Improved collision detection in 28, learned what we need to study in the future and on the go.

It would take around 3-6 months from start to finish for porting a game to console. For preparation / publishing phase would take around 2-4 weeks.

Dod design would need a later-in-the-process of adding another wrapper of structure data (but it's not clear yet) to make data fitting inside the cacheline which can be 64 or 128 bytes mostly.

C build system especially about static keyword will hide definitions from other translation unit to see it when compile, per se making it private in C language. It will be in handy when compile multiple .c source files.