diff --git a/mario/blocks.hpp b/mario/blocks.hpp
index 91c7039..fc47965 100644
--- a/mario/blocks.hpp
+++ b/mario/blocks.hpp
@@ -23,7 +23,7 @@ public:
     LandType::Value getType() const;
     virtual void onScrollUp() {}
     virtual void onScrollDown() {}
-    virtual uint8_t getData() {
+    virtual uint8_t getData() const {
         return 0;
     }
     virtual void setData( uint8_t /*UNUSED*/ ) {}
diff --git a/mario/blocks/coineditorblock.cpp b/mario/blocks/coineditorblock.cpp
index d159bdf..2c611f0 100644
--- a/mario/blocks/coineditorblock.cpp
+++ b/mario/blocks/coineditorblock.cpp
@@ -66,7 +66,7 @@ void CoinEditorBlock::onScrollDown() {
     subtractOne();
 }
 
-uint8_t CoinEditorBlock::getData() {
+uint8_t CoinEditorBlock::getData() const {
     return _amount;
 }
 
diff --git a/mario/blocks/coineditorblock.hpp b/mario/blocks/coineditorblock.hpp
index 11e3685..a68b532 100644
--- a/mario/blocks/coineditorblock.hpp
+++ b/mario/blocks/coineditorblock.hpp
@@ -17,7 +17,7 @@ public:
     void setAmount( int amount );
     void onScrollUp() override;
     void onScrollDown() override;
-    uint8_t getData() override;
+    uint8_t getData() const override;
     void setData( uint8_t data ) override;
 
 private:
diff --git a/mario/editor.cpp b/mario/editor.cpp
index 8055fa3..c28024f 100644
--- a/mario/editor.cpp
+++ b/mario/editor.cpp
@@ -51,11 +51,11 @@ struct ToolType {
 };
 
 struct MouseInfo {
-    uint64_t cur_flags;
-    uint64_t prev_flags;
+    uint64_t cur_flags{};
+    uint64_t prev_flags{};
     SDLPP::Vec2D< int > edit_box;
     SDLPP::Vec2D< int > tool_box;
-    ToolType::Value tool_type;
+    ToolType::Value tool_type{};
 };
 
 struct MapInfo {
@@ -76,10 +76,10 @@ struct ToolInfo {
 };
 
 struct GlobalVars {
-    MouseInfo mouse;
-    MapInfo map;
-    ToolInfo tool;
-    uint64_t flags;
+    MouseInfo mouse{};
+    MapInfo map{};
+    ToolInfo tool{};
+    uint64_t flags{};
     std::vector< mapColumnType > objects;
     std::vector< std::shared_ptr< MarioBlock > > tools;
     std::vector< std::shared_ptr< MarioBlock > > mods;
@@ -87,7 +87,7 @@ struct GlobalVars {
     std::vector< std::shared_ptr< SDLPP::RenderObject > > tool_boxes;
     std::vector< std::shared_ptr< SDLPP::RenderObject > > mod_boxes;
     std::vector< std::shared_ptr< SDLPP::RenderObject > > character_boxes;
-    enum LandType::Value current_world_type;
+    enum LandType::Value current_world_type{};
     std::shared_ptr< MarioBlock > coin_tool;
     std::shared_ptr< MarioBlock > generic_tool;
     std::shared_ptr< MarioBlock > current_tool;
@@ -151,8 +151,9 @@ void updateTool() {
 }
 
 void removeMario() {
-    if ( !global_vars.mario )
+    if ( !global_vars.mario ) {
         return;
+    }
     global_vars
         .objects[global_vars.mario_pos.getX()][global_vars.mario_pos.getY()]
         .unsetCharacter();
@@ -160,7 +161,7 @@ void removeMario() {
 }
 
