add balance changes

Author: compiler64

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

@@ -61,6 +61,9 @@ public class GameConstants {
     /** The amount of cheese each team starts with. */
     public static final int INITIAL_TEAM_CHEESE = 2500;
 
+    /** The number of rounds after a backstab after which cat traps are disabled. */
+    public static final int CAT_TRAP_ROUNDS_AFTER_BACKSTAB = 100;
+
     /** The maximum number of rat kings that a team can have. */
     public static final int MAX_NUMBER_OF_RAT_KINGS = 5;
 
@@ -219,7 +222,7 @@ public class GameConstants {
     public static final int DIG_DIRT_CHEESE_COST = 5;
 
     /** The cheese cost to place a tile of dirt */
-    public static final int PLACE_DIRT_CHEESE_COST = 3;
+    public static final int PLACE_DIRT_CHEESE_COST = 0;
 
 
     // *********************************

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

@@ -3,7 +3,7 @@
 public enum UnitType {
     // health, size, visionConeRadiusSquared, visionConeAngle, actionCooldown, movementCooldown, bytecodeLimit
     BABY_RAT(100, 1, 20, 90, 10, 10, 17500),
-    RAT_KING(500, 3, 25, 360, 10, 40, 20000),
+    RAT_KING(600, 3, 25, 360, 10, 40, 20000),
     CAT(4000, 2, 17, 180, 30, 20, 17500);
 
     // amount of health robot initially starts with

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

@@ -23,7 +23,9 @@ public class GameWorld {
      * Whether we're running.
      */
     protected boolean running = true;
-    protected boolean isCooperation = true;
+    private boolean isCooperation = true;
+    private int backstabRound = -1;
+    private Team backstabber = null;
 
     protected final IDGenerator idGenerator;
     protected final GameStats gameStats;
@@ -401,6 +403,25 @@ public boolean isCooperation() {
         return this.isCooperation;
     }
 
+    public int getRoundsSinceBackstab() {
+        if (this.isCooperation) {
+            return 0;
+        } else {
+            return this.currentRound - this.backstabRound;
+        }
+    }
+
+    public boolean catTrapsAllowed(Team team) {
+        return this.isCooperation || (this.getRoundsSinceBackstab() <=
+            GameConstants.CAT_TRAP_ROUNDS_AFTER_BACKSTAB && this.backstabber != team);
+    }
+
+    public void backstab(Team backstabber) {
+        this.isCooperation = false;
+        this.backstabRound = this.currentRound;
+        this.backstabber = backstabber;
+    }
+
     public boolean getWall(MapLocation loc) {
         return this.walls[locationToIndex(loc)];
     }
@@ -601,13 +622,14 @@ public void triggerTrap(Trap trap, InternalRobot robot) {
         TrapType type = trap.getType();
 
         robot.setMovementCooldownTurns(type.stunTime);
+
         if (type == TrapType.CAT_TRAP && robot.getType().isCatType()) {
             this.teamInfo.addDamageToCats(trap.getTeam(), Math.min(type.damage, robot.getHealth()));
         }
 
         if (trap.getType() != TrapType.CAT_TRAP) {
             // initiate backstab
-            this.isCooperation = false;
+            backstab(robot.getTeam().opponent());
         }
 
         matchMaker.addTrapTriggerAction(trap.getId(), loc, triggeringTeam, type);
@@ -807,7 +829,7 @@ public boolean setWinnerIfKilledAllRatKings() {
      * @return whether all cats dead
      */
     public boolean setWinnerifAllCatsDead() {
-        if (this.getNumCats() == 0 && this.isCooperation) { // only end game if no more cats in cooperation mode
+        if (this.getNumCats() == 0 && this.isCooperation()) { // only end game if no more cats in cooperation mode
             // find out which team won via points
             if (setWinnerIfMorePoints())
                 return true;
@@ -1134,7 +1156,7 @@ public void destroyRobot(int id, boolean fromException, boolean fromDamage) {
         // check win
         if (robot.getType() == UnitType.RAT_KING && this.getTeamInfo().getNumRatKings(robot.getTeam()) == 0) {
             checkWin(robotTeam);
-        } else if (this.isCooperation && robot.getType() == UnitType.CAT && this.getNumCats() == 0) {
+        } else if (this.isCooperation() && robot.getType() == UnitType.CAT && this.getNumCats() == 0) {
             checkWin(robotTeam);
         }
     }

