This book provides a solid starting point for a 2D collision library.
The brevity of the book is appreciated it provides only the information needed in a concise and straight forward way.
Ive come back to it year after year when the need arises to build a new codebase. Its functions are clean and efficient and build on one another in a way they don't require external code to function.
Id recommend this book to anyone with a need to build their own codebase Its my goto first step and Ive implemented its functions in mono cs js and c++. one day I'll port it to 6502 but not today.
When you get to the clipping at the end something in your brain will click.
10/10 cant recommend enough.