diff --git a/src/definition/BaseDefinition.cpp b/src/definition/BaseDefinition.cpp
index d3672a8..cc5b823 100644
--- a/src/definition/BaseDefinition.cpp
+++ b/src/definition/BaseDefinition.cpp
@@ -22,21 +22,14 @@ BaseDefinition::~BaseDefinition()
     }
 }
 
-void BaseDefinition::addChild(BaseDefinition* child)
+void BaseDefinition::setName(QString name)
 {
-    if (not children.contains(child))
-    {
-        children.append(child);
-    }
-}
-
-void BaseDefinition::removeChild(BaseDefinition* child)
-{
-    children.removeOne(child);
+    this->name = name;
 }
 
 void BaseDefinition::save(PackStream* pack)
 {
+    pack->write(name);
     QListIterator<BaseDefinition*> it(children);
     while (it.hasNext())
     {
@@ -46,9 +39,39 @@ void BaseDefinition::save(PackStream* pack)
 
 void BaseDefinition::load(PackStream* pack)
 {
+    name = pack->readString();
     QListIterator<BaseDefinition*> it(children);
     while (it.hasNext())
     {
         it.next()->load(pack);
     }
 }
+
+void BaseDefinition::copy(BaseDefinition* destination)
+{
+    // TODO
+}
+
+void BaseDefinition::validate()
+{
+    QListIterator<BaseDefinition*> it(children);
+    while (it.hasNext())
+    {
+        it.next()->validate();
+    }
+}
+
+void BaseDefinition::addChild(BaseDefinition* child)
+{
+    if (not children.contains(child))
+    {
+        children.append(child);
+        child->parent = this;
+        child->root = this->root;
+    }
+}
+
+void BaseDefinition::removeChild(BaseDefinition* child)
+{
+    children.removeOne(child);
+}
diff --git a/src/definition/BaseDefinition.h b/src/definition/BaseDefinition.h
index e38dc68..e97d892 100644
--- a/src/definition/BaseDefinition.h
+++ b/src/definition/BaseDefinition.h
@@ -4,6 +4,7 @@
 #include "definition_global.h"
 
 #include <QList>
+#include <QString>
 #include "PackStream.h" // TODO Delete when c++ migration is done
 
 namespace paysages {
@@ -21,6 +22,12 @@ public:
     virtual void save(PackStream* pack);
     virtual void load(PackStream* pack);
 
+    virtual void copy(BaseDefinition* destination);
+    virtual void validate();
+
+    inline const QString& getName() {return name;}
+    void setName(QString name);
+
 protected:
     void addChild(BaseDefinition* child);
     void removeChild(BaseDefinition* child);
@@ -28,6 +35,7 @@ protected:
 private:
     BaseDefinition* parent;
     BaseDefinition* root;
+    QString name;
     QList<BaseDefinition*> children;
 };
 
