def gen_env(number_agents, width, height, n_start_goal, seed):
speed_ration_map = {
1.: 0.25, # Fast passenger train
1. / 2.: 0.25, # Fast freight train
1. / 3.: 0.25, # Slow commuter train
1. / 4.: 0.25
} # Slow freight train
env = RailEnv(width=width,
height=height,
rail_generator=complex_rail_generator(
nr_start_goal=n_start_goal,
nr_extra=3,
min_dist=6,
max_dist=99999,
seed=seed),
schedule_generator=complex_schedule_generator(
speed_ratio_map=speed_ration_map),
number_of_agents=number_agents,
obs_builder_object=TreeObsForRailEnv(max_depth=5))
env.reset()
env.step(dict(zip(range(number_agents), [2] * number_agents)))
return env
def demo(args=None):
"""Demo script to check installation"""
env = RailEnv(width=15,
height=15,
rail_generator=complex_rail_generator(nr_start_goal=10,
nr_extra=1,
min_dist=8,
max_dist=99999),
schedule_generator=complex_schedule_generator(),
number_of_agents=5)
env._max_episode_steps = int(15 * (env.width + env.height))
env_renderer = RenderTool(env)
while True:
obs, info = env.reset()
_done = False
# Run a single episode here
step = 0
while not _done:
# Compute Action
_action = {}
for _idx, _ in enumerate(env.agents):
_action[_idx] = np.random.randint(0, 5)
obs, all_rewards, done, _ = env.step(_action)
_done = done['__all__']
step += 1
env_renderer.render_env(show=True,
frames=False,
show_observations=False,
show_predictions=False)
time.sleep(0.3)
return 0
def test_save_load():
env = RailEnv(width=10, height=10,
rail_generator=complex_rail_generator(nr_start_goal=2, nr_extra=5, min_dist=6, seed=1),
schedule_generator=complex_schedule_generator(), number_of_agents=2)
env.reset()
agent_1_pos = env.agents[0].position
agent_1_dir = env.agents[0].direction
agent_1_tar = env.agents[0].target
agent_2_pos = env.agents[1].position
agent_2_dir = env.agents[1].direction
agent_2_tar = env.agents[1].target
os.makedirs("tmp", exist_ok=True)
RailEnvPersister.save(env, "tmp/test_save.pkl")
env.save("tmp/test_save_2.pkl")
#env.load("test_save.dat")
env, env_dict = RailEnvPersister.load_new("tmp/test_save.pkl")
assert (env.width == 10)
assert (env.height == 10)
assert (len(env.agents) == 2)
assert (agent_1_pos == env.agents[0].position)
assert (agent_1_dir == env.agents[0].direction)
assert (agent_1_tar == env.agents[0].target)
assert (agent_2_pos == env.agents[1].position)
assert (agent_2_dir == env.agents[1].direction)
assert (agent_2_tar == env.agents[1].target)
def test_normalize_features():
random.seed(1)
np.random.seed(1)
max_depth = 4
for i in range(10):
tree_observer = TreeObsForRailEnv(max_depth=max_depth)
next_rand_number = random.randint(0, 100)
env = RailEnv(width=10,
height=10,
rail_generator=complex_rail_generator(
nr_start_goal=10,
nr_extra=1,
min_dist=8,
max_dist=99999,
seed=next_rand_number),
schedule_generator=complex_schedule_generator(),
number_of_agents=1,
obs_builder_object=tree_observer)
obs, all_rewards, done, _ = env.step({0: 0})
obs_new = tree_observer.get()
# data, distance, agent_data = split_tree(tree=np.array(obs_old), num_features_per_node=11)
data_normalized = normalize_observation(obs_new,
max_depth,
observation_radius=10)
filename = 'testdata/test_array_{}.csv'.format(i)
data_loaded = np.loadtxt(filename, delimiter=',')
assert np.allclose(data_loaded, data_normalized)
def test_save_load():
env = RailEnv(width=10,
height=10,
rail_generator=complex_rail_generator(nr_start_goal=2,
nr_extra=5,
min_dist=6,
seed=1),
schedule_generator=complex_schedule_generator(),
