Update game logic to changed requirements and refactor command parsing

game1_output.txt

@@ -107,8 +107,7 @@ Error, need fireplace to build
 OK
 Error, already built
 OK
-OK
+Error, already built
-axe
 axe
 fireplace
 win

game2_output.txt

@@ -56,9 +56,7 @@ shack
 OK
 OK
 OK
-axe
 ballon
-club
 hangglider
 sailingraft
 shack

src/edu/kit/informatik/Terminal.java

@@ -97,7 +97,15 @@ public final class Terminal {
      */
     public static String readLine() {
         try {
-            return IN.readLine();
+            String line = IN.readLine();
+            while (line != null && line.startsWith("#")) {
+                line = IN.readLine();
+            }
+            if (line == null) {
+                return "quit";
+            } else {
+                return line;
+            }
         } catch (final IOException e) {
             /*
              * The IOException will not occur during tests executed by the praktomat, therefore the

src/edu/kit/informatik/model/Card.java

@@ -47,6 +47,23 @@ public enum Card {
         return this.equals(THUNDERSTORM);
     }
 
+    public int requiredAmount() {
+        switch (this) {
+            case WOOD:
+            case METAL:
+            case PLASTIC:
+                return 16;
+            case SPIDER:
+            case SNAKE:
+            case TIGER:
+                return 5;
+            case THUNDERSTORM:
+                return 1;
+            default:
+                return 0;
+        }
+    }
+
     public static Card parse(String input) {
         switch (input) {
             case "wood":

src/edu/kit/informatik/model/CardGame.java

@@ -1,7 +1,5 @@
 package edu.kit.informatik.model;
 
-import edu.kit.informatik.ui.InvalidInputException;
-
 import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -12,16 +10,7 @@ import java.util.Objects;
 import java.util.Set;
 import java.util.stream.Collectors;
 
-import static edu.kit.informatik.model.Card.METAL;
-import static edu.kit.informatik.model.Card.PLASTIC;
-import static edu.kit.informatik.model.Card.SNAKE;
-import static edu.kit.informatik.model.Card.SPIDER;
-import static edu.kit.informatik.model.Card.THUNDERSTORM;
-import static edu.kit.informatik.model.Card.TIGER;
-import static edu.kit.informatik.model.Card.WOOD;
-import static edu.kit.informatik.model.Item.AXE;
 import static edu.kit.informatik.model.Item.BALLON;
-import static edu.kit.informatik.model.Item.CLUB;
 import static edu.kit.informatik.model.Item.FIREPLACE;
 import static edu.kit.informatik.model.Item.HANG_GLIDER;
 import static edu.kit.informatik.model.Item.SAILING_RAFT;
@@ -31,8 +20,8 @@ import static edu.kit.informatik.model.Item.STEAMBOAT;
 public class CardGame {
     private Deque<Card> cardStack;
     private Deque<Card> currentCardStack;
-    private Deque<Card> resources = new ArrayDeque<>();
+    private final Deque<Card> resources = new ArrayDeque<>();
-    private List<Item> items = new ArrayList<>();
+    private final List<Item> items = new ArrayList<>();
     private boolean fightingAnimal = false;
     private Integer awaitedDiceSize = null;
     private Integer minimumDiceRoll = null;
@@ -44,19 +33,19 @@ public class CardGame {
      * @return whether the game could be successfully started
      */
     public boolean start(Deque<Card> cardStack) throws LogicException {
-        if (cardStack == null || currentCardStack == null) {
+        if (cardStack == null) {
-            if (Collections.frequency(cardStack, WOOD) != 16 || Collections.frequency(cardStack, PLASTIC) != 16
+            throw new LogicException("can not initialize game with null cards");
-                    || Collections.frequency(cardStack, METAL) != 16 || Collections.frequency(cardStack, SPIDER) != 5
+        }
-                    || Collections.frequency(cardStack, SNAKE) != 5 || Collections.frequency(cardStack, TIGER) != 5
+        if (gameStarted()) {
-                    || Collections.frequency(cardStack, THUNDERSTORM) != 1) {
+            return false;
+        }
+        if (!Arrays.stream(Card.values())
+                 .allMatch(card -> Collections.frequency(cardStack, card) == card.requiredAmount())) {
             throw new LogicException("invalid deck: missing or surplus cards");
         }
         this.cardStack = new ArrayDeque<>(cardStack);
         reset();
         return true;
-        } else {
-            return false; // game already started
-        }
     }
 