diff --git a/src/definition/Layers.cpp b/src/definition/Layers.cpp
new file mode 100644
index 0000000..d7db0bd
--- /dev/null
+++ b/src/definition/Layers.cpp
@@ -0,0 +1,220 @@
+#include "Layers.h"
+
+Layers::Layers(BaseDefinition* parent, LayerConstructor layer_constructor, LayerType* legacy_type):
+    BaseDefinition(parent), layer_constructor(layer_constructor)
+{
+    if (legacy_type)
+    {
+        this->legacy_type = *legacy_type;
+    }
+    max_layer_count = 100;
+    null_layer = layer_constructor(this);
+}
+
+Layers::~Layers()
+{
+    clear();
+    delete null_layer;
+}
+
+void Layers::copy(Layers* destination)
+{
+    // don't call overridden method, it will copy again the children
+    // FIXME ... but the definition name (and other future attributes) is not copied
+
+    destination->clear();
+
+    destination->max_layer_count = max_layer_count;
+    destination->legacy_type = legacy_type;
+
+    null_layer->copy(destination->null_layer);
+
+    QListIterator<BaseDefinition*> it(layers);
+    while (it.hasNext())
+    {
+        int position = destination->addLayer();
+        BaseDefinition* new_layer = destination->getLayer(position);
+        it.next()->copy(new_layer);
+    }
+}
+
+void Layers::setMaxLayerCount(int max_layer_count)
+{
+    this->max_layer_count = max_layer_count;
+    // TODO Delete overlimit layers ?
+}
+
+int Layers::count()
+{
+    return layers.count();
+}
+
+BaseDefinition* Layers::getLayer(int position)
+{
+    if (position >= 0 and position < layers.size())
+    {
+        return layers[position];
+    }
+    else
+    {
+        qWarning("Asked for a undefined layer %d on a total of %d", position, layers.size());
+        return null_layer;
+    }
+}
+
+int Layers::findLayer(BaseDefinition* layer)
+{
+    int result = layers.indexOf(layer);
+    if (result < 0)
+    {
+        qWarning("Layer %p not found, on a total of %d, returning %d", layer, layers.size(), result);
+    }
+    return result;
+}
+
+int Layers::addLayer(BaseDefinition* layer)
+{
+    if (layers.size() < max_layer_count)
+    {
+        layers.append(layer);
+        addChild(layer);
+        return layers.size() - 1;
+    }
+    else
+    {
+        qWarning("Add layer ignored because limit of %d reached", max_layer_count);
+        return -1;
+    }
+}
+
+int Layers::addLayer()
+{
+    return addLayer(layer_constructor(this));
+}
+
+void Layers::removeLayer(int position)
+{
+    if (position >= 0 and position < layers.size())
+    {
+        BaseDefinition* removed = layers.takeAt(position);
+        removeChild(removed);
+        delete removed;
+    }
+}
+
+void Layers::removeLayer(BaseDefinition* layer)
+{
+    removeLayer(findLayer(layer));
+}
+
+void Layers::moveLayer(int old_position, int new_position)
+{
+    // TODO
+}
+
+void Layers::moveLayer(BaseDefinition* layer, int new_position)
+{
+    moveLayer(findLayer(layer), new_position);
+}
+
+void Layers::clear()
+{
+    while (layers.size() > 0)
+    {
+        removeLayer(0);
+    }
+}
+
+// Transitional C-API
+
+BaseDefinition* _legacyLayerConstructor(Layers* layers)
+{
+    return new LegacyLayer(layers, &layers->legacy_type);
+}
+
+Layers* layersCreate(LayerType type, int max_layer_count)
+{
+    Layers* result = new Layers(NULL, _legacyLayerConstructor, &type);
+    result->setMaxLayerCount(max_layer_count);
+    return result;
+}
+
+Layers* layersCreateCopy(Layers* original)
+{
+    Layers* result = new Layers(NULL, _legacyLayerConstructor, &original->legacy_type);
+    original->copy(result);
