unify launcher for x64 and x86 systems (windows)

Author: mirkosertic

run.bat

@@ -1,2 +1,25 @@
-@echo off
-java -Djava.library.path=.\java3d\win32 -cp .\lib\mogwai-smartstart-1.1.jar de.mogwai.smartstart.SmartStart de.erdesignerng.visual.ERDesigner lib
+@echo off
+
+::IDs are hex values
+set ID64Bit=40
+set ID32Bit=20
+
+::reg.exe does not exist on Windows 2000, force 32bit then
+if not exist %windir%\system32\reg.exe goto 32bit
+
+reg.exe query "HKLM\Hardware\Description\System\CentralProcessor\0" /v "Platform ID" | find "0x%ID64Bit%" > nul
+if %ERRORLEVEL% == 0 (
+	goto 64bit
+) else (
+	goto 32bit
+)
+
+:32bit
+java -Djava.library.path=.\java3d\win32 -cp .\lib\mogwai-smartstart-1.1.jar de.mogwai.smartstart.SmartStart de.erdesignerng.visual.ERDesigner lib
+goto end
+
+:64bit
+java -Djava.library.path=.\java3d\win64 -cp .\lib\mogwai-smartstart-1.1.jar de.mogwai.smartstart.SmartStart de.erdesignerng.visual.ERDesigner lib
+goto end
+
+:end