diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7bea885..7e1e177 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -102,6 +102,7 @@ add_executable(${PROJECT_NAME}
 	src/movers/moverworld.cpp
 	src/line.cpp
 	src/collider.cpp
+	src/platformset.cpp
 )
 
 target_link_libraries(${PROJECT_NAME}
diff --git a/src/character.hpp b/src/character.hpp
index da31922..97f44a8 100644
--- a/src/character.hpp
+++ b/src/character.hpp
@@ -22,6 +22,7 @@
 
 #include "placeable.hpp"
 #include "drawable.hpp"
+#include "drawableset.hpp"
 #include "vector.hpp"
 #include "sizenotifiable.hpp"
 #include "horzcollisionbar.hpp"
@@ -30,13 +31,14 @@
 #include <memory>
 #include <cstdint>
 #include <functional>
+#include <vector>
 
 namespace cloonel {
 	class SDLMain;
 	class Texture;
 	template <typename T, uint32_t S> class Line;
 
-	class Character : public Placeable, public Drawable {
+	class Character : public Placeable, public Drawable, public DrawableSet {
 	public:
 		typedef std::function<void(const Line<float, 2>&, const float2&)> BounceCallbackType;
 
@@ -54,6 +56,7 @@ namespace cloonel {
 	private:
 		//Overrides
 		virtual void OnRegister ( Mover& parMover, Mover::PlaceableTicketType parParentTicket );
+		virtual void CopyDrawables ( std::vector<const Drawable*>& parOut ) const { parOut.push_back(this); }
 
 		void OnBounce ( const Line<float, 2>& parCollision, const float2& parDirection );
 
diff --git a/src/collider.cpp b/src/collider.cpp
index 5d5bdf0..78439af 100644
--- a/src/collider.cpp
+++ b/src/collider.cpp
@@ -21,6 +21,7 @@
 #include "horzcollisionbar.hpp"
 #include "line.hpp"
 #include "vector.hpp"
+#include "collisionbarset.hpp"
 #include "vectormath.hpp"
 #include <vector>
 #include <ciso646>
@@ -36,7 +37,11 @@ namespace cloonel {
 	namespace {
 		typedef std::vector<const CollisionBar*> CollisionBarListType;
 		typedef std::vector<std::pair<Collider::GroupIDType, CollisionBarListType>> CollisionBarGroupListType;
-		const CollisionBarListType g_empty;
+		typedef std::vector<const CollisionBarSet*> CollisionBarSetListType;
+		typedef std::vector<std::pair<Collider::GroupIDType, CollisionBarSetListType>> CollisionBarSetsListType;
+
+		const CollisionBarListType g_emptyBars;
+		const CollisionBarSetListType g_emptySets;
 
 		///----------------------------------------------------------------------
 		///----------------------------------------------------------------------
@@ -46,8 +51,18 @@ namespace cloonel {
 					return itm.second;
 				}
 			}
-			assert(false);
-			return g_empty;
+			return g_emptyBars;
+		}
+
+		///----------------------------------------------------------------------
+		///----------------------------------------------------------------------
+		const CollisionBarSetListType& findGroup (const CollisionBarSetsListType& parList, Collider::GroupIDType parID) {
+			for (const auto& itm : parList) {
+				if (itm.first == parID) {
+					return itm.second;
+				}
+			}
+			return g_emptySets;
 		}
 
 #if !defined(NDEBUG)
@@ -55,19 +70,27 @@ namespace cloonel {
 		///----------------------------------------------------------------------
 		bool isGroupRegistered (const CollisionBarGroupListType& parList, Collider::GroupIDType parID) {
 			const CollisionBarListType& result = findGroup(parList, parID);
-			return &g_empty != &result;
+			return &g_emptyBars != &result;
+		}
+
+		///----------------------------------------------------------------------
+		///----------------------------------------------------------------------
+		bool isGroupRegistered (const CollisionBarSetsListType& parList, Collider::GroupIDType parID) {
+			const CollisionBarSetListType& result = findGroup(parList, parID);
+			return &g_emptySets != &result;
 		}
 #endif
 
