Sequenced Sensor Demo  -  Jane Veeder, 2003

Concept: For sensors that are only to be available in a strict sequence, sequence the visibility parameter of the sensor objects. You can only click on sensor objects that are visible.

Setup:
- Create a cube for each mouseable visible object. These are the dummy objects to which the sensors will be attached.
- Create a translucent material and link all cubes to it.
- Center the cubes on your visible objects, scaling them to be slightly larger for easier mousing.
- Give each cube a mouse sensor.
- Create the reaction(s) to be triggered by each sensor and connect them. Set the expiry count to 1. If you have more than one reaction per trigger, use Group Reactions.

Add Set Parameter Reactions to Control Visibility of Cubes
- Select in turn the Second, Third, Fourth, etc., cubes (not the First) and do this to each one:
a. Select the text title for the "Visible" parameter (it should be checked ON)
b. Interact > Add Reaction > Set Parameter
c. Then go back and uncheck the (starting) visible of the cube to OFF

Connect the Mouse Sensors to Set Parameter Reactions
- Cube1 -> SetParam1 (Cube2: Visible)
- Cube2 -> SetParam2 (Cube3: Visible)
- Cube3 -> SetParam3 (Cube4: Visible)
etc.

Test and Prepare for Publishing
- Test to make sure the sensors will only appear and work in sequence
- Set the transparency parameter of the sensor-cube material to 100% when the file starts playing by giving the transparency parameter a SetParameter Reaction (to 100% transparency) and then linking that reaction to the Browser Sensor's OnInitialDownload trigger.