+    return result;
+}
+
+void layersDelete(Layers* layers)
+{
+    delete layers;
+}
+
+void layersCopy(Layers* source, Layers* destination)
+{
+    source->copy(destination);
+}
+
+void layersValidate(Layers* layers)
+{
+    layers->validate();
+}
+
+void layersSave(PackStream* stream, Layers* layers)
+{
+    layers->save(stream);
+}
+
+void layersLoad(PackStream* stream, Layers* layers)
+{
+    layers->load(stream);
+}
+
+const char* layersGetName(Layers* layers, int layer)
+{
+    return "TODO";
+}
+
+void layersSetName(Layers* layers, int layer, const char* name)
+{
+    layers->getLayer(layer)->setName(name);
+}
+
+void layersClear(Layers* layers)
+{
+    layers->clear();
+}
+
+int layersCount(Layers* layers)
+{
+    return layers->count();
+}
+
+void* layersGetLayer(Layers* layers, int layer)
+{
+    LegacyLayer* legacy = (LegacyLayer*)(layers->getLayer(layer));
+    return legacy->getLegacyDefinition();
+}
+
+int layersAddLayer(Layers* layers, void* definition)
+{
+    int position;
+    LegacyLayer* legacy = new LegacyLayer(layers, &layers->legacy_type);
+    if (definition)
+    {
+        layers->legacy_type.callback_copy(definition, legacy->getLegacyDefinition());
+    }
+    position = layers->addLayer(legacy);
+    return position;
+}
+
+void layersDeleteLayer(Layers* layers, int layer)
+{
+    layers->removeLayer(layer);
+}
+
+void layersMove(Layers* layers, int layer, int new_position)
+{
+    layers->moveLayer(layer, new_position);
+}
diff --git a/src/definition/Layers.h b/src/definition/Layers.h
new file mode 100644
index 0000000..3f08496
--- /dev/null
+++ b/src/definition/Layers.h
@@ -0,0 +1,98 @@
+#ifndef LAYERS_H
+#define LAYERS_H
+
+#include "definition_global.h"
+
+#include "PackStream.h"
+#include "LegacyLayer.h"
+
+#ifdef __cplusplus
+
+#include "BaseDefinition.h"
+
+namespace paysages {
+namespace definition {
+
+class Layers;
+
+typedef BaseDefinition* (*LayerConstructor)(Layers* parent);
+
+/**
+ * @brief Layers of definitions, ideally all of the same type.
+ */
+class DEFINITIONSHARED_EXPORT Layers:public BaseDefinition
+{
+public:
+    Layers(BaseDefinition* parent, LayerConstructor layer_constructor, LayerType* legacy_type=0);
+    virtual ~Layers();
+
+    virtual void copy(Layers* destination);
+
+    void setMaxLayerCount(int max_layer_count);
+
+    int count();
+    BaseDefinition* getLayer(int position);
+    int findLayer(BaseDefinition* layer);
+
+    /**
+     * @brief Add a new layer
+     *
+     * This method takes ownership of the layer definition. In any case, it will be deleted by
+     * this object (even if the layer could not be added).
+     * @return The position of the new layer, -1 if it couldn't be added.
+     */
+    int addLayer(BaseDefinition* layer);
+    int addLayer();
+    void removeLayer(int position);
+    void removeLayer(BaseDefinition* layer);
+    void moveLayer(int old_position, int new_position);
+    void moveLayer(BaseDefinition* layer, int new_position);
+    void clear();
+
+    // Transitional data storage
+    LayerType legacy_type;
+
+private:
+    LayerConstructor layer_constructor;
+    int max_layer_count;
+    QList<BaseDefinition*> layers;
+    BaseDefinition* null_layer;
+};
+
+}
+}
+
+extern "C" {
+#endif
+
+// Transitional C-API
+
+#ifndef __cplusplus
+typedef struct Layers Layers;
+#endif
+
+DEFINITIONSHARED_EXPORT Layers* layersCreate(LayerType type, int max_layer_count);
+DEFINITIONSHARED_EXPORT Layers* layersCreateCopy(Layers* original);
+DEFINITIONSHARED_EXPORT void layersDelete(Layers* layers);
