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66 lines
2.4 KiB
66 lines
2.4 KiB
from __future__ import annotations
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from minigrid.core.grid import Grid
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from minigrid.core.mission import MissionSpace
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from minigrid.core.world_object import Goal, Lava, SlipperyNorth, SlipperyEast, SlipperySouth, SlipperyWest, Ball
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from minigrid.envs.adversaries_base import AdversaryEnv
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from minigrid.core.tasks import GoTo, DoNothing, PickUpObject, PlaceObject
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import numpy as np
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class AdversarySimple(AdversaryEnv):
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"""
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## Description
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## Registered Configurations
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- `MiniGrid-Adv-8x8-v0`
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- `MiniGrid-AdvLava-8x8-v0`
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- `MiniGrid-AdvSlipperyLava-8x8-v0`
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- `MiniGrid-AdvSimple-8x8-v0`
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"""
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def __init__(self, width=7, height=6, generate_wall=True, generate_lava=False, generate_slippery=False ,max_steps: int | None = None, **kwargs):
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if max_steps is None:
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max_steps = 200
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self.generate_wall = generate_wall
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super().__init__(
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width=width, height=height, max_steps=max_steps, **kwargs
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)
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def _gen_grid(self, width, height):
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self.grid = Grid(width, height)
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self.grid.wall_rect(0, 0, width, height)
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goal_pos = np.array((width - 2, height - 2))
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ball_pos = np.array((width - 3, height - 2))
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self.put_obj(Goal(), *goal_pos)
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self.put_obj(Ball("yellow"), *ball_pos)
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ball = self.grid.get(*ball_pos)
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self.adversaries = {}
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self.agent_pos = np.array((width - 2, 1))
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self.agent_dir = 2
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self.grid.horz_wall(2, height - 3)
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blue_adv = self.add_adversary(1, 1, "yellow", direction=1, tasks=[GoTo((width - 4, height - 2)),
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PickUpObject(ball_pos, ball),
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GoTo((1,1)),
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PlaceObject((2, 1), ball),
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DoNothing(duration=2),
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PickUpObject((2, 1), ball),
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GoTo((width - 4, height - 2)),
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PlaceObject(ball_pos, ball)], repeating=True)
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def step(self, action):
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obs, reward, terminated, truncated, info = super().step(action)
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return obs, reward, terminated, truncated, info
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