Processor's def process_reward(self, reward), def process_step(self, observation, reward, done, info): wont return the value of reward for atari and retro.

[toksis]

Adding a print("Reward: ",reward) on this method process_reward(self, reward) or process_step(self, observation, reward, done, info): won't return a value. Always zero.

Error reproduction.

In the file dqn.atari.py in the example folder, paste this code. print("reward: ",reward).

Run the file.

Error: reward = 0.

This also happen in Retro.