def find_adhesion_cone_circle_centered(b, r):
"""
Compute the coordinates of the intersection between the circle of center
b and radius r and its tangent passing by a. A is at the origin of the space
:param b: Position of point B
:type b: Position
:param r: Sum of the radius of A and B
:type r: float
:return: The coordinates of the intersections
:rtype: tuple(Position)
"""
d2 = b.x**2 + b.x**2
r2 = r**2
norm_c_2 = d2 - r2
norm_c = math.sqrt(norm_c_2)
# NB can be solved with determinant computation
# Solving using scalar product and vectorial product and using the
# the geometrical projection to have explicit expression of sin and cos
p1 = Position(*solve_x_y([b.x, -b.x], [b.x, b.x], [norm_c_2, norm_c * r]))
p2 = Position(*solve_x_y([b.x, b.x], [b.x, -b.x], [norm_c_2, norm_c * r]))
return (p1, p2)
def has_planet(self, x, y):
if x <= 0 or x >= self._game.map.width or y <= 0 or y >= self._game.map.height:
return True
pos = Position(x, y)
for planet in self._game.map.all_planets():
if pos.calculate_distance_between(
planet) <= planet.radius + .50001:
return True
return False
def ship_against_ship(ship, enemy_ship, game_map):
p = Position(enemy_ship.x, enemy_ship.y)
c = ship.navigate(p,
game_map,
speed=int(hlt.constants.MAX_SPEED),
ignore_ships=False,
ignore_planets=False)
if not c:
logging.warning("Couldn't attack enemy %s with ship %s" %
(enemy_ship.id, ship.id))
return c
def attack_planet(ship, planet, game_map):
p = Position(planet.x, planet.y)
c = ship.navigate(
p,
game_map,
speed=int(hlt.constants.MAX_SPEED),
ignore_ships=False,
ignore_planets=False)
if not c:
logging.warning("Couldn't attack planet %s with ship %s" % (planet.id, ship.id))
return c
def regroup(self):
"""
# Order all drone to move to center
:return:
"""
center = self.gravitational_center()
position = Position(center.x, center.y)
position.pos.radius = self.nb_members() * SQUAD_SCATTERED_THRESHOLD / 2.0
# Assign the position as target
self.assign_target(position, target_type=TargetType.POSITION)
def attack_planet(ship, planet, game_map):
p = Position(planet.x, planet.y)
c = None
speed = int(hlt.constants.MAX_SPEED)
while speed > 0:
c = ship.navigate(
p,
game_map,
speed=speed,
ignore_ships=True,
ignore_planets=True)
if c:
return c
speed -= 1
logging.warning("Couldn't attack planet %s with ship %s" % (planet.id, ship.id))
return c
def cornershipmove():
ship = cornershipfinder()
shippos = np.array([[ship.x, ship.y]])
corners = np.array([[0, 0], [game_map.width, game_map.height],
[0, game_map.height], [game_map.width, 0]])
distances = scipy.spatial.distance.cdist(shippos, corners)
index, distance = min(enumerate(distances[0]),
key=lambda distance: distance[1])
desiredcornerX, desiredcornerY = corners[index]
navigate_command = ship.navigate(ship.closest_point_to(
Position(desiredcornerX, desiredcornerY)),
game_map,
speed=int(hlt.constants.MAX_SPEED),
ignore_ships=False,
angular_step=8)
if navigate_command:
command_queue.append(navigate_command)
def test_compute_1RVOCone_constraint(self):
m = 4
n = 1
all_entities = self.entities[:m]
all_entities[1].vel = Position(0, -20)
preprocess = constraints_pre_cone(n, m, all_entities, self.max_speed)
all_pos, diff_pos, sum_rad, u1, u2, u3, d3, speed_sq, collision_idx, \
prev_vel = preprocess
cons = const_RVO_cone(diff_pos, sum_rad, u1, u2, u3, d3, speed_sq,
collision_idx, prev_vel)
x = self.entities[0].x
y = self.entities[0].y
cons((100 - x, 40 - y))
n_cons = len(cons([0, 0]))