     public Card draw() throws LogicException {
@@ -94,7 +83,7 @@ public class CardGame {
         final int minimumNeeded = minimumDiceRoll;
         minimumDiceRoll = null;
         if (fightingAnimal) {
-            final int bonus = items.contains(AXE) ? 2 : items.contains(CLUB) ? 1 : 0;
+            final int bonus = items.stream().mapToInt(Item::fightingBonus).max().orElse(0);
             if (roll + bonus >= minimumNeeded) {
                 return "survived";
             } else {
@@ -125,7 +114,7 @@ public class CardGame {
             throw new LogicException("can not build item");
         } else if (item.requiresFireplace() && !items.contains(FIREPLACE)) {
             throw new LogicException("need fireplace to build");
-        } else if (items.contains(item) && !item.canHaveMoreThanOne()) {
+        } else if (items.contains(item)) {
             throw new LogicException("already built");
         } else if (canBuild(item)) {
             // remove used resources
@@ -156,7 +145,7 @@ public class CardGame {
         if (item.requiresFireplace() && !items.contains(FIREPLACE)) {
             return false;
         }
-        if (!item.canHaveMoreThanOne() && items.contains(item)) {
+        if (items.contains(item)) {
             return false;
         }
         final Card[] resourcesNeeded = item.resourcesNeeded();

src/edu/kit/informatik/model/Item.java

@@ -41,8 +41,15 @@ public enum Item {
         return this.equals(STEAMBOAT) || this.equals(BALLON);
     }
 
-    public boolean canHaveMoreThanOne() {
+    public int fightingBonus() {
-        return this.equals(AXE) || this.equals(CLUB);
+        switch (this) {
+            case AXE:
+                return 2;
+            case CLUB:
+                return 1;
+            default:
+                return 0;
+        }
     }
 
     public static Item parse(String input) {

src/edu/kit/informatik/ui/CommandLine.java

@@ -2,6 +2,7 @@ package edu.kit.informatik.ui;
 
 import edu.kit.informatik.model.CardGame;
 import edu.kit.informatik.Terminal;
+import edu.kit.informatik.model.LogicException;
 import edu.kit.informatik.ui.command.Command;
 import edu.kit.informatik.ui.command.CommandFactory;
 
@@ -36,12 +37,6 @@ public final class CommandLine {
 
         while (true) {
             String input = Terminal.readLine();
-            if (input == null) {
-                break; // TODO remove
-            }
-            if (input.startsWith("#")) {
-                continue; // TODO remove
-            }
             if (input.startsWith("startn")) {
                 // TODO remove
                 StringJoiner j = new StringJoiner(",");
@@ -54,15 +49,23 @@ public final class CommandLine {
                     Terminal.printError("input after quit command");
                     continue;
                 } else {
-                    break;
+                    return;
                 }
             }
 
+            final Command command;
+
             try {
-                Command command = CommandFactory.getCommand(input);
+                command = CommandFactory.getCommand(input);
-                command.apply(simulation);
             } catch (NumberFormatException | InvalidInputException e) {
                 Terminal.printError(e.getMessage());
+                continue;
+            }
+
+            try {
+                command.apply(simulation);
+            } catch (LogicException e) {
+                Terminal.printError(e.getMessage());
             }
         }
     }

src/edu/kit/informatik/ui/command/Build.java

@@ -3,6 +3,7 @@ package edu.kit.informatik.ui.command;
 import edu.kit.informatik.Terminal;
 import edu.kit.informatik.model.CardGame;
 import edu.kit.informatik.model.Item;
+import edu.kit.informatik.model.LogicException;
 import edu.kit.informatik.ui.InvalidInputException;
 
 import java.util.regex.Matcher;
@@ -13,14 +14,10 @@ import static edu.kit.informatik.ui.command.CommandFactory.BUILD;
 public final class Build extends Command {
     private static final Pattern BUILD_ARGUMENT = Pattern.compile(BUILD + "(\\w+)");
 