 void setToolColor( const std::string &color ) {
-    std::vector< std::shared_ptr< SDLPP::RenderObject > > *store;
+    std::vector< std::shared_ptr< SDLPP::RenderObject > > *store = nullptr;
     int multiplier = 0;
     switch ( global_vars.tool.type ) {
     case ToolType::BLOCK:
@@ -174,13 +175,12 @@ void setToolColor( const std::string &color ) {
     case ToolType::CHARACTER:
         multiplier = CHARACTER_WIDTH;
         store = &global_vars.character_boxes;
-        break;
     default:
-        store = nullptr;
         break;
     }
-    if ( store == nullptr )
+    if ( store == nullptr ) {
         return;
+    }
     auto index = global_vars.tool.index % ( 2 * multiplier );
     store->at( index )->setColor( color );
 }
@@ -216,8 +216,9 @@ void updateToolSelection( int prev_index, ToolType::Value type ) {
     default:
         break;
     }
-    if ( tool_vec == nullptr )
+    if ( tool_vec == nullptr ) {
         return;
+    }
     auto cur = cur_page * multiplier;
     size_t prev = prev_index * multiplier;
     for ( size_t i = prev;
@@ -369,8 +370,9 @@ void selectPrevTool() {
         break;
     }
     int subtraction = 1;
-    if ( global_vars.tool.index % multiplier == 0 )
+    if ( global_vars.tool.index % multiplier == 0 ) {
         subtraction = multiplier + 1;
+    }
     if ( global_vars.tool.index == 0 ||
          global_vars.tool.index - subtraction >
              static_cast< uint64_t >( -multiplier ) ) {
@@ -399,12 +401,15 @@ void selectNextTool() {
     }
     int addition = 1;
     if ( global_vars.tool.index % multiplier ==
-         static_cast< uint64_t >( multiplier - 1 ) )
+         static_cast< uint64_t >( multiplier - 1 ) ) {
         addition = multiplier + 1;
-    if ( global_vars.tool.index == max_index )
+    }
+    if ( global_vars.tool.index == max_index ) {
         return;
-    if ( global_vars.tool.index + addition > max_index )
+    }
+    if ( global_vars.tool.index + addition > max_index ) {
         addition = 1;
+    }
     updateToolIndex( global_vars.tool.index + addition );
 }
 
@@ -566,6 +571,7 @@ void placeTool( SDLPP::Scene &scene ) {
 
     ToolVisitor visitor;
     visitor.setSourceType( global_vars.current_world_type );
+    visitor.setSourceData( global_vars.current_tool->getData() );
     auto tool_type = getBlockRole( global_vars.current_tool->getId() );
     switch ( tool_type ) {
     case BlockRole::TERRAIN:
@@ -578,6 +584,7 @@ void placeTool( SDLPP::Scene &scene ) {
 
     scene.visitCollisions( *global_vars.current_tool, visitor );
     auto &obj = getSelectedObject();
+    std::cout << "Remove? " << (visitor.removeBlock() ? "YES" : "NO") << ", Add?" << (visitor.addBlock() ? "YES" : "NO") << std::endl;
     if ( visitor.removeBlock() && !visitor.addBlock() ) {
         switch ( visitor.getVisitorType() ) {
         case VisitorType::Terrain:
@@ -591,7 +598,7 @@ void placeTool( SDLPP::Scene &scene ) {
         }
     } else if ( visitor.addBlock() ) {
         auto renderer = scene.getRendererShared();
-        int z_index = 1;
+        uint64_t z_index = 1;
         std::shared_ptr< MarioBlock > new_obj = nullptr;
         switch ( visitor.getVisitorType() ) {
         case VisitorType::Terrain:
diff --git a/mario/editor_visitor.cpp b/mario/editor_visitor.cpp
index 7e68774..9f57ab0 100644
--- a/mario/editor_visitor.cpp
+++ b/mario/editor_visitor.cpp
@@ -93,17 +93,17 @@ void ToolVisitor::visit( const SDLPP::RenderObject &obj ) {
     auto id = obj.getCollisions()[0]->getId();
     switch ( id ) {
     case EDITOR_TERRAIN_ID: {
-        const MarioBlock &m_obj = dynamic_cast<const MarioBlock&>(obj);
+        const auto &m_obj = dynamic_cast<const MarioBlock&>(obj);
         remove_block = true;
         if ( obj.getId() == source_id &&
-             m_obj.getType() == source_type &&
-             getVisitorType() == VisitorType::Terrain ) {
+             ((m_obj.getType() == source_type &&
+             getVisitorType() == VisitorType::Terrain) || ( m_obj.getData() == _data && getVisitorType() == VisitorType::Modifier))) {
             add_block = false;
         }
         }
         break;
     case EDITOR_CHARACTER_ID: {
-        const MarioBlock &m_obj = dynamic_cast<const MarioBlock&>(obj);
+        const auto &m_obj = dynamic_cast<const MarioBlock&>(obj);
         remove_block = true;
         if ( obj.getId() == source_id &&
              m_obj.getType() == source_type &&
@@ -115,9 +115,9 @@ void ToolVisitor::visit( const SDLPP::RenderObject &obj ) {
         break;
     }
 }
-bool ToolVisitor::addBlock() {
+bool ToolVisitor::addBlock() const {
     return add_block;
 }
-bool ToolVisitor::removeBlock() {
+bool ToolVisitor::removeBlock() const {
     return remove_block;
 }
diff --git a/mario/editor_visitor.hpp b/mario/editor_visitor.hpp
index 2254823..f2ec758 100644
--- a/mario/editor_visitor.hpp
+++ b/mario/editor_visitor.hpp
@@ -15,34 +15,34 @@ struct VisitorType {
 