 		///----------------------------------------------------------------------
 		///----------------------------------------------------------------------
-		CollisionBarListType& findOrAddGroup (CollisionBarGroupListType& parList, Collider::GroupIDType parID) {
+		template <typename L>
+		typename L::value_type::second_type& findOrAddGroup (L& parList, Collider::GroupIDType parID) {
 			for (auto& itm : parList) {
 				if (itm.first == parID) {
 					return itm.second;
 				}
 			}
-			parList.push_back(std::make_pair(parID, CollisionBarListType()));
+			parList.push_back(std::make_pair(parID, typename L::value_type::second_type()));
 			assert(parList.back().first == parID);
 			return parList.back().second;
 		}
@@ -127,11 +150,36 @@ namespace cloonel {
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	void Collider::RunCollisionTests (float parDeltaT) const {
+		CollisionBarGroupListType collectedGroups;
+		//For each CollisionBarSet list+ID
+		for (const auto& set : m_collisionBarSets) {
+			//Get or make a list for the currend ID
+			CollisionBarListType& newList = findOrAddGroup(collectedGroups, set.first);
+			//For each CollisionBarSet with the current ID
+			for (auto setObject : set.second) {
+#if !defined(NDEBUG)
+				const size_t oldListSize = newList.size();
+				const CollisionBar* const lastCollisionBar = (oldListSize == 0 ? nullptr : newList.back());
+#endif
+				//Get the collision bars in the current list
+				setObject->CopyBars(newList);
+
+				//Make sure the CollisionBarSet didn't tamper with elements already in the list
+				assert(oldListSize <= newList.size());
+				assert(0 == oldListSize or newList[oldListSize - 1] == lastCollisionBar);
+			}
+		}
+
 		for (const auto& relationship : m_relationships) {
 			const CollisionBarListType& group1 = findGroup(m_collisionBars, relationship.first);
 			const CollisionBarListType& group2 = (relationship.first == relationship.second ? group1 : findGroup(m_collisionBars, relationship.second));
+			const CollisionBarListType& group1a = findGroup(collectedGroups, relationship.first);
+			const CollisionBarListType& group2a = (relationship.first == relationship.second ? group1a : findGroup(collectedGroups, relationship.second));
 
 			collide(parDeltaT, group1, group2);
+			collide(parDeltaT, group1, group2a);
+			collide(parDeltaT, group1a, group2);
+			collide(parDeltaT, group1a, group2a);
 		}
 	}
 
@@ -143,8 +191,8 @@ namespace cloonel {
 #endif
 		assert(m_relationships.end() == std::find(m_relationships.begin(), m_relationships.end(), std::make_pair(parGroup1, parGroup2)));
 		assert(m_relationships.end() == std::find(m_relationships.begin(), m_relationships.end(), std::make_pair(parGroup2, parGroup1)));
-		assert(isGroupRegistered(m_collisionBars, parGroup1));
-		assert(isGroupRegistered(m_collisionBars, parGroup2));
+		assert(isGroupRegistered(m_collisionBars, parGroup1) or isGroupRegistered(m_collisionBarSets, parGroup1));
+		assert(isGroupRegistered(m_collisionBars, parGroup2) or isGroupRegistered(m_collisionBarSets, parGroup2));
 		m_relationships.push_back(std::make_pair(parGroup1, parGroup2));
 	}
 
@@ -175,6 +223,29 @@ namespace cloonel {
 	void Collider::Reset() noexcept {
 		m_relationships.clear();
 		m_collisionBars.clear();
+		m_collisionBarSets.clear();
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void Collider::RegisterBarSet (GroupIDType parGroup, const CollisionBarSet* parSet) {
+#if defined(VERBOSE_COLLIDER)
+		std::cout << "Collider: Registering bar set " << parSet << " in group " << parGroup << "\n";
+#endif
+		CollisionBarSetListType& group = findOrAddGroup(m_collisionBarSets, parGroup);
+		assert(isGroupRegistered(m_collisionBarSets, parGroup));
+		assert(parSet);
+		group.push_back(parSet);
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void Collider::UnregisterBarSet (GroupIDType parGroup, const CollisionBarSet* parSet) {
+		assert(isGroupRegistered(m_collisionBarSets, parGroup));
+		CollisionBarSetListType& group = findOrAddGroup(m_collisionBarSets, parGroup);
+		auto itdele = std::find(group.begin(), group.end(), parSet);
+		assert(itdele != group.end());
+		group.erase(itdele);
 	}
 } //namespace cloonel
 
diff --git a/src/collider.hpp b/src/collider.hpp
index 2414efa..577d877 100644
--- a/src/collider.hpp
+++ b/src/collider.hpp
@@ -27,6 +27,7 @@
 
 namespace cloonel {
 	class HorzCollisionBar;
+	class CollisionBarSet;
 
 	typedef HorzCollisionBar CollisionBar;
 
@@ -41,14 +42,18 @@ namespace cloonel {
 		void TieGroups ( GroupIDType parGroup1, GroupIDType parGroup2 );
 		void RegisterBar ( GroupIDType parGroup, const CollisionBar* parBar );
 		void UnregisterBar ( GroupIDType parGroup, const CollisionBar* parBar );
+		void RegisterBarSet ( GroupIDType parGroup, const CollisionBarSet* parSet );
+		void UnregisterBarSet ( GroupIDType parGroup, const CollisionBarSet* parSet );
 		void Reset ( void ) noexcept;
 
 	private:
 		typedef std::vector<std::pair<GroupIDType, std::vector<const CollisionBar*>>> CollisionBarGroupListType;
+		typedef std::vector<std::pair<GroupIDType, std::vector<const CollisionBarSet*>>> CollisionBarSetsListType;
 		typedef std::vector<std::pair<GroupIDType, GroupIDType>> RelationshipListType;
 
 		RelationshipListType m_relationships;
 		CollisionBarGroupListType m_collisionBars;
+		CollisionBarSetsListType m_collisionBarSets;
 	};
 } //namespace cloonel
 
diff --git a/src/collisionbarset.hpp b/src/collisionbarset.hpp
new file mode 100644
index 0000000..563d6ed
--- /dev/null
+++ b/src/collisionbarset.hpp
@@ -0,0 +1,35 @@
+/*
+	Copyright 2014 Michele "King_DuckZ" Santullo
+
+	This file is part of CloonelJump.
+
+	CloonelJump is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	CloonelJump is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with CloonelJump.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#ifndef id0632E9698575456ABDB19F9BB0AFE492
+#define id0632E9698575456ABDB19F9BB0AFE492
+
+#include <vector>
+
+namespace cloonel {
+	class HorzCollisionBar;
+
+	class CollisionBarSet {
+	public:
+		virtual void CopyBars ( std::vector<const HorzCollisionBar*>& parOut ) const = 0;
+	};
+} //namespace cloonel
+
+#endif
diff --git a/src/drawableset.hpp b/src/drawableset.hpp
new file mode 100644
index 0000000..975169e
--- /dev/null
+++ b/src/drawableset.hpp
@@ -0,0 +1,35 @@
+/*
+	Copyright 2014 Michele "King_DuckZ" Santullo
+
+	This file is part of CloonelJump.
+
+	CloonelJump is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	CloonelJump is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with CloonelJump.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#ifndef idBFBF4D5B34DD49E68B89249AA1D8FCE4
+#define idBFBF4D5B34DD49E68B89249AA1D8FCE4
+
+#include <vector>
+
+namespace cloonel {
+	class Drawable;
+
+	class DrawableSet {
+	public:
+		virtual void CopyDrawables ( std::vector<const Drawable*>& parOut ) const = 0;
+	};
+} //namespace cloonel
+
+#endif
diff --git a/src/gameplayscene.cpp b/src/gameplayscene.cpp
index 0e03736..2b48d56 100644
--- a/src/gameplayscene.cpp
+++ b/src/gameplayscene.cpp
@@ -20,6 +20,7 @@
 #include "gameplayscene.hpp"
 #include "mover.hpp"
 #include "drawable.hpp"
+#include "drawableset.hpp"
 #include "placeable.hpp"
 #include <unordered_set>
 