-    private final Item item;
+    private Item item;
-
-    private Build(Item item) {
-        this.item = item;
-    }
 
     @Override
-    public void apply(CardGame game) throws InvalidInputException {
+    public void apply(CardGame game) throws LogicException {
         final String result = game.build(item);
         if (result == null) {
             Terminal.printError("could not build item");
@@ -29,14 +26,8 @@ public final class Build extends Command {
         }
     }
 
-    /**
+    @Override
-     * Parse user input into this command object.
+    public void parse(String input) throws InvalidInputException {
-     *
-     * @param input one line of user input
-     * @return fully initialized command
-     * @throws InvalidInputException if user input is in any way invalid
-     */
-    public static Command parse(String input) throws InvalidInputException {
         if (input == null || !input.startsWith(BUILD)) {
             throw new InvalidInputException("unknown command");
         }
@@ -44,6 +35,6 @@ public final class Build extends Command {
         if (!matcher.matches()) {
             throw new InvalidInputException("invalid build command");
         }
-        return new Build(Item.parse(matcher.group(1)));
+        item = Item.parse(matcher.group(1));
     }
 }

src/edu/kit/informatik/ui/command/Buildable.java

@@ -3,6 +3,7 @@ package edu.kit.informatik.ui.command;
 import edu.kit.informatik.Terminal;
 import edu.kit.informatik.model.CardGame;
 import edu.kit.informatik.model.Item;
+import edu.kit.informatik.model.LogicException;
 import edu.kit.informatik.ui.InvalidInputException;
 
 import java.util.Comparator;
@@ -11,12 +12,8 @@ import java.util.Set;
 import static edu.kit.informatik.ui.command.CommandFactory.BUILDABLE;
 
 public final class Buildable extends Command {
-    private Buildable() {
-        
-    }
-
     @Override
-    public void apply(CardGame game) throws InvalidInputException {
+    public void apply(CardGame game) throws LogicException {
         final Set<Item> buildable = game.getBuildableItems();
         if (buildable.isEmpty()) {
             Terminal.printLine("EMPTY");
@@ -25,20 +22,13 @@ public final class Buildable extends Command {
         }
     }
 
-    /**
+    @Override
-     * Parse user input into this command object.
+    public void parse(String input) throws InvalidInputException {
-     *
-     * @param input one line of user input
-     * @return fully initialized command
-     * @throws InvalidInputException if user input is in any way invalid
-     */
-    public static Command parse(String input) throws InvalidInputException {
         if (input == null || !input.startsWith(BUILDABLE)) {
             throw new InvalidInputException("unknown command");
         }
         if (!input.equals(BUILDABLE)) {
             throw new InvalidInputException("invalid build? argument: none expected");
         }
-        return new Buildable();
     }
 }

src/edu/kit/informatik/ui/command/Command.java

@@ -1,6 +1,7 @@
 package edu.kit.informatik.ui.command;
 
 import edu.kit.informatik.model.CardGame;
+import edu.kit.informatik.model.LogicException;
 import edu.kit.informatik.ui.InvalidInputException;
 
 /**
@@ -14,7 +15,15 @@ public abstract class Command {
     /**
      * Apply this command to a game.
      * @param game game to use
-     * @throws InvalidInputException on invalid user input
+     * @throws LogicException on invalid user input
      */
-    public abstract void apply(CardGame game) throws InvalidInputException;
+    public abstract void apply(CardGame game) throws LogicException;
+
+    /**
+     * Parse user input into this command object.
+     *
+     * @param input one line of user input
+     * @throws InvalidInputException if user input is in any way invalid
+     */
+    public abstract void parse(String input) throws InvalidInputException;
 }

src/edu/kit/informatik/ui/command/CommandFactory.java

@@ -5,6 +5,7 @@ import edu.kit.informatik.ui.InvalidInputException;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.function.Function;
+import java.util.function.Supplier;
 