+
+DEFINITIONSHARED_EXPORT void layersCopy(Layers* source, Layers* destination);
+DEFINITIONSHARED_EXPORT void layersValidate(Layers* layers);
+
+DEFINITIONSHARED_EXPORT void layersSave(PackStream* stream, Layers* layers);
+DEFINITIONSHARED_EXPORT void layersLoad(PackStream* stream, Layers* layers);
+
+DEFINITIONSHARED_EXPORT const char* layersGetName(Layers* layers, int layer);
+DEFINITIONSHARED_EXPORT void layersSetName(Layers* layers, int layer, const char* name);
+
+DEFINITIONSHARED_EXPORT void layersClear(Layers* layers);
+DEFINITIONSHARED_EXPORT int layersCount(Layers* layers);
+DEFINITIONSHARED_EXPORT void* layersGetLayer(Layers* layers, int layer);
+DEFINITIONSHARED_EXPORT int layersAddLayer(Layers* layers, void* definition);
+DEFINITIONSHARED_EXPORT void layersDeleteLayer(Layers* layers, int layer);
+DEFINITIONSHARED_EXPORT void layersMove(Layers* layers, int layer, int new_position);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // LAYERS_H
diff --git a/src/definition/LegacyLayer.cpp b/src/definition/LegacyLayer.cpp
new file mode 100644
index 0000000..ce9fc2d
--- /dev/null
+++ b/src/definition/LegacyLayer.cpp
@@ -0,0 +1,32 @@
+#include "LegacyLayer.h"
+
+LegacyLayer::LegacyLayer(BaseDefinition* parent, LayerType* type):
+    BaseDefinition(parent), type(*type)
+{
+    legacy = type->callback_create();
+}
+
+LegacyLayer::~LegacyLayer()
+{
+    type.callback_delete(legacy);
+}
+
+void LegacyLayer::save(PackStream* pack)
+{
+    type.callback_save(pack, legacy);
+}
+
+void LegacyLayer::load(PackStream* pack)
+{
+    type.callback_load(pack, legacy);
+}
+
+void LegacyLayer::copy(LegacyLayer* destination)
+{
+    type.callback_copy(legacy, destination->legacy);
+}
+
+void LegacyLayer::validate()
+{
+    type.callback_validate(legacy);
+}
diff --git a/src/definition/LegacyLayer.h b/src/definition/LegacyLayer.h
new file mode 100644
index 0000000..cef1762
--- /dev/null
+++ b/src/definition/LegacyLayer.h
@@ -0,0 +1,50 @@
+#ifndef LEGACYLAYER_H
+#define LEGACYLAYER_H
+
+#include <PackStream.h>
+
+typedef void* (*LayerCallbackCreate)();
+typedef void (*LayerCallbackDelete)(void* layer);
+typedef void (*LayerCallbackCopy)(void* source, void* definition);
+typedef void (*LayerCallbackValidate)(void* layer);
+typedef void (*LayerCallbackSave)(PackStream* stream, void* layer);
+typedef void (*LayerCallbackLoad)(PackStream* stream, void* layer);
+
+typedef struct {
+    LayerCallbackCreate callback_create;
+    LayerCallbackDelete callback_delete;
+    LayerCallbackCopy callback_copy;
+    LayerCallbackValidate callback_validate;
+    LayerCallbackSave callback_save;
+    LayerCallbackLoad callback_load;
+} LayerType;
+
+#ifdef __cplusplus
+
+#include <BaseDefinition.h>
+
+/**
+ * @brief Wrapper around the old LayerType, used by C code.
+ */
+class LegacyLayer:public BaseDefinition
+{
+public:
+    LegacyLayer(BaseDefinition* parent, LayerType* type);
+    virtual ~LegacyLayer();
+
+    virtual void save(PackStream* pack);
+    virtual void load(PackStream* pack);
+
+    virtual void copy(LegacyLayer* destination);
+    virtual void validate();
+
+    inline void* getLegacyDefinition() { return legacy; }
+
+private:
+    LayerType type;
+    void* legacy;
+};
+
+#endif
+
+#endif // LEGACYLAYER_H
diff --git a/src/definition/definition.pro b/src/definition/definition.pro
index a3d9a03..39c6b65 100644
--- a/src/definition/definition.pro
+++ b/src/definition/definition.pro
@@ -12,11 +12,15 @@ TEMPLATE = lib
 DEFINES += DEFINITION_LIBRARY
 
