51 lines
2.6 KiB
Plaintext
51 lines
2.6 KiB
Plaintext
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[video member=cmuratori stream_platform=twitch stream_username=handmade_hero project=code title="Variable-Pitch Sine Wave Output" vod_platform=youtube id=8y9nPk1c45c annotator=jacebennett annotator=Miblo annotator=schme annotator=theinternetftw]
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[1:14][Review DirectSound init and square wave]
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[2:28][Story Time: The First Game Jam]
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[8:56][The moral of the story]
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[11:26][How to approach debugging the sound code]
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[15:40][Square vs Sine Wave]
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[17:33][Generating a Sine Wave]
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[17:56][Tangent: Intro to Floating Point]
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[20:38][C Libraries for sin]
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[24:55][Story Time: Before floating point hardware]
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[26:43][Tangent: Fixed-point math]
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[32:35][Tangent: IEEE Floating-point representation]
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[42:15][Implementing the Sine wave test tone]
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[48:09][Lets run it]
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[49:01][Debugging in earnest]
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[57:39][A different error]
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[57:58][Refactor for clarity]
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[1:03:46][Where did it go?]
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[1:04:08][Eureka!]
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[1:05:22][Victory]
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[1:09:52][Q&A]
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[1:10:07][In D this bug couldn't have happened. D always initializes variables.]
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[1:13:36][How do you know that ByteToLock is far enough ahead of the PlayCursor?]
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[1:15:40][Try \[compiling with\] -W3 or -W4]
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[1:15:54][Where do I look for standard C library docs?]
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[1:16:39][I think you can now remove the ByteToLock == PlayCursor case.]
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[1:17:58][Will we use the sin() in the actual game?]
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[1:18:07][Is autocomplete/intellisense a bad idea? You don't seem to use it.]
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[1:19:25][Re-explaining the last bug]
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[1:20:50][Is it possible for bits to spill over into neighboring variables? For example, when shifting.]
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[1:26:26][Will we use the same output buffer to overlay several sounds?]
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[1:26:33][Change tone frequency based on input, and the bug will resurface.]
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[1:26:37][Casey: That's a different bug, lets look at it.]
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[1:30:43][Fixed]
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[1:30:57][Diagramming the frequency change issue]
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[1:35:18][Let's map the pitch to the sticks.]
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[1:37:00][Theramin Simulator 2014 Tech Demo]
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[1:37:13][Let's lower the latency]
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[1:42:49][If we could live with a slightly less accurate sin, we could approximate it with polynomials.]
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[1:45:08][Will the art and audio be released into the public domain?]
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[1:46:20][Is it a good idea to use fixed point math for games that require deterministic simulation for multiplayer? Or can you use floating point across systems?]
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[1:48:48][Sometimes you use 'bool' and sometimes 'bool32']
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[1:49:30][Are you going to use ETW to log context switches for the game?]
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[1:49:42][Is this the audio api we will be using to ship the game?]
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[1:50:01][Is it safe to call DirectSound without initializing COM?]
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[1:50:47][Can we do an episode on emacs?]
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[1:51:33][Fix: XInput - missing dependencies]
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[1:53:45][Fix: Arithmetic for stick values]
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[2:01:55][Sign off]
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[/video]
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