5 files changed, 23 insertions, 8 deletions

diff --git a/src/ch/epfl/maze/physical/Animal.java b/src/ch/epfl/maze/physical/Animal.java
index 04c4baf..e15cb74 100644
--- a/src/ch/epfl/maze/physical/Animal.java
+++ b/src/ch/epfl/maze/physical/Animal.java
@@ -47,8 +47,11 @@ abstract public class Animal {
      *                {@link ch.epfl.maze.physical.World#getChoices(Vector2D)
      *                World.getChoices(Vector2D)})
      * @return The next direction of the animal, chosen in {@code choices}
+     * @implNote Not abstract for compatibility purpose (in order not to break tests)
      */
-    abstract public Direction move(Set<Direction> choices);
+    public Direction move(Set<Direction> choices) {
+        return null;
+    }
 
     /**
      * Retrieves the next direction of the animal, by selecting one choice among
@@ -58,8 +61,10 @@ abstract public class Animal {
      *                {@link ch.epfl.maze.physical.World#getChoices(Vector2D)
      *                World.getChoices(Vector2D)})
      * @return The next direction of the animal, chosen in {@code choices}
+     * @apiNote Not final for compatibility purpose (in order not to break tests)
+     * @deprecated Use @code{Direction move(Set<Direction> choices)} instead
      */
-    public final Direction move(Direction[] choices) {
+    public Direction move(Direction[] choices) {
         return this.move(EnumSet.copyOf(Arrays.asList(choices)));
     }
 
diff --git a/src/ch/epfl/maze/physical/Predator.java b/src/ch/epfl/maze/physical/Predator.java
index 5f0a3bb..ad5900e 100644
--- a/src/ch/epfl/maze/physical/Predator.java
+++ b/src/ch/epfl/maze/physical/Predator.java
@@ -37,8 +37,11 @@ abstract public class Predator extends ProbabilisticAnimal {
      *                 World.getChoices(Vector2D)})
      * @param daedalus The world in which the animal moves
      * @return The next direction of the animal, chosen in {@code choices}
+     * @implNote Not abstract for compatibility purpose (in order not to break tests)
      */
-    abstract public Direction move(Set<Direction> choices, Daedalus daedalus);
+    public Direction move(Set<Direction> choices, Daedalus daedalus) {
+        return null;
+    }
 
     /**
      * Retrieves the next direction of the animal, by selecting one choice among
@@ -53,8 +56,10 @@ abstract public class Predator extends ProbabilisticAnimal {
      *                 World.getChoices(Vector2D)})
      * @param daedalus The world in which the animal moves
      * @return The next direction of the animal, chosen in {@code choices}
+     * @apiNote Not final for compatibility purpose (in order not to break tests)
+     * @deprecated Use @code{Direction move(Set<Direction> choices, Daedalus daedalus)} instead
      */
-    public final Direction move(Direction[] choices, Daedalus daedalus) {
+    public Direction move(Direction[] choices, Daedalus daedalus) {
         return this.move(EnumSet.copyOf(Arrays.asList(choices)), daedalus);
     }
 
diff --git a/src/ch/epfl/maze/physical/Prey.java b/src/ch/epfl/maze/physical/Prey.java
index 3654807..ff760c5 100644
--- a/src/ch/epfl/maze/physical/Prey.java
+++ b/src/ch/epfl/maze/physical/Prey.java
@@ -37,8 +37,11 @@ abstract public class Prey extends ProbabilisticAnimal {
      *                 World.getChoices(Vector2D)})
      * @param daedalus The world in which the animal moves
      * @return The next direction of the animal, chosen in {@code choices}
+     * @implNote Not abstract for compatibility purpose (in order not to break tests)
      */
-    abstract public Direction move(Set<Direction> choices, Daedalus daedalus);
+    public Direction move(Set<Direction> choices, Daedalus daedalus) {
+        return null;
+    }
 
     /**
      * Retrieves the next direction of the animal, by selecting one choice among
@@ -53,8 +56,10 @@ abstract public class Prey extends ProbabilisticAnimal {
      *                 World.getChoices(Vector2D)})
      * @param daedalus The world in which the animal moves
      * @return The next direction of the animal, chosen in {@code choices}
+     * @apiNote Not final for compatibility purpose (in order not to break tests)
+     * @deprecated Use @code{Direction move(Set<Direction> choices, Daedalus daedalus)} instead
      */
-    public final Direction move(Direction[] choices, Daedalus daedalus) {
+    public Direction move(Direction[] choices, Daedalus daedalus) {
         return this.move(EnumSet.copyOf(Arrays.asList(choices)), daedalus);
     }
 
diff --git a/src/ch/epfl/maze/tests/AnimalTest.java b/src/ch/epfl/maze/tests/AnimalTest.java
index 0b02442..1fd8943 100644
--- a/src/ch/epfl/maze/tests/AnimalTest.java
+++ b/src/ch/epfl/maze/tests/AnimalTest.java
@@ -79,7 +79,7 @@ public class AnimalTest extends TestCase {
         }
 
         @Override
-        public Direction move(Set<Direction> choices) {
+        public Direction move(Direction[] choices) {
             return null;
         }
 
diff --git a/src/ch/epfl/maze/tests/GhostsTest.java b/src/ch/epfl/maze/tests/GhostsTest.java
index c6970b1..35dddbf 100644
--- a/src/ch/epfl/maze/tests/GhostsTest.java
+++ b/src/ch/epfl/maze/tests/GhostsTest.java
@@ -128,7 +128,7 @@ public class GhostsTest extends TestCase {
         }
 
         @Override
-        public Direction move(Set<Direction> choices, Daedalus daedalus) {
+        public Direction move(Direction[] choices, Daedalus daedalus) {
             if (mMoves) {
                 return getPosition().getX() % 2 == 0 ? Direction.RIGHT : Direction.LEFT;
             }