1 files changed, 8 insertions, 8 deletions

diff --git a/src/ch/epfl/maze/physical/Maze.java b/src/ch/epfl/maze/physical/Maze.java
index d3ba645..d3273c8 100644
--- a/src/ch/epfl/maze/physical/Maze.java
+++ b/src/ch/epfl/maze/physical/Maze.java
@@ -1,7 +1,7 @@
 package ch.epfl.maze.physical;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.util.HashSet;
+import java.util.Set;
 
 /**
  * Maze in which an animal starts from a starting point and must find the exit.
@@ -13,8 +13,8 @@ import java.util.List;
  */
 public final class Maze extends World {
 
-    private final List<Animal> animals;
-    private final List<Animal> animalHistory;
+    private final Set<Animal> animals;
+    private final Set<Animal> animalHistory;
 
     /**
      * Constructs a Maze with a labyrinth structure.
@@ -24,8 +24,8 @@ public final class Maze extends World {
     public Maze(int[][] labyrinth) {
         super(labyrinth);
 
-        this.animals = new ArrayList<>();
-        this.animalHistory = new ArrayList<>();
+        this.animals = new HashSet<>();
+        this.animalHistory = new HashSet<>();
     }
 
     @Override
@@ -34,8 +34,8 @@ public final class Maze extends World {
     }
 
     @Override
-    public List<Animal> getAnimals() {
-        return this.animals;
+    public Set<Animal> getAnimalSet() {
+        return new HashSet<>(this.animals);
     }
 
     /**