 SOURCES += \
-    BaseDefinition.cpp
+    BaseDefinition.cpp \
+    Layers.cpp \
+    LegacyLayer.cpp
 
 HEADERS +=\
         definition_global.h \
-    BaseDefinition.h
+    BaseDefinition.h \
+    Layers.h \
+    LegacyLayer.h
 
 unix:!symbian {
     maemo5 {
diff --git a/src/editing/baseform.h b/src/editing/baseform.h
index 80dc3aa..1531909 100644
--- a/src/editing/baseform.h
+++ b/src/editing/baseform.h
@@ -12,7 +12,7 @@
 #include "PackStream.h"
 #include "rendering/tools/lighting.h"
 #include "rendering/noise.h"
-#include "rendering/layers.h"
+#include "Layers.h"
 
 class QPushButton;
 class QComboBox;
diff --git a/src/editing/baseformlayer.cpp b/src/editing/baseformlayer.cpp
index b88ed28..125be51 100644
--- a/src/editing/baseformlayer.cpp
+++ b/src/editing/baseformlayer.cpp
@@ -135,7 +135,7 @@ void BaseFormLayer::layerRenamedEvent(int layer, QString new_name)
 
 void BaseFormLayer::layerSelectedEvent(int layer)
 {
-    if (_layers_modified)
+    if (_layers_modified && layer >= 0)
     {
         layerReadCurrentFrom(layersGetLayer(_layers_modified, layer));
     }
diff --git a/src/editing/baseformlayer.h b/src/editing/baseformlayer.h
index 2f7a1ae..f89ece5 100644
--- a/src/editing/baseformlayer.h
+++ b/src/editing/baseformlayer.h
@@ -4,7 +4,7 @@
 /* Base form, with automatic layer control */
 
 #include "baseform.h"
-#include "rendering/layers.h"
+#include "Layers.h"
 
 class BaseFormLayer:public BaseForm
 {
diff --git a/src/editing/common/freelayerhelper.h b/src/editing/common/freelayerhelper.h
index af6178b..0cbec29 100644
--- a/src/editing/common/freelayerhelper.h
+++ b/src/editing/common/freelayerhelper.h
@@ -2,7 +2,7 @@
 #define	_EDITING_COMMON_FREELAYERHELPER_H_
 
 #include <QObject>
-#include "rendering/layers.h"
+#include "Layers.h"
 
 class QTableWidget;
 class QPushButton;
diff --git a/src/editing/dialoglayers.h b/src/editing/dialoglayers.h
index 8aca793..9fb08a2 100644
--- a/src/editing/dialoglayers.h
+++ b/src/editing/dialoglayers.h
@@ -6,7 +6,7 @@
 #include <QListWidget>
 #include "tools.h"
 
-#include "rendering/layers.h"
+#include "Layers.h"
 
 class DialogLayers;
 class BaseFormLayer;
diff --git a/src/editing/inputlayers.h b/src/editing/inputlayers.h
index 90565eb..e66c44f 100644
--- a/src/editing/inputlayers.h
+++ b/src/editing/inputlayers.h
@@ -4,7 +4,7 @@
 #include <QWidget>
 #include "baseinput.h"
 #include "dialoglayers.h"
-#include "rendering/layers.h"
+#include "Layers.h"
 
 class InputLayers:public BaseInput
 {
diff --git a/src/exploring/exploring.pro b/src/exploring/exploring.pro
index de60b83..ccc18dd 100644
--- a/src/exploring/exploring.pro
+++ b/src/exploring/exploring.pro
@@ -33,3 +33,15 @@ else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../system/debug/ -l
 else:unix: LIBS += -L$$OUT_PWD/../system/ -lpaysages_system
 INCLUDEPATH += $$PWD/../system
 DEPENDPATH += $$PWD/../system
+
+win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../definition/release/ -lpaysages_definition
+else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../definition/debug/ -lpaysages_definition
+else:unix: LIBS += -L$$OUT_PWD/../definition/ -lpaysages_definition
+INCLUDEPATH += $$PWD/../definition
+DEPENDPATH += $$PWD/../definition
+
+win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../basics/release/ -lpaysages_basics
+else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../basics/debug/ -lpaysages_basics
+else:unix: LIBS += -L$$OUT_PWD/../basics/ -lpaysages_basics
+INCLUDEPATH += $$PWD/../basics
+DEPENDPATH += $$PWD/../basics
diff --git a/src/rendering/atmosphere/public.h b/src/rendering/atmosphere/public.h
index 9a9e53f..0bf20fb 100644
--- a/src/rendering/atmosphere/public.h
+++ b/src/rendering/atmosphere/public.h
@@ -6,7 +6,6 @@
 #include "../tools/euclid.h"
 #include "../tools/color.h"
 #include "PackStream.h"
-#include "../layers.h"
 #include "../shared/types.h"
 
