Fix more gcc 4.7 warnings.

19 files changed, 149 insertions, 147 deletions

diff --git a/src/gui/buydialog.cpp b/src/gui/buydialog.cpp
index 7fad622df..f5e556848 100644
--- a/src/gui/buydialog.cpp
+++ b/src/gui/buydialog.cpp
@@ -55,14 +55,14 @@
 BuyDialog::DialogList BuyDialog::instances;
 
 BuyDialog::BuyDialog(int npcId):
-    Window(_("Buy"), false, 0, "buy.xml"),
+    Window(_("Buy"), false, nullptr, "buy.xml"),
     mNpcId(npcId), mMoney(0), mAmountItems(0), mMaxItems(0), mNick("")
 {
     init();
 }
 
 BuyDialog::BuyDialog(std::string nick):
-    Window(_("Buy"), false, 0, "buy.xml"),
+    Window(_("Buy"), false, nullptr, "buy.xml"),
     mNpcId(-1), mMoney(0), mAmountItems(0), mMaxItems(0), mNick(nick)
 {
     init();
@@ -153,7 +153,7 @@ void BuyDialog::init()
 BuyDialog::~BuyDialog()
 {
     delete mShopItems;
-    mShopItems = 0;
+    mShopItems = nullptr;
 
     instances.remove(this);
 }
diff --git a/src/gui/buyselldialog.cpp b/src/gui/buyselldialog.cpp
index e1063192a..2a614ed74 100644
--- a/src/gui/buyselldialog.cpp
+++ b/src/gui/buyselldialog.cpp
@@ -37,19 +37,19 @@
 BuySellDialog::DialogList BuySellDialog::instances;
 
 BuySellDialog::BuySellDialog(int npcId):
-    Window(_("Shop"), false, 0, "buysell.xml"),
+    Window(_("Shop"), false, nullptr, "buysell.xml"),
     mNpcId(npcId),
     mNick(""),
-    mBuyButton(0)
+    mBuyButton(nullptr)
 {
     init();
 }
 
 BuySellDialog::BuySellDialog(std::string nick):
-    Window(_("Shop"), false, 0, "buysell.xml"),
+    Window(_("Shop"), false, nullptr, "buysell.xml"),
     mNpcId(-1),
     mNick(nick),
-    mBuyButton(0)
+    mBuyButton(nullptr)
 {
     init();
 }
@@ -62,7 +62,7 @@ void BuySellDialog::init()
 
     static const char *buttonNames[] =
     {
-        N_("Buy"), N_("Sell"), N_("Cancel"), 0
+        N_("Buy"), N_("Sell"), N_("Cancel"), nullptr
     };
     int x = 10, y = 10;
 
diff --git a/src/gui/charcreatedialog.cpp b/src/gui/charcreatedialog.cpp
index 0cde69386..42435f036 100644
--- a/src/gui/charcreatedialog.cpp
+++ b/src/gui/charcreatedialog.cpp
@@ -180,10 +180,10 @@ CharCreateDialog::CharCreateDialog(CharSelectDialog *parent, int slot):
 CharCreateDialog::~CharCreateDialog()
 {
     delete mPlayer;
-    mPlayer = 0;
+    mPlayer = nullptr;
 
     // Make sure the char server handler knows that we're gone
-    Net::getCharHandler()->setCharCreateDialog(0);
+    Net::getCharHandler()->setCharCreateDialog(nullptr);
 }
 
 void CharCreateDialog::action(const gcn::ActionEvent &event)
@@ -335,13 +335,13 @@ void CharCreateDialog::setAttributes(const std::vector<std::string> &labels,
     {
         remove(mAttributeLabel[i]);
         delete mAttributeLabel[i];
-        mAttributeLabel[i] = 0;
+        mAttributeLabel[i] = nullptr;
         remove(mAttributeSlider[i]);
         delete mAttributeSlider[i];
-        mAttributeSlider[i] = 0;
+        mAttributeSlider[i] = nullptr;
         remove(mAttributeValue[i]);
         delete mAttributeValue[i];
-        mAttributeValue[i] = 0;
+        mAttributeValue[i] = nullptr;
     }
 
     mAttributeLabel.resize(labels.size());
diff --git a/src/gui/setup_relations.cpp b/src/gui/setup_relations.cpp
index 1921ee267..8ac61f90c 100644
--- a/src/gui/setup_relations.cpp
+++ b/src/gui/setup_relations.cpp
@@ -108,9 +108,9 @@ public:
     {
         freeWidgets();
         delete mListModel;
-        mListModel = 0;
+        mListModel = nullptr;
         delete mPlayers;
-        mPlayers = 0;
+        mPlayers = nullptr;
     }
 
     virtual int getRows() const
@@ -185,7 +185,7 @@ public:
     virtual void freeWidgets()
     {
         delete mPlayers;
-        mPlayers = 0;
+        mPlayers = nullptr;
 