number_of_agents=2)
env.reset()
agent_1_pos = env.agents[0].position
agent_1_dir = env.agents[0].direction
agent_1_tar = env.agents[0].target
agent_2_pos = env.agents[1].position
agent_2_dir = env.agents[1].direction
agent_2_tar = env.agents[1].target
env.save("test_save.dat")
env.load("test_save.dat")
assert (env.width == 10)
assert (env.height == 10)
assert (len(env.agents) == 2)
assert (agent_1_pos == env.agents[0].position)
assert (agent_1_dir == env.agents[0].direction)
assert (agent_1_tar == env.agents[0].target)
assert (agent_2_pos == env.agents[1].position)
assert (agent_2_dir == env.agents[1].direction)
assert (agent_2_tar == env.agents[1].target)
def regenerate(self, method=None, nAgents=0, env=None):
self.log("Regenerate size", self.regen_size_width,
self.regen_size_height)
if method is None or method == "Empty":
fnMethod = empty_rail_generator()
elif method == "Random Cell":
fnMethod = random_rail_generator(
cell_type_relative_proportion=[1] * 11)
else:
fnMethod = complex_rail_generator(nr_start_goal=nAgents,
nr_extra=20,
min_dist=12,
seed=int(time.time()))
if env is None:
self.env = RailEnv(
width=self.regen_size_width,
height=self.regen_size_height,
rail_generator=fnMethod,
number_of_agents=nAgents,
obs_builder_object=TreeObsForRailEnv(max_depth=2))
else:
self.env = env
self.env.reset(regenerate_rail=True)
self.fix_env()
self.set_env(self.env)
self.view.new_env()
self.redraw()
def create_testfiles(parameters, test_nr=0, nr_trials_per_test=100):
# Parameter initialization
print('Creating {} with (x_dim,y_dim) = ({},{}) and {} Agents.'.format(
test_nr, parameters[0], parameters[1], parameters[2]))
# Reset environment
random.seed(parameters[3])
np.random.seed(parameters[3])
nr_paths = max(4, parameters[2] + int(0.5 * parameters[2]))
min_dist = int(min([parameters[0], parameters[1]]) * 0.75)
env = RailEnv(width=parameters[0],
height=parameters[1],
rail_generator=complex_rail_generator(nr_start_goal=nr_paths,
nr_extra=5,
min_dist=min_dist,
max_dist=99999,
seed=parameters[3]),
schedule_generator=complex_schedule_generator(),
obs_builder_object=TreeObsForRailEnv(max_depth=2),
number_of_agents=parameters[2])
printProgressBar(0,
nr_trials_per_test,
prefix='Progress:',
suffix='Complete',
length=20)
for trial in range(nr_trials_per_test):
# Reset the env
env.reset(True, True)
env.save("./Tests/{}/Level_{}.pkl".format(test_nr, trial))
printProgressBar(trial + 1,
nr_trials_per_test,
prefix='Progress:',
suffix='Complete',
length=20)
return
def create_env(number_agents,width,height,n_start_goal,seed):
env = RailEnv(width=width,
height=height,
rail_generator=complex_rail_generator(nr_start_goal=n_start_goal,
nr_extra=1,
min_dist=6,
max_dist=99999,
seed = seed),
schedule_generator=complex_schedule_generator(),
number_of_agents=number_agents)
return env
def main(args):
try:
opts, args = getopt.getopt(args, "", ["sleep-for-animation=", ""])
except getopt.GetoptError as err:
print(str(err)) # will print something like "option -a not recognized"
sys.exit(2)
sleep_for_animation = True
for o, a in opts:
if o in ("--sleep-for-animation"):
sleep_for_animation = str2bool(a)
else:
assert False, "unhandled option"
# Initiate the Predictor
custom_predictor = ShortestPathPredictorForRailEnv(10)
# Pass the Predictor to the observation builder
custom_obs_builder = ObservePredictions(custom_predictor)
# Initiate Environment
env = RailEnv(width=10,
height=10,
rail_generator=complex_rail_generator(nr_start_goal=5,
nr_extra=1,
