class Goals:
def __init__(self, game_map):
# Keep a reference to the game_map object
self.game_map = game_map
# Keep a reference to the player object
self.player = game_map.player
# Create new path object and keep reference to it
self.path = Path(self.game_map)
# Winning path means can reach end goal by following the path
self.winning_path = False
'''
Find the highest priority goal that is currently possible
'''
def find_next_goal(self):
# If map updated then stop current path as it may be wrong
if self.game_map.map_updated and not self.winning_path:
self.path.clear_steps()
# If have an existing path then continue following it
if self.path.has_steps():
return self.path.next_step()
# If gold in sight then move towards it (unless already have)
gold_loc = self.game_map.gold_loc
if gold_loc and not self.player.have_treasure:
# Will try to find a route from current position to gold then back to start
goals = [gold_loc, self.player.get_start_position()]
if self.path.find_path_to_goal(goals):
self.winning_path = True
return self.path.next_step()
# If have gold then move towards start
if self.player.have_treasure:
if self.path.find_path_to_goal([self.player.get_start_position()]):
self.winning_path = True
return self.path.next_step()
# If there are POI's to go to that would be useful then find path to nearest
if self.path.find_path_to_poi():
return self.path.next_step()
# Else explore (move towards an unexplored region)
if self.path.find_path_to_explore():
return self.path.next_step()
def extended_searches(self):
# Allow backtracking when searching for path to gold
gold_loc = self.game_map.gold_loc
if gold_loc and not self.player.have_treasure:
# Will try to find a route from current position to gold then back to start
goals = [gold_loc, self.player.get_start_position()]
if self.path.find_path_to_goal(goals, backtrack=True):
self.winning_path = True
return self.path.next_step()
# Allow POI search to cross land -> water divide
if self.path.find_path_to_poi(cross_divide=True):
return self.path.next_step()
# See if using stones will lead to a useful exploration path
if self.player.num_stones_held and self.path.find_path_to_new_land():
return self.path.next_step()
# Allow crossing land -> water divide
if self.path.find_path_to_explore(cross_divide=True):
return self.path.next_step()
# Also allow wasting trees
if self.path.find_path_to_explore(cross_divide=True, waste_trees=True):
return self.path.next_step()