         delete_all(mWidgets);
         mWidgets.clear();
@@ -310,7 +310,7 @@ Setup_Relations::~Setup_Relations()
 {
     player_relations.removeListener(this);
     delete mIgnoreActionChoicesModel;
-    mIgnoreActionChoicesModel = 0;
+    mIgnoreActionChoicesModel = nullptr;
 }
 
 
diff --git a/src/gui/setup_video.cpp b/src/gui/setup_video.cpp
index ea181ea14..794fd3324 100644
--- a/src/gui/setup_video.cpp
+++ b/src/gui/setup_video.cpp
@@ -133,7 +133,7 @@ ModeListModel::ModeListModel()
     SDL_Rect **modes = SDL_ListModes(nullptr, SDL_FULLSCREEN | SDL_HWSURFACE);
 
     /* Check which modes are available */
-    if (modes == static_cast<SDL_Rect **>(0))
+    if (modes == static_cast<SDL_Rect **>(nullptr))
     {
         logger->log1("No modes available");
     }
@@ -310,7 +310,7 @@ Setup_Video::Setup_Video():
     mParticleDetail(3 - config.getIntValue("particleEmitterSkip")),
     mParticleDetailSlider(new Slider(0, 3)),
     mParticleDetailField(new Label),
-    mDialog(0)
+    mDialog(nullptr)
 {
     setName(_("Video"));
 
@@ -446,13 +446,13 @@ Setup_Video::Setup_Video():
 Setup_Video::~Setup_Video()
 {
     delete mModeListModel;
-    mModeListModel = 0;
+    mModeListModel = nullptr;
     delete mModeList;
-    mModeList = 0;
+    mModeList = nullptr;
     delete mOpenGLListModel;
-    mOpenGLListModel = 0;
+    mOpenGLListModel = nullptr;
     delete mDialog;
-    mDialog = 0;
+    mDialog = nullptr;
 }
 
 void Setup_Video::apply()
@@ -594,7 +594,7 @@ void Setup_Video::action(const gcn::ActionEvent &event)
             if (mDialog)
             {
                 mode = mDialog->getText();
-                mDialog = 0;
+                mDialog = nullptr;
             }
             else
             {
@@ -632,7 +632,7 @@ void Setup_Video::action(const gcn::ActionEvent &event)
     }
     if (id == "~videomode")
     {
-        mDialog = 0;
+        mDialog = nullptr;
     }
     else if (id == "guialpha")
     {
diff --git a/src/gui/shopwindow.cpp b/src/gui/shopwindow.cpp
index 2215ce699..a50a485ec 100644
--- a/src/gui/shopwindow.cpp
+++ b/src/gui/shopwindow.cpp
@@ -72,14 +72,14 @@ extern std::string tradePartnerName;
 ShopWindow::DialogList ShopWindow::instances;
 
 ShopWindow::ShopWindow():
-    Window(_("Personal Shop"), false, 0, "shop.xml"),
+    Window(_("Personal Shop"), false, nullptr, "shop.xml"),
     mSelectedItem(-1),
     mAnnonceTime(0),
     mLastRequestTimeList(0),
     mLastRequestTimeItem(0),
     mRandCounter(0),
     mAcceptPlayer(""),
-    mTradeItem(0),
+    mTradeItem(nullptr),
     mTradeNick(""),
     mTradeMoney(0)
 {
@@ -152,8 +152,8 @@ ShopWindow::ShopWindow():
     }
     else
     {
-        mBuyAuctionButton = 0;
-        mSellAuctionButton = 0;
+        mBuyAuctionButton = nullptr;
+        mSellAuctionButton = nullptr;
     }
 
     Layout &layout = getLayout();
@@ -173,10 +173,10 @@ ShopWindow::~ShopWindow()
     saveList();
 
     delete mBuyShopItems;
-    mBuyShopItems = 0;
+    mBuyShopItems = nullptr;
 
     delete mSellShopItems;
-    mSellShopItems = 0;
+    mSellShopItems = nullptr;
 
     instances.remove(this);
 }
@@ -602,8 +602,8 @@ void ShopWindow::sendMessage(const std::string &nick,
 
 void ShopWindow::showList(const std::string &nick, std::string data)
 {
-    BuyDialog *buyDialog = 0;
-    SellDialog *sellDialog = 0;
+    BuyDialog *buyDialog = nullptr;
+    SellDialog *sellDialog = nullptr;
     if (data.find("B1") == 0)
     {
         data = data.substr(2);
diff --git a/src/gui/skilldialog.cpp b/src/gui/skilldialog.cpp
index 8f45be5d1..072a9cb85 100644
--- a/src/gui/skilldialog.cpp
+++ b/src/gui/skilldialog.cpp
@@ -81,8 +81,8 @@ struct SkillInfo
     gcn::Color color;
 