# for k in range(n_cons):
# print("#"*10)
# for j in range(20):
# print(" ".join(["{:3}".format(cons([i * 10 - x, j * 10 -
# y])[k]<=0)
# for i in range(20)]))
# for k in range(n_cons):
# print("#"*10)
# img = [[cons([i - x, j - y])[k] < 0
# for i in range(200)]
# for j in range(200)]
# img = np.array(img, dtype=np.uint8)
# img = img * 255
# img = np.dstack((img, img, img))
# draw_entities(img, all_entities)
img = [[
all([cons([i - x, j - y])[k] < 0 for k in range(n_cons)])
for i in range(200)
] for j in range(200)]
img = np.array(img, dtype=np.uint8)
img = img * 255
img = np.dstack((img, img, img))
draw_entities(img, all_entities)
def __init__(self, load_from_disk=None, debug=False, args=None):
self._t0 = time.time()
self._game = pw.load('game_init.p') if load_from_disk else hlt.Game(
'DaanV123' + ('_debug' if debug else ''))
self._debug = debug
self._turn_idx = 0
if self._debug:
pw.dump(self._game, "game_init.p")
pw.dump(args, "args.p")
if load_from_disk:
args = pw.load("args.p")
print(args)
self._num_players = len(self._game.map.all_players())
heads_up = self._num_players == 2
self._r_attack_docked = args.r_attack_docked
self._r2_chase_enemy = args.r_chase_enemy**2
self._enemy_weight = args.enemy_weight_2p if heads_up else args.enemy_weight_4p
self._unowned_planet_weight = args.unowned_planet_weight
self._r_enemy_no_dock = args.r_enemy_no_dock
self._owned_planet_weight = args.owned_planet_weight
self._enemy_planet_weight = args.enemy_planet_weight
self._expected_enemy_theta = args.expected_enemy_theta
self._distances_to_planets = {
planet.id: compute_distances(self._game.map, planet.x, planet.y,
planet.radius + 3)
for planet in self._game.map.all_planets()
}
center = Position(self._game.map.width / 2, self._game.map.height / 2)
self._planet_distance_from_center = {
planet.id: planet.calculate_distance_sq_between(center)
for planet in self._game.map.all_planets()
}
self._should_i_dock = True
self._should_i_undock = False
self._hide = False
self.compute_stuff()
def intersect_segment_circle(start, end, circle, *, fudge=0.5):
"""
Test whether a line segment and circle intersect.
:param Entity start: The start of the line segment. (Needs x, y attributes)
:param Entity end: The end of the line segment. (Needs x, y attributes)
:param Entity circle: The circle to test against. (Needs x, y, r attributes)
:param float fudge: A fudge factor; additional distance to leave between the segment and circle. (Probably set this to the ship radius, 0.5.)
:return: True if intersects, False otherwise
:rtype: bool
"""
# Derived with SymPy
# Parameterize the segment as start + t * (end - start),
# and substitute into the equation of a circle
# Solve for t
dx = end.x - start.x
dy = end.y - start.y
a = dx**2 + dy**2
b = -2 * (start.x**2 - start.x * end.x - start.x * circle.x +
end.x * circle.x + start.y**2 - start.y * end.y -
start.y * circle.y + end.y * circle.y)
c = (start.x - circle.x)**2 + (start.y - circle.y)**2
if a == 0.0:
# Start and end are the same point
return start.calculate_distance_between(
circle) <= circle.radius + fudge
# Time along segment when closest to the circle (vertex of the quadratic)
t = min(-b / (2 * a), 1.0)
if t < 0:
return False
closest_x = start.x + dx * t
closest_y = start.y + dy * t
closest_distance = Position(
closest_x, closest_y).calculate_distance_between(circle)
return closest_distance <= circle.radius + fudge
def get_centroid(entities: List[Entity], width: float,
height: float) -> Position:
"""
Calculate centroid of entities.
