Implementing Self-Recompilation — Handmade Hero — Episode Guide

0:07Recap

0:53Plan for today

2:32Features and limitations of our current radial menu

4:01We will build our UI around the debug features we already have

5:50Let's find a way of turning debug features on and off easily from the debug interface

6:31Quick review of the debug camera

7:20There's a conflict between the reloading system and the debug event array collation

8:33Maybe we should flush all events after a reload

10:12Flushing the array event buffer

12:15The DLL reloading already cleared that buffer. We only need to restart the collation process

14:00Moving the ExecutableReloaded flag from the game input to the game memory

14:59Testing it

15:39The current way of switching between regular and debug cameras is inconvenient

16:37We would prefer to automate the process of changing the code and recompiling it

18:02We will collect all switches inside the globally accessible handmade_config.h

20:03Be banana-cakes^α

20:21Assigning a type to config switches

20:56Rewriting the config file from inside the game code

22:01Implementing WriteHandmadeConfig

23:31We resort again to _snprintf_s to minimize the amount of CRT functions we will have to replace later

27:22Rewriting the config file after every debug UI action

28:17We want the game to recompile itself

28:35The platform layer will allow us to execute build.bat via DEBUGExecuteSystemCommand

32:25The OS function we are looking for is CreateProcess

38:30Testing it. It does not work

38:46CreateProcess returned false

39:29Using GetLastError to find out why

40:31Providing an explicit path to cmd.exe

41:32It works now

41:42Toggling the value of DEBUGUI_UseDebugCamera in the config file

42:39Introducing the Uber-Debug-UI!

43:08Getting rid of the compilation window pop-up

44:20Hiding the window using the wShowWindow flag inside the startup info parameter

46:40It works!

46:50Getting information about the state of the the compilation process

50:00We will use WaitForSingleObject to find that information

52:54Querying the platform layer about the state of the compilation process

55:48"We don't care big it is"^β

56:12Implementing DEBUGGetProcessState

58:31Using GetExitCodeProcess to confirm the completion of the compilation

1:02:05Signalling the ongoing recompilation graphically

1:03:21Find that platform_api doesn't have DEBUGGetProcessState^γ

1:03:38Apologise for the slang^δ

1:04:49Q&A

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1:04:49Q&A

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1:04:49Q&A

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1:05:31powerc9k Why be able to compile from the game if we can do it from the editor? Is it just to be cool?

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1:05:31powerc9k Why be able to compile from the game if we can do it from the editor? Is it just to be cool?

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1:05:31powerc9k Why be able to compile from the game if we can do it from the editor? Is it just to be cool?

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1:06:30ChronalDragon Compile in mr4th's editor and do all of the game development work from in-game?

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1:06:30ChronalDragon Compile in mr4th's editor and do all of the game development work from in-game?

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1:06:30ChronalDragon Compile in mr4th's editor and do all of the game development work from in-game?

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1:06:51andsz_ I like how it's "STARTUPINFO", but "PROCESS_INFORMATION". Inconsistency even in a single small part of the WinAPI... Do such things annoy you in a "professional" API?

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1:06:51andsz_ I like how it's "STARTUPINFO", but "PROCESS_INFORMATION". Inconsistency even in a single small part of the WinAPI... Do such things annoy you in a "professional" API?

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1:06:51andsz_ I like how it's "STARTUPINFO", but "PROCESS_INFORMATION". Inconsistency even in a single small part of the WinAPI... Do such things annoy you in a "professional" API?

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1:07:33Mr4thDimention Why are we writing to a code file instead of just passing -D to the build line? Seems like it would be a little easier, although I have to admit you made that look pretty easy

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1:07:33Mr4thDimention Why are we writing to a code file instead of just passing -D to the build line? Seems like it would be a little easier, although I have to admit you made that look pretty easy

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1:07:33Mr4thDimention Why are we writing to a code file instead of just passing -D to the build line? Seems like it would be a little easier, although I have to admit you made that look pretty easy

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1:08:24cubercaleb Why not use system() instead of CreateProcess()?

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1:08:24cubercaleb Why not use system() instead of CreateProcess()?

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1:08:24cubercaleb Why not use system() instead of CreateProcess()?

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1:09:43glaman1605 Do you plan on reading the original config file and then rewrite with modified values?

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1:09:43glaman1605 Do you plan on reading the original config file and then rewrite with modified values?

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1:09:43glaman1605 Do you plan on reading the original config file and then rewrite with modified values?

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1:09:52TheSizik Why not just set a boolean variable instead of recompiling a #define?

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1:09:52TheSizik Why not just set a boolean variable instead of recompiling a #define?

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1:09:52TheSizik Why not just set a boolean variable instead of recompiling a #define?

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1:10:38ejunkie64 Will there be a dev console?

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1:10:38ejunkie64 Will there be a dev console?

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1:10:38ejunkie64 Will there be a dev console?

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1:10:50Pseudonym73 Also, system() runs a program through CMD.EXE, which is yet another dependency

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1:10:50Pseudonym73 Also, system() runs a program through CMD.EXE, which is yet another dependency

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1:10:50Pseudonym73 Also, system() runs a program through CMD.EXE, which is yet another dependency

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1:11:57Lkey144 The chat recommended CREATE_NO_WINDOW as a process creation flag. You could probably use that instead of the minimized window

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1:11:57Lkey144 The chat recommended CREATE_NO_WINDOW as a process creation flag. You could probably use that instead of the minimized window

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1:11:57Lkey144 The chat recommended CREATE_NO_WINDOW as a process creation flag. You could probably use that instead of the minimized window

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1:12:38Trystan34 What is in the bat file that is run?

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1:12:38Trystan34 What is in the bat file that is run?

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1:12:38Trystan34 What is in the bat file that is run?

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1:12:48powerc9k Why does it zoom out?

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1:12:48powerc9k Why does it zoom out?

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1:12:48powerc9k Why does it zoom out?

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1:13:02Radar_CS Are you using sublime?

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1:13:02Radar_CS Are you using sublime?

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1:13:02Radar_CS Are you using sublime?

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1:13:07Quantumplation Can you add a radial menu for debug camera, instead of piggybacking off toggle graph? It's bugging me

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1:13:07Quantumplation Can you add a radial menu for debug camera, instead of piggybacking off toggle graph? It's bugging me

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1:13:07Quantumplation Can you add a radial menu for debug camera, instead of piggybacking off toggle graph? It's bugging me

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1:13:19Shut down

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1:13:19Shut down

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1:13:19Shut down

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