     SkillInfo() :
-        id(0), name(""), dispName(""), icon(0), modifiable(false),
-        visible(false), model(0), skillLevel(""), skillLevelWidth(0),
+        id(0), name(""), dispName(""), icon(nullptr), modifiable(false),
+        visible(false), model(nullptr), skillLevel(""), skillLevelWidth(0),
         skillExp(""), progress(0.0f)
     {
     }
@@ -92,7 +92,7 @@ struct SkillInfo
         if (icon)
         {
             icon->decRef();
-            icon = 0;
+            icon = nullptr;
         }
     }
 
@@ -161,9 +161,9 @@ public:
     ~SkillListBox()
     {
         delete mModel;
-        mModel = 0;
+        mModel = nullptr;
         delete mPopup;
-        mPopup = 0;
+        mPopup = nullptr;
     }
 
     SkillInfo *getSelectedInfo()
@@ -172,7 +172,7 @@ public:
         if (!mListModel || selected < 0
             || selected > mListModel->getNumberOfElements())
         {
-            return 0;
+            return nullptr;
         }
 
         return static_cast<SkillModel*>(mListModel)->getSkillAt(selected);
@@ -257,7 +257,7 @@ public:
     ~SkillTab()
     {
         delete mListBox;
-        mListBox = 0;
+        mListBox = nullptr;
     }
 
     SkillInfo *getSelectedInfo()
@@ -265,7 +265,7 @@ public:
         if (mListBox)
             return mListBox->getSelectedInfo();
         else
-            return 0;
+            return nullptr;
     }
 
 private:
@@ -273,7 +273,7 @@ private:
 };
 
 SkillDialog::SkillDialog():
-    Window(_("Skills"), false, 0, "skills.xml")
+    Window(_("Skills"), false, nullptr, "skills.xml")
 {
     setWindowName("Skills");
     setCloseButton(true);
@@ -286,7 +286,7 @@ SkillDialog::SkillDialog():
     mTabs = new TabbedArea();
     mPointsLabel = new Label("0");
     mIncreaseButton = new Button(_("Up"), "inc", this);
-    mDefaultModel = 0;
+    mDefaultModel = nullptr;
 
     place(0, 0, mTabs, 5, 5);
     place(0, 5, mPointsLabel, 4);
diff --git a/src/gui/socialwindow.cpp b/src/gui/socialwindow.cpp
index 6b07e109f..2bc8aba9b 100644
--- a/src/gui/socialwindow.cpp
+++ b/src/gui/socialwindow.cpp
@@ -66,10 +66,10 @@ protected:
     friend class SocialWindow;
 
     SocialTab():
-            mInviteDialog(0),
-            mConfirmDialog(0),
-            mScroll(0),
-            mList(0)
+            mInviteDialog(nullptr),
+            mConfirmDialog(nullptr),
+            mScroll(nullptr),
+            mList(nullptr)
     {}
 
     virtual ~SocialTab()
@@ -129,9 +129,9 @@ public:
     ~SocialGuildTab()
     {
         delete mList;
-        mList = 0;
+        mList = nullptr;
         delete mScroll;
-        mScroll = 0;
+        mScroll = nullptr;
     }
 
     void action(const gcn::ActionEvent &event)
@@ -147,11 +147,11 @@ public:
                     _("Invited user %s to guild %s."),
                     name.c_str(), mGuild->getName().c_str()), BY_SERVER);
             }
-            mInviteDialog = 0;
+            mInviteDialog = nullptr;
         }
         else if (event.getId() == "~do invite")
         {
-            mInviteDialog = 0;
+            mInviteDialog = nullptr;
         }
         else if (event.getId() == "yes")
         {
@@ -161,11 +161,11 @@ public:
                 localChatTab->chatLog(strprintf(_("Guild %s quit requested."),
                                       mGuild->getName().c_str()), BY_SERVER);
             }
-            mConfirmDialog = 0;
+            mConfirmDialog = nullptr;
         }
         else if (event.getId() == "~yes")
         {
-            mConfirmDialog = 0;
+            mConfirmDialog = nullptr;
         }
     }
 
@@ -227,9 +227,9 @@ public:
     ~SocialGuildTab2()
     {
         delete mList;
-        mList = 0;
+        mList = nullptr;
         delete mScroll;
-        mScroll = 0;
+        mScroll = nullptr;
     }
 
     void action(const gcn::ActionEvent &event A_UNUSED)
@@ -330,9 +330,9 @@ public:
     ~SocialPartyTab()
     {
         delete mList;
-        mList = 0;
+        mList = nullptr;
         delete mScroll;
-        mScroll = 0;
+        mScroll = nullptr;
     }
 
     void action(const gcn::ActionEvent &event)
@@ -465,11 +465,11 @@ public:
     ~SocialPlayersTab()
     {
         delete mList;
-        mList = 0;
+        mList = nullptr;
         delete mScroll;
-        mScroll = 0;
+        mScroll = nullptr;
         delete mBeings;
-        mBeings = 0;
+        mBeings = nullptr;
     }
 
     void updateList()
@@ -525,9 +525,9 @@ public:
     {
         std::vector<Avatar*> *avatars = mBeings->getMembers();
         if (!avatars)
-            return 0;
+            return nullptr;
 
