def update(self, champion_id, position):
"""
Attempt to update the current state of the draft and pick/ban lists with a given championId.
Returns: True is selection was successful, False otherwise
Args:
champion_id (int): Id of champion to add to pick list.
position (int): Position of champion to be selected. The value of position determines if championId is interpreted as a pick or ban:
position = -1 -> champion ban submitted.
position = 0 -> champion selection submitted by the opposing team.
0 < position <= num_positions -> champion selection submitted by our team for pos = position
"""
# Special case for NULL ban submitted.
if (champion_id is None and position == -1):
# Only append NULL bans to ban list (nothing done to state matrix)
self.bans.append(champion_id)
return True
# Submitted picks of the form (champ_id, pos) correspond with the selection champion = champion_id in position = pos.
# Bans are given pos = -1 and enemy picks pos = 0. However, this is not how they are stored in the state array.
# Finally this doesn't match indexing used for state array and action vector indexing (which follow state indexing).
if((position < -1) or (position > self.num_positions) or (not valid_champion_id(champion_id))):
return False
index = self.champ_id_to_state_index[champion_id]
pos_index = self.get_position_index(position)
if(position == -1):
self.bans.append(champion_id)
else:
self.picks.append(champion_id)
self.selected_pos.append(position)
self.state[index,pos_index] = True
return True
def can_ban(self, champion_id):
"""
Check to see if a champion is available to be banned.
Returns: True if champion is a valid ban, False otherwise.
Args:
champion_id (int): Id of champion to check for valid ban.
"""
return ((champion_id not in self.bans) and valid_champion_id(champion_id))
def can_pick(self, champion_id):
"""
Check to see if a champion is available to be selected.
Returns: True if champion is a valid selection, False otherwise.
Args:
champion_id (int): Id of champion to check for valid selection.
"""
return ((champion_id not in self.picks) and valid_champion_id(champion_id))
def add_ban(self, champion_id):
"""
Attempt to add a champion to the banned champion list and update the state.
Returns: True is ban was successful, False otherwise
Args:
champion_id (int): Id of champion to add to bans.
"""
if(not valid_champion_id(champion_id)):
return False
self.bans.append(champion_id)
index = self.get_state_index(champion_id)
self.state[index,self.get_position_index(-1)] = True
return True
def add_pick(self, champion_id, position):
"""
Attempt to add a champion to the selected champion list and update the state.
Returns: True is selection was successful, False otherwise
Args:
champion_id (int): Id of champion to add to pick list.
position (int): Position of champion to be selected. If position = 0 this is interpreted as a selection submitted by the opposing team.
"""
if((position < 0) or (position > self.num_positions) or (not valid_champion_id(champion_id))):
return False
self.picks.append(champion_id)
index = self.get_state_index(champion_id)
pos_index = self.get_position_index(position)
self.state[index,pos_index] = True
return True