Hi man,
You can create a widget with a button.
when your character get the begin-event, create this widget and add it to the viewport. set also the mouse visible witht the node “set mouse visible”.
For the button , look in the detail and add a on-click-event.
Now for example:
“Get actor of class” , and get the reference to the player character.
from there you can call custom events like, DetonateBomb. (you have to make them first…)
Basically you store the bombs in an array when you spawn them.
You have to make an array of the actor-bomb type, and when you spawn a bomb, you pin the return node ad append it to the array.
In your character , add a custom event DetonateBomb,
add a loop for each- and connect the array of bombs, then for every actor-bomb, call the event-Explode! (or whatever you use to make them boom)
Once done, clear the array.