From d75681bd6b453b17da410aaeea66213af2c5ce1b Mon Sep 17 00:00:00 2001
From: terencehill <piuntn@gmail.com>
Date: Sat, 15 May 2010 23:54:55 +0200
Subject: [PATCH] Snap panel to the central vertical/horizontal axis if enough
 close

---
 qcsrc/client/hud.qc | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/qcsrc/client/hud.qc b/qcsrc/client/hud.qc
index 222823039..39fbe9750 100644
--- a/qcsrc/client/hud.qc
+++ b/qcsrc/client/hud.qc
@@ -786,6 +786,7 @@ float HUD_Panel_SetSize(float id, vector mySize)
 	return didntresize;
 }
 
+// check if the panel is enough close to central vertical/horizontal axis, and
 // check if move will result in panel being moved into another panel. If so, return snapped vector, otherwise return the given vector
 vector HUD_Panel_CheckMove(float id, vector myPos, vector mySize)
 {
@@ -799,6 +800,29 @@ vector HUD_Panel_CheckMove(float id, vector myPos, vector mySize)
 	vector myCenter;
 	vector targCenter;
 
+	vector snapDistance;
+	snapDistance_x = vid_conwidth / 64;
+	snapDistance_y = vid_conheight / 64;
+
+	myCenter = eX * (myPos_x + 0.5 * mySize_x);
+	targCenter = eX * (vid_conwidth * 0.5);
+	if (myCenter_x > targCenter_x - snapDistance_x && myCenter_x < targCenter_x + snapDistance_x)
+	{
+		// snap to central vertical axis
+		myTarget_x = targCenter_x - mySize_x * 0.5;
+		myTarget_y = myPos_y;
+	}
+	
+	myCenter = eY * (myPos_y + 0.5 * mySize_y);
+	targCenter = eY * (vid_conheight * 0.5);
+	if (myCenter_y > targCenter_y - snapDistance_y && myCenter_y < targCenter_y + snapDistance_y)
+	{
+		// snap to central horizontal axis
+		if (myTarget_x == 0)
+			myTarget_x = myPos_x;
+		myTarget_y = targCenter_y - mySize_y * 0.5;
+	}
+
 	for (i = 0; i < panel_cnt; ++i) {
 		if(i == id || !HUD_Panel_CheckActive(i))
 			continue;
-- 
2.39.2