Snap panel to the central vertical/horizontal axis if enough close

diff --git a/qcsrc/client/hud.qc b/qcsrc/client/hud.qc
index 222823039d2007bda59887eb887826557901575f..39fbe9750c66d49154847f0158c9c20729c54ccb 100644 (file)
--- 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;