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Fix collision detection

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This commit is contained in:
kngwyu 2020-05-31 16:37:06 +09:00
parent bd7dd5bcfc
commit 33032dd48e
7 changed files with 30 additions and 15 deletions
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2
mujoco_maze/__init__.py
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@ -40,7 +40,7 @@ for maze_id in MAZE_IDS:
entry_point="mujoco_maze.point_maze_env:PointMazeEnv",
kwargs=dict(**_get_kwargs(maze_id), dense_reward=False),
max_episode_steps=1000,
reward_threshold=0.9
reward_threshold=0.9,
)

10
mujoco_maze/agent_model.py
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@ -3,6 +3,7 @@
from abc import ABC, abstractmethod
from gym.envs.mujoco.mujoco_env import MujocoEnv
from gym.utils import EzPickle
from mujoco_py import MjSimState
import numpy as np
@ -14,6 +15,15 @@ class AgentModel(ABC, MujocoEnv, EzPickle):
MujocoEnv.__init__(self, file_path, frame_skip)
EzPickle.__init__(self)
def set_state_without_forward(self, qpos, qvel):
assert qpos.shape == (self.model.nq,) and qvel.shape == (self.model.nv,)
old_state = self.sim.get_state()
new_state = MjSimState(
old_state.time, qpos, qvel, old_state.act, old_state.udd_state
)
self.sim.set_state(new_state)
self.sim.forward()
@abstractmethod
def _get_obs(self) -> np.ndarray:
"""Returns the observation from the model.

4
mujoco_maze/ant.py
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@ -137,7 +137,7 @@ class AntEnv(AgentModel):
qpos[1] = xy[1]
qvel = self.sim.data.qvel
self.set_state(qpos, qvel)
self.set_state_without_forwarding(qpos, qvel)
def get_xy(self):
return self.sim.data.qpos[:2]
return np.copy(self.sim.data.qpos[:2])

4
mujoco_maze/assets/point.xml
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@ -16,8 +16,8 @@
<light directional="true" cutoff="100" exponent="1" diffuse="1 1 1" specular=".1 .1 .1" pos="0 0 1.3" dir="-0 0 -1.3" />
<geom name="floor" material="MatPlane" pos="0 0 0" size="40 40 40" type="plane" conaffinity="1" rgba="0.8 0.9 0.8 1" condim="3" />
<body name="torso" pos="0 0 0">
<geom name="pointbody" type="sphere" size="0.5" pos="0 0 0.5" solimp="0.9995 0.9999 0.001" />
<geom name="pointarrow" type="box" size="0.5 0.1 0.1" pos="0.6 0 0.5" solimp="0.9995 0.9999 0.001" />
<geom name="pointbody" type="sphere" size="0.5" pos="0 0 0.5" solimp="0.9 0.99 0.001" />
<geom name="pointarrow" type="box" size="0.5 0.1 0.1" pos="0.6 0 0.5" solimp="0.9 0.99 0.001" />
<joint name="ballx" type="slide" axis="1 0 0" pos="0 0 0" />
<joint name="bally" type="slide" axis="0 1 0" pos="0 0 0" />
<joint name="rot" type="hinge" axis="0 0 1" pos="0 0 0" limited="false" />

9
mujoco_maze/maze_env.py
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@ -70,6 +70,7 @@ class MazeEnv(gym.Env):
self._observe_blocks = observe_blocks
self._put_spin_near_agent = put_spin_near_agent
self._top_down_view = top_down_view
self._collision_coef = 0.1
self._maze_structure = structure = maze_env_utils.construct_maze(
maze_id=self._maze_id
@ -164,7 +165,11 @@ class MazeEnv(gym.Env):
spinning = maze_env_utils.can_spin(struct)
shrink = 0.1 if spinning else 0.99 if falling else 1.0
height_shrink = 0.1 if spinning else 1.0
x = j * size_scaling - torso_x + 0.25 * size_scaling if spinning else 0.0
x = (
j * size_scaling - torso_x + 0.25 * size_scaling
if spinning
else 0.0
)
y = i * size_scaling - torso_y
h = height / 2 * size_scaling * height_shrink
size = 0.5 * size_scaling * shrink + self.SIZE_EPS
@ -530,7 +535,7 @@ class MazeEnv(gym.Env):
old_pos = self.wrapped_env.get_xy()
inner_next_obs, inner_reward, _, info = self.wrapped_env.step(action)
new_pos = self.wrapped_env.get_xy()
if self._collision.is_in(old_pos, new_pos):
if self._collision.is_in(new_pos):
self.wrapped_env.set_xy(old_pos)
else:
inner_next_obs, inner_reward, _, info = self.wrapped_env.step(action)

12
mujoco_maze/maze_env_utils.py
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@ -104,7 +104,7 @@ class Collision:
"""
ARROUND = np.array([[-1, 0], [1, 0], [0, -1], [0, 1]])
OFFSET = {False: 0.5, True: 0.55}
OFFSET = {False: 0.48, True: 0.51}
def __init__(
self, structure: list, size_scaling: float, torso_x: float, torso_y: float,
@ -134,11 +134,11 @@ class Collision:
max_x = x_base + size_scaling * offset(pos, 3)
self.objects.append((min_y, max_y, min_x, max_x))
def is_in(self, old_pos, new_pos) -> bool:
for x, y in (new_pos, (old_pos + new_pos) / 2):
for min_y, max_y, min_x, max_x in self.objects:
if min_x <= x <= max_x and min_y <= y <= max_y:
return True
def is_in(self, new_pos) -> bool:
x, y = new_pos
for min_y, max_y, min_x, max_x in self.objects:
if min_x <= x <= max_x and min_y <= y <= max_y:
return True
return False

4
mujoco_maze/point.py
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@ -78,7 +78,7 @@ class PointEnv(AgentModel):
return self._get_obs()
def get_xy(self):
return self.sim.data.qpos[:2]
return np.copy(self.sim.data.qpos[:2])
def set_xy(self, xy):
qpos = np.copy(self.sim.data.qpos)
@ -86,7 +86,7 @@ class PointEnv(AgentModel):
qpos[1] = xy[1]
qvel = self.sim.data.qvel
self.set_state(qpos, qvel)
self.set_state_without_forward(qpos, qvel)
def get_ori(self):
return self.sim.data.qpos[self.ORI_IND]