diff --git a/src/game-lib-component-trigger-box-box.js b/src/game-lib-component-trigger-box-box.js
new file mode 100644
index 0000000..c999894
--- /dev/null
+++ b/src/game-lib-component-trigger-box-box.js
@@ -0,0 +1,74 @@
+//
+// this component operates on it's parent entity's bounding box.
+// so, you can't use this component with a null-mesh.
+//
+GameLib.D3.ComponentTriggerBoxBox = function(
+    componentId,
+    entitiesToCheck,
+    onInside,
+    onEnter,
+    onLeave
+) {
+    this.componentId = componentId || GameLib.D3.Tools.RandomId();
+    this.parentEntity = null;
+
+    // Todo: this should be executed somewhere in game-lib-z, so that we don't execute it on every construction of an object.
+    GameLib.D3.Utils.Extend(GameLib.D3.ComponentTriggerBoxBox, GameLib.D3.ComponentInterface);
+
+    this.entitiesToCheck = entitiesToCheck || [];
+    this.onInside = onInside || null;
+    this.onEnter = onEnter || null;
+    this.onLeave = onLeave || null;
+
+    // runtime code
+    this.entitiesInside = [];
+};
+
+if(typeof THREE != "undefined") {
+    ComponentTriggerBoxBox_BB = new THREE.Box3();
+    ComponentTriggerBoxBox_BBEntity = new THREE.Box3();
+}
+
+
+///////////////////////// Methods to override //////////////////////////
+GameLib.D3.ComponentTriggerBoxBox.prototype.onUpdate = function(
+    deltaTime,
+    parentEntity
+) {
+
+    if(parentEntity.mesh) {
+        // Calculate the current transform here, using the position, orientation and scale of the entity.
+
+        ComponentTriggerBoxBox_BB.setFromObject(parentEntity.mesh);
+
+        for(var e in this.entitiesToCheck) {
+            var entityToCheck = this.entitiesToCheck[e];
+
+            ComponentTriggerBoxBox_BBEntity.setFromObject(entityToCheck.mesh);
+
+            if(ComponentTriggerBoxBox_BB.intersectsBox(ComponentTriggerBoxBox_BBEntity)) {
+
+                if(this.entitiesInside.indexOf(entityToCheck) <= -1) { // check if this is the first time the entity enters the trigger
+                    this.entitiesInside.push(entityToCheck);
+
+                    if(this.onEnter) {
+                        this.onEnter(parentEntity, entityToCheck);
+                    }
+                }
+
+
+                if(this.onInside) {
+                    this.onInside(parentEntity, entityToCheck);
+                }
+
+            } else if(this.entitiesInside.indexOf(entityToCheck) > -1) { // entity WAS inside the trigger
+                this.entitiesInside.splice(this.entitiesInside.indexOf(entityToCheck), 1);
+
+                if(this.onLeave) {
+                    this.onLeave(parentEntity, entityToCheck);
+                }
+            }
+
+        }
+    }
+};
\ No newline at end of file
diff --git a/src/game-lib-component-trigger-box-sphere.js b/src/game-lib-component-trigger-box-sphere.js
index 0a90b65..2f91a2c 100644
--- a/src/game-lib-component-trigger-box-sphere.js
+++ b/src/game-lib-component-trigger-box-sphere.js
@@ -25,7 +25,6 @@ GameLib.D3.ComponentTriggerBoxSphere = function(
 };
 
 if(typeof THREE != "undefined") {
-    ComponentTriggerBoxSphere_BoxInverseTransform = new THREE.Matrix4();
     ComponentTriggerBoxSphere_TargetPosition_Vec3 = new THREE.Vector3();
     ComponentTriggerBoxSphere_TargetRadius = 0.0;
 }
@@ -39,11 +38,8 @@ GameLib.D3.ComponentTriggerBoxSphere.prototype.onUpdate = function(
     if(parentEntity.mesh) {
         // Calculate the current transform here, using the position, orientation and scale of the entity.
 
-        if(!parentEntity.mesh.geometry.boundingBox) {
-            parentEntity.mesh.geometry.computeBoundingBox();
-        }
-
-        ComponentTriggerBoxSphere_BoxInverseTransform.getInverse(parentEntity.mesh.matrix);
+        var bb = new THREE.Box3();
+        bb.setFromObject(parentEntity.mesh);
 
         for(var e in this.entitiesToCheck) {
             var entityToCheck = this.entitiesToCheck[e];
@@ -61,14 +57,23 @@ GameLib.D3.ComponentTriggerBoxSphere.prototype.onUpdate = function(
                 entityToCheck.position.z
             );
 
-            spherePosition.applyMatrix4(ComponentTriggerBoxSphere_BoxInverseTransform);
+            var maxScale = Math.max(
+                entityToCheck.scale.x,
+                Math.max(
+                    entityToCheck.scale.y,
+                    entityToCheck.scale.z
+                )
+            );
 
             var sphere = new THREE.Sphere(
                 spherePosition,
-                entityToCheck.mesh ? entityToCheck.mesh.geometry.boundingSphere.radius : 1
+                entityToCheck.mesh
+                    ? entityToCheck.mesh.geometry.boundingSphere.radius * maxScale
+                    : 1
             );
 
-            if(parentEntity.mesh.geometry.boundingBox.intersectsSphere(sphere)) {
+
+            if(bb.intersectsSphere(sphere)) {
 
                 if(this.entitiesInside.indexOf(entityToCheck) <= -1) { // check if this is the first time the entity enters the trigger
                     this.entitiesInside.push(entityToCheck);
diff --git a/src/game-lib-component-trigger-sphere-sphere.js b/src/game-lib-component-trigger-sphere-sphere.js
index 2ad9bdb..9cc5b97 100644
--- a/src/game-lib-component-trigger-sphere-sphere.js
+++ b/src/game-lib-component-trigger-sphere-sphere.js
@@ -1,5 +1,7 @@
 //
 // uses the entity position + mesh bounding sphere to check if intersections
+// this is a bit jerky to use.
+// so please feel free to use the box-sphere & box-box triggers instead.
 //
 GameLib.D3.ComponentTriggerSphereSphere = function(
     componentId,
@@ -54,9 +56,16 @@ GameLib.D3.ComponentTriggerSphereSphere.prototype.onUpdate = function(
         );
 
         if(entityToCheck.mesh && entityToCheck.mesh.geometry.boundingSphere) {
-            ComponentTriggerSphereSphere_targetBoundingSphereRadius = entityToCheck.mesh.geometry.boundingSphere.radius;
+            var maxScale = Math.max(
+                entityToCheck.scale.x,
+                Math.max(
+                    entityToCheck.scale.y,
+                    entityToCheck.scale.z
+                )
+            );
+            ComponentTriggerSphereSphere_targetBoundingSphereRadius = entityToCheck.mesh.geometry.boundingSphere.radius * maxScale;
         } else {
-            ComponentTriggerSphereSphere_targetBoundingSphereRadius = 0.0;
+            ComponentTriggerSphereSphere_targetBoundingSphereRadius = 1.0;
         }
 
         // do sphere sphere collision