From 446d4412eae454126dd7b97a6684f68e81875cfb Mon Sep 17 00:00:00 2001
From: krawthekrow <krawthekrow@gmail.com>
Date: Fri, 18 Nov 2016 19:52:37 +0800
Subject: [PATCH] fix pstn oddity

---
 src/simulation/elements/PSTN.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/simulation/elements/PSTN.cpp b/src/simulation/elements/PSTN.cpp
index 3c8044d5c..b81eb52fd 100644
--- a/src/simulation/elements/PSTN.cpp
+++ b/src/simulation/elements/PSTN.cpp
@@ -198,10 +198,10 @@ int Element_PSTN::CanMoveStack(Simulation * sim, int stackX, int stackY, int dir
 		}
 		else
 		{
-			if (spaces < maxSize && currentPos < maxSize && (!retract || ((r&0xFF) == PT_FRME && posX == stackX && posY == stackY)))
+			if (currentPos - spaces < maxSize && (!retract || ((r&0xFF) == PT_FRME && posX == stackX && posY == stackY)))
 				tempParts[currentPos++] = r>>8;
 			else
-				return spaces;
+				return currentPos;
 		}
 	}
 	if (spaces)