mirror of
https://github.com/jessicanataliagta/PSPRecomp
synced 2026-09-26 16:49:34 -04:00
Jessica_Natalia
47 lines
1.6 KiB
Python
47 lines
1.6 KiB
Python
#!/usr/bin/env python3
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"""Validate the deterministic VCS VSCL collision checkpoint from RAM dumps."""
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from __future__ import annotations
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import math
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import struct
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import sys
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from pathlib import Path
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RAM_BASE = 0x08000000
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PLAYER_ENTITY = 0x098B0940
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POSITION_OFFSET = 0x30
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EXPECTED_MIN_Z = 14.5
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MAX_Z_DRIFT = 0.01
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def read_position(path: Path) -> tuple[float, float, float]:
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data = path.read_bytes()
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offset = PLAYER_ENTITY - RAM_BASE + POSITION_OFFSET
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if offset < 0 or offset + 12 > len(data):
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raise RuntimeError(f"player position lies outside {path}")
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return struct.unpack_from("<3f", data, offset)
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def main() -> int:
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if len(sys.argv) != 2:
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print(f"usage: {Path(sys.argv[0]).name} RAM_DUMP_DIR", file=sys.stderr)
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return 2
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directory = Path(sys.argv[1])
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first = directory / "ram_vblank_001710.bin"
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second = directory / "ram_vblank_001740.bin"
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if not first.is_file() or not second.is_file():
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print("missing RAM dumps for vblank 1710/1740", file=sys.stderr)
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return 2
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p1710 = read_position(first)
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p1740 = read_position(second)
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drift = abs(p1740[2] - p1710[2])
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print(f"vblank 1710: X={p1710[0]:.6f} Y={p1710[1]:.6f} Z={p1710[2]:.9f}")
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print(f"vblank 1740: X={p1740[0]:.6f} Y={p1740[1]:.6f} Z={p1740[2]:.9f}")
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print(f"Z drift: {drift:.9f}")
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valid = all(math.isfinite(v) for v in (*p1710, *p1740)) and p1740[2] >= EXPECTED_MIN_Z and drift <= MAX_Z_DRIFT
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print("VSCL_COLLISION_VALIDATION=PASS" if valid else "VSCL_COLLISION_VALIDATION=FAIL")
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return 0 if valid else 1
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if __name__ == "__main__":
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raise SystemExit(main())
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