Add sprites and conversion scripts

1 files changed, 48 insertions, 0 deletions

diff --git a/scripts/parse_sprite_png.py b/scripts/parse_sprite_png.py
new file mode 100644
index 0000000..1fcc4ab
--- /dev/null
+++ b/scripts/parse_sprite_png.py
@@ -0,0 +1,48 @@
+from PIL import Image
+import numpy as np
+import sys
+
+file = Image.open(sys.argv[1]).convert("RGB")
+
+px_array = np.asarray(file)
+
+def getpx(sprite_nb, x, y):
+    sprite_line = int(sprite_nb / (file.width / 8))
+    sprite_column = int(sprite_nb % (file.width / 8))
+
+    return [int(x) for x in px_array[int(sprite_line * 8 + y)][int(sprite_column * 8 + x)]]
+
+
+if file.width % 8 != 0 or file.height % 8 != 0:
+    raise ValueError("Width and height must be multiples of 8px")
+
+sprite_nb = int((file.width / 8) * (file.height / 8))
+
+for nb in range(0, sprite_nb):
+    result1 = [0,0,0,0,0,0,0,0]
+    result2 = [0,0,0,0,0,0,0,0]
+    for y in range(0, 8):
+        for x in range(0, 8):
+            px = getpx(nb, x, y)
+            dw = px[0] - 0xe0 + px[1] - 0xf8 + px[2] - 0xd0
+            dlg = px[0] - 0x88 + px[1] - 0xc0 + px[2] - 0x70
+            ddg = px[0] - 0x34 + px[1] - 0x68 + px[2] - 0x56
+            db = px[0] - 0x08 + px[1] - 0x18 + px[2] - 0x20
+    
+            if min(abs(db), abs(ddg)) < min(abs(dlg), abs(dw)):
+                result2[y] |= 1 << (7-x)
+            if min(abs(db), abs(dlg)) < min(abs(ddg), abs(dw)):
+                result1[y] |= 1 << (7-x)
+            
+            if abs(db) < min(abs(dw), abs(dlg), abs(ddg)):
+                print("#", end = '')
+            else:
+                print(" ", end = '')
+        print("\n", end = '')
+    print("\n")
+    for i in range(0, 8):
+        if i == 0:
+            print(".DB $%02x, $%02x" % (result1[i], result2[i]), end='')
+        else:
+            print(", $%02x, $%02x" % (result1[i], result2[i]), end='')
+    print("\n")