 /**
  * Factory used to parse user input into commands.
@@ -13,8 +14,6 @@ import java.util.function.Function;
  * @version 1.0
  */
 public final class CommandFactory {
-    public static final String CARD = "wood|metal|plastic|spider|snake|tiger|thunderstorm";
-
     public static final String START = "start";
     public static final String DRAW = "draw";
     public static final String LIST_RESOURCES = "list-resources";
@@ -24,18 +23,18 @@ public final class CommandFactory {
     public static final String ROLL_DICE = "rollD";
     public static final String RESET = "reset";
 
-    private static final Map<String, Function<String, Command>> COMMANDS = new HashMap<>();
+    private static final Map<String, Supplier<Command>> COMMANDS = new HashMap<>();
 
     static {
         // initialize registered commands
-        COMMANDS.put(START, Start::parse);
+        COMMANDS.put(START, Start::new);
-        COMMANDS.put(DRAW, Draw::parse);
+        COMMANDS.put(DRAW, Draw::new);
-        COMMANDS.put(LIST_RESOURCES, ListResources::parse);
+        COMMANDS.put(LIST_RESOURCES, ListResources::new);
-        COMMANDS.put(BUILD, Build::parse);
+        COMMANDS.put(BUILD, Build::new);
-        COMMANDS.put(LIST_BUILDINGS, ListBuildings::parse);
+        COMMANDS.put(LIST_BUILDINGS, ListBuildings::new);
-        COMMANDS.put(BUILDABLE, Buildable::parse);
+        COMMANDS.put(BUILDABLE, Buildable::new);
-        COMMANDS.put(ROLL_DICE, RollDice::parse);
+        COMMANDS.put(ROLL_DICE, RollDice::new);
-        COMMANDS.put(RESET, Reset::parse);
+        COMMANDS.put(RESET, Reset::new);
     }
 
     /**
@@ -52,12 +51,15 @@ public final class CommandFactory {
      * @throws InvalidInputException if user input is invalid
      */
     public static Command getCommand(String input) throws InvalidInputException {
-        Function<String, Command> parser = COMMANDS.entrySet().stream()
+        Supplier<Command> commandSupplier = COMMANDS.entrySet().stream()
                 .filter(entry -> input.startsWith(entry.getKey())).map(Map.Entry::getValue)
                 .findFirst().orElse(null);
-        if (parser != null) {
+        if (commandSupplier != null) {
-            return parser.apply(input);
+            Command command = commandSupplier.get();
-        }
+            command.parse(input);
+            return command;
+        } else {
             throw new InvalidInputException("unknown command");
         }
+    }
 }

src/edu/kit/informatik/ui/command/Draw.java

@@ -2,34 +2,24 @@ package edu.kit.informatik.ui.command;
 
 import edu.kit.informatik.Terminal;
 import edu.kit.informatik.model.CardGame;
+import edu.kit.informatik.model.LogicException;
 import edu.kit.informatik.ui.InvalidInputException;
 
 import static edu.kit.informatik.ui.command.CommandFactory.DRAW;
 
 public final class Draw extends Command {
-    private Draw() {
-        
-    }
-
     @Override
-    public void apply(CardGame game) throws InvalidInputException {
+    public void apply(CardGame game) throws LogicException {
         Terminal.printLine(game.draw());
     }
 
-    /**
+    @Override
-     * Parse user input into this command object.
+    public void parse(String input) throws InvalidInputException {
-     *
-     * @param input one line of user input
-     * @return fully initialized command
-     * @throws InvalidInputException if user input is in any way invalid
-     */
-    public static Command parse(String input) throws InvalidInputException {
         if (input == null || !input.startsWith(DRAW)) {
             throw new InvalidInputException("unknown command");
         }
         if (!input.equals(DRAW)) {
             throw new InvalidInputException("invalid draw argument: none expected");
         }
-        return new Draw();
     }
 }

src/edu/kit/informatik/ui/command/ListBuildings.java

@@ -3,6 +3,7 @@ package edu.kit.informatik.ui.command;
 import edu.kit.informatik.Terminal;
 import edu.kit.informatik.model.CardGame;
 import edu.kit.informatik.model.Item;
+import edu.kit.informatik.model.LogicException;
 import edu.kit.informatik.ui.InvalidInputException;
 
 import java.util.List;
@@ -10,12 +11,8 @@ import java.util.List;
 import static edu.kit.informatik.ui.command.CommandFactory.LIST_BUILDINGS;
 
 public final class ListBuildings extends Command {
-    private ListBuildings() {
-        
-    }
-
     @Override
-    public void apply(CardGame game) throws InvalidInputException {
+    public void apply(CardGame game) throws LogicException {
         List<Item> items = game.getItems();
         if (items.isEmpty()) {
             Terminal.printLine("EMPTY");
@@ -26,20 +23,13 @@ public final class ListBuildings extends Command {
         }
     }
 
