HowlDev.Simulation.Physics.Primitive2D 0.8.2

HowlDev.Simulation.Physics

HowlDev.Simulation.Physics.Primitive2D

Contains a few 2D-plane generics for simple calculations (it uses doubles, sometimes rounded).

Rotation2D

Holds an angle between 0 and 360 (with a precision of 2 digits). Has an extreme number of helper methods to point at given points, get distances between other angles, and to flip the angle.

Point2D

Holds two full double-precision points for X and Y. Has a number of helper methods to get distances in 2D space and midpoints, as well as some fancy operator functions.

Vector2D

Holds a Rotation2D object and a double for the velocity. Allows you to calculate points and angles off of others using operator functions.

Equation2D

Holds two coefficient values (for the slope and the y-intercept). Does most of the calculating for the Line2D. Not really intended to be used directly.

Line2D

Holds two Point2D objects in an array. Has logic for intersecting lines and retrieving intersecting points.

Circle2D

Holding a center Point2D and a radius, has methods for intersection with other circles and points.

Read the wiki (which has links to the package) and get a bunch of class definitions! Those exist here.

Changelog

0.8.2 (12/19/25)

• Vector2D has some additional operators that I hope will be useful in making my game easier.
  • *, /, and the unary - operator (to flip it immediately).
• Point2D now has as vector-getter from one point to another. (this → parameter)

0.8.1 (12/19/25)

• Circle2D now has methods to change one property and leave the rest.

0.8 (12/19/25)

• BREAKING CHANGE
  • Changed Rotation, Point, Vector, Line, and Equation to Value types (structs) because I was foolish and it's what I should have done in the first place.
    • I do kinda dislike how the API turned out, but I kept all the methods I wanted to, so...
• Created Circle2D struct with minimal methods, I'll see how many more I need to add. And I just want to get it into production to start testing it, so I'm going to publish.

0.7.5 (12/17/25)

Somehow I don't have a changelog for everything I've done up to this point. Well, I have a bunch of classes, and I'm just working through all the primitives I want to contain. Right now, I'm building it so I can make a simple Asteroids clone, so my work will focus on the primitives I need for that to work.

Also, testing the workflow.