 #ifdef __cplusplus
diff --git a/src/rendering/clouds/public.h b/src/rendering/clouds/public.h
index 52ee011..b1698c8 100644
--- a/src/rendering/clouds/public.h
+++ b/src/rendering/clouds/public.h
@@ -7,7 +7,7 @@
 #include "../tools/curve.h"
 #include "../tools/euclid.h"
 #include "../noise.h"
-#include "../layers.h"
+#include "Layers.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/src/rendering/layers.c b/src/rendering/layers.c
deleted file mode 100644
index f4791fe..0000000
--- a/src/rendering/layers.c
+++ /dev/null
@@ -1,210 +0,0 @@
-#include "layers.h"
-
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define LAYERS_MAX_NAME_LENGTH 50
-
-typedef struct
-{
-    void* definition;
-    char name[LAYERS_MAX_NAME_LENGTH + 1];
-} LayerInfo;
-
-struct Layers {
-    LayerType type;
-    int count;
-    int max_count;
-    void* null_layer;
-    LayerInfo* layers_info;
-};
-
-Layers* layersCreate(LayerType type, int max_layer_count)
-{
-    Layers* result = malloc(sizeof(Layers));
-
-    result->type = type;
-    result->count = 0;
-    result->max_count = max_layer_count;
-    result->null_layer = type.callback_create();
-    result->layers_info = malloc(sizeof(LayerInfo) * max_layer_count);
-
-    return result;
-}
-
-Layers* layersCreateCopy(Layers* original)
-{
-    Layers* result = layersCreate(original->type, original->max_count);
-    layersCopy(original, result);
-    return result;
-}
-
-void layersDelete(Layers* layers)
-{
-    int i;
-    for (i = 0; i < layers->count; i++)
-    {
-        layers->type.callback_delete(layers->layers_info[i].definition);
-    }
-
-    layers->type.callback_delete(layers->null_layer);
-    free(layers->layers_info);
-    free(layers);
-}
-
-void layersCopy(Layers* source, Layers* destination)
-{
-    int i;
-
-    assert(source->type.callback_copy == destination->type.callback_copy);
-    assert(source->type.callback_create == destination->type.callback_create);
-    assert(source->type.callback_delete == destination->type.callback_delete);
-    assert(source->type.callback_load == destination->type.callback_load);
-    assert(source->type.callback_save == destination->type.callback_save);
-    assert(source->type.callback_validate == destination->type.callback_validate);
-    assert(source->max_count == destination->max_count);
-
-    /* TODO Optimize by reusing common layers */
-    while (destination->count > 0)
-    {
-        layersDeleteLayer(destination, 0);
-    }
-    for (i = 0; i < source->count; i++)
-    {
-        layersAddLayer(destination, source->layers_info[i].definition);
-        layersSetName(destination, i, layersGetName(source, i));
-    }
-}
-
-void layersValidate(Layers* layers)
-{
-    int i;
-
-    for (i = 0; i < layers->count; i++)
-    {
-        layers->type.callback_validate(layers->layers_info[i].definition);
-        layers->layers_info[i].name[LAYERS_MAX_NAME_LENGTH] = '\0';
-    }
-}
-
-void layersSave(PackStream* stream, Layers* layers)
-{
-    int i;
-
-    packWriteInt(stream, &layers->count);
-    for (i = 0; i < layers->count; i++)
-    {
-        packWriteString(stream, layers->layers_info[i].name, LAYERS_MAX_NAME_LENGTH);
-        layers->type.callback_save(stream, layers->layers_info[i].definition);
-    }
-}
-
-void layersLoad(PackStream* stream, Layers* layers)
-{
-    int i;
-
-    packReadInt(stream, &layers->count);
-    for (i = 0; i < layers->count; i++)
-    {
-        packReadString(stream, layers->layers_info[i].name, LAYERS_MAX_NAME_LENGTH);
-        layers->type.callback_load(stream, layers->layers_info[i].definition);
-    }
-    layersValidate(layers);
-}
-
-const char* layersGetName(Layers* layers, int layer)
-{
-    if (layer >= 0 && layer < layers->count)
-    {
-        return layers->layers_info[layer].name;
-    }
-    else
-    {
-        return "";
-    }
-}
-
-void layersSetName(Layers* layers, int layer, const char* name)
-{
-    if (layer >= 0 && layer < layers->count)
-    {
-        strncpy(layers->layers_info[layer].name, name, LAYERS_MAX_NAME_LENGTH);
-    }
-}
-
-void layersClear(Layers* layers)
-{
-    while (layersCount(layers))
-    {
-        layersDeleteLayer(layers, 0);
-    }
-}
-
-int layersCount(Layers* layers)
-{
-    return layers->count;
-}
-
-void* layersGetLayer(Layers* layers, int layer)
-{
-    if (layer >= 0 && layer < layers->count)
-    {
-        return layers->layers_info[layer].definition;
-    }
-    else
-    {
-        return layers->null_layer;
-    }
-}
-
-int layersAddLayer(Layers* layers, void* definition)