-    /**
+    @Override
-     * Parse user input into this command object.
+    public void parse(String input) throws InvalidInputException {
-     *
-     * @param input one line of user input
-     * @return fully initialized command
-     * @throws InvalidInputException if user input is in any way invalid
-     */
-    public static Command parse(String input) throws InvalidInputException {
         if (input == null || !input.startsWith(LIST_BUILDINGS)) {
             throw new InvalidInputException("unknown command");
         }
         if (!input.equals(LIST_BUILDINGS)) {
             throw new InvalidInputException("invalid list-buildings argument: none expected");
         }
-        return new ListBuildings();
     }
 }

src/edu/kit/informatik/ui/command/ListResources.java

@@ -3,6 +3,7 @@ package edu.kit.informatik.ui.command;
 import edu.kit.informatik.Terminal;
 import edu.kit.informatik.model.Card;
 import edu.kit.informatik.model.CardGame;
+import edu.kit.informatik.model.LogicException;
 import edu.kit.informatik.ui.InvalidInputException;
 
 import java.util.Deque;
@@ -10,12 +11,8 @@ import java.util.Deque;
 import static edu.kit.informatik.ui.command.CommandFactory.LIST_RESOURCES;
 
 public final class ListResources extends Command {
-    private ListResources() {
-        
-    }
-
     @Override
-    public void apply(CardGame game) throws InvalidInputException {
+    public void apply(CardGame game) throws LogicException {
         Deque<Card> resources = game.getResources();
         if (resources.isEmpty()) {
             Terminal.printLine("EMPTY");
@@ -24,20 +21,13 @@ public final class ListResources extends Command {
         }
     }
 
-    /**
+    @Override
-     * Parse user input into this command object.
+    public void parse(String input) throws InvalidInputException {
-     *
-     * @param input one line of user input
-     * @return fully initialized command
-     * @throws InvalidInputException if user input is in any way invalid
-     */
-    public static Command parse(String input) throws InvalidInputException {
         if (input == null || !input.startsWith(LIST_RESOURCES)) {
             throw new InvalidInputException("unknown command");
         }
         if (!input.equals(LIST_RESOURCES)) {
             throw new InvalidInputException("invalid list-resources argument: none expected");
         }
-        return new ListResources();
     }
 }

src/edu/kit/informatik/ui/command/Reset.java

@@ -2,35 +2,25 @@ package edu.kit.informatik.ui.command;
 
 import edu.kit.informatik.Terminal;
 import edu.kit.informatik.model.CardGame;
+import edu.kit.informatik.model.LogicException;
 import edu.kit.informatik.ui.InvalidInputException;
 
 import static edu.kit.informatik.ui.command.CommandFactory.RESET;
 
 public final class Reset extends Command {
-    private Reset() {
-        
-    }
-
     @Override
-    public void apply(CardGame game) {
+    public void apply(CardGame game) throws LogicException {
         game.reset();
         Terminal.printLine("OK");
     }
 
-    /**
+    @Override
-     * Parse user input into this command object.
+    public void parse(String input) throws InvalidInputException {
-     *
-     * @param input one line of user input
-     * @return fully initialized command
-     * @throws InvalidInputException if user input is in any way invalid
-     */
-    public static Command parse(String input) throws InvalidInputException {
         if (input == null || !input.startsWith(RESET)) {
             throw new InvalidInputException("unknown command");
         }
         if (!input.equals(RESET)) {
             throw new InvalidInputException("invalid reset argument: none expected");
         }
-        return new Reset();
     }
 }

src/edu/kit/informatik/ui/command/RollDice.java

@@ -2,6 +2,7 @@ package edu.kit.informatik.ui.command;
 
 import edu.kit.informatik.Terminal;
 import edu.kit.informatik.model.CardGame;
+import edu.kit.informatik.model.LogicException;
 import edu.kit.informatik.ui.InvalidInputException;
 
 import java.util.regex.Matcher;
@@ -12,28 +13,17 @@ import static edu.kit.informatik.ui.command.CommandFactory.ROLL_DICE;
 public final class RollDice extends Command {
     private static final Pattern ROLL_DICE_ARGUMENTS = Pattern.compile(ROLL_DICE + "(\\d) (\\d)");
 