@@ -53,8 +54,13 @@ namespace cloonel {
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	void GameplayScene::OnRender() {
-		for (auto itDrawable : m_drawables) {
-			itDrawable->Draw();
+		std::vector<const Drawable*> drawables;
+		for (auto drawableSet : m_drawableSets) {
+			drawables.clear();
+			drawableSet->CopyDrawables(drawables);
+			for (auto drawable : drawables) {
+				drawable->Draw();
+			}
 		}
 	}
 
diff --git a/src/gameplayscene.hpp b/src/gameplayscene.hpp
index 0c7a26b..b4a7d38 100644
--- a/src/gameplayscene.hpp
+++ b/src/gameplayscene.hpp
@@ -27,7 +27,7 @@
 
 namespace cloonel {
 	class Mover;
-	class Drawable;
+	class DrawableSet;
 
 	class GameplayScene : public GameBase {
 	public:
@@ -35,7 +35,7 @@ namespace cloonel {
 		virtual ~GameplayScene ( void ) noexcept = default;
 
 		void AddMover ( Mover* parMover ) { assert(parMover); m_movers.push_back(parMover); }
-		void AddDrawable ( const Drawable* parDrawable ) { assert(parDrawable); m_drawables.push_back(parDrawable); }
+		void AddDrawableSet ( const DrawableSet* parSet ) { assert(parSet); m_drawableSets.push_back(parSet); }
 
 		virtual void Destroy ( void ) noexcept;
 
@@ -49,7 +49,7 @@ namespace cloonel {
 
 		Collider m_collider;
 		std::vector<Mover*> m_movers;
-		std::vector<const Drawable*> m_drawables;
+		std::vector<const DrawableSet*> m_drawableSets;
 	};
 } //namespace cloonel
 
diff --git a/src/gameplaysceneclassic.cpp b/src/gameplaysceneclassic.cpp
index 93f48b3..54fd89a 100644
--- a/src/gameplaysceneclassic.cpp
+++ b/src/gameplaysceneclassic.cpp
@@ -96,11 +96,8 @@ namespace cloonel {
 		{
 			auto regPlayerCollision(std::bind(&Collider::RegisterBar, &collider, CollisionID_Player, std::placeholders::_1));
 			player->RegisterForCollision(regPlayerCollision);
-
-			auto regPlatfCollision(std::bind(&Collider::RegisterBar, &collider, CollisionID_Platforms, std::placeholders::_1));
-			auto unregPlatfCollision(std::bind(&Collider::UnregisterBar, &collider, CollisionID_Platforms, std::placeholders::_1));
-			platforms->RegisterForCollision(regPlatfCollision, unregPlatfCollision);
 		}
+		platforms->RegisterForCollision(collider, CollisionID_Platforms);
 
 		player->SetOnBounceCallback(std::bind(&OnCharacterBounce, moverSine.get(), std::placeholders::_1, std::placeholders::_2));
 
@@ -113,10 +110,10 @@ namespace cloonel {
 
 		AddMover(m_moverSine.get());
 		AddMover(m_moverLeftRight.get());
-		AddDrawable(m_wallpaper.get());
+		AddDrawableSet(m_wallpaper.get());
 		AddMover(m_moverWorld.get());
-		m_platforms->AddDrawables();
-		AddDrawable(m_player.get());
+		AddDrawableSet(m_platforms->GetDrawableSet());
+		AddDrawableSet(m_player.get());
 
 		const float jumpPower = halfRefHeight * 0.71f;
 		m_moverSine->SetPower(jumpPower);
diff --git a/src/platform.hpp b/src/platform.hpp
index a9b8619..fc52d5d 100644
--- a/src/platform.hpp
+++ b/src/platform.hpp
@@ -41,6 +41,7 @@ namespace cloonel {
 