-        Avatar *ava = 0;
+        Avatar *ava = nullptr;
         std::vector<Avatar*>::const_iterator i = avatars->begin();
         while (i != avatars->end())
         {
@@ -629,11 +629,11 @@ public:
     ~SocialNavigationTab()
     {
         delete mList;
-        mList = 0;
+        mList = nullptr;
         delete mScroll;
-        mScroll = 0;
+        mScroll = nullptr;
         delete mBeings;
-        mBeings = 0;
+        mBeings = nullptr;
     }
 
     void invite()
@@ -751,7 +751,7 @@ public:
         if (!map)
             return;
 
-        Avatar *ava = 0;
+        Avatar *ava = nullptr;
         std::vector<Avatar*>::const_iterator i = avatars->begin();
         while (i != avatars->end())
         {
@@ -785,7 +785,7 @@ public:
         if (!map)
             return 01;
 
-        Avatar *ava = 0;
+        Avatar *ava = nullptr;
         std::vector<Avatar*>::const_iterator i = avatars->begin();
         unsigned num = 0;
         while (i != avatars->end())
@@ -906,11 +906,11 @@ public:
     ~SocialAttackTab()
     {
         delete mList;
-        mList = 0;
+        mList = nullptr;
         delete mScroll;
-        mScroll = 0;
+        mScroll = nullptr;
         delete mBeings;
-        mBeings = 0;
+        mBeings = nullptr;
     }
 
     void invite()
@@ -1114,11 +1114,11 @@ private:
 };
 
 SocialWindow::SocialWindow() :
-    Window(_("Social"), false, 0, "social.xml"),
+    Window(_("Social"), false, nullptr, "social.xml"),
     mGuildInvited(0),
-    mGuildAcceptDialog(0),
-    mPartyAcceptDialog(0),
-    mMap(0),
+    mGuildAcceptDialog(nullptr),
+    mPartyAcceptDialog(nullptr),
+    mMap(nullptr),
     mLastUpdateTime(0),
     mNeedUpdate(false),
     mProcessedPortals(false)
@@ -1165,7 +1165,7 @@ SocialWindow::SocialWindow() :
     }
     else
     {
-        mAttackFilter = 0;
+        mAttackFilter = nullptr;
     }
 
     if (player_node && player_node->getParty())
@@ -1198,13 +1198,13 @@ SocialWindow::~SocialWindow()
         mPartyInviter = "";
     }
     delete mCreatePopup;
-    mCreatePopup = 0;
+    mCreatePopup = nullptr;
     delete mPlayers;
-    mPlayers = 0;
+    mPlayers = nullptr;
     delete mNavigation;
-    mNavigation = 0;
+    mNavigation = nullptr;
     delete mAttackFilter;
-    mAttackFilter = 0;
+    mAttackFilter = nullptr;
 }
 
 bool SocialWindow::addTab(Guild *guild)
@@ -1212,7 +1212,7 @@ bool SocialWindow::addTab(Guild *guild)
     if (mGuilds.find(guild) != mGuilds.end())
         return false;
 
-    SocialTab *tab = 0;
+    SocialTab *tab = nullptr;
     if (guild->getServerGuild())
         tab = new SocialGuildTab(guild);
     else
diff --git a/src/gui/specialswindow.cpp b/src/gui/specialswindow.cpp
index a52b30c62..6abff3796 100644
--- a/src/gui/specialswindow.cpp
+++ b/src/gui/specialswindow.cpp
@@ -76,7 +76,7 @@ class SpecialEntry : public Container
 };
 
 SpecialsWindow::SpecialsWindow():
-    Window(_("Specials"), false, 0, "specials.xml")
+    Window(_("Specials"), false, nullptr, "specials.xml")
 {
     setWindowName("Specials");
     setCloseButton(true);
diff --git a/src/gui/statuswindow.cpp b/src/gui/statuswindow.cpp
index bd88fad7e..37a706baf 100644
--- a/src/gui/statuswindow.cpp
+++ b/src/gui/statuswindow.cpp
@@ -123,7 +123,8 @@ class ChangeDisplay : public AttrDisplay, gcn::ActionListener
 };
 
 StatusWindow::StatusWindow():
-    Window(player_node ? player_node->getName() : "?", false, 0, "status.xml")
+    Window(player_node ? player_node->getName() :
+        "?", false, nullptr, "status.xml")
 {
     listen(Mana::CHANNEL_ATTRIBUTES);
 
