How to make object that unlocks the baricade

[MrJerody]

Hi, I have a question. I’m trying to make a 2D game. I have an object that I want to use as a key to open a path that is blocked by a barricade. I’ll put pictures here so you can visualize it. I’m using blueprints and I don’t know how to make it so that if I pick up a coin and go to the barricade it disappears and if I don’t have a coin it doesn’t disappear.

[Get_DOVAH_it]

Greetings @MrJerody !

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Just so you’re aware, this topic has been moved from the International forum category to the Development - Programming & Scripting - Blueprint forum category.

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[Manudog]

Hello MrJerody,

You must create a variable of type bool, you set this variable to true when you pick up the key.
On your barricade you add a Trigger, and if the bool is True, you can pass.

[MrJerody]

I’m sorry, but I don’t quite get it. I added a bool to the coin. I don’t know what to do with it. Maybe a sample of my blueprint would help.

So this is a coin

and this is barricade

[Manudog]

Be careful, you must set your bool to True before destroying your Actor, otherwise it cannot access your variable anymore.
Here is an example you can use:

BP Coin

BP Barricade

[MrJerody]

How did you get BP Coin at the BP Barricade?

[Manudog]

You simply create a variable of type BP_Coin

[MrJerody]

It threw this error.

And my blueprints are like this
BP Barricade

BP Coin

[Manudog]

In the BP_Barricade, in the Event Begin, cast to the BP_Coin and set your variable with.

[MrJerody]

Thanks for helping me. I’m a beginner so it’s harder for me.

Now it’s throwing this error.

BP Barricade

[Manudog]

Do you have more than one BP_Coin in your scene?

[Manudog]

Since you are destroying your BP_Coin I think it is best to put your variable in your PB_Player

[MrJerody]

No, I don’t.
If that’s what you mean.

[Manudog]

Create the Bool variable in your BP_Player. When you pick up the coin, you pass it to True and you check at the end in the BP_Barricade.

BP Coin

BP Barricade

[MrJerody]

I’m sorry but i don’t get it.

I have created this variable in my BP_Player.

BP_Coin

BP_Barricade

[Manudog]

In the Bp_Coin, you have to get the variable from the output node (blue).
And in BP_Barricade, you didn’t do anything like I explained.

[MrJerody]

I didn’t know what to do in BP_Barricade. But now I understand that I have to get the variable out of it (blue) just like I did with the coin.

But now I can’t pick up the coin.

And it throws error again

I don’t think I’ll ever be able to do that.

BP_Barricade

BP_Coin

[Manudog]

You have to delete the Picked variable in BP_Barricade and create it in your Player_Astronear.

[MrJerody]

I already did that.

Here is BP_Player

Here is BP_Coin

And here is BP_Barricade

[Manudog]

Your BP_Barricade is not good, look at what I showed you in a previous post.

How to make object that unlocks the baricade

Create the Bool variable in your BP_Player. When you pick up the coin, you pass it to True and you check at the end in the BP_Barricade. BP Coin [BP_Coin] BP Barricade [BP_Barricade]