 		float2 TopLeft ( void ) const { return GetPos(); }
 		float2 BottomRight ( void ) const { return TopLeft() + m_size; }
+		const HorzCollisionBar* TopCollisionBar ( void ) const { return m_collisionTop.get(); }
 
 		void RegisterForCollision ( ColliderRegisterFunc parReg );
 
diff --git a/src/platformset.cpp b/src/platformset.cpp
new file mode 100644
index 0000000..76887d1
--- /dev/null
+++ b/src/platformset.cpp
@@ -0,0 +1,100 @@
+/*
+	Copyright 2014 Michele "King_DuckZ" Santullo
+
+	This file is part of CloonelJump.
+
+	CloonelJump is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	CloonelJump is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with CloonelJump.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "platformset.hpp"
+#include "platform.hpp"
+#include "CloonelJumpConfig.h"
+#include <ciso646>
+#include <algorithm>
+#include <cassert>
+#include <memory>
+#include <functional>
+#include <algorithm>
+
+namespace cloonel {
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	PlatformSet::PlatformSet (SDLMain* parSdl) :
+		m_platforms(MAX_PLATFORMS_ON_SCREEN),
+		m_sdlmain(parSdl)
+	{
+		assert(m_sdlmain);
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	PlatformSet::~PlatformSet() noexcept {
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void PlatformSet::Add (const float2& parPos, const float2& parSize, Texture* parTexture) {
+		m_platforms.push_back(Platform(m_sdlmain, parPos, parTexture, parSize));
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void PlatformSet::CopyBars (std::vector<const HorzCollisionBar*>& parOut) const {
+		parOut.reserve(parOut.size() + m_platforms.size());
+		for (auto& platf : m_platforms) {
+			parOut.push_back(platf.TopCollisionBar());
+		}
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void PlatformSet::CopyDrawables (std::vector<const Drawable*>& parOut) const {
+		parOut.reserve(parOut.size() + m_platforms.size());
+		for (auto& platf : m_platforms) {
+			parOut.push_back(&platf);
+		}
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	size_t PlatformSet::CountFreePlatforms() const {
+		size_t freePlatforms = 0;
+		for (const auto& platf : m_platforms) {
+			if (platf.GetPos().y() < 0.0f)
+				++freePlatforms;
+			else
+				break;
+		}
+		return MAX_PLATFORMS_ON_SCREEN - m_platforms.size() + freePlatforms;
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void PlatformSet::clear() noexcept {
+		m_platforms.clear();
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void PlatformSet::SendBeginMovement() noexcept {
+		std::for_each(m_platforms.begin(), m_platforms.end(), std::bind(&Platform::BeginMovement, std::placeholders::_1));
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void PlatformSet::SendAddOffset (const float2& parOffset) noexcept {
+		std::for_each(m_platforms.begin(), m_platforms.end(), std::bind(&Platform::AddOffset, std::placeholders::_1, parOffset));
+	}
+} //namespace cloonel
diff --git a/src/platformset.hpp b/src/platformset.hpp
new file mode 100644
index 0000000..ca13553
--- /dev/null
+++ b/src/platformset.hpp
@@ -0,0 +1,62 @@
+/*
+	Copyright 2014 Michele "King_DuckZ" Santullo
+
+	This file is part of CloonelJump.
+
+	CloonelJump is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	CloonelJump is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with CloonelJump.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#ifndef idB56C30EE09454EA2864FA6D1607131D5
+#define idB56C30EE09454EA2864FA6D1607131D5
+
+#include "collisionbarset.hpp"
+#include "drawableset.hpp"
+#include "movers/mover.hpp"
+#include <list>
+#include <boost/circular_buffer.hpp>
+
+namespace cloonel {
+	class SDLMain;
+	class Platform;
+	class Texture;
+
+	class PlatformSet : public CollisionBarSet, public DrawableSet {
+	public:
+		PlatformSet ( SDLMain* parSdl );
+		PlatformSet ( const PlatformSet& ) = delete;
+		~PlatformSet ( void ) noexcept;
+		PlatformSet& operator= ( const PlatformSet& ) = delete;
+
+		void Add ( const float2& parPos, const float2& parSize, Texture* parTexture );
+		size_t CountFreePlatforms ( void ) const;
+		void SendBeginMovement ( void ) noexcept;
+		void SendAddOffset ( const float2& parOffset ) noexcept;
+
+		size_t size ( void ) const { return m_platforms.size(); }
+		bool empty ( void ) const { return m_platforms.empty(); }
+		void clear ( void ) noexcept;
+		const Platform& back ( void ) { return m_platforms.back(); }
+
+	private:
+		//Overrides
+		virtual void CopyBars ( std::vector<const HorzCollisionBar*>& parOut ) const;
+		virtual void CopyDrawables ( std::vector<const Drawable*>& parOut ) const;
+
+		boost::circular_buffer<Platform> m_platforms;
+		SDLMain* const m_sdlmain;
+	};
+} //namespace cloonel
+
+#endif
diff --git a/src/platformsystem.cpp b/src/platformsystem.cpp
index c76b15d..576ce42 100644
--- a/src/platformsystem.cpp
+++ b/src/platformsystem.cpp
@@ -24,13 +24,14 @@
 #include "gameplayscene.hpp"
 #include "mover.hpp"
 #include "collider.hpp"
+#include "platformset.hpp"
 #include <ciso646>
 #include <cstdlib>
 #include <cassert>
 #include <algorithm>
 #include <boost/noncopyable.hpp>
-#include <boost/circular_buffer.hpp>
 #include <boost/algorithm/clamp.hpp>
+#include <list>
 