-{
-    if (layers->count < layers->max_count)
-    {
-        layers->layers_info[layers->count].definition = layers->type.callback_create();
-        if (definition)
-        {
-            layers->type.callback_copy(definition, layers->layers_info[layers->count].definition);
-        }
-
-        layers->count++;
-        layersSetName(layers, layers->count - 1, "unnamed");
-        return layers->count - 1;
-    }
-    else
-    {
-        return -1;
-    }
-}
-
-void layersDeleteLayer(Layers* layers, int layer)
-{
-    if (layer >= 0 && layer < layers->count)
-    {
-        layers->type.callback_delete(layers->layers_info[layer].definition);
-        if (layers->count > 1 && layer < layers->count - 1)
-        {
-            memmove(layers->layers_info + layer, layers->layers_info + layer + 1, sizeof(LayerInfo) * (layers->count - layer - 1));
-        }
-        layers->count--;
-    }
-}
-
-void layersMove(Layers* layers, int layer, int new_position)
-{
-    if (layer >= 0 && layer < layers->count && new_position != layer && new_position >= 0 && new_position < layers->count)
-    {
-        LayerInfo temp;
-        temp = layers->layers_info[layer];
-        if (new_position > layer)
-        {
-            memmove(layers->layers_info + layer, layers->layers_info + layer + 1, sizeof(LayerInfo) * (new_position - layer));
-        }
-        else
-        {
-            memmove(layers->layers_info + new_position + 1, layers->layers_info + new_position, sizeof(LayerInfo) * (layer - new_position));
-        }
-        layers->layers_info[new_position] = temp;
-    }
-}
diff --git a/src/rendering/layers.h b/src/rendering/layers.h
deleted file mode 100644
index f2bb1db..0000000
--- a/src/rendering/layers.h
+++ /dev/null
@@ -1,55 +0,0 @@
-#ifndef _PAYSAGES_LAYERS_H_
-#define _PAYSAGES_LAYERS_H_
-
-/* Factorized layer management (with names) */
-
-#include "rendering_global.h"
-#include "PackStream.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef void* (*LayerCallbackCreate)();
-typedef void (*LayerCallbackDelete)(void* layer);
-typedef void (*LayerCallbackCopy)(void* source, void* definition);
-typedef void (*LayerCallbackValidate)(void* layer);
-typedef void (*LayerCallbackSave)(PackStream* stream, void* layer);
-typedef void (*LayerCallbackLoad)(PackStream* stream, void* layer);
-
-typedef struct {
-    LayerCallbackCreate callback_create;
-    LayerCallbackDelete callback_delete;
-    LayerCallbackCopy callback_copy;
-    LayerCallbackValidate callback_validate;
-    LayerCallbackSave callback_save;
-    LayerCallbackLoad callback_load;
-} LayerType;
-
-typedef struct Layers Layers;
-
-RENDERINGSHARED_EXPORT Layers* layersCreate(LayerType type, int max_layer_count);
-RENDERINGSHARED_EXPORT Layers* layersCreateCopy(Layers* original);
-RENDERINGSHARED_EXPORT void layersDelete(Layers* layers);
-
-RENDERINGSHARED_EXPORT void layersCopy(Layers* source, Layers* destination);
-RENDERINGSHARED_EXPORT void layersValidate(Layers* layers);
-
-RENDERINGSHARED_EXPORT void layersSave(PackStream* stream, Layers* layers);
-RENDERINGSHARED_EXPORT void layersLoad(PackStream* stream, Layers* layers);
-
-RENDERINGSHARED_EXPORT const char* layersGetName(Layers* layers, int layer);
-RENDERINGSHARED_EXPORT void layersSetName(Layers* layers, int layer, const char* name);
-
-RENDERINGSHARED_EXPORT void layersClear(Layers* layers);
-RENDERINGSHARED_EXPORT int layersCount(Layers* layers);
-RENDERINGSHARED_EXPORT void* layersGetLayer(Layers* layers, int layer);
-RENDERINGSHARED_EXPORT int layersAddLayer(Layers* layers, void* definition);
-RENDERINGSHARED_EXPORT void layersDeleteLayer(Layers* layers, int layer);
-RENDERINGSHARED_EXPORT void layersMove(Layers* layers, int layer, int new_position);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/src/rendering/rendering.pro b/src/rendering/rendering.pro
index a78c0d4..deb455e 100644
--- a/src/rendering/rendering.pro
+++ b/src/rendering/rendering.pro
@@ -18,7 +18,6 @@ SOURCES += main.c \
     noiseperlin.c \
     noisenaive.c \
     noise.c \
-    layers.c \
     geoarea.c \
     camera.c \
     atmosphere/atm_render.c \
@@ -74,7 +73,6 @@ HEADERS += \
     noisenaive.h \
     noise.h \
     main.h \
-    layers.h \
     geoarea.h \
     camera.h \
     atmosphere/public.h \
diff --git a/src/rendering/textures/public.h b/src/rendering/textures/public.h
index 7d03bd8..d4daff6 100644
--- a/src/rendering/textures/public.h
+++ b/src/rendering/textures/public.h
@@ -2,7 +2,7 @@
 #define _PAYSAGES_TEXTURES_PUBLIC_H_
 