@@ -177,8 +178,8 @@ StatusWindow::StatusWindow():
     }
     else
     {
-        mMpLabel = 0;
-        mMpBar = 0;
+        mMpLabel = nullptr;
+        mMpBar = nullptr;
     }
 
     place(0, 0, mLvlLabel, 3);
@@ -210,9 +211,9 @@ StatusWindow::StatusWindow():
     }
     else
     {
-        mJobLvlLabel = 0;
-        mJobLabel = 0;
-        mJobBar = 0;
+        mJobLvlLabel = nullptr;
+        mJobLabel = nullptr;
+        mJobBar = nullptr;
     }
 
     // ----------------------
@@ -963,6 +964,7 @@ AttrDisplay::AttrDisplay(int id, const std::string &name):
 AttrDisplay::~AttrDisplay()
 {
     delete mLayout;
+    mLayout = nullptr;
 }
 
 std::string AttrDisplay::update()
@@ -1012,7 +1014,7 @@ ChangeDisplay::ChangeDisplay(int id, const std::string &name):
     }
     else
     {
-        mDec = 0;
+        mDec = nullptr;
     }
 
     update();
diff --git a/src/gui/textdialog.cpp b/src/gui/textdialog.cpp
index c1539684c..a32b13aa4 100644
--- a/src/gui/textdialog.cpp
+++ b/src/gui/textdialog.cpp
@@ -40,8 +40,8 @@ int TextDialog::instances = 0;
 TextDialog::TextDialog(const std::string &title, const std::string &msg,
                        Window *parent, bool isPassword):
     Window(title, true, parent, "textdialog.xml"),
-    mTextField(0),
-    mPasswordField(0)
+    mTextField(nullptr),
+    mPasswordField(nullptr)
 {
     mEnabledKeyboard = keyboard.isEnabled();
     keyboard.setEnabled(false);
diff --git a/src/gui/theme.cpp b/src/gui/theme.cpp
index 0a1a930a9..0246a5b62 100644
--- a/src/gui/theme.cpp
+++ b/src/gui/theme.cpp
@@ -48,7 +48,7 @@ static std::string defaultThemePath;
 
 std::string Theme::mThemePath;
 std::string Theme::mThemeName;
-Theme *Theme::mInstance = 0;
+Theme *Theme::mInstance = nullptr;
 
 // Set the theme path...
 static void initDefaultThemePath()
@@ -82,18 +82,18 @@ Skin::~Skin()
     for (int i = 0; i < 9; i++)
     {
         delete mBorder.grid[i];
-        mBorder.grid[i] = 0;
+        mBorder.grid[i] = nullptr;
     }
 
     if (mCloseImage)
     {
         mCloseImage->decRef();
-        mCloseImage = 0;
+        mCloseImage = nullptr;
     }
     delete mStickyImageUp;
-    mStickyImageUp = 0;
+    mStickyImageUp = nullptr;
     delete mStickyImageDown;
-    mStickyImageDown = 0;
+    mStickyImageDown = nullptr;
 }
 
 void Skin::updateAlpha(float minimumOpacityAllowed)
@@ -182,7 +182,7 @@ Theme *Theme::instance()
 void Theme::deleteInstance()
 {
     delete mInstance;
-    mInstance = 0;
+    mInstance = nullptr;
 }
 
 gcn::Color Theme::getProgressColor(int type, float progress)
@@ -295,7 +295,7 @@ void Theme::optionChanged(const std::string &)
 Skin *Theme::readSkin(const std::string &filename)
 {
     if (filename.empty())
-        return 0;
+        return nullptr;
 
 //    std::string filename = filename0;
 //    ResourceManager *resman = ResourceManager::getInstance();
@@ -306,14 +306,14 @@ Skin *Theme::readSkin(const std::string &filename)
     xmlNodePtr rootNode = doc.rootNode();
 
     if (!rootNode || !xmlStrEqual(rootNode->name, BAD_CAST "skinset"))
-        return 0;
+        return nullptr;
 
     const std::string skinSetImage = XML::getProperty(rootNode, "image", "");
 
     if (skinSetImage.empty())
     {
         logger->log1("Theme::readSkin(): Skinset does not define an image!");
-        return 0;
+        return nullptr;
     }
 
     logger->log("Theme::load(): <skinset> defines '%s' as a skin image.",
@@ -355,7 +355,7 @@ Skin *Theme::readSkin(const std::string &filename)
                         }
                         else
                         {
-                            border.grid[0] = 0;
+                            border.grid[0] = nullptr;
                         }
                     }
                     else if (partType == "top-edge")
@@ -367,7 +367,7 @@ Skin *Theme::readSkin(const std::string &filename)
                         }
                         else
                         {
-                            border.grid[1] = 0;
+                            border.grid[1] = nullptr;
                         }
                     }
                     else if (partType == "top-right-corner")
@@ -379,7 +379,7 @@ Skin *Theme::readSkin(const std::string &filename)
                         }
                         else
                         {
-                            border.grid[2] = 0;
+                            border.grid[2] = nullptr;
                         }
                     }
 
