From 76eba89ebb2da6d19ac37dba5741a717edd8dd8e Mon Sep 17 00:00:00 2001
From: Pacien TRAN-GIRARD
Date: Sun, 22 Nov 2015 16:02:57 +0100
Subject: Generalise and expose choices exclusion methods

---
 src/ch/epfl/maze/physical/ProbabilisticAnimal.java | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/src/ch/epfl/maze/physical/ProbabilisticAnimal.java b/src/ch/epfl/maze/physical/ProbabilisticAnimal.java
index c4d4f2a..6267500 100644
--- a/src/ch/epfl/maze/physical/ProbabilisticAnimal.java
+++ b/src/ch/epfl/maze/physical/ProbabilisticAnimal.java
@@ -16,7 +16,7 @@ import java.util.stream.Collectors;
 abstract public class ProbabilisticAnimal extends Animal {
 
     private final Random randomSource;
-    private Direction currentDirection;
+    protected Direction currentDirection;
 
     /**
      * Constructs a probabilistic animal with a starting position
@@ -30,19 +30,30 @@ abstract public class ProbabilisticAnimal extends Animal {
     }
 
     /**
-     * Excludes the origin direction for choices.
+     * Excludes the given direction from possible choices.
      *
-     * @param choices An array of choices
+     * @param choices   An array of choices
+     * @param toExclude The Direction to exclude
      * @return An array of smart choices
      */
-    protected Direction[] excludeOrigin(Direction[] choices) {
+    protected Direction[] excludeDirection(Direction[] choices, Direction toExclude) {
         return (new ArrayList<>(Arrays.asList(choices)))
                 .stream()
-                .filter(dir -> !dir.isOpposite(this.currentDirection))
+                .filter(dir -> dir != toExclude)
                 .collect(Collectors.toList())
                 .toArray(new Direction[0]);
     }
 
+    /**
+     * Excludes the origin direction from possible choices.
+     *
+     * @param choices An array of choices
+     * @return An array of smart choices
+     */
+    protected Direction[] excludeOrigin(Direction[] choices) {
+        return this.excludeDirection(choices, this.currentDirection.reverse());
+    }
+
     /**
      * Returns a random Direction from the given choices.
      *
-- 
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