44 lines
1.2 KiB
Python
44 lines
1.2 KiB
Python
from PIL import Image
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# Open the new cover image
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img = Image.open('bg.png')
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# Convert to grayscale first to get raw intensity values
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img_gray = img.convert('L')
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# Create a new indexed image with the exact Game Boy palette mapping
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# 0 = White, 1 = Light Gray, 2 = Dark Gray, 3 = Black
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final_img = Image.new('P', img_gray.size)
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# Set the palette
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palette = [
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255, 255, 255, # 0: White
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170, 170, 170, # 1: Light Gray
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85, 85, 85, # 2: Dark Gray
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0, 0, 0 # 3: Black
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]
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palette += [0] * (256 * 3 - len(palette))
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final_img.putpalette(palette)
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# Map the grayscale pixels to palette indices (0-3)
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# Darker pixels get higher indices (closer to 3/Black), lighter get lower indices (closer to 0/White)
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raw_pixels = list(img_gray.getdata())
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mapped_pixels = []
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for p in raw_pixels:
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if p > 200:
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mapped_pixels.append(0) # White
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elif p > 120:
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mapped_pixels.append(1) # Light Gray
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elif p > 55:
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mapped_pixels.append(2) # Dark Gray
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else:
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mapped_pixels.append(3) # Black
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final_img.putdata(mapped_pixels)
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# Save the resulting image
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final_img.save('title_bg.png')
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print("title_bg.png created successfully with correct color indexing.")
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