GML Visual Only want to set the variable to 0 one time

[JakeW]

Hello all! I'm having a bit of difficulty right now. Basically I want a sort of spending currency thing in my game, so to do this I have some code so far, where once a user clicks on a lot it transforms into a building and creates a new instance, and once that instance exists I have it subtract -5 from the score. The only problem is that it keeps subtracting score because that instance exists. Is there a way to only make this portion of code run once and then never again?

 

[Dagoba]

Make a variable.

Create event:
paid = false;

Step Event:
if (!paid) {
paid = true;
score -= 5;
}

 

[JakeW]

Make a variable.

Create event:
paid = false;

Step Event:
if (!paid) {
paid = true;
score -= 5;
}

Thank you, but I'm a little new to Game Maker. What would this look like in DnD?

 

[Dagoba]

Uhm.. I haven't used DnD for like 8 years but I can check.

This code goes to the building object!

Create event:
Control tab > Variables > Pick the most left variable, name it "paid" and set the score to 0.

Step event:
Control tab > Variables > Pick the middle variable, name it "paid", value 0, operation: equal to
Control tab > Other > Start block (the arrow that points up)
Control tab > Variables > Pick the most left variable, name it "paid" and set the score to 1.
Score tab > Score > Pick the top-left score box, set the name new score -5 and tick relative box
Control tab > Other > End block (the arrow that points down).

Done! Hope it works.

 

[JakeW]

Uhm.. I haven't used DnD for like 8 years but I can check.

This code goes to the building object!

Create event:
Control tab > Variables > Pick the most left variable, name it "paid" and set the score to 0.

Step event:
Control tab > Variables > Pick the middle variable, name it "paid", value 0, operation: equal to
Control tab > Other > Start block (the arrow that points up)
Control tab > Variables > Pick the most left variable, name it "paid" and set the score to 1.
Score tab > Score > Pick the top-left score box, set the name new score -5 and tick relative box
Control tab > Other > End block (the arrow that points down).

Done! Hope it works.

Awesome, thank you