get backstabbing team

Author: hannah-y-gao

engine/src/main/battlecode/common/RobotController.java

@@ -53,6 +53,15 @@ public interface RobotController {
      */
     boolean isCooperation();
 
+    /**
+     * Returns the backstabbing team, or null if still in cooperation mode. 
+     *
+     * @return the team that performed the backstab, or null if still in cooperation mode.
+     *
+     * @battlecode.doc.costlymethod
+     */
+    Team getBackstabbingTeam();
+
     // *********************************
     // ****** UNIT QUERY METHODS *******
     // *********************************

engine/src/main/battlecode/world/GameWorld.java

@@ -405,6 +405,10 @@ public boolean isCooperation() {
         return this.isCooperation;
     }
 
+    public Team getBackStabbingTeam(){
+        return this.backstabber;
+    }
+
     public int getRoundsSinceBackstab() {
         if (this.isCooperation) {
             return 0;

engine/src/main/battlecode/world/RobotControllerImpl.java

@@ -106,6 +106,11 @@ public boolean isCooperation() {
         return this.gameWorld.isCooperation();
     }
 
+    @Override
+    public Team getBackstabbingTeam() {
+        return this.gameWorld.getBackStabbingTeam();
+    }
+
     // *********************************
     // ****** UNIT QUERY METHODS *******
     // *********************************