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Update README.md

Maxime Chevalier-Boisvert 5 years ago
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README.md

@@ -393,6 +393,22 @@ The agent has to pick up a box which is placed in a corner of a 3x3 maze.
 The doors are locked, the keys are hidden in boxes and doors are obstructed
 The doors are locked, the keys are hidden in boxes and doors are obstructed
 by balls. This environment can be solved without relying on language.
 by balls. This environment can be solved without relying on language.
 
 
+## Lava gap environment
+
+Registered configurations:
+- `MiniGrid-LavaGapS5-v0`
+- `MiniGrid-LavaGapS6-v0`
+- `MiniGrid-LavaGapS7-v0`
+
+<p align="center">
+  <img src="figures/LavaGapS6.png" width="200">
+</p>
+
+The agent has to reach the green goal square at the opposite corner of the room,
+and must pass through a narrow gap in a vertical strip of deadly lava. Touching
+the lava terminate the episode with a zero reward. This environment is useful
+for studying safety and safe exploration.
+
 ## Lava crossing environment
 ## Lava crossing environment
 
 
 Registered configurations:
 Registered configurations: