42 lines
1.9 KiB
Python
42 lines
1.9 KiB
Python
"""原图变更后运行此脚本，更新七日活动的透明区域点击数据。需要 Pillow。"""
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import json
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from pathlib import Path
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from PIL import Image
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ROOT = Path(__file__).resolve().parents[1]
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images = sorted((ROOT / "assets/seven_day_gift/texture").glob("*.png"))
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images.append(ROOT / "assets/UI/Cat/cat.png")
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masks = {}
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for path in images:
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meta = json.loads(path.with_suffix(".png.meta").read_text(encoding="utf-8"))
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alpha = Image.open(path).convert("RGBA").getchannel("A")
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for frame in meta["subMetas"].values():
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x, y, w, h = (frame[k] for k in ("trimX", "trimY", "width", "height"))
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pixels = alpha.crop((x, y, x + w, y + h))
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rows, spans, lookup = [], [], {}
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for row in range(h):
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runs, start = [], None
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for col in range(w + 1):
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solid = col < w and pixels.getpixel((col, row)) >= 16
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if solid and start is None:
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start = col
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elif not solid and start is not None:
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runs.extend((start, col))
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start = None
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key = tuple(runs)
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if key not in lookup:
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lookup[key] = len(spans)
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spans.append(runs)
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rows.append(lookup[key])
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masks[frame["uuid"]] = dict(width=w, height=h, rows=rows, spans=spans)
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output = ROOT / "assets/seven_day_gift/SevenDayHitMasks.ts"
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output.write_text(
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"// 自动生成的原图 Alpha 命中数据（阈值 16/255），勿手改；更新图片后运行 tools/generate-seven-hit-masks.py。\n"
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"export interface SevenDayHitMask { width: number; height: number; rows: number[]; spans: number[][]; }\n"
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"const masks: { [uuid: string]: SevenDayHitMask } = "
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+ json.dumps(masks, separators=(",", ":")) + ";\nexport default masks;\n",
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encoding="utf-8",
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)
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print(f"Generated {len(masks)} masks, {output.stat().st_size} bytes")
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