@@ -393,7 +393,7 @@ Skin *Theme::readSkin(const std::string &filename)
                         }
                         else
                         {
-                            border.grid[3] = 0;
+                            border.grid[3] = nullptr;
                         }
                     }
                     else if (partType == "bg-quad")
@@ -405,7 +405,7 @@ Skin *Theme::readSkin(const std::string &filename)
                         }
                         else
                         {
-                            border.grid[4] = 0;
+                            border.grid[4] = nullptr;
                         }
                     }
                     else if (partType == "right-edge")
@@ -417,7 +417,7 @@ Skin *Theme::readSkin(const std::string &filename)
                         }
                         else
                         {
-                            border.grid[5] = 0;
+                            border.grid[5] = nullptr;
                         }
                     }
 
@@ -431,7 +431,7 @@ Skin *Theme::readSkin(const std::string &filename)
                         }
                         else
                         {
-                            border.grid[6] = 0;
+                            border.grid[6] = nullptr;
                         }
                     }
                     else if (partType == "bottom-edge")
@@ -443,7 +443,7 @@ Skin *Theme::readSkin(const std::string &filename)
                         }
                         else
                         {
-                            border.grid[7] = 0;
+                            border.grid[7] = nullptr;
                         }
                     }
                     else if (partType == "bottom-right-corner")
@@ -455,7 +455,7 @@ Skin *Theme::readSkin(const std::string &filename)
                         }
                         else
                         {
-                            border.grid[8] = 0;
+                            border.grid[8] = nullptr;
                         }
                     }
 
@@ -490,8 +490,8 @@ Skin *Theme::readSkin(const std::string &filename)
     // to look for window buttons
     Image *closeImage = Theme::getImageFromTheme("close_button.png");
     Image *sticky = Theme::getImageFromTheme("sticky_button.png");
-    Image *stickyImageUp = 0;
-    Image *stickyImageDown = 0;
+    Image *stickyImageUp = nullptr;
+    Image *stickyImageDown = nullptr;
     if (sticky)
     {
         stickyImageUp = sticky->getSubImage(0, 0, 15, 15);
@@ -526,7 +526,7 @@ void Theme::fillSkinsList(std::vector<std::string> &list)
     char **skins = PHYSFS_enumerateFiles(
         branding.getStringValue("guiThemePath").c_str());
 
-    for (char **i = skins; *i != 0; i++)
+    for (char **i = skins; *i; i++)
     {
         if (PHYSFS_isDirectory((
             branding.getStringValue("guiThemePath") + *i).c_str()))
@@ -544,7 +544,7 @@ void Theme::fillFontsList(std::vector<std::string> &list)
     char **fonts = PHYSFS_enumerateFiles(
         branding.getStringValue("fontsPath").c_str());
 
-    for (char **i = fonts; *i != 0; i++)
+    for (char **i = fonts; *i; i++)
     {
         if (!PHYSFS_isDirectory((
             branding.getStringValue("fontsPath") + *i).c_str()))
diff --git a/src/gui/tradewindow.cpp b/src/gui/tradewindow.cpp
index bd7e9bb1e..506bf65c9 100644
--- a/src/gui/tradewindow.cpp
+++ b/src/gui/tradewindow.cpp
@@ -63,11 +63,11 @@
 #define CAPTION_ACCEPTED _("Agreed. Waiting...")
 
 TradeWindow::TradeWindow():
-    Window(_("Trade: You"), false, 0, "trade.xml"),
+    Window(_("Trade: You"), false, nullptr, "trade.xml"),
     mMyInventory(new Inventory(Inventory::TRADE)),
     mPartnerInventory(new Inventory(Inventory::TRADE)),
     mStatus(PROPOSING),
-    mAutoAddItem(0),
+    mAutoAddItem(nullptr),
     mAutoAddToNick(""),
     mGotMoney(0),
     mGotMaxMoney(0),
@@ -390,7 +390,7 @@ void TradeWindow::close()
 
 void TradeWindow::clear()
 {
-    mAutoAddItem = 0;
+    mAutoAddItem = nullptr;
     mAutoAddToNick = "";
     mAutoMoney = 0;
     mAutoAddAmount = 0;
diff --git a/src/gui/unregisterdialog.cpp b/src/gui/unregisterdialog.cpp
index cc5caca60..c43f28400 100644
--- a/src/gui/unregisterdialog.cpp
+++ b/src/gui/unregisterdialog.cpp
@@ -47,7 +47,7 @@
 #include "debug.h"
 
