add actions for checking and annotating sprites

scripts/assets.py

@@ -3,6 +3,7 @@
 import glob
 import json
 import os
+import pprint
 import pygame
 import re
 import sys
@@ -237,7 +238,7 @@ def edit_sprite_metadata(filename, metadata=None):
       print('invalid choice')
 
 
-def annotate_sprites(sprite_files, all_metadata):
+def annotate_sprites(all_metadata, sprite_files):
   pygame.init()
   surface = pygame.display.set_mode((1200, 900), pygame.RESIZABLE)
 
@@ -245,23 +246,79 @@ def annotate_sprites(sprite_files, all_metadata):
     sprite_metadata, quit = edit_sprite_metadata(
         filename, all_metadata.get(filename))
     all_metadata[filename] = sprite_metadata
-    with open('metadata.json', 'w') as f:
+    with open('sprites.json', 'w') as f:
       json.dump(all_metadata, f, sort_keys=True, indent=2)
     if quit:
       return
 
 
+def get_named_sprites(metadata):
+  result = {}
+  for filename in metadata:
+    sprite = metadata[filename]
+    for chunk in sprite.get('chunks', []):
+      name = chunk.get('name', '')
+      if not name:
+        continue
+      if name in result:
+        print('warning: duplicated sprite name ', name)
+        sys.exit(1)
+      result[name] = chunk
+  return result
+
+
+def check_sprites(metadata):
+  named_sprites = get_named_sprites(metadata)
+  print('# named sprites:', len(named_sprites))
+  with open('sprites.json', 'w') as f:
+    json.dump(metadata, f, sort_keys=True, indent=2)
+
+
+def stitch_sprites(metadata, filename_base):
+  sprites = get_named_sprites(metadata)
+  max_height = 0
+  total_width = 0
+  for sprite_name, sprite in sprites.items():
+    total_width += sprite['width']
+    max_height = max(max_height, sprite['height'])
+  print('\n# named sprites:', len(sprites))
+  print('result will be %dx%d' % (total_width, max_height))
+
+  output = pygame.Surface((total_width, max_height), pygame.SRCALPHA)
+  output_json = {}
+  xpos = 0
+  for sprite_name, sprite in sprites.items():
+    sprite_image = pygame.image.load(sprite['filename'])
+    area = pygame.Rect(
+        sprite['x'], sprite['y'], sprite['width'], sprite['height'])
+    output_json[sprite_name] = {
+      'name': sprite['name'],
+      'x': xpos,
+      'y': 0,
+      'width': sprite['width'],
+      'height': sprite['height']
+    }
+    output.blit(sprite_image, (xpos, 0), area)
+    xpos += sprite['width']
+  image_filename = os.path.expanduser(filename_base) + '.png'
+  print('saving image to', image_filename)
+  pygame.image.save(output, image_filename)
+  json_filename = os.path.expanduser(filename_base) + '.json'
+  print('saving json to', json_filename)
+  with open(json_filename, 'w') as json_file:
+    json.dump(output_json, json_file, sort_keys=True, indent=2)
+
+
+
 def main(args):
   os.chdir(os.path.expanduser('~/time_fantasy'))
-  with open('metadata.json') as f:
-    all_metadata = json.load(f)
 
   sprite_files = unglob(SPRITE_FILES)
   tileset_files = unglob(TILESET_FILES)
   animation_files = unglob(ANIMATION_FILES)
   icon_files = unglob(ICON_FILES)
   background_files = unglob(BACKGROUND_FILES)
-  print('sprites: %d tilesets: %d animations: %d icons: %d backgrounds: %d' %
+  print('\nsprites: %d tilesets: %d animations: %d icons: %d backgrounds: %d' %
       (len(sprite_files), len(tileset_files), len(animation_files),
         len(icon_files), len(background_files)))
 
@@ -270,8 +327,21 @@ def main(args):
 
   command = args[0]
 
+  with open('sprites.json') as f:
+    metadata = json.load(f)
+
   if command == 'annotate-sprites':
-    annotate_sprites(sprite_files, all_metadata)
+    annotate_sprites(metadata, sprite_files)
+  elif command == 'check-sprites':
+    check_sprites(metadata)
+  elif command == 'stitch-sprites':
+    if len(args) < 2:
+      print('need FILENAME_BASE')
+      return
+    filename_base = args[1]
+    stitch_sprites(metadata, filename_base)
+  else:
+    print('unrecognized command "%s"' % command)
 
 
 if __name__ == '__main__':