122 lines
2.2 KiB
Python
122 lines
2.2 KiB
Python
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#!/usr/bin/python
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import sys,os,png
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class Colors:
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black,magenta = range(2)
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def main(argv):
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if len(argv)<1:
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usage()
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pngfile = sys.argv[1]
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reader = png.Reader(pngfile)
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try:
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pngdata = reader.asRGB8()
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except:
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usage()
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width = pngdata[0];
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height = pngdata[1];
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pixeldata = pngdata[2];
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bitmap = [[0 for x in range(width)] for y in range(height)]
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for shift in range(7):
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for phase in range(2):
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if shift==0 and phase>0:
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continue
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for row in range(height):
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for col in range(width):
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(pixelr,pixelg,pixelb,half) = pixelRemap(pixeldata,row,col,width,shift,phase)
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if pixelr==255 and pixelg==0 and pixelb==255:
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bitmap[row][col] = Colors.magenta
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else:
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bitmap[row][col] = Colors.black
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spriteNum = max(0,shift*2-1+phase)
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printBitmap(bitmap,os.path.splitext(pngfile)[0].upper(),spriteNum,half,0)
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def pixelRemap(pixeldata,row,col,width,shift,phase):
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halfPixel = 0
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overHalf = 0
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if shift>=width:
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overHalf = 1
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shift = shift-width+1
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if phase==0:
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halfPixel = 1
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if phase==0:
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col = col+shift
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else:
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col = col-(width-shift)
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if not overHalf:
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halfPixel = -1
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if col >= width or col<0:
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return (0,0,0,halfPixel)
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r = pixeldata[row][col*3]
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g = pixeldata[row][col*3+1]
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b = pixeldata[row][col*3+2]
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return (r,g,b,halfPixel)
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def colorString(color,currByteString):
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if len(currByteString) > 6:
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if color==Colors.magenta:
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return '1'
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else:
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return '0'
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else:
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if color==Colors.magenta:
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return '10'
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return '00'
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def printBitmap(bitmap,label,shift,halfShift,highbit):
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print "%s%d:" % (label,shift)
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for row in range(len(bitmap)):
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byteString = "%d" % highbit
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for col in range(len(bitmap[0])):
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append = colorString(bitmap[row][col],byteString)
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byteString += append
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if halfShift>0:
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byteString = "0" + byteString[:-1]
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else:
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if halfShift<0:
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byteString = byteString[1:] + "0"
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sys.stdout.write("\t.byte\t%%%s\n" % byteString);
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sys.stdout.write('\n\n')
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sys.stdout.flush()
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def usage():
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print '''
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Usage: HiSprite <png file>
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PNG file must not have an alpha channel!
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'''
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sys.exit(2)
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if __name__ == "__main__":
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main(sys.argv[1:])
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