//So let's start with defining our teams, so we can edit them soon easily !
   #define TEAM_RED  1
   #define TEAM_BLUE 2

//And let's continue with defining our teams' colors
  #define TEAM_REDCOLOR 0xFF0000AA // Defines Red Team's color
  #define TEAM_BLUECOLOR 0x0000FFAA // Defines Blue Team's color

  new gTeam[MAX_PLAYERS];//This is used for checking the player's team
  new redcar1; // We will use this soon to track if player's in red team's car or not
  new bluecar1; // We will use this soon to track if player's in blue team's car or not

// We will edit this soon aswell to track which team we will put our player at.
   AddPlayerClass(106,2522.7515,-1679.2373,15.4970,82.3750,0,0,0,0,0,0); // TEAM_RED's class,spawns at Grove St.
   AddPlayerClass(280,1547.0903,-1675.4006,13.9287,90.5706,0,0,0,0,0,0); // TEAM_BLUE's class,spawns at outside of PD.

public OnPlayerRequestClass(playerid, classid)

public OnPlayerRequestClass(playerid, classid)
{
    SetPlayerTeamFromClass(playerid, classid); // We will define this function soon for setting the teams for each class.
    return 1;
}

public OnPlayerSpawn(playerid)]

public OnPlayerSpawn(playerid)
{
    SetPlayerToTeamColour(playerid); // We will define this function soon too for setting the player's color to desired team's color.
    return 1;
}

SetPlayerTeamFromClass(playerid, classid)
{
    if(classid == 0) // if the desired class is first class. PAWN and most other programming languages count 0 as first.
    {
        gTeam[playerid] = TEAM_RED; // Remember, we putted grove street as first, so if the player selects grove street skin, he will spawn as red team member.
    }
    else if(classid == 1) // else if the desired class is second class. As PAWN counts 0 as first, so 1 is the second skin.
    {
        gTeam[playerid] = TEAM_BLUE; // Remember, we putted cops as second, so if the player selects the cop skin, he will spawn as blue team member.
    }

}

SetPlayerToTeamColour(playerid)
{
    if(gTeam[playerid] == TEAM_BLUE) // if the player is a member of blue team
    {
        SetPlayerColor(playerid,TEAM_BLUECOLOR); // sets the player's color to blue.
    }
    else if(gTeam[playerid] == TEAM_RED) // if the player is a member of red team
    {
        SetPlayerColor(playerid,TEAM_REDCOLOR); // sets the player's color to red. 
    }

}

&& means "and"
|| means "or"

SetPlayerTeamFromClass(playerid, classid)
{
    if(classid == 4 || classid == 5) // As PAWN starts counting from 0, 4 is the fifth classid and 5 is the sixth. This means if classid is fifth OR classid is sixth, put them in TEAM BLUE !
    {
        gTeam[playerid] = TEAM_BLUE;
    }
    else if(classid == 1)
    {
        gTeam[playerid] = TEAM_RED;
    }

}

new redcar1; // We will use this soon to track if player's in red team's car or not
new bluecar1; // We will use this soon to track if player's in blue team's car or not

public OnGameModeInit()

AddStaticVehicle(560,1534.8514,-1675.0812,13.0939,104.0228,95,83); // 
AddStaticVehicle(560,1535.0137,-1697.9331,13.1682,178.7065,95,83); //

redcar1 = AddStaticVehicle(560,1534.8514,-1675.0812,13.0939,104.0228,95,83); // Sets the redcar1 variable to be this vehicle
bluecar1 = AddStaticVehicle(560,1535.0137,-1697.9331,13.1682,178.7065,95,83); // Sets the bluecar1 variable to be this vehicle

public OnPlayerStateChange(playerid, newstate, oldstate)

if(newstate == PLAYER_STATE_DRIVER) // if the player's state is driver, which means if the player has turned his state into driving a car
{
   new carid = GetPlayerVehicleID(playerid); // Defines a new variable called "carid" and makes it get the player's vehicle ID.
   if(carid == bluecar1)// if the car's ID matches with bluecar1's.
   {
     if(gTeam[playerid] == TEAM_BLUE) // if player's team is blue.
     {
     // it won't do something as he matches the car's requirements.
     }
       else // if player's team is NOT blue
       {
         SendClientMessage(playerid,TEAM_REDCOLOR,"You must be in Blue Team to drive this car!"); // Sends a message to the player who tried driving the car with red color.
         RemovePlayerFromVehicle(playerid);//Removes the player from the vehicle. 
       }
   }
   if(carid == redcar1) // if the car's ID matches with redcar1's
   {
     if(gTeam[playerid] == TEAM_RED) // if player's team is red.
     {
     // it won't do something as he matches the car's requirements.
     }
       else // if player's team is NOT red
       {
          SendClientMessage(playerid,TEAM_REDCOLOR,"You must be in Red Team to drive this car!"); // Sends a message to the player who tried driving the car with red color.
          RemovePlayerFromVehicle(playerid);//Removes the player from the vehicle.
       }
   }
}