:param entities:
:param width:
:param height:
:return: Position
"""
cx, cy = 0.0, 0.0
if entities:
for entity in entities:
cx += entity.x
cy += entity.y
cx /= len(entities)
cy /= len(entities)
if width:
cx /= width
if height:
cy /= height
return Position(cx, cy)
rem_dock[e] -= 1
cmds.append(nav_cmd)
if move:
move_table[s] = move
unassigned.discard(s)
elif type(e) == hlt.entity.Ship:
# WITHIN POTENTIAL ATTACK RANGE
if s.dist_to(e) <= WEAPON_RADIUS + 2*MAX_SPEED:
# ATTACK
if s in has_atked:
nav_cmd, move = helper.nav(s,s.closest_pt_to(e,6),gmap,None,move_table)
else:
nav_cmd, move = helper.nav(s,s.closest_pt_to(e),gmap,None,move_table)
if move:
atk_pos = Position(move.p2)
else:
atk_pos = Position(s.loc, s.loc + Point.polar(MAX_SPEED,s.angle_to(e)))
atk_ens = [t for t in gmap.en_uships() if t.dist_to(atk_pos) <= WEAPON_RADIUS + MAX_SPEED]
atk_frs = [t for t in gmap.my_uships() if t.dist_to(atk_pos) <= MAX_SPEED+2]
if len(atk_frs) > len(atk_ens):
if nav_cmd:
en_ship_assigned[e] -= 1
cmds.append(nav_cmd)
if move:
move_table[s] = move
unassigned.discard(s)
continue
# OTHER OPTIONS
en_dships = sorted(gmap.en_dships(),key=lambda t:s.dist_to(t))
def navigate(ship,
target,
game_map,
speed,
avoid_obstacles=True,
max_corrections=90,
angular_step=1,
ignore_ships=False,
ignore_planets=False,
clockwise=True,
iteration=0):
"""
Move a ship to a specific target position (Entity). It is recommended to place the position
itself here, else navigate will crash into the target. If avoid_obstacles is set to True (default)
will avoid obstacles on the way, with up to max_corrections corrections. Note that each correction accounts
for angular_step degrees difference, meaning that the algorithm will naively try max_correction degrees before giving
up (and returning None). The navigation will only consist of up to one command; call this method again
in the next turn to continue navigating to the position.
:param Entity target: The entity to which you will navigate
:param game_map.Map game_map: The map of the game, from which obstacles will be extracted
:param int speed: The (max) speed to navigate. If the obstacle is nearer, will adjust accordingly.
:param bool avoid_obstacles: Whether to avoid the obstacles in the way (simple pathfinding).
:param int max_corrections: The maximum number of degrees to deviate per turn while trying to pathfind. If exceeded returns None.
:param int angular_step: The degree difference to deviate if the original destination has obstacles
:param bool ignore_ships: Whether to ignore ships in calkculations (this will make your movement faster, but more precarious)
:param bool ignore_planets: Whether to ignore planets in calculations (useful if you want to crash onto planets)
:return string: The command trying to be passed to the Halite engine or None if movement is not possible within max_corrections degrees.
:rtype: str
"""
# Assumes a position, not planet (as it would go to the center of the planet otherwise)
if max_corrections <= 0:
return 0, 0
distance = ship.calculate_distance_between(target)
angle = ship.calculate_angle_between(target)
ignore = () if not (ignore_ships or ignore_planets) \
else Ship if (ignore_ships and not ignore_planets) \
else Planet if (ignore_planets and not ignore_ships) \
else Entity
if avoid_obstacles and game_map.obstacles_between(ship, target, ignore):
iteration += 1
if clockwise:
new_angle = angle - iteration * angular_step
clockwise = False
else:
new_angle = angle + iteration * angular_step
clockwise = True
new_target_dx = math.cos(math.radians(new_angle)) * distance
new_target_dy = math.sin(math.radians(new_angle)) * distance
new_target = Position(ship.x + new_target_dx, ship.y + new_target_dy)
return navigate(ship,
new_target,
game_map,
speed,
True,
max_corrections - 1,
angular_step,
clockwise=clockwise,
iteration=iteration)
speed = speed if (distance >= speed) else distance
return speed, angle
def _get_commands(self, action, world_map: hlt.game_map.Map):
commands = []
player_id = world_map.get_me().id
planets = world_map.all_planets()
all_ships = world_map._all_ships()
ships = [ship for ship in all_ships if ship.owner.id == player_id]
enemy_ships = [
ship for ship in world_map._all_ships()
if ship.owner.id != player_id
]
free_planets = []
enemy_planets = []
enemy_ships_on_tile = []
target_tile = floor(action)
for planet in planets:
planet_tile = self.grid.get_tile_id(planet.x, planet.y)
if planet_tile == target_tile and not planet.is_owned():
free_planets.append(planet)
elif planet_tile == target_tile and planet.owner.id != player_id:
enemy_planets.append(planet)
tile_center_x, tile_center_y = self.grid.get_tile_center_by_id(
target_tile)
for ship in enemy_ships:
ship_tile = self.grid.get_tile_id(ship.x, ship.y)
if ship_tile == target_tile:
enemy_ships_on_tile.append(ship)
if len(free_planets) > 0:
