diff --git a/pixler.bas b/pixler.bas
index 716be28..6b2eec6 100644
--- a/pixler.bas
+++ b/pixler.bas
@@ -487,9 +487,32 @@ end sub
 sub do.line(sx as long,sy as long,ex as long,ey as long,col as long)
     dim osource as long
     dim odest as long
+
     if state.isdrawing then
         osource=_source
         odest=_dest
+
+        ' --- 45-Degree Angle Snapping Logic ---
+        if _keydown(100303) or _keydown(100304) then
+            dim dx as single:dx=ex-sx
+            dim dy as single:dy=ey-sy
+
+            if dx<>0 or dy<>0 then
+                dim linelen as single:linelen=sqr(dx*dx+dy*dy)
+                dim angle as single:angle=_atan2(dy,dx)
+
+                dim pi as single:pi=3.14159265
+                dim degrees as single:degrees=angle*(180.0/pi)
+                dim snappeddegrees as single:snappeddegrees=int((degrees+22.5)/45.0)*45.0
+                dim snappedangle as single:snappedangle=snappeddegrees*(pi/180.0)
+
+                ' FIX: Changed int() to _round() to prevent left/top pixel drifting
+                ex=sx+_round(linelen*cos(snappedangle))
+                ey=sy+_round(linelen*sin(snappedangle))
+            end if
+        end if
+        ' --------------------------------------
+
         if mouseclicked or rmouseclicked then
             _dest layers(1).ihandle
             addcommand"line ("+tst(sx)+","+tst(sy)+","+tst(ex)+","+tst(ey)+","+hex$(col)+")"
@@ -497,6 +520,7 @@ sub do.line(sx as long,sy as long,ex as long,ey as long,col as long)
         else
             _dest layers(2).ihandle
         end if
+
         thickline sx,sy,ex,ey,col
         _source osource
         _dest odest
@@ -701,7 +725,7 @@ sub do.floodfill(x as long,y as long,col as long)
     if mouseclicked or rmouseclicked then
         _source layers(1).ihandle
         _dest layers(1).ihandle
-        
+
         ' Check if either Left Shift (100303) or Right Shift (100304) is held down
         if _keydown(100303) or _keydown(100304) then
             ' Fill until it hits the background color as a border
@@ -712,7 +736,7 @@ sub do.floodfill(x as long,y as long,col as long)
             floodfill x,y,col
             addcommand"floodfill ("+tst(x)+","+tst(y)+","+hex$(col)+")"
         end if
-        
+
         state.isdrawing=0
         _source osource
         _dest odest