Start compiled sprite script

scripts/compilesprite.py

@@ -0,0 +1,82 @@
+#!/usr/bin/python3
+
+import sys
+import argparse
+import ntpath
+import itertools
+
+from pathlib import Path
+from PIL import Image
+
+parser = argparse.ArgumentParser(description='Compile indexed color PNG sprite to Acorn ARM assembler.')
+parser.add_argument('-i', '--infile', nargs='+', type=argparse.FileType('rb'),default=sys.stdin)
+parser.add_argument('-o', '--outfile', nargs='+', type=argparse.FileType('wt'),default=sys.stdout)
+parser.add_argument('-sw', '--spritewidth', type=int,default=8)
+parser.add_argument('-sh', '--spriteheight', type=int,default=8)
+
+args = parser.parse_args()
+
+filenames = [args.infile, args.outfile]
+
+for infile, outfile in zip(args.infile, args.outfile):
+    filename = Path(ntpath.basename(infile.name)).stem
+
+    image = Image.open(infile)
+    image_name = filename
+    image_width,image_height = image.size
+
+    sprite_width = args.spritewidth
+    sprite_height = args.spriteheight
+
+    palette_name = filename + "_palette"
+    palette_type,palette_data = image.palette.getdata()
+
+    f_out = outfile
+
+    image_pixels = image.load()
+
+    print("\ncompilesprite: '"+infile.name+"' => '"+outfile.name+"'")
+    print("\tImage size   : "+f'{image_width}'+"x"+f'{image_height}')
+    print("\tSprite size  : "+f'{sprite_width}'+"x"+f'{sprite_height}')
+
+    label_name = image_name.replace("-","_")
+    f_out.write(label_name+':\n')
+
+    iy = 0
+    tile = 0
+
+    while iy < image_height:
+        ix = 0
+        while ix < image_width:
+            f_out.write(label_name+f'_sprite_{tile}'+':\n')
+            y = 0
+            while y < sprite_height:
+                x = 0
+                while x < sprite_width:
+                    # b0 = image_pixels[ix + x + 0,iy + y]
+                    # b1 = image_pixels[ix + x + 1,iy + y]
+                    # b2 = image_pixels[ix + x + 2,iy + y]
+                    # b3 = image_pixels[ix + x + 3,iy + y]
+                    # b4 = image_pixels[ix + x + 4,iy + y]
+                    # b5 = image_pixels[ix + x + 5,iy + y]
+                    # b6 = image_pixels[ix + x + 6,iy + y]
+                    # b7 = image_pixels[ix + x + 7,iy + y]
+                    # f_out.write(f'0x{b0:02x},'+f'0x{b1:02x},'+f'0x{b2:02x},'+f'0x{b3:02x},'+f'0x{b4:02x},'+f'0x{b5:02x},'+f'0x{b6:02x},'+f'0x{b7:02x}')
+                    x += 8
+                    # if x >= sprite_width:
+                    #     f_out.write('\n')
+                    # else:
+                    #     f_out.write(',')
+                y += 1
+
+            tile = tile + 1
+
+            ix += sprite_width
+            if ix < image_width:
+                if iy <= (image_height - sprite_height):
+                    f_out.write('\n')
+
+        iy += sprite_height
+
+    f_out.write(label_name+'_end:\n\n')
+    f_out.close()