min_dist=8,
max_dist=99999,
seed=1),
schedule_generator=complex_schedule_generator(),
number_of_agents=3,
obs_builder_object=custom_obs_builder)
obs, info = env.reset()
env_renderer = RenderTool(env, gl="PILSVG")
# We render the initial step and show the obsered cells as colored boxes
env_renderer.render_env(show=True,
frames=True,
show_observations=True,
show_predictions=False)
action_dict = {}
for step in range(100):
for a in range(env.get_num_agents()):
action = np.random.randint(0, 5)
action_dict[a] = action
obs, all_rewards, done, _ = env.step(action_dict)
print("Rewards: ", all_rewards, " [done=", done, "]")
env_renderer.render_env(show=True,
frames=True,
show_observations=True,
show_predictions=False)
if sleep_for_animation:
time.sleep(0.5)
def generator_from_seed(nr_start_goal=1,
nr_extra=100,
min_dist=20,
max_dist=99999,
seed=0):
rail_generator = complex_rail_generator(nr_start_goal, nr_extra, min_dist,
max_dist, seed)
def generator(width, height, num_agents, num_resets=0):
return rail_generator(width, height, num_agents, 0)
return generator
def env_creator():
"""
Creates an env and returns it
"""
return RailEnv(width=20,
height=30,
rail_generator=complex_rail_generator(nr_start_goal=100,
nr_extra=2,
min_dist=8,
max_dist=99999,
seed=False),
schedule_generator=complex_schedule_generator(seed=False),
obs_builder_object=GlobalObsForRailEnv(),
number_of_agents=3,
random_seed=True)
def test_complex_rail_generator():
n_agents = 10
n_start = 2
x_dim = 10
y_dim = 10
min_dist = 4
# Check that agent number is changed to fit generated level
env = RailEnv(width=x_dim, height=y_dim,
rail_generator=complex_rail_generator(nr_start_goal=n_start, nr_extra=0, min_dist=min_dist),
schedule_generator=complex_schedule_generator(), number_of_agents=n_agents)
env.reset()
assert env.get_num_agents() == 2
assert env.rail.grid.shape == (y_dim, x_dim)
min_dist = 2 * x_dim
# Check that no agents are generated when level cannot be generated
env = RailEnv(width=x_dim, height=y_dim,
rail_generator=complex_rail_generator(nr_start_goal=n_start, nr_extra=0, min_dist=min_dist),
schedule_generator=complex_schedule_generator(), number_of_agents=n_agents)
env.reset()
assert env.get_num_agents() == 0
assert env.rail.grid.shape == (y_dim, x_dim)
# Check that everything stays the same when correct parameters are given
min_dist = 2
n_start = 5
n_agents = 5
env = RailEnv(width=x_dim, height=y_dim,
rail_generator=complex_rail_generator(nr_start_goal=n_start, nr_extra=0, min_dist=min_dist),
schedule_generator=complex_schedule_generator(), number_of_agents=n_agents)
env.reset()
assert env.get_num_agents() == n_agents
assert env.rail.grid.shape == (y_dim, x_dim)
def test_multi_speed_init():
env = RailEnv(width=50,
height=50,
rail_generator=complex_rail_generator(nr_start_goal=10,
nr_extra=1,
min_dist=8,
max_dist=99999,
seed=1),
schedule_generator=complex_schedule_generator(),
number_of_agents=5)
# Initialize the agent with the parameters corresponding to the environment and observation_builder
agent = RandomAgent(218, 4)
# Empty dictionary for all agent action
action_dict = dict()
# Set all the different speeds
# Reset environment and get initial observations for all agents
env.reset(False, False, True)
# Here you can also further enhance the provided observation by means of normalization
# See training navigation example in the baseline repository
old_pos = []
for i_agent in range(env.get_num_agents()):
env.agents[i_agent].speed_data['speed'] = 1. / (i_agent + 1)
