UE4 random generation of items

This is just a brief explanation of the probability of item generation , You can expand on this basis according to your own needs

Create two structural blueprints

Respectively represent the position of the object and the object model to be generated

stay ST_Location Create a Vector Variable

stay ST_Item Create two variables inside

They are the probability of the current item and the probability of this item Actor quote

Then according to the blueprint of these two structures , Create two data tables

stay DT_Location Add five lines to it

Then we're going to set positions for these five lines

Drag five cubes out of the map , Set the positions of the five cubes to DT_Location

The location can be copied and pasted directly

 

Then pull out five cubes

Create four actor The blueprint （ add to StaticMesh, And then put Mesh Change it to the model you want ）, Model casual , Not the same

Here is a blueprint for demonstration , But if you have to generate a lot of items, it will be troublesome , The solution is to create a parent blueprint through the item ID To modify the blueprint StaticMesh

  Then set it up DT_Item

 

BluePrint Set them to the four item blueprints just created , The probabilities are 10,20,30,40

And then create a GameMod

  Change the game mode in the world outline to MyGameMod

We are GameMod It realizes the operation of generating items

Create a function , Name it GenerationItem, Traverse the previously created location data table

Every time you get a location, you randomly generate an item , Create another function named RandomItem, This function is used to randomly generate a class reference of an item

Create a local variable in this function Arr, The type is Actor Reference array

The principle is Arr The number of corresponding probabilities of items added to the array , And then we'll make a random item

Then back GenerationItem This function is called in the function to generate items

In the event icon begin play Call back GenerationItem that will do

Run to generate items as follows

If there is anything wrong, please correct it in the comment area

If you have any questions, you can ask me in the comment area