[ue5] blueprint making simple mine tutorial

This is a small effect that I researched myself , But it can't cope with complex situations .
The effect of Mines —— The player presses the key to place a mine ,AI Explosion after encountering .

Split the whole process ：
1. The player presses the key to place the mine model .
2.AI After encountering mines ,AI disappear .
3. Mines play explosion effects , Disappearance of Mines .

One 、 Press the key to place mines

1. Make mine blueprints

Create a Actor The blueprint , Add any MESH Components as models .

Add trigger , You can choose any shape .
（ When touching this trigger , Play the landmine incident ）

The size of the trigger is larger than the model , Otherwise, when the model collides ,AI Unable to trigger .

2. Press the key to place mines

Open the player character blueprint , Right click input E, stay “ Keyboard events ” Add “E” event .

Press E Key will trigger this event .

Drag and drop E The event Pressed Pin , establish “ Generate Actor” function .

It's generating Actor Of class Choose the mine blueprint we created

The name of the function will show the class we selected .

Next, we need to give the location of this function , It can be generated at the current player position .
Create get Actor The position function , And generate Actor Of Spawn Transform Pin to pin , A vector transformation will automatically appear in the middle .

After placement , You will find the camera bounced off , I can't see the players .
This is because mines collide , Play the character away .

Select from the mine blueprint mesh Components , In the details panel, change the collision preset to NoCollision, The collision of mines is closed .

Play again , This time the mine didn't bounce the player away .

Two 、AI Hit a mine explosion

1. establish AI Communicate with mines

We can use AI The trigger of the mine overlaps with the trigger of the mine to create an explosion event , however AI Will be deleted after triggering , In order to ensure that both disappear at the same time , Still need to be in AI Establish blueprint communication with mines , To inform the mine explosion .
Right click > The blueprint > Blueprint interface , Establish blueprint communication .

The name IF_ The explosion .

Open blueprint communication , Modify the function name as explosion.

such , Blueprint communication is established .

2.AI The explosion

open AI Character blueprint , Select capsule components , Add the event when components begin to overlap in the details panel .

Execute pins when dragging components to start overlapping , Create what we just set Explosion function ,other actor Connect with the goal .
In this way, the mine is notified to start the explosion .

Similar to the method of generating mines , stay AI The current position generates an explosion effect ,Class Choose your own explosion Blueprint is enough .

And then to delete AI Model , establish Delete Actor function .

AI The explosion effect of is finished ：

3、 ... and 、 Mine explosion

Just make the mine model disappear .
Open mine blueprint , We are going to call the explosion . Input explosion, Note that we have to choose events Explosion.

Destroy directly Actor That's it .

The effect is achieved ！

I said before. , This is just a simple effect , If there are multiple colliders , Will trigger an explosion .
So you also need to filter triggers .