old_pos.append(env.agents[i_agent].position)
# Run episode
for step in range(100):
# Choose an action for each agent in the environment
for a in range(env.get_num_agents()):
action = agent.act(0)
action_dict.update({a: action})
# Check that agent did not move in between its speed updates
assert old_pos[a] == env.agents[a].position
# Environment step which returns the observations for all agents, their corresponding
# reward and whether they are done
_, _, _, _ = env.step(action_dict)
# Update old position whenever an agent was allowed to move
for i_agent in range(env.get_num_agents()):
if (step + 1) % (i_agent + 1) == 0:
print(step, i_agent, env.agents[i_agent].position)
old_pos[i_agent] = env.agents[i_agent].position
def test_rail_env_speed_intializer():
speed_ratio_map = {1: 0.3, 2: 0.4, 3: 0.1, 5: 0.2}
env = RailEnv(width=50, height=50,
rail_generator=complex_rail_generator(nr_start_goal=10, nr_extra=1, min_dist=8, max_dist=99999,
seed=1), schedule_generator=complex_schedule_generator(),
number_of_agents=10)
env.reset()
actual_speeds = list(map(lambda agent: agent.speed_data['speed'], env.agents))
expected_speed_set = set(speed_ratio_map.keys())
# check that the number of speeds generated is correct
assert len(actual_speeds) == env.get_num_agents()
# check that only the speeds defined are generated
assert all({(actual_speed in expected_speed_set) for actual_speed in actual_speeds})
def env_gradual_update(input_env, agent=False, hardness_lvl=1):
agent_num = input_env.number_of_agents
env_width = input_env.width + 4
env_height = input_env.height + 4
map_agent_ratio = int(np.round(((env_width + env_height) / 2) / 5 - 2))
if map_agent_ratio > 0:
agent_num = int(np.round(((env_width + env_height) / 2) / 5 - 2))
else:
agent_num = 1
if hardness_lvl == 1:
rail_generator = complex_rail_generator(nr_start_goal=20,
nr_extra=1,
min_dist=9,
max_dist=99999,
seed=0)
schedule_generator = complex_schedule_generator()
else:
rail_generator = sparse_rail_generator(nr_start_goal=9,
nr_extra=1,
min_dist=9,
max_dist=99999,
seed=0)
schedule_generator = sparse_schedule_generator()
global env, env_renderer, render
if render:
env_renderer.close_window()
env = RailEnv(width=env_width,
height=env_height,
rail_generator=rail_generator,
schedule_generator=schedule_generator,
obs_builder_object=GlobalObsForRailEnv(),
number_of_agents=agent_num)
env_renderer = RenderTool(env)
def create_env(nr_start_goal=10,
nr_extra=2,
min_dist=8,
max_dist=99999,
nr_agent=10,
seed=0,
render_mode='PIL'):
env = RailEnv(width=30,
height=30,
rail_generator=complex_rail_generator(
nr_start_goal, nr_extra, min_dist, max_dist, seed),
schedule_generator=complex_schedule_generator(),
obs_builder_object=GlobalObsForRailEnv(),
number_of_agents=nr_agent)
env_renderer = RenderTool(env, gl=render_mode)
obs = env.reset()
return env, env_renderer, obs
def create_multi_agent_environment(dimension, num_agents, timed, seed):
# Create new environment.
env = RailEnv(width=dimension,
height=dimension,
rail_generator=complex_rail_generator(
nr_start_goal=int(1.5 * num_agents),
nr_extra=int(1.2 * num_agents),
min_dist=int(floor(dimension / 2)),
max_dist=99999,
seed=0),
schedule_generator=complex_schedule_generator(timed=timed),
malfunction_generator_and_process_data=None,
number_of_agents=num_agents)
env.reset(random_seed=int(seed))
return env
def test_schedule_from_file_complex():
"""
Test to see that all parameters are loaded as expected
Returns
-------
"""