for ship in ships:
dest_planet = free_planets[np.argmin([
np.linalg.norm((planet.x - ship.x, planet.y - ship.y))
for planet in free_planets
])]
if ship.can_dock(dest_planet):
commands.append(ship.dock(dest_planet))
else:
commands.append(
navigate(world_map,
self.start_round,
ship,
ship.closest_point_to(dest_planet),
speed=int(hlt.constants.MAX_SPEED / 2)))
# elif len(enemy_ships_on_tile) > 0:
# for ship in ships:
# dest_ship = enemy_ships_on_tile[np.argmin([
# np.linalg.norm((enemy.x - ship.x, enemy.y - ship.y))
# for enemy in enemy_ships_on_tile
# ])]
# commands.append(attack(
# world_map,
# ship,
# Position(dest_ship.x, dest_ship.y),
# speed=int(hlt.constants.MAX_SPEED / 2)))
elif len(enemy_planets) > 0:
for ship in ships:
dest_planet = enemy_planets[np.argmin([
np.linalg.norm((planet.x - ship.x, planet.y - ship.y))
for planet in enemy_planets
])]
if len(dest_planet.all_docked_ships()) == 0:
if ship.can_dock(dest_planet):
commands.append(ship.dock(dest_planet))
else:
commands.append(
navigate(world_map,
self.start_round,
ship,
ship.closest_point_to(dest_planet),
speed=int(hlt.constants.MAX_SPEED / 2)))
else:
weakest_ship = None
for s in dest_planet.all_docked_ships():
if weakest_ship is None or weakest_ship.health > s.health:
weakest_ship = s
commands.append(
navigate(world_map, self.start_round, ship,
ship.closest_point_to(weakest_ship),
int(hlt.constants.MAX_SPEED / 2)))
else:
for ship in ships:
commands.append(
navigate(world_map,
self.start_round,
ship,
Position(tile_center_x, tile_center_y),
speed=int(hlt.constants.MAX_SPEED / 2)))
return commands
def compute_utility(self, x, y, ship, enemy_ships):
planet_utilities, docked_ship_utilities, enemy_ship_utility = [0
], [0
], 0
pos = Position(x, y)
if self._hide:
hiding_positions = [
Position(3, 3),
Position(self._game.map.width - 3, 3),
Position(3, self._game.map.height - 3),
Position(self._game.map.width - 3, self._game.map.height - 3)
]
utility = 0
for hiding_position in hiding_positions:
utility += 1 / pos.calculate_distance_sq_between(
hiding_position)
return utility
for planet in self._game.map.all_planets():
r = self.distance_to_planet(planet.id, x, y)
if r == np.infty:
continue
r += 1
planet_weight = 1 if self._num_players < 3 else self._planet_distance_from_center[
planet.id]
if not planet.is_owned() and self._should_i_dock:
free_docking_spots = planet.num_docking_spots - planet.num_docked_ships(
)
planet_utilities.append(planet_weight * free_docking_spots *
self._unowned_planet_weight / r**2)
elif planet.owner == self._game.map.get_me(
) and not planet.is_full() and self._should_i_dock:
planet_utilities.append(planet_weight *
self._owned_planet_weight / r**2)
elif planet.is_owned() and planet.owner != self._game.map.get_me():
planet_utilities.append(planet_weight *
self._enemy_planet_weight / r**2)
if r < self._r_attack_docked:
angle_pos = planet.calculate_angle_between(pos)
docked_ship_utility = 0
for docked_ship in planet.all_docked_ships():
angle_ship = planet.calculate_angle_between(
docked_ship)
angle_diff = (angle_ship - angle_pos) % 360
angle_diff = min(angle_diff, 360 - angle_diff)
docked_ship_utility += 180 - angle_diff
docked_ship_utilities.append(docked_ship_utility)
for enemy_ship in enemy_ships:
enemy_ship_previous = self._game.map.get_player_previous(
enemy_ship.owner.id).get_ship(enemy_ship.id)
enemy_ship_previous = enemy_ship_previous if enemy_ship_previous else enemy_ship
x, y = enemy_ship.x, enemy_ship.y
dx = enemy_ship.x - enemy_ship_previous.x
dy = enemy_ship.y - enemy_ship_previous.y
theta = self._expected_enemy_theta
expected_next_pos = Position(x + theta * dx, y + theta * dy)
r2 = pos.calculate_distance_sq_between(expected_next_pos)
if r2 < self._r2_chase_enemy:
enemy_ship_utility += self._enemy_weight / r2
return np.sum(planet_utilities) + max(
docked_ship_utilities) + enemy_ship_utility
def avoid_collision(self, ship, entity, collision):
logging.info('Avoid Collision')
logging.info(ship)
logging.info(entity)
logging.info(collision)
# We want to modifiy how much the ship moves based on
# If the ship is close to the target, deviate less
# If the ship is going slow, deviate less (will not move if speed is 0)
if ship.distance_to_target == 0 and entity.distance_to_target == 0:
# They both reached their targets
init_ship_modifier = (ship.magnitude / hlt.constants.MAX_SPEED)
init_entity_modifier = (entity.magnitude / hlt.constants.MAX_SPEED)
else:
init_ship_modifier = (ship.magnitude / hlt.constants.MAX_SPEED) * \
(ship.distance_to_target / (ship.distance_to_target + entity.distance_to_target))
init_entity_modifier = (entity.magnitude / hlt.constants.MAX_SPEED) * \
(entity.distance_to_target / (entity.distance_to_target + ship.distance_to_target))
if init_ship_modifier == 0 and init_entity_modifier == 0:
return # They are already colliding...
