In this chapter, we enhanced player experience by adding a HUD that tracks the player's interaction with the environment. In doing so, we developed another conduit through which we can communicate information to the player of our game. By now, we have the skeletal structure of a First Person Shooter, including guns that shoot, targets that explode, and a UI that exposes the state of the world to the player. We have already come a long way from the initial test scene, which featured minimal player interaction.

In the next chapter, we will begin transitioning from building the foundation of our game structure to constructing the design of our game. The core of any game is made up of the rules that the player must follow in order to create a fun experience. While the game, in its current form, features some basic rules that define how the targets react on being shot, the overall experience lacks a goal for the player to achieve. We will rectify this by establishing a win condition for the player, as well as providing additional constraints that make the experience holistic and consistent.