added base implementation of the store class

src/Core/Crawl/iitem.h

@@ -55,6 +55,12 @@ public:
      */
     virtual int cost() const = 0;
 
+    /**
+     * @brief requiredTier This method return requried level to unlock.
+     * @return requried level to unlock.
+     */
+    virtual int requiredTier() const = 0;
+
     /**
      * @brief itemId This method return hash of the IItem::itemTextId.
      * @return hash of the IItem::itemTextId.

src/Core/private/store.cpp

@@ -0,0 +1,46 @@
+//#
+//# Copyright (C) 2021-2021 QuasarApp.
+//# Distributed under the GPLv3 software license, see the accompanying
+//# Everyone is permitted to copy and distribute verbatim copies
+//# of this license document, but changing it is not allowed.
+//#
+
+
+#include "store.h"
+
+#include <Crawl/iitem.h>
+namespace CRAWL {
+
+Store::Store()
+{
+
+}
+
+bool Store::buy(User &buyer, int itemId) {
+
+    auto item = getItemById(itemId);
+
+    if (buyer.getTier() < item->requiredTier()) {
+        return false;
+    }
+
+    if (buyer.getMoney() < item->cost()) {
+        return false;
+    }
+
+    buyer.setMoney(buyer.getMoney() - item->cost());
+    buyer.unclokItem(itemId);
+
+    return true;
+}
+
+bool Store::init(const QHash<int, const IItem *> &availabelItems) {
+    _store = availabelItems;
+
+    return true;
+}
+
+const IItem *Store::getItemById(int id) const {
+    return _store.value(id, nullptr);
+}
+}

src/Core/private/store.h

@@ -0,0 +1,52 @@
+//#
+//# Copyright (C) 2021-2021 QuasarApp.
+//# Distributed under the GPLv3 software license, see the accompanying
+//# Everyone is permitted to copy and distribute verbatim copies
+//# of this license document, but changing it is not allowed.
+//#
+
+
+#ifndef STORE_H
+#define STORE_H
+
+#include "user.h"
+
+namespace CRAWL {
+
+class IItem;
+
+/**
+ * @brief The Store class contains method for control all game items beetwin users.
+ */
+class Store
+{
+public:
+    Store();
+
+    /**
+     * @brief buy This method unlock the item with @a itemId for @a buyer. The
+     * @param buyer This is user that will be buy item with @a itemId id.
+     * @param itemId This is id of the item that @a buyer will be buy
+     * @return true if the deal gas been completed successfully
+     */
+    bool buy(User& buyer, int itemId);
+
+    /**
+     * @brief init This method initialise store of the game.
+     * @param availabelItems This is hash of the available item.
+     * @return true if the items inited successfuly else false.
+     */
+    bool init(const QHash<int, const IItem*>& availabelItems);
+
+    /**
+     * @brief getItemById This method return item by id.
+     * @param id This is id of the required item.
+     * @return pointer to item. if The item with @a id not found then return nullptr.
+     */
+    const IItem* getItemById(int id) const;
+
+private:
+    QHash<int, const IItem*> _store;
+};
+}
+#endif // STORE_H

src/Core/private/user.cpp

@@ -11,19 +11,21 @@ namespace CRAWL {
 constexpr float tierMul = 1.2;
 constexpr int firstTierCount = 10;
 
-// Tiers table
+/// @private
 template <int N>
 struct Tiers
 {
     enum { value = static_cast<const int>(tierMul * Tiers<N - 1>::value)};
 };
 
+/// @private
 template <>
 struct Tiers<0>
 {
     enum { value = 0 };
 };
 
+/// @private
 template <>
 struct Tiers<1>
 {