# Different agent types (trains) with different speeds.
speed_ration_map = {
1.: 0.25, # Fast passenger train
1. / 2.: 0.25, # Fast freight train
1. / 3.: 0.25, # Slow commuter train
1. / 4.: 0.25
} # Slow freight train
# Generate complex test env
rail_generator = complex_rail_generator(nr_start_goal=10,
nr_extra=1,
min_dist=8,
max_dist=99999)
schedule_generator = complex_schedule_generator(speed_ration_map)
create_and_save_env(file_name="./complex_env_test.pkl",
rail_generator=rail_generator,
schedule_generator=schedule_generator)
# Load the different envs and check the parameters
# Complex generator
rail_generator = rail_from_file("./complex_env_test.pkl")
schedule_generator = schedule_from_file("./complex_env_test.pkl")
complex_env_from_file = RailEnv(width=1,
height=1,
rail_generator=rail_generator,
schedule_generator=schedule_generator)
complex_env_from_file.reset(True, True)
# Assert loaded agent number is correct
assert complex_env_from_file.get_num_agents() == 10
# Assert max steps is correct
assert complex_env_from_file._max_episode_steps == 1350
def test_save_load_mpk():
env = RailEnv(width=10, height=10,
rail_generator=complex_rail_generator(nr_start_goal=2, nr_extra=5, min_dist=6, seed=1),
schedule_generator=complex_schedule_generator(), number_of_agents=2)
env.reset()
os.makedirs("tmp", exist_ok=True)
RailEnvPersister.save(env, "tmp/test_save.mpk")
#env.load("test_save.dat")
env2, env_dict = RailEnvPersister.load_new("tmp/test_save.mpk")
assert (env.width == env2.width)
assert (env.height == env2.height)
assert (len(env2.agents) == len(env.agents))
for agent1, agent2 in zip(env.agents, env2.agents):
assert(agent1.position == agent2.position)
assert(agent1.direction == agent2.direction)
assert(agent1.target == agent2.target)
def run_benchmark():
"""Run benchmark on a small number of agents in complex rail environment."""
random.seed(1)
np.random.seed(1)
# Example generate a random rail
env = RailEnv(width=15,
height=15,
rail_generator=complex_rail_generator(nr_start_goal=5,
nr_extra=20,
min_dist=12),
schedule_generator=complex_schedule_generator(),
number_of_agents=5)
env.reset()
n_trials = 20
action_dict = dict()
action_prob = [0] * 4
for trials in range(1, n_trials + 1):
# Reset environment
obs, info = env.reset()
# Run episode
for step in range(100):
# Action
for a in range(env.get_num_agents()):
action = np.random.randint(0, 4)
action_prob[action] += 1
action_dict.update({a: action})
# Environment step
next_obs, all_rewards, done, _ = env.step(action_dict)
if done['__all__']:
break
if trials % 100 == 0:
action_prob = [1] * 4
def create_env(seed=None):
"""
Helper function that creates an env everywhere
This way it only needs to be defined here
"""
from flatland.envs.rail_env import RailEnv
from flatland.envs.observations import TreeObsForRailEnv
from flatland.envs.rail_generators import complex_rail_generator
from flatland.envs.schedule_generators import complex_schedule_generator
# TODO make more configurable
env = RailEnv(width=20,
height=20,
obs_builder_object=TreeObsForRailEnv(2),
rail_generator=complex_rail_generator(nr_start_goal=100,
nr_extra=2,
min_dist=8,
max_dist=99999,
seed=seed),
schedule_generator=complex_schedule_generator(seed=seed),
number_of_agents=3,
random_seed=seed)
return env
def env_random_update(input_env, decay, agent=False, hardness_lvl=1):
agent_num = np.random.randint(1, 5)
env_width = (agent_num + 2) * 5
env_height = (agent_num + 2) * 5
if hardness_lvl == 1:
rail_generator = complex_rail_generator(nr_start_goal=20,
nr_extra=1,
min_dist=9,
max_dist=99999,
seed=0)
schedule_generator = complex_schedule_generator()
else:
rail_generator = sparse_rail_generator(nr_start_goal=9,
nr_extra=1,