 namespace cloonel {
 	namespace {
@@ -60,42 +61,13 @@ namespace cloonel {
 		}
 	} //unnamed namespace
 
-	struct PlatformInfo {
-		PlatformInfo ( void ) :
-			platform(nullptr),
-			ticket(0)
-		{
-		}
-		PlatformInfo ( const PlatformInfo& ) = delete;
-		PlatformInfo ( Platform&& parPlatf ) noexcept :
-			platform(new Platform(std::move(parPlatf))),
-			ticket(0)
-		{
-		}
-		PlatformInfo ( PlatformInfo&& parOther ) noexcept :
-			platform(std::move(parOther.platform)),
-			ticket(parOther.ticket)
-		{
-		}
-		~PlatformInfo ( void ) noexcept = default;
-		PlatformInfo& operator= ( const PlatformInfo& ) = delete;
-		PlatformInfo& operator= ( PlatformInfo&& parOther ) {
-			platform.swap(parOther.platform);
-			std::swap(ticket, parOther.ticket);
-			return *this;
-		}
-
-		std::unique_ptr<Platform> platform;
-		Mover::PlaceableTicketType ticket;
-	};
-
 	struct PlatformSystem::LocalData : public boost::noncopyable {
 		LocalData ( const char* parTexturePath, SDLMain* parSDLMain, GameplayScene* parScene, float parMaxDistance );
 		~LocalData ( void ) noexcept = default;
 
-		boost::circular_buffer<PlatformInfo> platforms;
+		PlatformSet platforms;
 		Texture texture;
-		SDLMain* const sdlmain;
+		std::list<std::pair<Collider::GroupIDType, Collider*>> registeredTo;
 		GameplayScene* const scene;
 		const float maxDistance;
 	};
@@ -103,9 +75,8 @@ namespace cloonel {
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	PlatformSystem::LocalData::LocalData (const char* parTexturePath, SDLMain* parSDLMain, GameplayScene* parScene, float parMaxDistance) :
-		platforms(MAX_PLATFORMS_ON_SCREEN),
+		platforms(parSDLMain),
 		texture(parTexturePath, parSDLMain, false),
-		sdlmain(parSDLMain),
 		scene(parScene),
 		maxDistance(parMaxDistance)
 	{
@@ -129,26 +100,23 @@ namespace cloonel {
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	void PlatformSystem::SpawnPlatforms() {
-		const size_t totalPlatf = MAX_PLATFORMS_ON_SCREEN;
 		const float2 platfWH(static_cast<float>(g_platfWidth), static_cast<float>(g_platfHeight));
 
