I have been using Unreal Engine more than five years now, working mostly as a game developer / programmer.

Some structures, data and tricks are recorded below. To always have quick access to them to save time.

Blueprints Vector

Vector 2 Points Part 1. Forward vector between two points

Line trace from forward vector.

Vector 2 Point Part 2. Forward Vector VS Unit Direction.

Vector 2 Point Part 3. Rotate Vector.

Vector 2 Point Part 4. Vector Cosine Angle 2D.

A introductory tutorial on how to set up UIs using C++ and Blueprints.

Vectors. Cross Product.

Vector. 0-360 Degrees.

Line Trace

Line Trace Part 1. Forward Vector.

Line Trace by Channel Part 2. Trace Channel.

Line Trace from Camera Part 4. Viewport Size.

Camera Line Trace Part 5. Button Light Switch.

Math

Dot Product Part 1. ACOSd

Rotate Vector Around Axis.

Get a point on the circle with existing degree.

Animation

Animation Part 1. Control Rig

Animation Part 2. Hair Control Rig.

Animation Part 3. First Simple Sequence Animation.

Animation Part 4. Connect the Ctrl Rig to the finished animation.

Animation Part 5. Connect Accessories To Character for Sequence Animation.

Tutorials

Door Open and Close.

Elevator with interactive buttons.