Add foot option to CR_BOX

CR_BOX.scad

@@ -1,3 +1,13 @@
+/* 
+
+Originally by ThatDude7Piglets is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.
+
+https://www.thingiverse.com/thing:6072539
+
+Additions:
+  * optional foot
+*/
+
 /* [Filter] */
 filterThiccness = 100.0; //mm
 
@@ -12,6 +22,13 @@ insideCornerStyle = 2; //[0:Cut Corner, 1:Don't cut corner, 2:Rounded corner]
 /* [OpenSCAD] [Settings] */
 $fn = 100;
 
+/* [Foot] */
+footEnable = 0; //[0:Disable, 1:Enable]
+footShape = 0; //[0:Cylinder, 1:Square]
+footDepth = 10; //mm
+footWidth = 54; //mm
+footInset = 0; //mm
+
 module filter(filterDimensions = [100, 1000, 1000]){
 	cube(filterDimensions);
 }
@@ -41,4 +58,15 @@ mirror([mirrored? 1 : 0, 0, 0]){
 			}
 		}
 	}
+    
+    if(footEnable == 1) {
+        translate([pieceDimensions[0]/2 - footInset, pieceDimensions[1]/2 - footInset, -footDepth/2 - pieceWallThiccness]) {
+            if (footShape == 0) {
+                cylinder(footDepth, footWidth, footWidth, center=true);
+            }
+            else {
+                cube([footWidth*2, footWidth*2, footDepth], center=true);
+            }
+        }
+    }
 }