min_dist=9,
max_dist=99999,
seed=0)
schedule_generator = sparse_schedule_generator()
global env, env_renderer, render
if render:
env_renderer.close_window()
env = RailEnv(width=env_width,
height=env_height,
rail_generator=rail_generator,
schedule_generator=schedule_generator,
obs_builder_object=GlobalObsForRailEnv(),
number_of_agents=agent_num)
env_renderer = RenderTool(env)
def update_env_with_params(self,
width,
height,
num_agents,
max_steps,
rail_type,
rail_gen_params,
seed=-1):
if seed == -1:
seed = random.randint(0, 100000)
self.num_agents = num_agents
self.max_steps = max_steps
if rail_type == 'complex':
self.rail_gen = complex_rail_generator(
nr_start_goal=rail_gen_params['nr_start_goal'],
nr_extra=rail_gen_params['nr_extra'],
min_dist=rail_gen_params['min_dist'],
max_dist=rail_gen_params['max_dist'],
seed=seed)
#self.schedule_gen = complex_schedule_generator()
elif rail_type == 'sparse':
self.rail_gen = sparse_rail_generator(
max_num_cities=rail_gen_params['num_cities'],
seed=seed,
grid_mode=rail_gen_params['grid_mode'],
max_rails_between_cities=rail_gen_params[
'max_rails_between_cities'],
max_rails_in_city=rail_gen_params['max_rails_in_city'])
else:
raise ValueError(
'Please specify either "complex" or "sparse" as rail_type')
self.generate_env(width, height)
def main(args):
try:
opts, args = getopt.getopt(args, "", ["sleep-for-animation=", ""])
except getopt.GetoptError as err:
print(str(err)) # will print something like "option -a not recognized"
sys.exit(2)
sleep_for_animation = True
for o, a in opts:
if o in ("--sleep-for-animation"):
sleep_for_animation = str2bool(a)
else:
assert False, "unhandled option"
env = RailEnv(width=7,
height=7,
rail_generator=complex_rail_generator(nr_start_goal=10,
nr_extra=1,
min_dist=5,
max_dist=99999,
seed=1),
schedule_generator=complex_schedule_generator(),
number_of_agents=1,
obs_builder_object=SingleAgentNavigationObs())
obs, info = env.reset()
env_renderer = RenderTool(env)
env_renderer.render_env(show=True, frames=True, show_observations=True)
for step in range(100):
action = np.argmax(obs[0]) + 1
obs, all_rewards, done, _ = env.step({0: action})
print("Rewards: ", all_rewards, " [done=", done, "]")
env_renderer.render_env(show=True, frames=True, show_observations=True)
if sleep_for_animation:
time.sleep(0.1)
if done["__all__"]:
break
env_renderer.close_window()
import glob
seed = 69 #nice
width = 10 # @param{type: "integer"}
height = 10 # @param{type: "integer"}
num_agents = 4 # @param{type: "integer"}
tree_depth = 2 # @param{type: "integer"}
radius_observation = 10
WINDOW_LENGTH = 22 # @param{type: "integer"}
random_rail_generator = complex_rail_generator(
nr_start_goal=10, # @param{type:"integer"} number of start and end goals
# connections, the higher the easier it should be for
# the trains
nr_extra=10, # @param{type:"integer"} extra connections
# (useful for alternite paths), the higher the easier
min_dist=10,
max_dist=99999,
seed=seed)
env = RailEnv(width=width,
height=height,
rail_generator=random_rail_generator,
obs_builder_object=TreeObsForRailEnv(tree_depth),
number_of_agents=num_agents)
obs, info = env.reset()
env_renderer = RenderTool(env)
handle, new_position[0], new_position[1],
direction] / 100
else:
current['valid'] = False
current['distance_to_goal'] = np.inf
return weights
seed = random.randint(0, 2**32)
print(f"Seed: {seed}")
env = RailEnv(width=20,
height=20,
rail_generator=complex_rail_generator(nr_start_goal=10,
nr_extra=10,
min_dist=5,
max_dist=99999,
seed=seed),
schedule_generator=complex_schedule_generator(),
number_of_agents=1,
obs_builder_object=CustomWeightObserver())
env_renderer = RenderTool(env, gl="PILSVG")
agent = AbelAgent(218, 5)
n_trials = 50