ship_modifier = init_ship_modifier / (init_ship_modifier +
init_entity_modifier)
entity_modifier = init_entity_modifier / (init_ship_modifier +
init_entity_modifier)
logging.info('ship_modifer: {} entity_modifer: {}'.format(
ship_modifier, entity_modifier))
if ship.magnitude == 0 and entity.magnitude == 0:
raise (Exception('Both ships are not moving...'))
# Note: By always taking the shortest path to something the rotation + distance modifier
# should (almost) always keep the ship in range of the target
# TODO: Check if the ships paths cross (below only works for co-liniar
# Find where the collision first happened
t = collision[3]
ship_position = Position(ship.x + ship.vel_x * t,
ship.y + ship.vel_y * t)
entity_position = Position(entity.x + entity.vel_x * t,
entity.y + entity.vel_y * t)
logging.info(
'collision happened at ship_position: {} entity_position: {}'.
format(ship_position, entity_position))
# Work out the closest point they meet
ship_velocity_step = Position(ship.vel_x / VELOCITY_STEPS,
ship.vel_y / VELOCITY_STEPS)
entity_velocity_step = Position(entity.vel_x / VELOCITY_STEPS,
entity.vel_y / VELOCITY_STEPS)
logging.info('velocity step ship: {} entity: {}'.format(
ship_velocity_step, entity_velocity_step))
min_distance = math.inf
velocity_step = None
min_ship_position = None
min_entity_position = None
for step in range(VELOCITY_STEPS):
current_ship_position = Position(
ship_position.x + ship_velocity_step.x * step,
ship_position.y + ship_velocity_step.y * step)
current_entity_position = Position(
entity_position.x + entity_velocity_step.x * step,
entity_position.y + entity_velocity_step.y * step)
distance = current_ship_position.calculate_distance_between(
current_entity_position)
if distance < min_distance:
min_distance = distance
velocity_step = step
min_ship_position = current_ship_position
min_entity_position = current_entity_position
logging.info('min distance {}'.format(min_distance))
# Required distance
required_distance = ship.radius + entity.radius
distance_to_deflect = required_distance - min_distance
logging.info('required_distance {}, distance_to_reflect'.format(
required_distance, distance_to_deflect))
if ship.docking_status != ship.DockingStatus.UNDOCKED:
logging.info('Ship is docked')
elif ship.magnitude == 0:
logging.info(
'Entity is not moving atm (it may have just started to dock)')
else:
new_ship_angle = self.get_deflected_angle(
ship, entity, distance_to_deflect * ship_modifier)
ship.thrust(ship.magnitude, new_ship_angle)
#logging.info('new_ship_angle {}, ship.magnitude'.format(ship.magnitude, new_ship_angle))
if isinstance(entity, hlt.entity.Planet):
logging.info('Entity is planet')
elif entity.docking_status != entity.DockingStatus.UNDOCKED:
logging.info('Entity is docked')
elif entity.magnitude == 0:
logging.info(
'Entity is not moving atm (it may have just started to dock)')
else:
new_entity_angle = self.get_deflected_angle(
entity, ship, distance_to_deflect * entity_modifier)
entity.thrust(entity.magnitude, new_entity_angle)
logging.info('new_entity_angle {}, entity.magnitude'.format(
new_entity_angle, entity.magnitude))
# Then we print our start message to the logs
logging.info("Starting my Greedy bot!")