 UnRegisterDialog::UnRegisterDialog(LoginData *data):
-    Window(_("Unregister"), true, 0, "unregister.xml"),
+    Window(_("Unregister"), true, nullptr, "unregister.xml"),
     mWrongDataNoticeListener(new WrongDataNoticeListener),
     mLoginData(data)
 {
@@ -92,7 +92,7 @@ UnRegisterDialog::UnRegisterDialog(LoginData *data):
 UnRegisterDialog::~UnRegisterDialog()
 {
     delete mWrongDataNoticeListener;
-    mWrongDataNoticeListener = 0;
+    mWrongDataNoticeListener = nullptr;
 }
 
 void UnRegisterDialog::action(const gcn::ActionEvent &event)
diff --git a/src/gui/updaterwindow.cpp b/src/gui/updaterwindow.cpp
index b605d30df..ed745aa74 100644
--- a/src/gui/updaterwindow.cpp
+++ b/src/gui/updaterwindow.cpp
@@ -135,7 +135,7 @@ UpdaterWindow::UpdaterWindow(const std::string &updateHost,
                              const std::string &updatesDir,
                              bool applyUpdates,
                              int updateType):
-    Window(_("Updating..."), false, 0, "update.xml"),
+    Window(_("Updating..."), false, nullptr, "update.xml"),
     mDownloadStatus(UPDATE_NEWS),
     mUpdateHost(updateHost),
     mUpdatesDir(updatesDir),
@@ -202,7 +202,7 @@ UpdaterWindow::~UpdaterWindow()
         mDownload->cancel();
 
         delete mDownload;
-        mDownload = 0;
+        mDownload = nullptr;
     }
     free(mMemoryBuffer);
 }
diff --git a/src/gui/viewport.cpp b/src/gui/viewport.cpp
index 13c0a8cc0..3086a027f 100644
--- a/src/gui/viewport.cpp
+++ b/src/gui/viewport.cpp
@@ -56,7 +56,7 @@
 extern volatile int tick_time;
 
 Viewport::Viewport():
-    mMap(0),
+    mMap(nullptr),
     mMouseX(0),
     mMouseY(0),
     mPixelViewX(0.0f),
@@ -65,9 +65,9 @@ Viewport::Viewport():
     mCameraMode(0),
     mPlayerFollowMouse(false),
     mLocalWalkTime(-1),
-    mHoverBeing(0),
-    mHoverItem(0),
-    mHoverSign(0),
+    mHoverBeing(nullptr),
+    mHoverItem(nullptr),
+    mHoverSign(nullptr),
     mCameraRelativeX(0),
     mCameraRelativeY(0)
 {
@@ -104,11 +104,11 @@ Viewport::~Viewport()
     config.removeListener("enableLazyScrolling", this);
 
     delete mPopupMenu;
-    mPopupMenu = 0;
+    mPopupMenu = nullptr;
     delete mBeingPopup;
-    mBeingPopup = 0;
+    mBeingPopup = nullptr;
     delete mTextPopup;
-    mTextPopup = 0;
+    mTextPopup = nullptr;
 }
 
 void Viewport::setMap(Map *map)
@@ -699,7 +699,7 @@ void Viewport::showUndressPopup(int x, int y, Being *being, Item *item)
 void Viewport::closePopupMenu()
 {
     if (mPopupMenu)
-        mPopupMenu->handleLink("cancel", 0);
+        mPopupMenu->handleLink("cancel", nullptr);
 }
 
 void Viewport::optionChanged(const std::string &name A_UNUSED)
@@ -738,7 +738,7 @@ void Viewport::mouseMoved(gcn::MouseEvent &event A_UNUSED)
         mBeingPopup->setVisible(false);
     }
 
-    mHoverItem = 0;
+    mHoverItem = nullptr;
     if (!mHoverBeing && actorSpriteManager)
     {
         mHoverItem = actorSpriteManager->findItem(x / mMap->getTileWidth(),
@@ -844,17 +844,17 @@ void Viewport::hideBeingPopup()
 void Viewport::clearHover(ActorSprite *actor)
 {
     if (mHoverBeing == actor)
-        mHoverBeing = 0;
+        mHoverBeing = nullptr;
 
     if (mHoverItem == actor)
-        mHoverItem = 0;
+        mHoverItem = nullptr;
 }
 
 void Viewport::cleanHoverItems()
 {
-    mHoverBeing = 0;
-    mHoverItem = 0;
-    mHoverSign = 0;
+    mHoverBeing = nullptr;
+    mHoverItem = nullptr;
+    mHoverSign = nullptr;
 }
 
 void Viewport::moveCamera(int dx, int dy)
diff --git a/src/gui/whoisonline.cpp b/src/gui/whoisonline.cpp
index b6d67fa83..ead38f42b 100644
--- a/src/gui/whoisonline.cpp
+++ b/src/gui/whoisonline.cpp
@@ -82,7 +82,7 @@ class NameFunctuator
 } nameCompare;
 