for trials in range(1, n_trials + 1):
# Reset Environment
obs = env.reset()
env_renderer.reset()
def make_env(env_params, random_seed=True):
"""
Make env, setup calculate constants
@param env_params: setup parameters
@param random_seed: whether to use random seed
@return: env, state_size, action_size, max_steps for given env
"""
# Obs builder
if env_params.use_predictor:
tree_observation = TreeObsForRailEnv(
max_depth=env_params.observation_tree_depth,
predictor=ShortestPathPredictorForRailEnv(30))
else:
tree_observation = TreeObsForRailEnv(
max_depth=env_params.observation_tree_depth)
seed = env_params.seed if env_params.seed != -1 else random.randint(0, 100)
n_agents = env_params.n_agents
x_dim = env_params.x_dim
y_dim = env_params.y_dim
# for now
# n_agents = env_params.n_agents_min
print(
f"Env generation seed: {seed}, agents: {n_agents}, rows: {y_dim}, cols: {x_dim}"
)
if env_params.rail_generator == "sparse":
# n_cities = random.randint(env_params.n_cities_min, env_params.n_cities_max)
rail_gen = sparse_rail_generator(
max_num_cities=env_params.n_cities,
seed=seed,
grid_mode=False,
max_rails_between_cities=env_params.max_rails_between_cities,
max_rails_in_city=env_params.max_rails_in_city)
else:
n_goals = n_agents + random.randint(0, 3)
min_dist = int(0.75 * min(x_dim, y_dim))
rail_gen = complex_rail_generator(nr_start_goal=n_goals,
nr_extra=25,
min_dist=min_dist,
max_dist=9999,
seed=seed)
# setup env
env = RailEnv(width=x_dim,
height=y_dim,
rail_generator=rail_gen,
schedule_generator=sparse_schedule_generator(),
number_of_agents=n_agents,
obs_builder_object=tree_observation)
env.reset(regenerate_rail=True, regenerate_schedule=True)
# calc state size given the depth of the tree and num features
n_features_per_node = env.obs_builder.observation_dim
n_nodes = 0
for i in range(env_params.observation_tree_depth + 1):
n_nodes += np.power(4, i)
frame_stack_mult = 1
if env_params.stack_obs:
frame_stack_mult = env_params.how_many_stack
state_size = frame_stack_mult * n_features_per_node * n_nodes
# there are always 5 actions
action_size = 5
# official formula
if env_params.rail_generator == "sparse":
max_steps = int(4 * 2 * (env.height + env.width +
(env_params.n_agents / env_params.n_cities)))
else:
max_steps = int(3 * (env.height + env.width))
random.seed()
return env, state_size, action_size, max_steps
def evalfun(debug=False, refresh=0.1): # refresh default = 0.1
# A list of (mapsize, agent count) tuples, change or extend this to test different sizes.
#problemsizes = [(5, 1), (7, 2), (10,3), (13,4), (40, 20)]
#problemsizes = [(5, 1), (5,2), (6,3), (7,3), (14,4), (8,5)]
problemsizes = [(6, 3)]
_seed = np.random.randint(1, 9999999)
#_seed = 2
print("Seed:", _seed)
print("%10s\t%8s\t%9s" % ("Dimensions", "Success", "Runtime"))
for problemsize in problemsizes:
dimension = problemsize[0]
NUMBER_OF_AGENTS = problemsize[1]
# Create new environment.
env = RailEnv(width=dimension,
height=dimension,
rail_generator=complex_rail_generator(
nr_start_goal=int(1.5 * NUMBER_OF_AGENTS),
nr_extra=int(1.2 * NUMBER_OF_AGENTS),
min_dist=int(floor(dimension / 2)),
max_dist=99999,
seed=0),
schedule_generator=complex_schedule_generator(),
malfunction_generator_and_process_data=None,
number_of_agents=NUMBER_OF_AGENTS)
env_renderer = RenderTool(env, screen_width=1920, screen_height=1080)
# Initialize positions.
env.reset(random_seed=_seed)
env_renderer.render_env(show=True,
frames=False,
show_observations=False)
# Time the search.
start = time.time()
schedule = planpath.search(env)
#schedule = planpath.better_search(env)
duration = time.time() - start
if debug:
env_renderer.render_env(show=True,
frames=False,
show_observations=False)
time.sleep(refresh)