game_state = 0
first_turn = True
while True:
# TURN START
# Update the map for the new turn and get the latest version
game_map = game.update_map()
if first_turn == True:
enemies = game_map.all_players()
enemies.remove(game_map.get_me())
centre_place = Position(0, 0)
centre_place.x = game_map.get_me().all_ships()[0].x
centre_place.y = game_map.get_me().all_ships()[0].y
centre_enemy = Position(0, 0)
for enemy in enemies:
centre_enemy.x += enemy.all_ships()[0].x
centre_enemy.y += enemy.all_ships()[0].y
centre_enemy.x /= len(enemies)
centre_enemy.y /= len(enemies)
first_turn = False
#logging.info("Centre.x: " + str(centre_place.x))
#logging.info("Centre.y: " + str(centre_place.y))
# Here we define the set of commands to be sent to the Halite engine at the end of the turn
def compute_command_queue(self):
my_ships = [ship for ship in self._game.map.get_me().all_ships()]
my_docked_ships = [
ship for ship in my_ships
if ship.docking_status in (Ship.DockingStatus.DOCKED,
Ship.DockingStatus.DOCKING,
Ship.DockingStatus.UNDOCKING)
]
my_undocked_ships = [
ship for ship in my_ships
if ship.docking_status == Ship.DockingStatus.UNDOCKED
]
enemy_ships = [
ship for player in self._game.map.all_players()
if not player == self._game.map.get_me()
for ship in player.all_ships()
]
moves = []
def no_collision(source: Entity, target: Entity):
for s, t in moves:
collision_possible = abs(source.x -
s.x) < 15 and abs(source.y - s.y) < 15
if collision_possible and min_r2(source, target, s, t) < 1.001:
return False
return True
for ship in my_docked_ships:
moves.append((ship, ship))
potential_new_positions_and_utilities = []
free_docking_spots = {}
for planet in self._game.map.all_planets():
if not planet.is_owned() or planet.owner == self._game.map.get_me(
):
free_docking_spots[
planet.
id] = planet.num_docking_spots - planet.num_docked_ships()
else:
free_docking_spots[planet.id] = 0
for ship in my_undocked_ships:
time_left = self.time_left()
if time_left < 0.3:
break
potential_new_positions_and_utilities += self.compute_potential_new_positions_and_utilities(
ship, enemy_ships)
command_queue = []
ships_moved = set()
if self._should_i_undock:
for ship in my_docked_ships:
if ship.docking_status == Ship.DockingStatus.DOCKED:
command_queue.append(ship.undock())
for utility, new_x, new_y, speed, angle, ship in sorted(
potential_new_positions_and_utilities, key=first):
time_left = self.time_left()
if time_left < 0.2:
return command_queue
if ship not in ships_moved:
for planet in self._game.map.all_planets():
if self._should_i_dock and free_docking_spots[
planet.id] > 0 and ship.can_dock(
planet) and no_collision(
ship, ship) and self.no_enemy_close(
ship, enemy_ships):
free_docking_spots[planet.id] -= 1
command_queue.append(ship.dock(planet))
ships_moved.add(ship)
moves.append((ship, ship))
# print('Ship {}: I''m docking'.format(ship.id))
break
else:
new_position = Position(new_x, new_y)
if no_collision(
ship, new_position) and self.no_crash_into_planet(
ship, new_position):
command_queue.append(ship.thrust(speed, angle))
ships_moved.add(ship)
moves.append((ship, new_position))
# print('Ship {}: I''m moving to {} {} ({})'.format(ship.id, new_x, new_y, utility))
return command_queue
move_table[s] = move
unassigned.discard(s)
elif type(e) == hlt.entity.Ship:
# WITHIN POTENTIAL ATTACK RANGE
if s.dist_to(e) <= WEAPON_RADIUS + 2 * MAX_SPEED:
if not doomed:
# ATTACK
if s in has_atked:
nav_cmd, move = helper.nav(s,
s.closest_pt_to(e, 6),
gmap, None, move_table)
else:
nav_cmd, move = helper.nav(s, s.closest_pt_to(e),
gmap, None, move_table)
if move:
atk_pos = Position(move.p2)
else:
atk_pos = Position(
s.loc,
s.loc + Point.polar(MAX_SPEED, s.angle_to(e)))
atk_ens = [
t for t in gmap.en_uships()
if t.dist_to(atk_pos) <= WEAPON_RADIUS + MAX_SPEED
]
atk_frs = [
t for t in gmap.my_uships()
if t.dist_to(atk_pos) <= MAX_SPEED + 2
]
if len(atk_frs) > len(atk_ens):
if nav_cmd:
en_ship_assigned[e] -= 1
