Day 19 complete

docs/Day 019.md

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+# Day 19
+
+I started to do some cleanup while also following along.  
+`handmade_win32.cpp` now just holds the cpp build order when running the build script for unity builds.  
+
+I want to eventually support segemnted builds as well, that way I can make sure there isn't some unhandled usaged of a global or some other symbol in one of the source files.  
+Evetually I can also use gencpp perform some static analysis to make sure differnt layers are not accessing symbols that they should not.
+
+I started to setup also pulling the polling of input out to a different function.  
+There are a few routes to go about it:
+
+* Make a separate function per input type: ( poll_keyboard, poll_xinput, poll_jsl ).
+* Make a single function that handles all input polling (poll_input or process_input).
+* (problably more...)
+
+I'm gravitating toward the second option, the amount of content is not that large, and would keep the code all together along with its control flow.
+
+Overall this was pretty brutual to follow along with for the vod. Thankfully handmade-notes exists..
+Reading the end of the notes page for the episode showed a forum link to mmozeiko discussing use of the Windows Core Audio API to alleviate the large amount of latency required to operate with DirectSound.  
+I'm going to wait until after day 20 since Casey has that one titled "Debugging the Aduio Sync"