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launch.bat

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+@echo off
+title P7MC Launcher
+cd /d "%~dp0"
+echo [*] Checking for missing libraries...
+pip install minecraft-launcher-lib --quiet
+echo [*] Starting P7MC Launcher...
+python p7mc.py
+pause

p7mc.py

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+import minecraft_launcher_lib
+import subprocess
+import os
+
+# --- PROGRESS BAR CALLBACKS ---
+current_max = 0
+
+def set_status(status: str):
+    if status: print(f"{status}")
+
+def set_progress(progress: int):
+    if current_max != 0:
+        percentage = int((progress / current_max) * 100)
+        print(f"- Progress: [{percentage}%] {progress}/{current_max} files", end="\r")
+
+def set_max(new_max: int):
+    global current_max
+    current_max = new_max
+
+def list_local_versions(dir):
+    print("\nExisting Versions")
+    if not os.path.exists(dir):
+        print("[None]")
+        return
+    local = minecraft_launcher_lib.utils.get_installed_versions(dir)
+    if not local:
+        print("[None]")
+    else:
+        for v in local:
+            print(f" - {v['id']}")
+
+# --- FIXED DIRECTORY LOGIC ---
+# This forces the folder to be in your 'P7MC' folder on the Desktop
+script_dir = os.path.dirname(os.path.abspath(__file__))
+minecraft_directory = os.path.join(script_dir, "minecraft")
+
+# Create the folder immediately so you can see it in VSCode
+os.makedirs(minecraft_directory, exist_ok=True)
+
+while True:
+    try:
+        print("\n" + "=" * 40)
+        print("P7MC - P7MJ's MC Launcher")
+        print(f"Path: {minecraft_directory}") # Debug line to show you the location
+        print("=" * 40)
+        choice = input("[1] Launch\n[2] Install\n[f] Open Folder\n[h] Help (For common errors)\n[e] Exit\n > ").strip().lower()
+
+        if choice == "e":
+            break
+        
+        # Opens the folder in File Explorer for you
+        if choice == "f":
+            os.startfile(minecraft_directory)
+            continue
+
+        # --- INSTALLATION FLOW ---
+        if choice == "2":
+            list_local_versions(minecraft_directory)
+            print("Type a version, or \"latest\" for the latest release.")
+            version = input("Version > ").strip()
+            
+            if version.lower() == "latest":
+                version = minecraft_launcher_lib.utils.get_latest_version()["release"]
+
+            callback = {"setStatus": set_status, "setProgress": set_progress, "setMax": set_max}
+            print(f"[*] Downloading and installing {version}...")
+            minecraft_launcher_lib.install.install_minecraft_version(version, minecraft_directory, callback=callback)
+            print("\nInstall complete!")
+
+        # --- LAUNCH FLOW ---
+        elif choice == "1":
+            list_local_versions(minecraft_directory)
+            version = input("Version > ").strip()
+            
+            # GET THE LOCAL VERSIONS LIST
+            local_versions = minecraft_launcher_lib.utils.get_installed_versions(minecraft_directory)
+            # CHECK IF THE TYPED VERSION IS IN THAT LIST
+            is_installed = any(v['id'] == version for v in local_versions)
+
+            if not is_installed:
+                print(f"[!] Error: {version} not found in local folder. Please install it first.")
+                continue
+
+            username = input("Username > ").strip()
+            
+            options = {
+                "username": username,
+                "uuid": "00000000-0000-0000-0000-000000000000",
+                "token": "offline",
+            }
+
+            print(f"Launching {version}...")
+            minecraft_command = minecraft_launcher_lib.command.get_minecraft_command(version, minecraft_directory, options)
+            subprocess.run(minecraft_command)
+            print("\nGame closed.")
+
+        elif choice == "h":
+            print("\nHELP")
+            print("1. To delete versions, open the folder and manually delete it.")
+            print("2. Use the open folder function to find your installs.")
+            print("3. If in any case the download terminates prematurely, just install the same version again! It will automatically check what files are already there, do an integrity check, and finish it for you.")
+            
+        else:
+            print("Invalid choice. Please type \"1\", \"2\", \"f\", \"h\", or \"e\".")
+
+    except Exception as e:
+        print(f"\n[!] Error: {e}")
+
+print("Launcher closed.")