 WhoIsOnline::WhoIsOnline():
-    Window(_("Who Is Online - Updating"), false, 0, "whoisonline.xml"),
+    Window(_("Who Is Online - Updating"), false, nullptr, "whoisonline.xml"),
     mThread(nullptr),
     mDownloadStatus(UPDATE_LIST),
     mDownloadComplete(true),
@@ -140,7 +140,7 @@ WhoIsOnline::~WhoIsOnline()
         SDL_WaitThread(mThread, nullptr);
 
     free(mMemoryBuffer);
-    mMemoryBuffer = 0;
+    mMemoryBuffer = nullptr;
 
     // Remove possibly leftover temporary download
     delete[] mCurlError;
@@ -333,7 +333,7 @@ void WhoIsOnline::loadList()
 
     // Free the memory buffer now that we don't need it anymore
     free(mMemoryBuffer);
-    mMemoryBuffer = 0;
+    mMemoryBuffer = nullptr;
 
     if (mScrollArea->getVerticalMaxScroll() <
         mScrollArea->getVerticalScrollAmount())
@@ -377,7 +377,7 @@ int WhoIsOnline::downloadThread(void *ptr)
             if (!wio->mAllowUpdate)
             {
                 curl_easy_cleanup(curl);
-                curl = 0;
+                curl = nullptr;
                 break;
             }
             wio->mDownloadedBytes = 0;
@@ -398,7 +398,7 @@ int WhoIsOnline::downloadThread(void *ptr)
             curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 7);
             curl_easy_setopt(curl, CURLOPT_TIMEOUT, 30);
 
-            struct curl_slist *pHeaders = 0;
+            struct curl_slist *pHeaders = nullptr;
             // Make sure the resources2.txt and news.txt aren't cached,
             // in order to always get the latest version.
             pHeaders = curl_slist_append(pHeaders, "pragma: no-cache");
@@ -422,7 +422,7 @@ int WhoIsOnline::downloadThread(void *ptr)
                 attempts++;
                 curl_easy_cleanup(curl);
                 curl_slist_free_all(pHeaders);
-                curl = 0;
+                curl = nullptr;
                 continue;
             }
 
diff --git a/src/gui/windowmenu.cpp b/src/gui/windowmenu.cpp
index 487035350..3f41be466 100644
--- a/src/gui/windowmenu.cpp
+++ b/src/gui/windowmenu.cpp
@@ -58,7 +58,7 @@ extern Window *botCheckerWindow;
 extern Window *socialWindow;
 
 WindowMenu::WindowMenu():
-    mEmotePopup(0)
+    mEmotePopup(nullptr)
 {
     int x = 0, h = 0;
 
@@ -115,7 +115,7 @@ WindowMenu::WindowMenu():
 WindowMenu::~WindowMenu()
 {
     delete mTextPopup;
-    mTextPopup = 0;
+    mTextPopup = nullptr;
     mButtonNames.clear();
     std::vector <gcn::Button*>::iterator it, it_end;
     for (it = mButtons.begin(), it_end = mButtons.end(); it != it_end; ++it)
@@ -132,7 +132,7 @@ WindowMenu::~WindowMenu()
 
 void WindowMenu::action(const gcn::ActionEvent &event)
 {
-    Window *window = 0;
+    Window *window = nullptr;
 
     if (event.getId() == ":-)")
     {
@@ -153,14 +153,14 @@ void WindowMenu::action(const gcn::ActionEvent &event)
             }
             else
             {
-                mEmotePopup = 0;
+                mEmotePopup = nullptr;
             }
         }
         else
         {
             if (windowContainer)
                 windowContainer->scheduleDelete(mEmotePopup);
-            mEmotePopup = 0;
+            mEmotePopup = nullptr;
         }
     }
     else if (event.getId() == "STA")
@@ -238,7 +238,7 @@ void WindowMenu::valueChanged(const gcn::SelectionEvent &event)
 
         if (windowContainer)
             windowContainer->scheduleDelete(mEmotePopup);
-        mEmotePopup = 0;
+        mEmotePopup = nullptr;
     }
 }
 
diff --git a/src/gui/worldselectdialog.cpp b/src/gui/worldselectdialog.cpp
index 3749049fe..f7b505610 100644
--- a/src/gui/worldselectdialog.cpp
+++ b/src/gui/worldselectdialog.cpp
@@ -74,7 +74,7 @@ class WorldListModel : public gcn::ListModel
 };
 
 WorldSelectDialog::WorldSelectDialog(Worlds worlds):
-    Window(_("Select World"), false, 0, "world.xml")
+    Window(_("Select World"), false, nullptr, "world.xml")
 {
     mWorldListModel = new WorldListModel(worlds);
     mWorldList = new ListBox(mWorldListModel);
@@ -114,7 +114,7 @@ WorldSelectDialog::WorldSelectDialog(Worlds worlds):
 WorldSelectDialog::~WorldSelectDialog()
 {
     delete mWorldListModel;
-    mWorldListModel = 0;
+    mWorldListModel = nullptr;
 }
 
 void WorldSelectDialog::action(const gcn::ActionEvent &event)