diff --git a/scripts/shelfShape.js b/scripts/shelfShape.js
index 03e598a..ed2b1fa 100644
--- a/scripts/shelfShape.js
+++ b/scripts/shelfShape.js
@@ -164,7 +164,7 @@
 
                 spawnClone();
                 notify("Spawned " + _shapeId + " (" + (live + 1) + "/" + owned + " active)");
-                _busy = false;
+                // _busy stays true until trigger release (stopNearTrigger/stopFarTrigger/clickUpOnEntity)
             });
         });
     }
@@ -175,9 +175,16 @@
         _entityID = entityID;
     };
 
-    this.clickDownOnEntity = function () {
-        onClickDown();
-    };
+    // Mouse
+    this.clickDownOnEntity  = function () { onClickDown(); };
+    this.clickUpOnEntity    = function () { _busy = false; };
+
+    // Controller — near (<0.3m) and far (>0.3m)
+    // Requires "Triggerable" checkbox enabled on the entity.
+    this.startNearTrigger = function () { onClickDown(); };
+    this.stopNearTrigger  = function () { _busy = false; };
+    this.startFarTrigger  = function () { onClickDown(); };
+    this.stopFarTrigger   = function () { _busy = false; };
 
     this.unload = function () {
         _token = null;