3]);
        SendClientMessage(playerid,zlta,str);
        new File:fhandle;
        fhandle = fopen("coordinates.txt",io_append);
        fwrite(fhandle,str);
        fclose(fhandle);
        SendClientMessage(playerid,zlta,"Your coordinates has been saved in the file 'coordinates.txt' in your scriptfiles");
        PosSelected[playerid] = 0;
        return 1;
    }
    return 0;
}

strtok(const string[], &index)
{
 new length = strlen(string);
 while ((index < length) && (string[index] <= ' ') && (string[index] > '\r'))
 {
  index++;
 }

 new offset = index;
 new result[30];
 while ((index < length) && (string[index] > ' ') && ((index - offset) < (sizeof(result) - 1)) && (string[index] > '\r'))
 {
  result[index - offset] = string[index];
  index++;
 }
 result[index - offset] = EOS;
 return result;
}