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

@@ -621,7 +621,7 @@ public void bite(MapLocation loc, int cheeseConsumed) {
                 targetRobot.addHealth(-damage);
 
                 if (targetRobot.getType() != UnitType.CAT) {
-                    this.gameWorld.isCooperation = false;
+                    this.gameWorld.backstab(this.team);
                 }
             }
         }
@@ -646,7 +646,7 @@ public void grabRobot(MapLocation loc) {
         this.gameWorld.getMatchMaker().addRatNapAction(this.robotBeingCarried.getID());
 
         if (this.robotBeingCarried.getTeam() != this.getTeam()) {
-            this.gameWorld.isCooperation = false;
+            this.gameWorld.backstab(this.getTeam());
         }
     }
 
@@ -702,13 +702,13 @@ private void getGrabbed(InternalRobot grabber) {
     public void throwRobot() {
         this.gameWorld.getMatchMaker().endTurn(this.ID, this.health, this.cheeseAmount, this.movementCooldownTurns,
                 this.actionCooldownTurns, this.turningCooldownTurns, this.bytecodesUsed, this.location, this.dir,
-                this.gameWorld.isCooperation);
+                this.gameWorld.isCooperation());
         this.robotBeingCarried.getThrown(this.dir);
         this.gameWorld.getMatchMaker().endTurn(this.robotBeingCarried.ID, this.robotBeingCarried.health,
                 this.robotBeingCarried.cheeseAmount, this.robotBeingCarried.movementCooldownTurns,
                 this.robotBeingCarried.actionCooldownTurns, this.robotBeingCarried.turningCooldownTurns,
                 this.robotBeingCarried.bytecodesUsed, this.robotBeingCarried.location, this.robotBeingCarried.dir,
-                this.gameWorld.isCooperation);
+                this.gameWorld.isCooperation());
         this.gameWorld.addHasTraveledRobot(this.robotBeingCarried.getID());
         this.gameWorld.getMatchMaker().addThrowAction(this.robotBeingCarried.getID(),
                 this.getLocation().add(this.dir));
@@ -1401,13 +1401,13 @@ public void processEndOfTurn() {
 
         this.gameWorld.getMatchMaker().endTurn(this.ID, this.health, this.cheeseAmount, this.movementCooldownTurns,
                 this.actionCooldownTurns, this.turningCooldownTurns, this.bytecodesUsed, this.location, this.dir,
-                this.gameWorld.isCooperation);
+                this.gameWorld.isCooperation());
         if (this.isCarryingRobot() && this.robotBeingCarried.getHealth() > 0)
             this.gameWorld.getMatchMaker().endTurn(this.robotBeingCarried.ID, this.robotBeingCarried.health,
                     this.robotBeingCarried.cheeseAmount, this.robotBeingCarried.movementCooldownTurns,
                     this.robotBeingCarried.actionCooldownTurns, this.robotBeingCarried.turningCooldownTurns,
                     this.robotBeingCarried.bytecodesUsed, this.location, this.robotBeingCarried.dir,
-                    this.gameWorld.isCooperation);
+                    this.gameWorld.isCooperation());
         this.roundsAlive++;
     }
 

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

@@ -103,7 +103,7 @@ public int getMapHeight() {
 
     @Override
     public boolean isCooperation() {
-        return this.gameWorld.isCooperation;
+        return this.gameWorld.isCooperation();
     }
 
     // *********************************
@@ -329,8 +329,8 @@ private void assertCanPlaceTrap(MapLocation loc, TrapType trapType) throws GameA
                 ? GameConstants.RAT_KING_BUILD_DISTANCE_SQUARED
                 : GameConstants.BUILD_DISTANCE_SQUARED);
 
-        if (trapType == TrapType.CAT_TRAP && !this.gameWorld.isCooperation)
-            throw new GameActionException(CANT_DO_THAT, "Can't place new cat traps in backstabbing mode!");
+        if (trapType == TrapType.CAT_TRAP && !this.gameWorld.catTrapsAllowed(this.getTeam()))
+            throw new GameActionException(CANT_DO_THAT, "Can't place new cat traps in backstabbing mode after " + GameConstants.CAT_TRAP_ROUNDS_AFTER_BACKSTAB + " rounds!");
         if (!this.gameWorld.isPassable(loc))
             throw new GameActionException(CANT_DO_THAT, "Can't place trap on a wall or dirt!");
         if (this.gameWorld.getRobot(loc) != null)
@@ -1203,11 +1203,14 @@ public boolean canBecomeRatKing() {
     public void becomeRatKing() throws GameActionException {
         assertCanBecomeRatKing();
         int health = 0;
+
         for (Direction d : Direction.allDirections()) {
             InternalRobot currentRobot = this.gameWorld.getRobot(this.adjacentLocation(d));
+
             if (currentRobot != null && robot.getTeam() == currentRobot.getTeam()) {
                 health += currentRobot.getHealth();
             }
+
             if (currentRobot != null && d != Direction.CENTER) {
                 // all their raw cheese is taken
                 this.gameWorld.getTeamInfo().addCheese(this.getTeam(), currentRobot.getCheese());