Implement animal encounters

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

@@ -13,6 +13,40 @@ public enum Card {
         return this.equals(WOOD) || this.equals(METAL) || this.equals(PLASTIC);
     }
 
+    public boolean needsDiceRoll() {
+        return this.equals(SPIDER) || this.equals(SNAKE) || this.equals(TIGER);
+    }
+
+    public int diceSizeNeeded() {
+        switch (this) {
+            case SPIDER:
+                return 4;
+            case SNAKE:
+                return 6;
+            case TIGER:
+                return 8;
+            default:
+                return 0;
+        }
+    }
+
+    public int minimumDiceRollNeeded() {
+        switch (this) {
+            case SPIDER:
+                return 3;
+            case SNAKE:
+                return 4;
+            case TIGER:
+                return 5;
+            default:
+                return 0;
+        }
+    }
+
+    public boolean isCatastrophe() {
+        return this.equals(THUNDERSTORM);
+    }
+
     public static Card parse(String input) {
         switch (input) {
             case "wood":

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

@@ -2,14 +2,25 @@ package edu.kit.informatik.model;
 
 import edu.kit.informatik.ui.InvalidInputException;
 
+import java.util.ArrayDeque;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Deque;
 import java.util.List;
+import java.util.Objects;
+
+import static edu.kit.informatik.model.Item.AXE;
+import static edu.kit.informatik.model.Item.CLUB;
+import static edu.kit.informatik.model.Item.FIREPLACE;
+import static edu.kit.informatik.model.Item.SHACK;
 
 public class CardGame {
     private Deque<Card> cardStack;
-    private List<Card> resources = new ArrayList<>();
+    private Deque<Card> resources = new ArrayDeque<>();
     private List<Item> buildings = new ArrayList<>();
+    private boolean fightingAnimal = false;
+    private Integer awaitedDiceSize = null;
+    private Integer minimumDiceRoll = null;
 
     /**
      * 
@@ -29,25 +40,81 @@ public class CardGame {
         if (cardStack == null || cardStack.isEmpty()) {
             throw new InvalidInputException("no card to draw exists");
         }
-        // TODO: awaiting dice roll
+        if (awaitedDiceSize != null) {
+            throw new InvalidInputException("roll dice, please");
+        }
         Card card = cardStack.removeFirst();
         if (card.isResource()) {
             resources.add(card);
+        } else if (card.needsDiceRoll()) {
+            fightingAnimal = true;
+            awaitedDiceSize = card.diceSizeNeeded();
+            minimumDiceRoll = card.minimumDiceRollNeeded();
+        } else if (card.isCatastrophe()) {
+            clearResources();
+            buildings.remove(FIREPLACE);
         }
-        // TODO: make game await dice roll
         return card;
     }
 
-    public boolean build(Item item) throws InvalidInputException {
-        Card[] resourcesNeeded = item.resourcesNeeded();
-        // TODO
-        buildings.add(item);
-        return true;
+    public String rollDice(int size, int roll) throws InvalidInputException {
+        if (awaitedDiceSize == null) {
+            throw new InvalidInputException("not expecting dice roll");
+        }
+        if (awaitedDiceSize != size) {
+            throw new InvalidInputException("unexpected dice size");
+        }
+        if (fightingAnimal) {
+            int bonus = buildings.contains(AXE) ? 2 : buildings.contains(CLUB) ? 1 : 0;
+            if (roll + bonus < minimumDiceRoll) {
+                clearResources();
+                return "lose";
+            } else {
+                return "survived";
+            }
+        } else {
+            // TODO trying to flee
+            return "win";
+            // return "lose";
+        }
     }
 
-    public List<Card> getResources() {
-        // do not allow caller to modify internal list
-        return new ArrayList<>(resources);
+    public void clearResources() {
+        int keepLastResources = buildings.contains(SHACK) ? 5 : 0;
+        while (resources.size() > keepLastResources) {
+            resources.removeFirst();
+        }
+    }
+
+    public boolean build(Item item) throws InvalidInputException {
+        if (item == null) {
+            throw new InvalidInputException("can not build null item");
+        }
+        Card[] resourcesNeeded = item.resourcesNeeded();
+        for (Card resource : resources) {
+            for (int j = 0; j < resourcesNeeded.length; j++) {
+                if (resourcesNeeded[j] != null && resourcesNeeded[j] == resource) {
+                    resourcesNeeded[j] = null;
+                    break;
+                }
+            }
+        }
+        if (Arrays.stream(resourcesNeeded).allMatch(Objects::isNull)) {
+            // remove used resources
+            for (Card resource : item.resourcesNeeded()) {
+                assert(resources.remove(resource)); // TODO: remove assert
+            }
+            buildings.add(item);
+            // TODO: building to flee
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    public Deque<Card> getResources() {
+        // do not allow caller to modify internal queue
+        return new ArrayDeque<>(resources);
     }
 
     public List<Item> getBuildings() {
@@ -57,7 +124,10 @@ public class CardGame {
 
     public void reset() {
         this.cardStack = null;
-        this.resources = new ArrayList<>();
+        this.resources = new ArrayDeque<>();
         this.buildings = new ArrayList<>();
+        this.fightingAnimal = false;
+        this.awaitedDiceSize = null;
+        this.minimumDiceRoll = null;
     }
 }