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33 lines
1.8 KiB
Markdown
33 lines
1.8 KiB
Markdown
# Grind camera publication
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The camera adapter previously published Grinds0 as world X and Grinds96 as
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world origin even during active grinds. The native movement compass82DF3AC0
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uses Grinds0 directly while grinding, and GrindAnchor82DF2C78 consumes Grinds96.
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This explains a heading snap followed by an unchanging direction, with an
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incorrect positional anchor as well.
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The live adapter now supplies:
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- Directed primitive tangent:82D87460 calls82D37048, flips against velocity,
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and preserves the previous direction when absolute along-speed is below
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.1 and the direction dot is below -.9. These literals are820641A8/822F8E94.
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- Contact target:82DF0640 initializes on entry, extrapolates the previous two
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targets on changes to grind type or primitive midpoint, then decays the
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resulting offset by .95 each physical tick. Constructor82DF24CC loads this
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coefficient from82072818. Inactive ticks invalidate target history.
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This is contact discontinuity conditioning, not a general camera latency
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filter. Existing camera compass, anchors and authored camera graph remain the
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consumers. Straight authored/imported primitives supply their actual endpoints.
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Evidence: local TU3 native image
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`Skate3Research/research/reverse-engineering/XexDump/default_82000000_011B0000.bin`,
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base82000000, SHA256
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`f4aa113eb541bfba03dbc108cf5ab43f58c965b20fa3b82f9c40938a0ad841c4`.
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Instruction listings were extracted from the generated PPC source into
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`logs/biped-82D87460.txt`, `logs/biped-82D37048.txt`,
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`logs/biped-82DF0640.txt`, and `logs/biped-82DF2130.txt`; coefficients were
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cross-checked directly against image bytes. Behavior above is observed static
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code; the reported visual symptom is consistent with the missing publications.
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No reference gameplay trace or automated gameplay testing was performed.
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