AnachronautandClaude Opus 5
310804e267
Two things, one certain and one likely. THE CERTAIN ONE IS NOT THE WINDOW'S FAULT. Snake's pause loop said "at the emulated rate this is about an eighth of a second", and it was, when a cycle was one instruction. A cycle became one memory access, every loop in the machine got dearer, and this one silently doubled: the game has been running at half the speed it documents ever since, in a terminal as much as in a window. Measured rather than guessed - the inner loop is a DECA and a BNA, one byte and three, so four cycles a turn, and a whole run went from 3,848,610 cycles to 1,920,504 when the outer count came down from 256 to 122. Almost exactly half, which is what the arithmetic said it would be. That is the cost model change reaching a program nobody thought to re-measure. Worth looking for others: any loop tuned by eye before that change is running at half its intended speed. THE LIKELY ONE is the frame limiter. Without the vsync hint, Raylib sleeps towards sixty frames a second on its own clock, which beats against a display refreshing on its own - frames shown twice or skipped, and the machine handed an uneven number of cycles each time, since it takes its budget from the wall clock. The hint puts presentation in step with the screen. SetTargetFPS stays for a driver that ignores it. Snake is one byte bigger, because RSTB became INIB. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01E2JrLzFvuFX9fgi1LDRjrW
25 lines
643 B
Plaintext
25 lines
643 B
Plaintext
CosmOS
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> nothing is loaded
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> greet.sbx 211
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hello.sbx 53
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Life.sbx 1396
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Snake.sbx 2164
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Keys.sbx 664
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Say.sbx 156
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Break.sbx 149
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notes.txt 21
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8 files
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> load what?
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> no such file
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> not a program
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> loaded, starting at 4000
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> a program, loaded off a disk, running on the system that loaded it
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what should I call you? hello, Anachronaut. that is all I do.
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finished
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> a program, loaded off a disk, running on the system that loaded it
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what should I call you? hello, Claude. that is all I do.
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finished
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> halted
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Execution halted.
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[exit 0]
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