Fixed some memory issues

TODO

@@ -1,58 +1,26 @@
-Technology Preview 2 :
-- Add initial terrain offset so that the (0,0) coordinates are above water (to avoid starting at the middle of a sea).
-- Use water height as 0.0 (offset the terrain).
-- Add missing cloud models.
-- Finish material dialog.
-- Finish texture dialog.
+Technlology Preview 2 :
+- Rewrite UI in QtQuick, with full-window OpenGL editor.
+- Streamline the definition system, with undo and events.
+- Implement copy-on-write on definitions (to avoid copying whole heightmaps for instance).
+- Add clouds to OpenGL with 3d textures.
+- Fix potential holes in land rendering (OpenGL and software).
+
+Technology Preview 3 :
+- Alter aerial perspective using estimation of the amount of light left after cloud layers traversal.
 - Fix rendering when inside a cloud layer, with other upper or lower layers.
 - Fix the moon being backlit by its own light.
-- Translations.
-
-Technlogy Preview 3 :
-- FOCUS : Streamlining, with undo system
-- FOCUS : Vegetation
-- Implement copy-on-write on definitions (to avoid copying whole heightmaps for instance).
-- Alter aerial perspective using estimation of the amount of light left after cloud layers traversal.
-- Add a map preview to terrain editor.
-- Better time selection widget for atmosphere.
 - Clouds should keep distance to ground.
-- Fully move layer management from BaseForm to BaseFormLayer.
 - Allow render saving in HDR compatible format.
-- Add clouds to explorer with 3d textures.
 - Add fresnel effect to specular lighting.
 - Add shadow control ("minimum lighting") to material.
 - Start using OpenCL to optimize rendering.
-- Fully restore render progress (with first pass).
-- Rethink the quality settings and detail smoothing in the distance.
-   => When quality setting is set to 10, add boost options
-   => Add detail boost (adds granularity)
-   => Add step boost (for marching algorithms)
-- Add logarithmic sliders for some float values.
-- Improve previews.
-   => Add user markers on OSD.
-   => Add areas marking.
-- Add a noise automatic filler.
-- Lock some previews together (eg: terrain height and colored preview).
-- Find a new licence.
 
 Technology Preview 4 :
 - Implement Sub Surface Scattering for water, textures and clouds.
 - Implement earth curvature.
 - Use bicubic interpolation for antialiasing.
-- Allow for larger renders/antialias (will need several two-pass chunks).
-- Add a progress indicator on previews.
-- Mark modified tabs and ask for losing modifications (idem for layers).
-- Fix potential holes in land rendering.
-- Progressive final render (increasing resolution, for second pass only).
-- Improve 3d explorer
-   => Restore LOD and intelligent poly count (and raise max tessellation)
-   => Better handling of high altitude
-   => Interrupt chunk rendering when quitting dialog
-   => Don't display the water if it's below all ground
-   => Try to overcome the near frustum cutting
-   => Add toggles (for water...)
-   => Max texture size should depend on GPU memory available
-- Interrupt preview chunk renderings that will be discarded at commit, or that are no more visible.
+- Add translations.
+- Find a new licence.
 
 Release Candidate :
 - Polish all features and UI.

src/definition/BaseDefinition.cpp

@@ -24,7 +24,9 @@ BaseDefinition::~BaseDefinition()
         parent = NULL;
     }
 
-    for (auto child:children)
+    // Work on a copy, because the child destructor will modify the array by removing itself using removeChild
+    std::vector<BaseDefinition*> children_copy = children;
+    for (auto child:children_copy)
     {
         if (child->getParent() == this)
         {

src/definition/BaseDefinition.h

@@ -28,6 +28,7 @@ public:
 
     inline const BaseDefinition* getParent() const {return parent;}
     inline const BaseDefinition* getRoot() const {return root;}
+    inline int getChildrenCount() const {return children.size();}
 
     /**
      * Return a string representation of the tree (mainly for debugging purposes).

src/definition/Layers.cpp

@@ -92,6 +92,7 @@ int Layers::addLayer(BaseDefinition* layer)
     else
     {
         logWarning("Add layer ignored because limit of %d reached", max_layer_count);
+        delete layer;
         return -1;
     }
 }

src/definition/PaintedGridData.cpp

@@ -6,14 +6,14 @@
 PaintedGridData::PaintedGridData()
 {
     rows_count = 0;
-    rows = new HeightMapRow[1];
+    rows = (HeightMapRow *)malloc(sizeof(HeightMapRow));
     memsize = 0;
 }
 
 PaintedGridData::~PaintedGridData()
 {
     clear();
-    delete[] rows;
+    free(rows);
 }
 
 void PaintedGridData::copy(PaintedGridData *destination) const
@@ -119,7 +119,7 @@ void PaintedGridData::clear()
         free(rows[i].pixel_groups);
     }
     rows_count = 0;
-    delete[] rows;
-    rows = new HeightMapRow[1];
+    free(rows);
+    rows = (HeightMapRow *)malloc(sizeof(HeightMapRow));
     memsize = 0;
 }

src/definition/TextureLayerDefinition.cpp

@@ -14,6 +14,9 @@ TextureLayerDefinition::TextureLayerDefinition(BaseDefinition* parent):
     _displacement_noise = new NoiseGenerator;
     _detail_noise = new NoiseGenerator;
     material = new SurfaceMaterial;
+
+    displacement_height = 0.0;
+    displacement_scaling = 1.0;
 }
 
 TextureLayerDefinition::~TextureLayerDefinition()

src/tests/BaseDefinition_Test.cpp

@@ -12,3 +12,24 @@ TEST(BaseDefinition, toString)
     EXPECT_EQ("root\n branch\n  leaf1\n  leaf2", root.toString());
     EXPECT_EQ("branch\n leaf1\n leaf2", branch.toString());
 }
+
+TEST(BaseDefinition, attachDetach)
+{
+    BaseDefinition* root = new BaseDefinition(NULL, "root");
+    BaseDefinition* child1 = new BaseDefinition(root, "child1");
+    BaseDefinition* child2 = new BaseDefinition(root, "child2");
+
+    EXPECT_EQ(root, child1->getParent());
+    EXPECT_EQ(root, child2->getParent());
+    EXPECT_EQ(2, root->getChildrenCount());
+
+    delete child1;
+
+    EXPECT_EQ(1, root->getChildrenCount());
+
+    delete child2;
+
+    EXPECT_EQ(0, root->getChildrenCount());
+
+    delete root;
+}