 #include "../rendering_global.h"
-#include "rendering/layers.h"
+#include "Layers.h"
 #include "rendering/tools/zone.h"
 #include "rendering/tools/lighting.h"
 #include "rendering/terrain/public.h"
diff --git a/src/rendering/water/public.h b/src/rendering/water/public.h
index 9e23578..22d6a1a 100644
--- a/src/rendering/water/public.h
+++ b/src/rendering/water/public.h
@@ -7,7 +7,7 @@
 #include "../tools/curve.h"
 #include "../tools/euclid.h"
 #include "../noise.h"
-#include "../layers.h"
+#include "Layers.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/src/system/PackStream.cpp b/src/system/PackStream.cpp
index fe2d96f..03933af 100644
--- a/src/system/PackStream.cpp
+++ b/src/system/PackStream.cpp
@@ -58,6 +58,14 @@ void PackStream::write(char* value, int max_length)
     }
 }
 
+void PackStream::write(QString value)
+{
+    if (stream)
+    {
+        *stream << value;
+    }
+}
+
 void PackStream::read(int* value)
 {
     if (stream and value and not stream->atEnd())
@@ -89,6 +97,20 @@ void PackStream::read(char* value, int max_length)
     }
 }
 
+QString PackStream::readString()
+{
+    if (stream and not stream->atEnd())
+    {
+        QString output;
+        *stream >> output;
+        return output;
+    }
+    else
+    {
+        return QString();
+    }
+}
+
 // Transitional C-API
 
 PackStream* packReadFile(const char* filepath)
diff --git a/src/system/PackStream.h b/src/system/PackStream.h
index 12b76ed..c001ce2 100644
--- a/src/system/PackStream.h
+++ b/src/system/PackStream.h
@@ -5,6 +5,7 @@
 
 #ifdef __cplusplus
 
+#include <QString>
 class QFile;
 class QDataStream;
 
@@ -27,10 +28,12 @@ public:
     void write(int* value);
     void write(double* value);
     void write(char* value, int max_length);
+    void write(QString value);
 
     void read(int* value);
     void read(double* value);
     void read(char* value, int max_length);
+    QString readString();
 
 private:
     QFile* file;