How do I make this locked doors open

Hi, i want to make the locked door open 1 by 1 when the player push the right button.

Here's the example

There's a 1 sprite named locked door (red blue green) and each button to open the door with the same color

When player steps on the first one (red button), the red door opens

When player steps on the second one (blue button), the blue door opens

When player steps on the third one (green button), the green door opens

But when the player didn't push the button in the right order, the door will be locked again (red blue green)

Track the colour of the last-pressed switch by adding a variable to the player. A string-variable would work for this - we'll call it Player.LastButtonColour. You'll need another variable on the button to track what colour should have been pressed previous to it in the sequence - we'll call it Button.PreviousSequenceColour

When the player jumps on a button, check the Player.LastButtonColour against Button.PreviousSequenceColour. If they match, open the matching door, and set Player.LastButtonColour to represent the button's colour. If they don't match, re-lock all doors in the sequence.

Track the colour of the last-pressed switch by adding a variable to the player. A string-variable would work for this - we'll call it Player.LastButtonColour. You'll need another variable on the button to track what colour should have been pressed previous to it in the sequence - we'll call it Button.PreviousSequenceColour

When the player jumps on a button, check the Player.LastButtonColour against Button.PreviousSequenceColour. If they match, open the matching door, and set Player.LastButtonColour to represent the button's colour. If they don't match, re-lock all doors in the sequence.

A string-variable? That's new to me. Can you create a .capx of how this would work?

Track the colour of the last-pressed switch by adding a variable to the player. A string-variable would work for this - we'll call it Player.LastButtonColour. You'll need another variable on the button to track what colour should have been pressed previous to it in the sequence - we'll call it Button.PreviousSequenceColour

When the player jumps on a button, check the Player.LastButtonColour against Button.PreviousSequenceColour. If they match, open the matching door, and set Player.LastButtonColour to represent the button's colour. If they don't match, re-lock all doors in the sequence.

Ahh, i get it.

Thanks man!

A string-variable? That's new to me.

Objects can carry variables, which must be either number (float or integer), string (alphanumeric), or boolean (true/false) values according to a preset specified by the developer:

https://www.scirra.com/manual/73/instance-variables

Thanks man!

No worries, hope it works out

So... it's just an instance variable. OK.