rlviser-py

Python implementation that manages a UDP connection to RLViser, it launches the RLViser binary from the current working directory upon first calling any render function.

The backbone of RLGym's env.render() functionality.

Example usage

import time

import rlviser_py as vis
import RocketSim as rs

game_mode = rs.GameMode.SOCCAR

# Create example arena
arena = rs.Arena(game_mode)

# Set boost pad locations
vis.set_boost_pad_locations([pad.get_pos().as_tuple() for pad in arena.get_boost_pads()])

# Setup example arena
car = arena.add_car(rs.Team.BLUE)
car.set_state(rs.CarState(pos=rs.Vec(z=17), vel=rs.Vec(x=50), boost=100))
arena.ball.set_state(rs.BallState(pos=rs.Vec(y=400, z=100), ang_vel=rs.Vec(x=5)))
car.set_controls(rs.CarControls(throttle=1, steer=1, boost=True))

# Run for 3 seconds
TIME = 3

steps = 0
start_time = time.time()
for i in range(round(TIME * arena.tick_rate)):
    arena.step(1)

    # Render the current game state
    pad_states = [pad.get_state().is_active for pad in arena.get_boost_pads()]
    ball = arena.ball.get_state()
    car_data = [
        (car.id, car.team, car.get_config(), car.get_state())
        for car in arena.get_cars()
    ]

    vis.render(steps, arena.tick_rate, game_mode, pad_states, ball, car_data)

    # sleep to simulate running real time (it will run a LOT after otherwise)
    time.sleep(max(0, start_time + steps / arena.tick_rate - time.time()))
    steps += 1

# Tell RLViser to exit
print("Exiting...")
vis.quit()