I have a cube which has its box collider set to 'is Trigger' and a Rigidbody component (to make the Trigger work) which moves forward towards some stationary objects which also have box collider components.
I am going to have a camera moving towards these objects and want the objects to fade to transparent when they approach. For this, I have created a trigger that will cause any objects that collide with it to gradually become transparent. So far, the trigger detects the objects fine and on doing so creates a temporary renderer object to reference each object's renderer. I then create a Color object with transparency to apply to their renderer.
Now, the objects change colour just fine but their alpha does not change. I have a suspicion that I have to use a shader for this, but am not sure how to apply one if this is the case.
Also, if anyone can suggest a more elegant method for fading objects approaching the camera then that would be great too. I would like to try to avoid using iTween as am trying to learn the ropes.
Thanks in advance.
Thanks for your suggestion, they both work which is great.
The main problem appeared to be that I needed to have a Transparent Shader type for the material applied to the Obstacles in order to change the Alpha value. I was using the default Diffuse Shader.