From f2ee0e404cd5c5a5587262d388c81c1107d72688 Mon Sep 17 00:00:00 2001
From: Nick Gasson <nick@nickg.me.uk>
Date: Sun, 28 Feb 2010 16:53:12 +0000
Subject: [PATCH] Detect slopes and warn they're not supported

---
 src/Editor.cpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/Editor.cpp b/src/Editor.cpp
index ef2388f..76056d4 100644
--- a/src/Editor.cpp
+++ b/src/Editor.cpp
@@ -237,8 +237,16 @@ bool Editor::drawTrackTile(const Point<int>& aPoint, const track::Direction& anA
       Vector<float> slope = map->slopeAt(aPoint, anAxis, level);
 
       if (level) {
-         map->setTrackAt(aPoint, makeStraightTrack(anAxis));
-         return true;
+         const bool flat = abs(slope.y) < 0.001f;
+         
+         if (flat) {
+            map->setTrackAt(aPoint, makeStraightTrack(anAxis));
+            return true;
+         }
+         else {
+            warn() << "Slopes not supported yet";
+            return false;
+         }
       }
       else {
          warn() << "Track must be placed on level ground";
-- 
2.39.2