1 files changed, 22 insertions, 0 deletions

diff --git a/src/ch/epfl/maze/physical/stragegies/reducer/BackwardReducer.java b/src/ch/epfl/maze/physical/stragegies/reducer/BackwardReducer.java
new file mode 100644
index 0000000..4ef2ff8
--- /dev/null
+++ b/src/ch/epfl/maze/physical/stragegies/reducer/BackwardReducer.java
@@ -0,0 +1,22 @@
+package ch.epfl.maze.physical.stragegies.reducer;
+
+import ch.epfl.maze.util.Direction;
+
+import java.util.Set;
+
+/**
+ * A filter removing the possibility to go backward.
+ *
+ * @author Pacien TRAN-GIRARD
+ */
+public interface BackwardReducer extends BlindChoiceReducer {
+
+    Direction getDirection();
+
+    @Override
+    default Set<Direction> reduce(Set<Direction> choices) {
+        choices.remove(this.getDirection().reverse());
+        return choices;
+    }
+
+}