-    private final int size;
+    private int size;
 
-    private final int rolledNumber;
+    private int rolledNumber;
-
-    private RollDice(int size, int rolledNumber) {
-        this.size = size;
-        this.rolledNumber = rolledNumber;
-    }
 
     @Override
-    public void apply(CardGame game) throws InvalidInputException {
+    public void apply(CardGame game) throws LogicException {
         Terminal.printLine(game.rollDice(size, rolledNumber));
     }
 
-    /**
+    @Override
-     * Parse user input into this command object.
+    public void parse(String input) throws InvalidInputException {
-     *
-     * @param input one line of user input
-     * @return fully initialized command
-     * @throws InvalidInputException if user input is in any way invalid
-     */
-    public static Command parse(String input) throws InvalidInputException {
         if (input == null || !input.startsWith(ROLL_DICE)) {
             throw new InvalidInputException("unknown command");
         }
@@ -41,8 +31,7 @@ public final class RollDice extends Command {
         if (!matcher.matches()) {
             throw new InvalidInputException("invalid roll dice syntax");
         }
-        final int size = Integer.parseInt(matcher.group(1));
+        size = Integer.parseInt(matcher.group(1));
-        final int rolledNumber = Integer.parseInt(matcher.group(2));
+        rolledNumber = Integer.parseInt(matcher.group(2));
-        return new RollDice(size, rolledNumber);
     }
 }

src/edu/kit/informatik/ui/command/Start.java

@@ -3,6 +3,7 @@ package edu.kit.informatik.ui.command;
 import edu.kit.informatik.Terminal;
 import edu.kit.informatik.model.Card;
 import edu.kit.informatik.model.CardGame;
+import edu.kit.informatik.model.LogicException;
 import edu.kit.informatik.ui.InvalidInputException;
 
 import java.util.ArrayDeque;
@@ -13,29 +14,19 @@ import java.util.regex.Pattern;
 public final class Start extends Command {
     private static final Pattern START_ARGUMENTS = Pattern.compile("start ((\\w+,){63}(\\w+))");
 
-    private final Deque<Card> cards;
+    private Deque<Card> cards;
-
-    private Start(Deque<Card> cards) {
-        this.cards = cards;
-    }
 
     @Override
-    public void apply(CardGame game) throws InvalidInputException {
+    public void apply(CardGame game) throws LogicException {
         if (game.start(cards)) {
             Terminal.printLine("OK");
         } else {
-            throw new InvalidInputException("could not start game");
+            throw new LogicException("could not start game");
         }
     }
 
-    /**
+    @Override
-     * Parse user input into this command object.
+    public void parse(String input) throws InvalidInputException {
-     *
-     * @param input one line of user input
-     * @return fully initialized command
-     * @throws InvalidInputException if user input is in any way invalid
-     */
-    public static Command parse(String input) throws InvalidInputException {
         if (input == null || !input.startsWith(CommandFactory.START)) {
             throw new InvalidInputException("unknown command");
         }
@@ -43,7 +34,7 @@ public final class Start extends Command {
         if (!matcher.matches()) {
             throw new InvalidInputException("invalid start arguments");
         }
-        final Deque<Card> cards = new ArrayDeque<>();
+        cards = new ArrayDeque<>();
         for (final String s : matcher.group(1).split(",")) {
             final Card card = Card.parse(s);
             if (card == null) {
@@ -51,7 +42,6 @@ public final class Start extends Command {
             }
             cards.add(card);
         }
-        return new Start(cards);
     }
     /*
     Dieser Befehl ermöglicht es dem Benutzer, ein neues Spiel zu starten. Dieser Befehl kann nur