Added a simple MD5 hash check to determine whether Q3A data is up to date. This determines how the install wizard selects the next page.

installwizard.cpp

@@ -2,6 +2,8 @@
 #include "ui_installwizard.h"
 #include "installwizard_installtype.h"
 #include "installwizard_locatepage.h"
+#include "installwizard_patch.h"
+#include "installwizard_finished.h"
 #include "settings.h"
 
 InstallWizard::InstallWizard(QWidget *parent, Settings *settings) :
@@ -15,6 +17,9 @@ InstallWizard::InstallWizard(QWidget *parent, Settings *settings) :
 #ifdef Q_OS_WIN32
     setPage(Page_Locate, new InstallWizard_LocatePage(this, settings));
 #endif
+
+    setPage(Page_Patch, new InstallWizard_Patch());
+    setPage(Page_Finished, new InstallWizard_Finished());
 }
 
 InstallWizard::~InstallWizard()

installwizard.h

@@ -20,7 +20,9 @@ public:
     enum
     {
         Page_InstallType,
-        Page_Locate
+        Page_Locate,
+        Page_Patch,
+        Page_Finished
     };
 
 private slots:

installwizard_finished.cpp

@@ -0,0 +1,14 @@
+#include "installwizard_finished.h"
+#include "ui_installwizard_finished.h"
+
+InstallWizard_Finished::InstallWizard_Finished(QWidget *parent) :
+    QWizardPage(parent),
+    ui(new Ui::InstallWizard_Finished)
+{
+    ui->setupUi(this);
+}
+
+InstallWizard_Finished::~InstallWizard_Finished()
+{
+    delete ui;
+}

installwizard_finished.h

@@ -0,0 +1,22 @@
+#ifndef INSTALLWIZARD_FINISHED_H
+#define INSTALLWIZARD_FINISHED_H
+
+#include <QWizardPage>
+
+namespace Ui {
+class InstallWizard_Finished;
+}
+
+class InstallWizard_Finished : public QWizardPage
+{
+    Q_OBJECT
+
+public:
+    explicit InstallWizard_Finished(QWidget *parent = 0);
+    ~InstallWizard_Finished();
+
+private:
+    Ui::InstallWizard_Finished *ui;
+};
+
+#endif // INSTALLWIZARD_FINISHED_H

installwizard_finished.ui

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>InstallWizard_Finished</class>
+ <widget class="QWizardPage" name="InstallWizard_Finished">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>WizardPage</string>
+  </property>
+  <property name="title">
+   <string>Installation Complete</string>
+  </property>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

installwizard_locatepage.cpp

@@ -1,13 +1,16 @@
+#include <QCryptographicHash>
 #include <QFileDialog>
 #include <QMessageBox>
 #include "installwizard_locatepage.h"
 #include "ui_installwizard_locatepage.h"
+#include "installwizard.h"
 #include "settings.h"
 
 InstallWizard_LocatePage::InstallWizard_LocatePage(QWidget *parent, Settings *settings) :
     QWizardPage(parent),
     ui(new Ui::InstallWizard_LocatePage),
-    settings(settings)
+    settings(settings),
+    isQuake3PatchRequired(false)
 {
     ui->setupUi(this);
     registerField("quake3Path*", ui->txtLocation);
@@ -46,5 +49,30 @@ bool InstallWizard_LocatePage::validatePage()
         return false;
     }
 
+    // Check if the Quake 3 installation needs patching.
+    const QString pakFilename(ui->txtLocation->text() + "/baseq3/pak1.pk3");
+    QFile file(pakFilename);
+
+    if (!file.open(QIODevice::ReadOnly))
+    {
+        QMessageBox::warning(this, "Missing file", QString("Unable to open file '%1'").arg(pakFilename));
+        return false;
+    }
+
+    const QByteArray hash = QCryptographicHash::hash(file.readAll(), QCryptographicHash::Md5).toHex();
+    isQuake3PatchRequired = (hash != "48911719d91be25adb957f2d325db4a0");
+
     return true;
 }
+
+int InstallWizard_LocatePage::nextId() const
+{
+    if (isQuake3PatchRequired)
+    {
+        return InstallWizard::Page_Patch;
+    }
+    else
+    {
+        return InstallWizard::Page_Finished;
+    }
+}

installwizard_locatepage.h

@@ -23,10 +23,12 @@ private slots:
 
 protected:
     virtual bool validatePage();
+    virtual int nextId() const;
 
 private:
     Ui::InstallWizard_LocatePage *ui;
     Settings *settings;
+    bool isQuake3PatchRequired;
 };
 
 #endif // INSTALLWIZARD_LOCATEPAGE_H

installwizard_patch.cpp

@@ -0,0 +1,14 @@
+#include "installwizard_patch.h"
+#include "ui_installwizard_patch.h"
+
+InstallWizard_Patch::InstallWizard_Patch(QWidget *parent) :
+    QWizardPage(parent),
+    ui(new Ui::InstallWizard_Patch)
+{
+    ui->setupUi(this);
+}
+
+InstallWizard_Patch::~InstallWizard_Patch()
+{
+    delete ui;
+}

installwizard_patch.h

@@ -0,0 +1,22 @@
+#ifndef INSTALLWIZARD_PATCH_H
+#define INSTALLWIZARD_PATCH_H
+
+#include <QWizardPage>
+
+namespace Ui {
+class InstallWizard_Patch;
+}
+
+class InstallWizard_Patch : public QWizardPage
+{
+    Q_OBJECT
+
+public:
+    explicit InstallWizard_Patch(QWidget *parent = 0);
+    ~InstallWizard_Patch();
+
+private:
+    Ui::InstallWizard_Patch *ui;
+};
+
+#endif // INSTALLWIZARD_PATCH_H

installwizard_patch.ui

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>InstallWizard_Patch</class>
+ <widget class="QWizardPage" name="InstallWizard_Patch">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>WizardPage</string>
+  </property>
+  <property name="title">
+   <string>Installing Patch...</string>
+  </property>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

launch.pro

@@ -17,18 +17,24 @@ SOURCES += main.cpp\
     settings.cpp \
     installwizard.cpp \
     installwizard_locatepage.cpp \
-    installwizard_installtype.cpp
+    installwizard_installtype.cpp \
+    installwizard_finished.cpp \
+    installwizard_patch.cpp
 
 HEADERS  += mainwindow.h \
     settings.h \
     installwizard.h \
     installwizard_locatepage.h \
-    installwizard_installtype.h
+    installwizard_installtype.h \
+    installwizard_finished.h \
+    installwizard_patch.h
 
 FORMS    += mainwindow.ui \
     installwizard.ui \
     installwizard_locatepage.ui \
-    installwizard_installtype.ui
+    installwizard_installtype.ui \
+    installwizard_finished.ui \
+    installwizard_patch.ui
 
 OTHER_FILES += \
     README.md \