From be50adbed39333791ca4c5be51b61b8ced98072c Mon Sep 17 00:00:00 2001
From: abcdefg30 <alphabet@streber24.de>
Date: Tue, 6 Oct 2015 22:14:23 +0200
Subject: [PATCH] Add a lua function to check for prerequisites

---
 .../Scripting/Properties/PlayerProperties.cs           | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/OpenRA.Mods.Common/Scripting/Properties/PlayerProperties.cs b/OpenRA.Mods.Common/Scripting/Properties/PlayerProperties.cs
index 987276f682..f723aa0b6c 100644
--- a/OpenRA.Mods.Common/Scripting/Properties/PlayerProperties.cs
+++ b/OpenRA.Mods.Common/Scripting/Properties/PlayerProperties.cs
@@ -74,5 +74,15 @@ namespace OpenRA.Mods.Common.Scripting
 
 			return result.ToArray();
 		}
+
+		[Desc("Check if the player has these prerequisites available.")]
+		public bool HasPrerequisites(string[] type)
+		{
+			var tt = Player.PlayerActor.TraitOrDefault<TechTree>();
+			if (tt == null)
+				throw new LuaException("Missing TechTree trait on player {0}!".F(Player));
+
+			return tt.HasPrerequisites(type);
+		}
 	}
 }