Setting up an environment query

In this section, you’ll be learning how to add a query to a behavior tree; in particular, we will be tweaking the dummy gunner AI brain in order to let it shoot at a target achieved by an environment query.

Note

As previously mentioned, the EQS is still an experimental feature, so you should use caution if you want to develop a game using it. At the time of writing this book, the EQS is enabled by default by using the Environment Query Editor plugin.

Creating the gym

As a first step, we are going to create a proper gym, so start by doing the following:

1. Create a level of your choice, starting from the Level Instances and Packed Level Actors, which I provided in the project template.
2. Add a BP_GunnerDummyCharacter instance; just remember to check Use Controller Rotation Yaw so it will be able to rotate and point to the target when prompted to do this.
3. Add one or more BP_Target instances so that your AI character will have...