Creating multiple buttons for one door
This tutorial will detail the basics of getting a door to open only when two (or more) buttons are activated.
Create your doorway and two buttons by following the tutorial for creating a button and linked door through step 5 of the section titled "Triggers".
- The name of the movement door under the button (originally button_top_door)
- The parent of your button_top_model (same as above)
- The name of the two triggers button_trigger_player and button_trigger_box
Next, complete steps 7 and 8 under Triggers on the other tutorial for each button, making sure that you are using the appropriate button#_* prefix.
Create a math_counter entity, and put it near your door. Set the following properties:
Property Name Value Name buttoncounter Maximum Legal Value 2
Now go to the Outputs tab and set the following outputs:
Now go to each of your button_top_door brush entities and set these outputs:
The counter starts at zero. When you activate a button by any means, the button adds 1 to the counter. When you deactivate a button, the button subtracts 1 from the counter. When the counter reaches the maximum value 2, it opens the door and sets the minimum value as 1. When the counter reaches this minimum value, it closes the door and clears the minimum value.
This scenario can be easily adapted to have more requirements, different requirements, or different actions.