From a744900e749b481386107bbcd70b0d79443b6b82 Mon Sep 17 00:00:00 2001
From: Taryn Hill <Phrohdoh@gmail.com>
Date: Wed, 11 Mar 2015 13:41:17 -0500
Subject: [PATCH] Mark ramp/slope tiles as unbuildable.

---
 OpenRA.Mods.Common/Traits/Buildings/BuildingUtils.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/OpenRA.Mods.Common/Traits/Buildings/BuildingUtils.cs b/OpenRA.Mods.Common/Traits/Buildings/BuildingUtils.cs
index c099636758..cd2d6ceced 100644
--- a/OpenRA.Mods.Common/Traits/Buildings/BuildingUtils.cs
+++ b/OpenRA.Mods.Common/Traits/Buildings/BuildingUtils.cs
@@ -27,6 +27,12 @@ namespace OpenRA.Mods.Common.Traits
 			if (!bi.AllowInvalidPlacement && world.ActorMap.GetUnitsAt(cell).Any(a => a != toIgnore))
 				return false;
 
+			var tile = world.Map.MapTiles.Value[cell];
+			var rampType = world.TileSet.GetTileInfo(tile).RampType;
+
+			if (rampType > 0)
+				return false;
+
 			return bi.TerrainTypes.Contains(world.Map.GetTerrainInfo(cell).Type);
 		}