Update installer to automatically detect Steam, GOG install directori…

…es; add uninstaller

Installer/crysis.nsi

@@ -1,7 +1,9 @@
 !include "MUI2.nsh"
-!define VERSION '0.3.0'
+!define VERSION '0.3.1'
 
 Name "Crysis VR Mod"
+; should not need admin privileges as the install folder should be user writable, anyway
+RequestExecutionLevel user
 
 OutFile ".\crysis-vrmod-${VERSION}.exe"
 
@@ -13,7 +15,7 @@ OutFile ".\crysis-vrmod-${VERSION}.exe"
 !define MUI_WELCOMEPAGE_TITLE 'Crysis VR Mod v${VERSION}'
 !define MUI_WELCOMEPAGE_TEXT 'This will install the Crysis VR Mod on your computer. \
 Please be aware that this is an early development version, and bugs are to be expected. \
-It is a seated-only experience for now without any motion controller support. \
+It is a seated-only experience for now with limited motion controller support. \
 Also, it is Crysis - expect performance to not be great :)'
 
 !define MUI_DIRECTORYPAGE_TEXT 'Please enter the location of your Crysis installation.'
@@ -24,9 +26,14 @@ Also, it is Crysis - expect performance to not be great :)'
 
 !insertmacro MUI_PAGE_WELCOME
 !insertmacro MUI_PAGE_DIRECTORY
+!insertmacro MUI_PAGE_COMPONENTS
 !insertmacro MUI_PAGE_INSTFILES
 !insertmacro MUI_PAGE_FINISH
 
+!insertmacro MUI_UNPAGE_CONFIRM
+!insertmacro MUI_UNPAGE_INSTFILES
+!insertmacro MUI_UNPAGE_FINISH
+
 !insertmacro MUI_LANGUAGE "English"
 
 Section "" 
@@ -43,8 +50,43 @@ Section ""
 	Delete $INSTDIR\Bin64\d3d10.dll
 	Delete $INSTDIR\Bin64\dxgi.dll
 	Delete $INSTDIR\LaunchVRMod.bat
+
+	WriteUninstaller "$INSTDIR\Uninstall_CrysisVR.exe"
+SectionEnd
+
+Section "Start menu shortcut"
+	CreateShortcut "$SMPrograms\$(^Name).lnk" "$InstDir\Bin64\CrysisVR.exe"
+SectionEnd
+
+Section /o "Desktop shortcut"
+	CreateShortcut "$Desktop\$(^Name).lnk" "$InstDir\Bin64\CrysisVR.exe"
+SectionEnd
+
+Section "Uninstall"
+	SetOutPath $INSTDIR
+	RMDir /r "$INSTDIR\Mods\VRMod"
+	Delete "$INSTDIR\Bin64\CrysisVR.exe"
+	Delete "$SMPrograms\$(^Name).lnk"
+	Delete "$Desktop\$(^Name).lnk"
+	Delete "Uninstall_CrysisVR.exe"
 SectionEnd
 
 Function .onInit
-	StrCpy $INSTDIR "C:\Program Files (x86)\Steam\steamapps\common\Crysis"
+	; try to look up install directory for the GOG.com version of Crysis
+	SetRegView 32
+	ReadRegStr $R0 HKLM "Software\GOG.com\Games\1809223221" "path"
+	IfErrors lbl_checksteam 0
+	StrCpy $INSTDIR $R0
+	Return
+
+	lbl_checksteam:
+	; try to look up install directory for the Steam version of Crysis
+	SetRegView 64
+	ReadRegStr $R0 HKLM "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Steam App 17300" "InstallLocation"
+	IfErrors lbl_fallback 0
+	StrCpy $INSTDIR $R0
+	Return
+
+	lbl_fallback:
+	StrCpy $INSTDIR "$PROGRAMFILES32\Steam\steamapps\common\Crysis"
 FunctionEnd