From 262eb40dfed47d1002dc7ad1790764fb20fcaf3d Mon Sep 17 00:00:00 2001
From: Benau <Benau@users.noreply.github.com>
Date: Sun, 4 Sep 2016 14:33:23 +0800
Subject: [PATCH] Allow showing yellow (2d) / green (3d) quads in track debug

---
 src/tracks/battle_graph.cpp    |  1 -
 src/tracks/graph_structure.cpp | 12 +++++-------
 src/tracks/graph_structure.hpp |  7 +++++--
 src/tracks/quad_graph.cpp      | 14 ++++++++++++++
 src/tracks/quad_graph.hpp      |  3 +--
 5 files changed, 25 insertions(+), 12 deletions(-)

diff --git a/src/tracks/battle_graph.cpp b/src/tracks/battle_graph.cpp
index 300b38e8c..e6ebcc2ab 100644
--- a/src/tracks/battle_graph.cpp
+++ b/src/tracks/battle_graph.cpp
@@ -1,4 +1,3 @@
-
 //
 //  SuperTuxKart - a fun racing game with go-kart
 //  Copyright (C) 2009-2015 Joerg Henrichs
diff --git a/src/tracks/graph_structure.cpp b/src/tracks/graph_structure.cpp
index bb006e489..e6fd0cd71 100644
--- a/src/tracks/graph_structure.cpp
+++ b/src/tracks/graph_structure.cpp
@@ -78,15 +78,11 @@ void GraphStructure::createDebugMesh()
     createMesh(/*show_invisible*/true,
                /*enable_transparency*/true);
 
-    // Now colour the quads red/blue/red ...
-    video::SColor     c( 128, 255, 0, 0);
     video::S3DVertex *v = (video::S3DVertex*)m_mesh_buffer->getVertices();
     for (unsigned int i = 0; i < m_mesh_buffer->getVertexCount(); i++)
     {
-        // Swap the colours from red to blue and back
-        c.setRed ((i%2) ? 255 : 0);
-        c.setBlue((i%2) ? 0 : 255);
-        v[i].Color = c;
+        // Swap the alpha and back
+        v[i].Color.setAlpha((i%2) ? 64 : 255);
     }
     m_node = irr_driver->addMesh(m_mesh, "track-debug-mesh");
 #ifdef DEBUG
@@ -154,7 +150,9 @@ void GraphStructure::createMesh(bool show_invisible,
         // Transfer the 4 points of the current quad to the list of vertices
         set3DVerticesOfGraph(count, new_v+4*i, (different_color ?
             (nc == COLOR_RED ? video::SColor(255, 255, 0, 0) :
-            video::SColor(255, 0, 0, 255)) : c));
+            nc == COLOR_GREEN ? video::SColor(255, 0, 255, 0) :
+            nc == COLOR_BLUE ? video::SColor(255, 0, 0, 255) :
+            video::SColor(255, 255, 255, 0)) : c));
 
         // Set up the indices for the triangles
         // (note, afaik with opengl we could use quads directly, but the code
diff --git a/src/tracks/graph_structure.hpp b/src/tracks/graph_structure.hpp
index d66f156c5..e6f159e4c 100644
--- a/src/tracks/graph_structure.hpp
+++ b/src/tracks/graph_structure.hpp
@@ -46,11 +46,14 @@ class GraphStructure : public NoCopy
 {
 protected:
 
-    /** Used by soccer field with navmesh to draw goal line. */
+    /** Used by soccer field with navmesh to draw goal line,
+     *  or to determine 2d/3d nodes in driveline graph. */
     enum NodeColor
     {
         COLOR_BLUE,
-        COLOR_RED
+        COLOR_GREEN,
+        COLOR_RED,
+        COLOR_YELLOW
     };
 
     void                    cleanupDebugMesh();
diff --git a/src/tracks/quad_graph.cpp b/src/tracks/quad_graph.cpp
index e0467e570..f8d3c86ca 100644
--- a/src/tracks/quad_graph.cpp
+++ b/src/tracks/quad_graph.cpp
@@ -908,3 +908,17 @@ float QuadGraph::getDistanceFromStart(int j) const
 {
     return m_all_nodes[j]->getDistanceFromStart();
 }   // getDistanceFromStart
+
+//-----------------------------------------------------------------------------
+const bool QuadGraph::differentNodeColor(int n, NodeColor* c) const
+{
+    if (UserConfigParams::m_track_debug)
+    {
+        if (dynamic_cast<Node3D*>(m_all_nodes[n]) != NULL)
+            *c = COLOR_GREEN;
+        else
+            *c = COLOR_YELLOW;
+        return true;
+    }
+    return false;
+}   // differentNodeColor
diff --git a/src/tracks/quad_graph.hpp b/src/tracks/quad_graph.hpp
index eaa3634f7..a5ead4155 100644
--- a/src/tracks/quad_graph.hpp
+++ b/src/tracks/quad_graph.hpp
@@ -92,8 +92,7 @@ private:
     virtual const bool hasLapLine() const
                                                             { return true;  }
     // ------------------------------------------------------------------------
-    virtual const bool differentNodeColor(int n, NodeColor* c) const
-                                                            { return false; }
+    virtual const bool differentNodeColor(int n, NodeColor* c) const;
 
 public:
     static const int UNKNOWN_SECTOR;