radu
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Gym-MiniGrid
同期ミラー https://github.com/maximecb/gym-minigrid.git


			
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  <p class="caption" role="heading"><span class="caption-text">Introduction</span></p>
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<p class="caption" role="heading"><span class="caption-text">Environments</span></p>
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<li class="toctree-l2"><a class="reference internal" href="../BlockedUnlockPickupEnv/">Blocked Unlock Pickup</a></li>
<li class="toctree-l2"><a class="reference internal" href="../CrossingEnv/">Crossing</a></li>
<li class="toctree-l2 current current-page"><a class="current reference internal" href="#">Dist Shift</a></li>
<li class="toctree-l2"><a class="reference internal" href="../DoorKeyEnv/">Door Key</a></li>
<li class="toctree-l2"><a class="reference internal" href="../DynamicObstaclesEnv/">Dynamic Obstacles</a></li>
<li class="toctree-l2"><a class="reference internal" href="../EmptyEnv/">Empty</a></li>
<li class="toctree-l2"><a class="reference internal" href="../FetchEnv/">Fetch</a></li>
<li class="toctree-l2"><a class="reference internal" href="../FourRoomsEnv/">Four Rooms</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../GoToObjectEnv/">Go To Object</a></li>
<li class="toctree-l2"><a class="reference internal" href="../KeyCorridorEnv/">Key Corridor</a></li>
<li class="toctree-l2"><a class="reference internal" href="../LavaGapEnv/">Lava Gap</a></li>
<li class="toctree-l2"><a class="reference internal" href="../LockedRoomEnv/">Locked Room</a></li>
<li class="toctree-l2"><a class="reference internal" href="../MemoryEnv/">Memory</a></li>
<li class="toctree-l2"><a class="reference internal" href="../MultiRoomEnv/">Multi Room</a></li>
<li class="toctree-l2"><a class="reference internal" href="../ObstructedMaze_1Dlhb/">Obstructed Maze Dlhb</a></li>
<li class="toctree-l2"><a class="reference internal" href="../ObstructedMaze_Full/">Obstructed Maze Full</a></li>
<li class="toctree-l2"><a class="reference internal" href="../PlaygroundEnv/">Playground</a></li>
<li class="toctree-l2"><a class="reference internal" href="../PutNearEnv/">Put Near</a></li>
<li class="toctree-l2"><a class="reference internal" href="../RedBlueDoorEnv/">Red Blue Door</a></li>
<li class="toctree-l2"><a class="reference internal" href="../UnlockEnv/">Unlock</a></li>
<li class="toctree-l2"><a class="reference internal" href="../UnlockPickupEnv/">Unlock Pickup</a></li>
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          <section id="dist-shift">
<h1>Dist Shift<a class="headerlink" href="#dist-shift" title="Permalink to this heading">#</a></h1>
<figure class="align-default">
<a class="reference internal image-reference" href="../../../_images/DistShiftEnv.gif"><img alt="Dist Shift" src="../../../_images/DistShiftEnv.gif" style="width: 200px;" /></a>
</figure>
<section id="description">
<h2>Description<a class="headerlink" href="#description" title="Permalink to this heading">#</a></h2>
<p>This environment is based on one of the DeepMind <a class="reference external" href="https://github.com/deepmind/ai-safety-gridworlds">AI safety gridworlds</a>.
The agent starts in the
top-left corner and must reach the goal which is in the top-right corner,
but has to avoid stepping into lava on its way. The aim of this environment
is to test an agent’s ability to generalize. There are two slightly
different variants of the environment, so that the agent can be trained on
one variant and tested on the other.</p>
</section>
<section id="mission-space">
<h2>Mission Space<a class="headerlink" href="#mission-space" title="Permalink to this heading">#</a></h2>
<p>“get to the green goal square”</p>
</section>
<section id="action-space">
<h2>Action Space<a class="headerlink" href="#action-space" title="Permalink to this heading">#</a></h2>
<div class="table-wrapper colwidths-auto docutils container">
<table class="docutils align-default">
<thead>
<tr class="row-odd"><th class="head"><p>Num</p></th>
<th class="head"><p>Name</p></th>
<th class="head"><p>Action</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p>0</p></td>
<td><p>left</p></td>
<td><p>Turn left</p></td>
</tr>
<tr class="row-odd"><td><p>1</p></td>
<td><p>right</p></td>
<td><p>Turn right</p></td>
</tr>
<tr class="row-even"><td><p>2</p></td>
<td><p>forward</p></td>
<td><p>Move forward</p></td>
</tr>
<tr class="row-odd"><td><p>3</p></td>
<td><p>pickup</p></td>
<td><p>Unused</p></td>
</tr>
<tr class="row-even"><td><p>4</p></td>
<td><p>drop</p></td>
<td><p>Unused</p></td>
</tr>
<tr class="row-odd"><td><p>5</p></td>
<td><p>toggle</p></td>
<td><p>Unused</p></td>
</tr>
<tr class="row-even"><td><p>6</p></td>
<td><p>done</p></td>
<td><p>Unused</p></td>
</tr>
</tbody>
</table>
</div>
</section>
<section id="observation-encoding">
<h2>Observation Encoding<a class="headerlink" href="#observation-encoding" title="Permalink to this heading">#</a></h2>
<ul class="simple">
<li><p>Each tile is encoded as a 3 dimensional tuple:
<code class="docutils literal notranslate"><span class="pre">(OBJECT_IDX,</span> <span class="pre">COLOR_IDX,</span> <span class="pre">STATE)</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">OBJECT_TO_IDX</span></code> and <code class="docutils literal notranslate"><span class="pre">COLOR_TO_IDX</span></code> mapping can be found in
<span class="xref myst">minigrid/minigrid.py</span></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">STATE</span></code> refers to the door state with 0=open, 1=closed and 2=locked</p></li>
</ul>
</section>
<section id="rewards">
<h2>Rewards<a class="headerlink" href="#rewards" title="Permalink to this heading">#</a></h2>
<p>A reward of ‘1’ is given for success, and ‘0’ for failure.</p>
</section>
<section id="termination">
<h2>Termination<a class="headerlink" href="#termination" title="Permalink to this heading">#</a></h2>
<p>The episode ends if any one of the following conditions is met:</p>
<ol class="arabic simple">
<li><p>The agent reaches the goal.</p></li>
<li><p>The agent falls into lava.</p></li>
<li><p>Timeout (see <code class="docutils literal notranslate"><span class="pre">max_steps</span></code>).</p></li>
</ol>
</section>
<section id="registered-configurations">
<h2>Registered Configurations<a class="headerlink" href="#registered-configurations" title="Permalink to this heading">#</a></h2>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">MiniGrid-DistShift1-v0</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">MiniGrid-DistShift2-v0</span></code></p></li>
</ul>
</section>
</section>

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            <ul>
<li><a class="reference internal" href="#">Dist Shift</a><ul>
<li><a class="reference internal" href="#description">Description</a></li>
<li><a class="reference internal" href="#mission-space">Mission Space</a></li>
<li><a class="reference internal" href="#action-space">Action Space</a></li>
<li><a class="reference internal" href="#observation-encoding">Observation Encoding</a></li>
<li><a class="reference internal" href="#rewards">Rewards</a></li>
<li><a class="reference internal" href="#termination">Termination</a></li>
<li><a class="reference internal" href="#registered-configurations">Registered Configurations</a></li>
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