From 02d3608a8b853a009dfc437dbbfbff72a2393ef2 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <matthias@gamezock.de>
Date: Sun, 10 Jan 2010 12:40:10 +0100
Subject: Only respect floor triangles when picking room

---
 src/Gui/Renderer/RoomListRenderer.cpp |  2 +-
 src/View/TopView.cpp                  | 22 ++++++++++++----------
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/src/Gui/Renderer/RoomListRenderer.cpp b/src/Gui/Renderer/RoomListRenderer.cpp
index 83b0402..8291c4e 100644
--- a/src/Gui/Renderer/RoomListRenderer.cpp
+++ b/src/Gui/Renderer/RoomListRenderer.cpp
@@ -38,7 +38,7 @@ void RoomListRenderer::render_vfunc(const Glib::RefPtr<Gdk::Drawable> &window, G
     const Gdk::Rectangle &/*background_area*/, const Gdk::Rectangle &cell_area,
     const Gdk::Rectangle &/*expose_area*/, Gtk::CellRendererState /*flags*/) {
 
-  Data::Room *room = reinterpret_cast<Data::Room*>(value.get_value());
+  Data::Room *room = static_cast<Data::Room*>(value.get_value());
 
   int xpad, ypad;
   get_padding(xpad, ypad);
diff --git a/src/View/TopView.cpp b/src/View/TopView.cpp
index 7e649cc..fa894ca 100644
--- a/src/View/TopView.cpp
+++ b/src/View/TopView.cpp
@@ -236,30 +236,32 @@ void TopView::click(float x, float y, unsigned int button) {
   
   vmml::vec2f v(xCenter + x/scale, yCenter + y/scale);
   
-  Data::Room *selectedRoom = 0;
-  
   const std::list<Data::Room*> &rooms = instance->getLevel()->getRooms();
   
   for(std::list<Data::Room*>::const_iterator room = rooms.begin(); room != rooms.end(); ++room) {
     const std::list<Data::Triangle*>& triangles = (*room)->getTriangles();
     
     for(std::list<Data::Triangle*>::const_iterator t = triangles.begin(); t != triangles.end(); ++t) {
+      vmml::vec3f edge1 = (*t)->getVertex(1) - (*t)->getVertex(0);
+      vmml::vec3f edge2 = (*t)->getVertex(2) - (*t)->getVertex(0);
+
+      vmml::vec3f normal = edge1.cross(edge2);
+
+      if(normal.y() <= 0)
+        continue;
+
       vmml::vec2f v1((*t)->getVertex(0).x(), (*t)->getVertex(0).z());
       vmml::vec2f v2((*t)->getVertex(1).x(), (*t)->getVertex(1).z());
       vmml::vec2f v3((*t)->getVertex(2).x(), (*t)->getVertex(2).z());
       
       if(Math::Triangle2D(v1, v2, v3).contains(v)) {
-        selectedRoom = *room;
-        break;
+        instance->setSelectedRoom(*room);
+        return;
       }
     }
-    
-    if(selectedRoom)
-      break;
   }
-  
-  instance->setSelectedRoom(selectedRoom);
-  signalUpdate().emit();
+
+  instance->setSelectedRoom(0);
 }
  
 }
-- 
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