img2calc_zeldalink.py

Created on January 26, 2022
2 KB
fills the screen with Link sprites using different zoom levels
#image converted on TI-Planet
#tiplanet.org/img2calc

from kandinsky import fill_rect

#the image drawing function
#- rle : image RLE-compressed data
#- w : width of image
#- pal : palette of colors to use with image
#- zoomx : horizontal zoom
#- zoomy : vertical zoom
#- itransp : index of 1 transparent color in palette or -1 if none
def draw_image(rle, x0, y0, w, pal, zoomx=1, zoomy=1, itransp=-1):
  i, x = 0, 0
  x0, y0 = int(x0), int(y0)
  nvals = len(pal)
  nbits = 0
  nvals -= 1
  while(nvals):
    nvals >>= 1
    nbits += 1
  maskval = (1 << nbits) - 1
  maskcnt = (0xFF >> nbits >> 1) << nbits
  while i<len(rle):
    v = rle[i]
    mv = v & maskval
    c = (v & maskcnt) >> nbits
    if (v & 0b10000000 or nbits == 8):
      i += 1
      c |= rle[i] << (7 - nbits + (nbits == 8))
    c = c + 1
    while c:
      cw = min(c, w - x)
      if mv != itransp:
        fill_rect(x0 + x*zoomx, y0, cw*zoomx, zoomy, pal[mv])
      c -= cw
      x = (x + cw) % w
      y0 += x == 0 and zoomy
    i += 1


#palette for your image
#18 RGB-888 colors
palette = (
"#000000","#202020","#509000","#78b418","#f87800","#f0a068","#e860b0","#b86818","w","#303430","#40d870","#309068","#885820","#2020c8","#e09050","#8080f0","#f0d840","#c01018",
)

#your image data
#16x22 RLE-5 pixels
image = (
b"\xa0\1\xe1\0\xc0\2\1\"\3\2!\xe0\1\1\"\xe3\0\2\1\xe0\0\1\0!\4\"\3\2\4\1\2!\0\1\5\1\6!\xe4\0!\2\1\5!\5\1F\xe1\0&!\5!\a\5\1\xe6\1\1\5\a!\a\1\6\xe1\1\6\1\a\1\0\1\a\1\a('(\a\1\a\1@\1'\b\1%\1\b'\1\xe0\0!\a\5\1%\1\5\a!@\t\n\v\1\a\tE\a\1\v\n\1\0\t\b\xe9\0\b\t\a!+\1\f\1\t\xa8\1\t\1\v\n\v\1,\1\t\b\xed\0\b\tJ\v!\16\1\t\b\r/\r\b\t\nK\1.\1\t\b\r/\r\b\t\20\x010\v\1\16\1\t\b\r/\r\b\t0+A \t\b-\b\tK!\21\1\xe0\0\t(\t\xe1\0\21\4!\x80\1)\xe1\1\xe0\1\xa1\1\x80\1"
)

l = (
  (0,0,4,4),
  (64,0,3,3),
  (64,66,3,1),
  (112,0,2,3),
  (112,66,2,1),
  (144,0,1,3),
  (144,66,1,1),
)
for v in l:
  for ky in (-1, 1):
    for kx in (-1, 1):
      draw_image(image, 160 + v[0]*kx, 96 + v[1]*ky, 16, palette, zoomx=v[2]*kx, zoomy=v[3]*ky, itransp=0)