78 lines
2.6 KiB
Python
78 lines
2.6 KiB
Python
#!/usr/bin/env python3
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"""Generate placeholder sprite PNGs for Phase A (stdlib only).
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OpenRA PngSheet slices multi-frame sheets via an embedded tEXt chunk
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"FrameSize: w,h" (see engine PngSheetLoader.cs). Real art replaces these in
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Phase D — keep the filenames.
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"""
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import os, struct, zlib
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OUT = os.path.join(os.path.dirname(__file__), '..', 'mods', 'vinylgod', 'sequences', 'assets')
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PINK = (255, 45, 150, 255)
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DARK = (30, 26, 32, 255)
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GREY = (90, 85, 95, 255)
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CLEAR = (0, 0, 0, 0)
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def chunk(tag, data):
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return struct.pack('>I', len(data)) + tag + data + struct.pack('>I', zlib.crc32(tag + data))
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def write_png(path, w, h, px, text=None):
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raw = b''.join(b'\x00' + b''.join(bytes(px[y * w + x]) for x in range(w)) for y in range(h))
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out = b'\x89PNG\r\n\x1a\n' + chunk(b'IHDR', struct.pack('>IIBBBBB', w, h, 8, 6, 0, 0, 0))
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for k, v in (text or {}).items():
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out += chunk(b'tEXt', k.encode() + b'\x00' + v.encode())
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out += chunk(b'IDAT', zlib.compress(raw)) + chunk(b'IEND', b'')
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open(path, 'wb').write(out)
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print(f'wrote {path} {w}x{h}')
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def canvas(w, h, fill=CLEAR):
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return [fill] * (w * h)
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def rect(px, w, x0, y0, x1, y1, c):
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for y in range(y0, y1):
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for x in range(x0, x1):
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px[y * w + x] = c
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def disc(px, w, cx, cy, r, c):
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for y in range(int(cy - r), int(cy + r) + 1):
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for x in range(int(cx - r), int(cx + r) + 1):
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if (x - cx) ** 2 + (y - cy) ** 2 <= r * r:
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px[y * w + x] = c
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def box_sprite(path, size, body, accent):
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px = canvas(size, size)
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m = size // 8
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rect(px, size, m, m, size - m, size - m, body)
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rect(px, size, m, m, size - m, m + 2, accent) # top trim
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disc(px, size, size / 2, size / 2, size // 5, accent) # centre disc
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write_png(path, size, size, px)
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os.makedirs(OUT, exist_ok=True)
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# wax: 12 density frames, 32x32, horizontal strip
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W, H, N = 32, 32, 12
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px = canvas(W * N, H)
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blob = [(9, 9), (22, 12), (14, 21), (24, 24), (7, 24), (17, 7), (26, 17), (11, 15),
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(20, 19), (15, 27), (5, 16), (27, 8)]
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for f in range(N):
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for i in range(f + 1):
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cx, cy = blob[i]
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for dx in range(W): # draw into frame f's slice
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pass
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gx = f * W + cx
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disc(px, W * N, gx, cy, 3, PINK if i % 3 == 0 else DARK)
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write_png(os.path.join(OUT, 'wax.png'), W * N, H, px, text={'FrameSize': '32,32'})
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box_sprite(os.path.join(OUT, 'digger.png'), 24, PINK, DARK)
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box_sprite(os.path.join(OUT, 'pressplant.png'), 64, DARK, PINK)
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box_sprite(os.path.join(OUT, 'ampstack.png'), 32, GREY, PINK)
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box_sprite(os.path.join(OUT, 'vault.png'), 32, DARK, GREY)
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