Reinforcement Learning Algorithms with Python

How to use the environment

In the following steps, we will see how to use the environment.

1. In order to use Flappy Bird in our Python scripts, firstly, we need to import PLE and Flappy Bird:

from ple.games.flappybird import FlappyBirdfrom ple import PLE

2. Then, we instance a FlappyBird object and pass it to PLE with a few parameters:

game = FlappyBird()p = PLE(game, fps=30, display_screen=False)

Here, with display_screen, you can choose whether to display the screen.

3. The environment is initialized by calling the init() method:

p.init()

To interact and get the state of the environment, we primarily use four functions:

• • p.act(act), to execute the act action in the game. act(act) returns the reward obtained from the action performed.