 class MouseVisitor : public SDLPP::Visitor {
 public:
-    MouseVisitor() {}
-    virtual void visit( const SDLPP::RenderObject &obj ) override;
-    virtual void setFromId( uint64_t /*UNUSED*/ ) override {}
-    virtual uint64_t getFromId() override {
+    MouseVisitor() = default;
+    void visit( const SDLPP::RenderObject &obj ) override;
+    void setFromId( uint64_t /*UNUSED*/ ) override {}
+    uint64_t getFromId() const override {
         return 0;
     }
-    uint64_t getFlags() {
+    uint64_t getFlags() const {
         return select_flags;
     }
-    bool foundEditBox() {
+    bool foundEditBox() const {
         return edit_box;
     }
-    const SDLPP::Vec2D< int > &getEditBoxIndexes() {
+    const SDLPP::Vec2D< int > &getEditBoxIndexes() const {
         return edit_box_location;
     }
-    bool foundToolBox() {
+    bool foundToolBox() const {
         return tool_box;
     }
-    const SDLPP::Vec2D< int > &getToolBoxIndexes() {
+    const SDLPP::Vec2D< int > &getToolBoxIndexes() const {
         return tool_box_location;
     }
-    virtual void setVisitorType( uint64_t type ) override {
+    void setVisitorType( uint64_t type ) override {
         _type = type;
     }
-    virtual uint64_t getVisitorType() override {
+    uint64_t getVisitorType() const override {
         return _type;
     }
-    uint64_t getToolType() {
+    uint64_t getToolType() const {
         return tool_box_type;
     }
 
@@ -61,38 +61,42 @@ private:
     bool tool_box = false;
     SDLPP::Vec2D< int > edit_box_location = { -1, -1 };
     SDLPP::Vec2D< int > tool_box_location = { -1, -1 };
-    uint64_t _type;
+    uint64_t _type{};
     uint64_t tool_box_type = 0;
 };
 
 class ToolVisitor : public SDLPP::Visitor {
 public:
-    ToolVisitor(){};
-    virtual void visit( const SDLPP::RenderObject &obj ) override;
-    virtual void setFromId( uint64_t id ) override {
+    ToolVisitor() = default;
+    void visit( const SDLPP::RenderObject &obj ) override;
+    void setFromId( uint64_t id ) override {
         source_id = id;
     }
-    virtual uint64_t getFromId() override {
+    uint64_t getFromId() const override {
         return source_id;
     }
-    virtual void setVisitorType( uint64_t type ) override {
+    void setVisitorType( uint64_t type ) override {
         _type = type;
     }
-    virtual uint64_t getVisitorType() override {
+    uint64_t getVisitorType() const override {
         return _type;
     }
     void setSourceType(LandType::Value type) {
         source_type = type;
     }
-    bool addBlock();
-    bool removeBlock();
+    void setSourceData(const uint64_t &data) {
+        _data = data;
+    }
+    bool addBlock() const;
+    bool removeBlock() const;
 
 private:
     bool remove_block = false;
     bool add_block = true;
     uint64_t source_id = 0;
     uint64_t _type = 0;
-    LandType::Value source_type;
+    uint64_t _data = 0;
+    LandType::Value source_type{};
 };
 
