Use vertex's individual radius for all relevant calculations

gamecore.cpp

@@ -37,7 +37,7 @@ bool GameCore::init()
 {
     if (SDL_Init(SDL_INIT_EVERYTHING) < 0) return false;
 
-    display = SDL_SetVideoMode(800,600,32, SDL_HWSURFACE | SDL_DOUBLEBUF);
+    display = SDL_SetVideoMode(1024,768,32, SDL_HWSURFACE | SDL_DOUBLEBUF);
     if (display == NULL)
     {
 #ifdef DEBUG
@@ -82,7 +82,7 @@ void GameCore::render()
 	 cursor != vertices.end(); cursor++)
     {
 	Vertex v = *(*cursor);
-	DrawUtils::draw_circle_filled(display, v.x, v.y, NODE_RADIUS,
+	DrawUtils::draw_circle_filled(display, v.x, v.y, v.r,
 				      0x000000);
     }
 
@@ -124,7 +124,10 @@ void GameCore::on_lbutton_down(int x, int y)
     if (cv != NULL &&
 	(MathUtils::distance(cv->x, cv->y, x, y)
 	 > MAX_MOVE_DISTANCE))
+    {
+	graph.select_vertex(x, y);
 	return;
+    }
 
     graph.do_vertex(x, y, NODE_RADIUS);
 }

graph.cpp

@@ -72,3 +72,11 @@ void Graph::add_vertex(int x, int y, int r)
     edges.push_back(e);
     current_vertex = v;
 }
+
+
+Vertex::Vertex(int x, int y, int r)
+{
+    this->x = x;
+    this->y = y;
+    this->r = r;
+}

graph.h

@@ -14,8 +14,7 @@ using std::list;
 class Vertex
 {
   public:
-    Vertex(int x, int y, int r)
+    Vertex(int x, int y, int r);
-    { this->x = x; this->y = y; }
 
     int x;
     int y;