Blueprints are Unreal Engine’s signature feature—a visual scripting system that allows developers and artists to build complex logic without writing a single line of code. On Day 15, you’ll dive into the Blueprint system, understanding how it empowers rapid prototyping and full game development.

We start by exploring the Blueprint Editor interface—breaking down the Event Graph, Construction Script, My Blueprint panel, and Components hierarchy. You’ll create your first Blueprint class, such as a door that opens when the player gets near or an object that changes color on click.

Key concepts include variables (integers, floats, booleans, vectors), functions, and events. You’ll understand how to create custom variables, manipulate their values, and trigger game events like overlaps or player inputs. You’ll also learn about Blueprint communication—how one Blueprint can talk to another using references and casting.

You’ll build practical examples: a pressure plate system, a basic enemy that follows the player, and a UI element that changes in response to gameplay. These scenarios introduce you to the idea of flow control using nodes like Branch (if statements), Timelines for smooth transitions, and Sequence for executing multiple logic steps.

Blueprints are more than just visual code—they’re modular and reusable. You’ll learn how to expose parameters for designers and use construction scripts to make actors update dynamically in the editor.

By the end of this session, you’ll have built interactive logic systems without typing a single line of C++. Whether you’re aiming for level design, systems design, or prototyping, Blueprints are your gateway to Unreal’s full potential.