# Validate that environment state is unchanged.
assert env.num_resets == 1 and env._elapsed_steps == 0
# Run the schedule
success = False
for action in schedule:
_, _, _done, _ = env.step(action)
success = _done['__all__']
#print(env.agents)
if debug:
#for agent in env.agents:
#if agent.position:
#agent_y, agent_x = agent.position
#print(env.get_valid_directions_on_grid(agent_y,agent_x))
print(action)
env_renderer.render_env(show=True,
frames=False,
show_observations=False)
time.sleep(refresh)
# Print the performance of the algorithm
print("%10s\t%8s\t%9.6f" % (str(problemsize), str(success), duration))
def evalfun(debug=False, refresh=0.1): # refresh default = 0.1
# A list of (mapsize, agent count) tuples, change or extend this to test different sizes.
#problemsizes = [(5, 1), (7, 2), (10,3), (13,4), (40, 20)]
_seeds = np.random.randint(1, 99, 15)
#_seed = 2984379
avg = {}
for x in range(1, 4):
avg[x] = []
problemsizes = [(5, x), (6, x), (8, x), (10, x), (15, x)]
for problemsize in problemsizes:
avg_time = 0
successes = 0
for seed in _seeds:
dimension = problemsize[0]
NUMBER_OF_AGENTS = problemsize[1]
# Create new environment.
env = RailEnv(width=dimension,
height=dimension,
rail_generator=complex_rail_generator(
nr_start_goal=int(1.5 * NUMBER_OF_AGENTS),
nr_extra=int(1.2 * NUMBER_OF_AGENTS),
min_dist=int(floor(dimension / 2)),
max_dist=99999,
seed=0),
schedule_generator=complex_schedule_generator(),
malfunction_generator_and_process_data=None,
number_of_agents=NUMBER_OF_AGENTS)
env_renderer = RenderTool(env,
screen_width=1920,
screen_height=1080)
env.reset(random_seed=int(seed))
if len(env.agents) != NUMBER_OF_AGENTS:
continue
start = time.time()
schedule = planpath.search(env)
duration = time.time() - start
assert env.num_resets == 1 and env._elapsed_steps == 0
# Run the schedule
success = False
if schedule is not None:
for action in schedule:
_, _, _done, _ = env.step(action)
success = _done['__all__']
#print(env.agents)
if success:
avg_time += duration
print("Success:", problemsize, seed, duration)
successes += 1
else:
print("Bad schedule - failed.")
else:
print("Couldn't find solution for seed: ", duration, seed)
env_renderer.render_env(show=True,
frames=False,
show_observations=False)
avg_time = avg_time / successes
avg[x].append((problemsize[0], avg_time))
#print("%10s\t%8s\t%9s" % ("Dimensions", "Success", "Runtime"))
#
# Initialize positions.
# Time the search.
#if debug:
#env_renderer.render_env(show=True, frames=False, show_observations=False)
#time.sleep(refresh)
# Validate that environment state is unchanged.
# Print the performance of the algorithm
#print("%10s\t%8s\t%9.6f" % (str(problemsize), str(success), duration))
print(avg)
from reinforcement_learning.ordered_policy import OrderedPolicy
np.random.seed(2)
x_dim = 20 # np.random.randint(8, 20)
y_dim = 20 # np.random.randint(8, 20)
n_agents = 10 # np.random.randint(3, 8)
n_goals = n_agents + np.random.randint(0, 3)
min_dist = int(0.75 * min(x_dim, y_dim))
env = RailEnv(width=x_dim,
height=y_dim,
rail_generator=complex_rail_generator(
nr_start_goal=n_goals, nr_extra=5, min_dist=min_dist,
max_dist=99999,
seed=0
),
schedule_generator=complex_schedule_generator(),
obs_builder_object=TreeObsForRailEnv(max_depth=1, predictor=ShortestPathPredictorForRailEnv()),
number_of_agents=n_agents)
env.reset(True, True)
tree_depth = 1
observation_helper = TreeObsForRailEnv(max_depth=tree_depth, predictor=ShortestPathPredictorForRailEnv())
env_renderer = RenderTool(env, gl="PGL", )
handle = env.get_agent_handles()
n_episodes = 1
max_steps = 100 * (env.height + env.width)
record_images = False
policy = OrderedPolicy()