Basic PySAMP+SQLAlchemy example

python.py

from samp import (
    MAX_PLAYERS,
    GetPlayerName,
    GetPlayerScore,
    IsPlayerConnected,
    KillTimer,
    SendClientMessage,
    SetPlayerScore,
    SetTimer,
)
from sqlalchemy import (
    Column,
    Date,
    Integer,
    String,
    create_engine,
    func,
)
from sqlalchemy.orm import sessionmaker, scoped_session
from sqlalchemy.ext.declarative import declarative_base


engine = create_engine('sqlite://')
sessionmaker = scoped_session(sessionmaker(bind=engine))
Base = declarative_base()


class User(Base):
    __tablename__ = 'users'

    id = Column(Integer, primary_key=True)
    name = Column(String, nullable=False)
    score = Column(Integer, nullable=False, server_default='0')
    registration_date = Column(Date, nullable=False, default=func.now())


score_timer = None


def give_score_to_all(score):
    for playerid in range(MAX_PLAYERS):
        if not IsPlayerConnected(playerid):
            continue
        SetPlayerScore(playerid, GetPlayerScore(playerid) + score)


def OnGameModeInit():
    global score_timer
    score_timer = SetTimer(give_score_to_all, 1000, True, 1)
    Base.metadata.create_all(engine)


def OnGameModeExit():
    KillTimer(score_timer)


def OnPlayerConnect(playerid):
    player_name = GetPlayerName(playerid)
    SendClientMessage(
        playerid,
        0xFF0000FF,
        f'Hello from Python, {player_name}!',
    )

    with sessionmaker() as session:
        user = session.query(User).filter_by(name=player_name).one_or_none()

        if not user:
            user = User(
                name=player_name,
                score=GetPlayerScore(playerid),
            )
            session.add(user)
            session.commit()
            SendClientMessage(
                playerid,
                0x80FF80,
                f"We don't know you, {player_name}. "
                f'We added you to our database.'
            )
            return

        SetPlayerScore(playerid, user.score)
        SendClientMessage(
            playerid,
            0x80FF80,
            f'We remember you, {player_name}: '
            f'You registered on {user.registration_date}.'
            f'Your score was set back to {user.score}.'
        )


def OnPlayerDisconnect(playerid, reason):
    with sessionmaker() as session:
        user = session.query(User).filter_by(
            name=GetPlayerName(playerid)
        ).one_or_none()

        if not user:
            return

        user.score = GetPlayerScore(playerid)
        session.commit()