Extended Partial Observability Challenge -- Enemy feat code

[LiZhYun]

Does this code mean that as long as the unit cannot see any enemy, it cannot see all enemies?

if self.obs_enemies[e_id, agent_id] == 0:
    enemy_feats = np.zeros(enemy_feats_dim, dtype=np.float32)

I guess the idea in the paper might be to just shade that enemy?

if self.obs_enemies[e_id, agent_id] == 0:
    enemy_feats[e_id] = np.zeros(enemy_feats_dim[1], dtype=np.float32)