Door Keypad Interaction

Hi Christina,

In the attached example, I have created five variables, Keypress, Keypress1, Keypress2, Keypress3 and Keypress4, which are set to 0, -1, -1, -1 and -1 respectively. I have also placed 100% transparent rectangles over each of the buttons on the keypad.

When the user clicks on a number on the keypad, Keypress is set to the value of that button and then Keypress1 is set to the value of Keypress provided Keypress1 = -1. If Kepress1 > -1 (i.e. it already has a number allocated to it), Keypress2 is set to the value of Keypress provided Keypress1 > -1 AND Keypress2 = -1  and so on.

This ensures that each click allocates a number in sequence until four numbers have been selected. At this point, if the correct sequence of numbers has been keyed in (in my example that is 2 4 6 8) the green light comes on and the red light goes out, signifying that the door has been unlocked.

The Reset button resets all variables and re-locks the safe. The Correct Code button (for those who can't crack it) shows the correct code and unlocks the safe.

I have also set up the Keypress 1-4 variables to be displayed above the keys on the keypad when their value changes, so that the user can see the code they have entered.

Hope this helps.