Add get_generator_mod_data

Uses u9g's mod: https://github.com/u9g/minecraft-data-generator-server

codegen/genblocks.py

@@ -10,14 +10,16 @@ import os
 
 version_id = lib.code.version.get_version_id()
 
-lib.download.get_burger()
+lib.extract.get_generator_mod_data(version_id, 'blockCollisionShapes')
-lib.download.get_client_jar(version_id)
 
-print('Generating data with burger')
+# lib.download.get_burger()
-os.system(
+# lib.download.get_client_jar(version_id)
-    f'cd {lib.utils.get_dir_location("downloads/Burger")} && python munch.py ../client-{version_id}.jar --output ../burger-{version_id}.json --toppings blockstates'
+
-)
+# print('Generating data with burger')
-print('Ok')
+# os.system(
+#     f'cd {lib.utils.get_dir_location("downloads/Burger")} && python munch.py ../client-{version_id}.jar --output ../burger-{version_id}.json --toppings blockstates'
+# )
+# print('Ok')
 
 mappings = lib.download.get_mappings_for_version(version_id)
 block_states_burger = lib.extract.get_block_states_burger(version_id)

codegen/lib/code/blocks.py

@@ -180,6 +180,8 @@ def generate_blocks(blocks_burger: dict, blocks_report: dict, ordered_blocks: li
         if in_macro:
             continue
         new_code.append(line)
+    # empty line at the end
+    new_code.append('')
 
     with open(BLOCKS_RS_DIR, 'w') as f:
         f.write('\n'.join(new_code))

codegen/lib/download.py

@@ -19,12 +19,20 @@ def get_burger():
         os.system('cd downloads/Burger && pip install six jawa')
 
 
+def get_generator_mod():
+    if not os.path.exists(get_dir_location('downloads/minecraft-data-generator-server')):
+        print('\033[92mDownloading u9g/minecraft-data-generator-server...\033[m')
+        os.system(
+            f'cd {get_dir_location("downloads")} && git clone https://github.com/u9g/minecraft-data-generator-server && cd minecraft-data-generator-server && git pull')
+    return get_dir_location('downloads/minecraft-data-generator-server')
+
+
 def get_version_manifest():
     if not os.path.exists(get_dir_location(f'downloads/version_manifest.json')):
         print(
             f'\033[92mDownloading version manifest...\033[m')
         version_manifest_data = requests.get(
-            'https://launchermeta.mojang.com/mc/game/version_manifest.json').json()
+            'https://piston-meta.mojang.com/mc/game/version_manifest_v2.json').json()
         with open(get_dir_location(f'downloads/version_manifest.json'), 'w') as f:
             json.dump(version_manifest_data, f)
     else:
@@ -86,3 +94,30 @@ def get_mappings_for_version(version_id: str):
         with open(get_dir_location(f'downloads/mappings-{version_id}.txt'), 'r') as f:
             mappings_text = f.read()
     return Mappings.parse(mappings_text)
+
+
+def get_yarn_versions():
+    # https://meta.fabricmc.net/v2/versions/yarn
+    if not os.path.exists(get_dir_location('downloads/yarn_versions.json')):
+        print('\033[92mDownloading yarn versions...\033[m')
+        yarn_versions_data = requests.get(
+            'https://meta.fabricmc.net/v2/versions/yarn').json()
+        with open(get_dir_location('downloads/yarn_versions.json'), 'w') as f:
+            json.dump(yarn_versions_data, f)
+    else:
+        with open(get_dir_location('downloads/yarn_versions.json'), 'r') as f:
+            yarn_versions_data = json.load(f)
+    return yarn_versions_data
+
+
+def get_yarn_data(version_id: str):
+    for version in get_yarn_versions():
+        if version['gameVersion'] == version_id:
+            return version
+
+
+def clear_version_cache():
+    files = [
+        'version_manifest.json',
+        'yarn_versions.json'
+    ]

codegen/lib/extract.py

@@ -1,6 +1,6 @@
 # Extracting data from the Minecraft jars
 
-from lib.download import get_server_jar, get_burger, get_client_jar
+from lib.download import get_server_jar, get_burger, get_client_jar, get_generator_mod, get_yarn_data
 from lib.utils import get_dir_location
 import json
 import os
@@ -42,3 +42,47 @@ def get_burger_data_for_version(version_id: str):
         )
     with open(get_dir_location(f'downloads/burger-{version_id}.json'), 'r') as f:
         return json.load(f)
+
+
+def get_generator_mod_data(version_id: str, category: str):
+    '''
+    Gets data from u9g's data generator mod. Note that this is not very stable, and it requires Yarn to release updates first.
+    '''
+
+    target_dir = get_dir_location(f'downloads/generator-mod-{version_id}')
+
+    if not os.path.exists(get_dir_location(target_dir)):
+        generator_mod_dir = get_generator_mod()
+
+        yarn_data = get_yarn_data(version_id)
+        if not yarn_data:
+            raise Exception(
+                'Fabric/Yarn hasn\'t been updated to this version yet.')
+        # looks like 1.19+build.1
+        yarn_version = yarn_data['version']
+
+        # the mod has the minecraft version hard-coded by default, so we just change the gradle.properties
+        with open(get_dir_location(f'{generator_mod_dir}/gradle.properties'), 'r') as f:
+            lines = f.readlines()
+        with open(get_dir_location(f'{generator_mod_dir}/gradle.properties'), 'w') as f:
+            for line in lines:
+                if line.startswith('minecraft_version='):
+                    line = f'minecraft_version={version_id}\n'
+                if line.startswith('yarn_mappings='):
+                    line = f'yarn_mappings={yarn_version}\n'
+                f.write(line)
+
+        os.system(
+            f'cd {generator_mod_dir} && gradlew runServer'
+        )
+
+        if os.path.exists(target_dir):
+            os.unlink(target_dir)
+        os.rename(
+            get_dir_location(
+                f'{generator_mod_dir}/run/minecraft-data/{version_id}'),
+            target_dir
+        )
+
+    with open(f'{target_dir}/{category}.json', 'r') as f:
+        return json.load(f)