@echo off
title World Sketcher

where python >nul 2>&1
if %errorlevel% neq 0 (
    echo [ERROR] Python not found. Install Python 3 first.
    pause
    exit /b 1
)

set PORT=8765
if not "%~1"=="" set PORT=%~1

echo.
echo   World Sketcher
echo   Port: %PORT%
echo   Save dir: output\
echo   Close this window to stop.
echo.

start "" cmd /c "timeout /t 2 /nobreak >nul & start http://localhost:%PORT%/sketch.html"

python "%~dp0server.py" %PORT%