-		size_t freePlatforms = 0;
-		for (size_t z = 0; z < m_localdata->platforms.size(); ++z) {
-			if (m_localdata->platforms[z].platform->GetPos().y() < 0.0f)
-				++freePlatforms;
-			else
-				break;
-		}
-		freePlatforms = totalPlatf - m_localdata->platforms.size() + freePlatforms;
-
-		float prevPlatf = (m_localdata->platforms.empty() ? 0.0f : m_localdata->platforms.back().platform->GetPos().y() + GetPos().y());
+		size_t freePlatforms = m_localdata->platforms.CountFreePlatforms();
+		float prevPlatf = (m_localdata->platforms.empty() ? 0.0f : m_localdata->platforms.back().GetPos().y() + GetPos().y());
+		//FIXME: platform's height shouldn't grow unbounded, they should have the
+		//screen-relative position only. Change the movers as appropriate.
+		//std::cout << "Top platform is at index " << m_localdata->platforms.size() - 1 << ", prevPlatf = " << prevPlatf << " ";
+		//if (not m_localdata->platforms.empty()) {
+			//std::cout << "top pos is " << m_localdata->platforms.back().platform->GetPos() << ", system's pos is " << GetPos() << "\n";
+		//}
 		while (static_cast<float>(REFERENCE_HEIGHT) - prevPlatf >= m_targetAverage) {
 			assert(freePlatforms > 0);
 			const auto newPos(PositionForNewPlatf(prevPlatf, m_targetAverage, m_localdata->maxDistance, freePlatforms));
 			--freePlatforms;
 			prevPlatf = newPos.y();
 
-			m_localdata->platforms.push_back(Platform(m_localdata->sdlmain, newPos, &m_localdata->texture, platfWH));
+			m_localdata->platforms.Add(newPos, platfWH, &m_localdata->texture);
 		}
 	}
 
@@ -162,41 +130,45 @@ namespace cloonel {
 		this->SpawnPlatforms();
 	}
 
-	///--------------------------------------------------------------------------
-	///--------------------------------------------------------------------------
-	void PlatformSystem::RegisterForCollision (ColliderRegisterFunc parReg, ColliderUnregisterFunc parUnreg) {
-		m_registerToCollider = parReg;
-		m_unregisterFromCollider = parUnreg;
-
-		for (auto& platf : m_localdata->platforms) {
-			platf.platform->RegisterForCollision(m_registerToCollider);
-		}
-	}
-
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	void PlatformSystem::Destroy() noexcept {
 		m_localdata->texture.Destroy();
+		for (const auto& unregPair : m_localdata->registeredTo) {
+			unregPair.second->UnregisterBarSet(unregPair.first, &m_localdata->platforms);
+		}
+		m_localdata->registeredTo.clear();
 
 		m_localdata->platforms.clear();
 	}
 
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
-	void PlatformSystem::AddDrawables() {
-		for (size_t z = 0; z < m_localdata->platforms.size(); ++z) {
-			PlatformInfo& newPlatf = m_localdata->platforms[z];
-			m_localdata->scene->AddDrawable(newPlatf.platform.get());
-			newPlatf.ticket = Mover::NullTicket;
-		}
+	void PlatformSystem::BeginMovement() {
+		m_localdata->platforms.SendBeginMovement();
 	}
 