 #endif
diff --git a/mario/visitors/bounce_visitor.hpp b/mario/visitors/bounce_visitor.hpp
index 1f5f94e..5a037cb 100644
--- a/mario/visitors/bounce_visitor.hpp
+++ b/mario/visitors/bounce_visitor.hpp
@@ -6,29 +6,29 @@
 
 class BounceVisitor : public SDLPP::Visitor {
 public:
-    BounceVisitor() {}
-    virtual void visit( const SDLPP::RenderObject &obj ) override;
-    virtual void setFromId( uint64_t id ) override {
+    BounceVisitor() = default;
+    void visit( const SDLPP::RenderObject &obj ) override;
+    void setFromId( uint64_t id ) override {
         from = id;
     }
-    virtual uint64_t getFromId() override {
+    uint64_t getFromId() const override {
         return from;
     }
-    virtual void setVisitorType( uint64_t type ) override {
+    void setVisitorType( uint64_t type ) override {
         _type = type;
     }
-    virtual uint64_t getVisitorType() override {
+    uint64_t getVisitorType() const override {
         return _type;
     }
 
-    bool canBounce() {
+    bool canBounce() const {
         return hits < 2;
     }
 
 private:
     int hits = 0;
-    uint64_t from;
-    uint64_t _type;
+    uint64_t from{};
+    uint64_t _type{};
 };
 
 #endif
diff --git a/mario/visitors/mario_visitor.hpp b/mario/visitors/mario_visitor.hpp
index 2affcd4..d6e227e 100644
--- a/mario/visitors/mario_visitor.hpp
+++ b/mario/visitors/mario_visitor.hpp
@@ -9,51 +9,51 @@
 class MarioVisitor : public SDLPP::Visitor {
 public:
     MarioVisitor(bool is_jumping, SDLPP::Scene &scene, bool &quit, int &coin_count) : jumping(is_jumping), _scene(scene), _quit(quit), _coin_count(coin_count) {}
-    virtual void visit( const SDLPP::RenderObject &obj ) override;
-    bool isOnGround() {
+    void visit( const SDLPP::RenderObject &obj ) override;
+    bool isOnGround() const {
         return onGround;
     }
-    bool isDead() {
+    bool isDead() const {
         return death;
     }
-    bool isStopped() {
+    bool isStopped() const {
         return stop;
     }
-    double newXPos() {
+    double newXPos() const {
         return newX;
     }
-    virtual void setFromId( uint64_t id ) override {
+    void setFromId( uint64_t id ) override {
         from = id;
     }
-    virtual uint64_t getFromId() override {
+    uint64_t getFromId() const override {
         return from;
     }
-    virtual void setVisitorType( uint64_t type ) override {
+    void setVisitorType( uint64_t type ) override {
         _type = type;
     }
-    virtual uint64_t getVisitorType() override {
+    uint64_t getVisitorType() const override {
         return _type;
     }
-    bool canGoLeft() {
+    bool canGoLeft() const {
         return !left;
     }
-    bool canGoRight() {
+    bool canGoRight() const {
         return !right;
     }
-    double getGroundY() {
+    double getGroundY() const {
         return groundY;
     }
-    bool topBlock() {
+    bool topBlock() const {
         return top_hit;
     }
-    bool moveTop() {
+    bool moveTop() const {
         return top_left_right && !top_hit;
     }
     const SDLPP::Vec2D<double> &getRightLeftPos() {
         return rightleftpos;
     }
 
-    bool canDestroy() {
+    bool canDestroy() const {
         return jumping && !top_hit;
     }
 
@@ -61,7 +61,7 @@ public:
         return movement_blockage;
     }
 
-    double getStopX() {
+    double getStopX() const {
         return newX;
     }
 
@@ -71,7 +71,7 @@ public:
         _coin_count++;
     }
 
-    bool hasCoin() {
+    bool hasCoin() const {
         return coin;
     }
 
@@ -95,7 +95,7 @@ private:
     double groundY = 0;
     bool death = false;
     bool stop = false;
-    double newX;
+    double newX{};
     uint64_t from = -1;
     bool left = false;
     bool right = false;