1  package pep;
 2  
 3  import hlt.*;
 4  import java.util.Collection;
 5  import java.util.HashMap;
 6  import java.util.Map;
 7  
 8  public class CommandManager {
 9      private static HashMap<EntityId, Command> commands = new HashMap<>();
10      private static Player me;
11      private static Game game;
12      private static GameMap gameMap;
13  
14      public static void updateCommands(Game game){
15          commands = new HashMap<>();
16          CommandManager.me = game.me;
17          CommandManager.game = game;
18          CommandManager.gameMap = game.gameMap;
19  
20          addMoves(getTargets());
21          addSpawns();
22      }
23  
24      private static void addSpawns(){
25          if (me.ships.size() == 0){
26              commands.put(me.shipyard.id, Command.spawnShip());
27              me.halite -= Constants.SHIP_COST;
28              gameMap.at(me.shipyard).markUnsafe(new Ship(me.id, EntityId.NONE, me.shipyard.position, 0));
29          }
30      }
31  
32      /**
33       * @return A map specifying the target position of each ship
34       */
35      private static Map<EntityId, Position> getTargets() {
36          Map<EntityId, Position> targets = new HashMap<>();
37          for (final Ship ship : me.ships.values()) {
38              if (!commands.containsKey(ship.id)){
39                  Behavior behavior = BehaviorManager.behaviorForShip(ship);
40                  targets.put(ship.id, behavior.getTarget(ship, game));
41              }
42          }
43          return targets;
44      }
45  
46      /**
47       * Adds moves to the command queue based on target positions
48       */
49      private static void addMoves(Map<EntityId, Position> targets){
50          // add moves for ships
51          for (Map.Entry<EntityId, Position> entry : targets.entrySet()){
52              Ship ship = me.ships.get(entry.getKey());
53              Position target = entry.getValue();
54              if (ship.position.equals(target) || !gameMap.canMove(ship)){
55                  commands.put(ship.id, ship.stayStill());
56              } else {
57                  Behavior behavior = BehaviorManager.behaviorForShip(ship);
58                  Direction dir = gameMap.naiveNavigate(ship, target, behavior.minimizesCost());
59                  commands.put(ship.id, ship.move(dir));
60                  gameMap.at(ship.position).markSafe();
61              }
62          }
63      }
64  
65      public static void logCommands(){
66          for (Command cmd : commands.values()) {
67              Log.log(cmd.command);
68          }
69      }
70  
71      public static Collection<Command> getCommands(){
72          return commands.values();
73      }
74  }