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
-	void PlatformSystem::OnRegister (Mover& parMover, Mover::PlaceableTicketType parTicket) {
-		for (size_t z = 0; z < m_localdata->platforms.size(); ++z) {
-			assert(m_localdata->platforms[z].platform != nullptr);
-			m_localdata->platforms[z].ticket = parMover.RegisterPlaceable(m_localdata->platforms[z].platform.get(), parTicket);
-		}
+	void PlatformSystem::AddOffset (const float2& parOffset) noexcept {
+		m_localdata->platforms.SendAddOffset(parOffset);
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void PlatformSystem::SetAbsolutePosition (const float2&) noexcept {
+		assert(false);
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void PlatformSystem::RegisterForCollision (Collider& parCollider, Collider::GroupIDType parGroupID) {
+		parCollider.RegisterBarSet(parGroupID, &m_localdata->platforms);
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	const DrawableSet* PlatformSystem::GetDrawableSet() const {
+		return &m_localdata->platforms;
 	}
 } //namespace cloonel
diff --git a/src/platformsystem.hpp b/src/platformsystem.hpp
index 5002812..6e5e620 100644
--- a/src/platformsystem.hpp
+++ b/src/platformsystem.hpp
@@ -21,12 +21,13 @@
 
 #include "placeable.hpp"
 #include "collidertypedef.hpp"
+#include "collider.hpp"
 #include <memory>
 
 namespace cloonel {
 	class SDLMain;
 	class GameplayScene;
-	class Collider;
+	class DrawableSet;
 
 	class PlatformSystem : public Placeable {
 	public:
@@ -34,24 +35,24 @@ namespace cloonel {
 		PlatformSystem ( const char* parTexturePath, SDLMain* parSDLMain, GameplayScene* parScene, float parMaxDistance );
 		PlatformSystem ( const PlatformSystem& ) = delete;
 		PlatformSystem ( PlatformSystem&& parOther ) = delete;
-		~PlatformSystem ( void ) noexcept;
+		virtual ~PlatformSystem ( void ) noexcept;
 		PlatformSystem& operator= ( const PlatformSystem& ) = delete;
 
 		void Prepare ( void );
-		void RegisterForCollision ( ColliderRegisterFunc parReg, ColliderUnregisterFunc parUnreg );
-		void AddDrawables ( void );
 		void Destroy ( void ) noexcept;
 		void SpawnPlatforms ( void );
-
-		//Overrides
-		virtual void OnRegister ( Mover& parOut, Mover::PlaceableTicketType parTicket );
+		void RegisterForCollision ( Collider& parCollider, Collider::GroupIDType parGroupID );
+		const DrawableSet* GetDrawableSet ( void ) const;
 
 	private:
 		struct LocalData;
 
+		//Overrides
+		virtual void BeginMovement ( void );
+		virtual void AddOffset ( const float2& parOffset ) noexcept;
+		virtual void SetAbsolutePosition ( const float2& ) noexcept;
+
 		const std::unique_ptr<LocalData> m_localdata;
-		ColliderRegisterFunc m_registerToCollider;
-		ColliderUnregisterFunc m_unregisterFromCollider;
 		float m_targetAverage;
 	};
 } //namespace cloonel
diff --git a/src/tiledwallpaper.hpp b/src/tiledwallpaper.hpp
index 4ba4b6d..be2b9e5 100644
--- a/src/tiledwallpaper.hpp
+++ b/src/tiledwallpaper.hpp
@@ -22,20 +22,25 @@
 
 #include "drawable.hpp"
 #include "sizenotifiable.hpp"
+#include "drawableset.hpp"
 #include <memory>
+#include <vector>
 
 namespace cloonel {
 	class Texture;
 	class SDLMain;
 
-	class TiledWallpaper : public Drawable {
+	class TiledWallpaper : public Drawable, public DrawableSet {
 	public:
 		TiledWallpaper ( const std::string&& parPath, SDLMain* parMain );
 		virtual ~TiledWallpaper ( void ) noexcept;
 
 		void Reload ( void );
 		void Destroy ( void ) noexcept;
+
+		//Overrides
 		virtual void Draw ( void ) const;
+		virtual void CopyDrawables ( std::vector<const Drawable*>& parOut ) const { parOut.push_back(this); }
 
 	private:
 		class TileCountNotifiable : public SizeNotifiable<regbehaviours::AutoRegister> {