Claude (auto-RE)
9a86a09f8d
u32 count at 0x14, then fixed 60-byte entries of [name | 4 flag words | pivotX | pivotY | 0]. The table lists both .t32 sprites and .rat records, so it is the screen's element list. Verified: for all 7 .t32 entries in the tutorial pause bundle the declared pivot is exactly half the decoded texture's dimensions, 7/7 with no mismatch. That also settles what the pair at 0x50/0x54 of a .rat record is — a .rat simply opens with one of these declarations. The language split is visible inside one bundle: the English build's .t32 declarations carry correct English pivots while its .rat declarations carry Japanese-derived ones, so the sprite table is regenerated per language and the layout layer is inherited from the Japanese master. Adds tools/re-capture/ratc_decls.py (parse the table, check pivots against the decoded textures). Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
42 lines
1.6 KiB
Python
42 lines
1.6 KiB
Python
#!/usr/bin/env python3
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"""Parse a RATC bundle's header SPRITE DECLARATION TABLE: u32 count at 0x14, then
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fixed 60-byte entries of [name, NUL-padded | 4 u32 flags | pivotX | pivotY | 0].
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Check each pivot against half the decoded texture's real dimensions."""
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import struct, sys, glob, re, os
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def decls(d):
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n = struct.unpack_from(">I", d, 0x14)[0]
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out = []
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for i in range(n):
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o = 0x20 + i * 60
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if o + 60 > len(d): break
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name = d[o:o+28].split(b"\0")[0].decode("ascii", "replace")
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px, py = struct.unpack_from(">II", d, o + 48)
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out.append((name, px, py))
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return n, out
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def texmap(prefix):
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t = {}
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for f in glob.glob(f"pause-tex/{prefix}_*.png"):
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m = re.match(rf".*/{prefix}_(.+)\.t32_(\d+)x(\d+)\.png", f)
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if m: t[m.group(1) + ".t32"] = (int(m.group(2)), int(m.group(3)))
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return t
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for path, prefix in [(sys.argv[1], sys.argv[2])]:
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d = open(path, "rb").read()
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n, ds = decls(d)
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tm = texmap(prefix)
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print(f"{os.path.basename(path)}: count={n}, parsed={len(ds)}")
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ok = bad = miss = 0
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for name, px, py in ds:
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if name in tm:
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w, h = tm[name]
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hit = (px == w // 2 and py == h // 2)
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ok, bad = ok + hit, bad + (not hit)
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flag = "OK " if hit else "MISMATCH"
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print(f" {flag} {name:28s} tex {w:4d}x{h:<4d} half {w//2:4d},{h//2:<4d} decl {px:4d},{py:<4d}")
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else:
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miss += 1
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print(f" ? {name:28s} (no decoded texture) decl {px:4d},{py:<4d}")
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print(f" => pivot == half(texture): {ok} ok, {bad} mismatch, {miss} unchecked")
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