state_rewards.md

OpenSpiel state methods: rewards

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rewards()

Returns the list of intermediate rewards (rewards obtained since the last time the player acted): one value per player. Note that for many games in OpenSpiel, this function will return zeroes unless the state is terminal.

Examples:

import pyspiel

game = pyspiel.load_game("matrix_pd")
state = game.new_initial_state()

# Defect, Defect
state.apply_actions([1, 1])

# Rewards and returns equal in this case
print(state.rewards())
print(state.returns())

# Output:
# [1.0, 1.0]
# [1.0, 1.0]