Flocking is a steering behavior that combines Separation, Cohesion, and Alignment. Separation behavior avoids other nearby agents. Cohesion behavior keeps the agents in a group. Alignment behavior averages the forward direction by aligning with nearby agents.
What we will do here is replicate the steering behavior, flocking, in blueprint. We will also use UMG to aid the manipulation of weights for each behavior. Let's start now and create the variables we will need in this part of the chapter.
We must first start off by creating the variables necessary to calculate individual behaviors. Then, we must add the results to normalize a final forward direction for our agent.
Let's focus on our RollingGameMode game mode and add the three new global variables we will have to use later in this chapter. In correlation to the three behaviors, we need to create GlobalAlignment, GlobalCohesion, and GlobalSeparation by performing the following steps:
Open RollingGameMode...