@@ -0,0 +1,89 @@
+/* Copyright (c) 2013-2019 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "AbstractUpdater.h"
+
+#include <QNetworkAccessManager>
+#include <QNetworkReply>
+
+using namespace QGBA;
+
+AbstractUpdater::AbstractUpdater(QObject* parent)
+	: QObject(parent)
+	, m_netman(new QNetworkAccessManager(this))
+{
+}
+
+void AbstractUpdater::checkUpdate() {
+	QNetworkReply* reply = m_netman->get(QNetworkRequest(manifestLocation()));
+	chaseRedirects(reply, &AbstractUpdater::manifestDownloaded);
+}
+
+void AbstractUpdater::downloadUpdate() {
+	if (m_isUpdating) {
+		return;
+	}
+	if (m_manifest.isEmpty()) {
+		m_isUpdating = true;
+		checkUpdate();
+		return;
+	}
+	QUrl url = parseManifest(m_manifest);
+	if (!url.isValid()) {
+		emit updateDone(false);
+		return;
+	}
+	m_isUpdating = true;
+	QNetworkReply* reply = m_netman->get(QNetworkRequest(url));
+	chaseRedirects(reply, &AbstractUpdater::updateDownloaded);
+}
+
+void AbstractUpdater::chaseRedirects(QNetworkReply* reply, void (AbstractUpdater::*cb)(QNetworkReply*)) {
+	connect(reply, &QNetworkReply::finished, this, [this, reply, cb]() {
+		// TODO: check domains, etc
+		if (reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() / 100 == 3) {
+			QNetworkReply* newReply = m_netman->get(QNetworkRequest(reply->header(QNetworkRequest::LocationHeader).toString()));
+			chaseRedirects(newReply, cb);
+		} else {
+			(this->*cb)(reply);
+		}
+	});
+}
+
+void AbstractUpdater::manifestDownloaded(QNetworkReply* reply) {
+	m_manifest = reply->readAll();
+	QUrl url = parseManifest(m_manifest);
+	if (m_isUpdating) {
+		if (!url.isValid()) {
+			emit updateDone(false);
+		} else {
+			QNetworkReply* reply = m_netman->get(QNetworkRequest(url));
+			chaseRedirects(reply, &AbstractUpdater::updateDownloaded);
+		}
+	} else {
+		emit updateAvailable(url.isValid());
+	}
+}
+
+void AbstractUpdater::updateDownloaded(QNetworkReply* reply) {
+	m_isUpdating = false;
+	if (reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() / 100 != 2) {
+		emit updateDone(false);
+		return;
+	}
+	QFile f(destination());
+	if (!f.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
+		emit updateDone(false);
+		return;
+	}
+	while (true) {
+		QByteArray bytes = reply->read(4096);
+		if (!bytes.size()) {
+			break;
+		}
+		f.write(bytes);
+	}
+	emit updateDone(true);
+}

@@ -0,0 +1,47 @@
+/* Copyright (c) 2013-2019 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#pragma once
+
+#include <QByteArray>
+#include <QFile>
+#include <QObject>
+
+class QNetworkAccessManager;
+class QNetworkReply;
+
+namespace QGBA {
+
+class AbstractUpdater : public QObject {
+Q_OBJECT
+
+public:
+	AbstractUpdater(QObject* parent = nullptr);
+	virtual ~AbstractUpdater() {}
+
+public slots:
+	void checkUpdate();
+	void downloadUpdate();
+
+signals:
+	void updateAvailable(bool);
+	void updateDone(bool);
+
+protected:
+	virtual QUrl manifestLocation() const = 0;
+	virtual QUrl parseManifest(const QByteArray&) const = 0;
+	virtual QString destination() const = 0;
+
+private:
+	void chaseRedirects(QNetworkReply*, void (AbstractUpdater::*cb)(QNetworkReply*));
+	void manifestDownloaded(QNetworkReply*);
+	void updateDownloaded(QNetworkReply*);
+
+	bool m_isUpdating = false;
+	QNetworkAccessManager* m_netman;
+	QByteArray m_manifest;
+};
+
+}

@@ -155,6 +155,21 @@ void BattleChipModel::setScale(int scale) {
 	m_scale = scale;
 }
 
+void BattleChipModel::reloadAssets() {
+	QResource::unregisterResource(ConfigController::configDir() + "/chips.rcc", "/exe");
+	QResource::unregisterResource(GBAApp::dataDir() + "/chips.rcc", "/exe");
+
+	QResource::registerResource(GBAApp::dataDir() + "/chips.rcc", "/exe");
+	QResource::registerResource(ConfigController::configDir() + "/chips.rcc", "/exe");
+
+	emit layoutAboutToBeChanged();
+	setFlavor(m_flavor);
+	for (int i = 0; i < m_deck.count(); ++i) {
+		m_deck[i] = createChip(m_deck[i].id);
+	}
+	emit layoutChanged();
+}
+
 BattleChipModel::BattleChip BattleChipModel::createChip(int id) const {
 	QString path = QString(":/exe/exe%1/%2.png").arg(m_flavor).arg(id, 3, 10, QLatin1Char('0'));
 	if (!QFile(path).exists()) {

@@ -10,6 +10,8 @@ #include <QPixmap>
 
 namespace QGBA {
 
+class BattleChipUpdater;
+
 class BattleChipModel : public QAbstractListModel {
 Q_OBJECT
 
@@ -35,6 +37,7 @@ void removeChip(const QModelIndex&);
 	void setChips(QList<int> ids);
 	void clear();
 	void setScale(int);
+	void reloadAssets();
 
 private:
 	struct BattleChip {

@@ -0,0 +1,47 @@
+/* Copyright (c) 2013-2019 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "BattleChipUpdater.h"
+
+#include "ConfigController.h"
+#include "GBAApp.h"
+
+#include <QFileInfo>
+#include <QJsonArray>
+#include <QJsonDocument>
+#include <QJsonObject>
+
+using namespace QGBA;
+
+BattleChipUpdater::BattleChipUpdater(QObject* parent)
+	: AbstractUpdater(parent)
+{
+}
+
+QUrl BattleChipUpdater::manifestLocation() const {
+	return {"https://api.github.com/repos/mgba-emu/chip-assets/releases/latest"};
+}
+
+QUrl BattleChipUpdater::parseManifest(const QByteArray& manifest) const {
+	QJsonDocument manifestDoc(QJsonDocument::fromJson(manifest));
+	if (manifestDoc.isNull()) {
+		return QUrl();
+	}
+	for (const auto& assetv : manifestDoc.object()["assets"].toArray()) {
+		QJsonObject asset = assetv.toObject();
+		if (asset["name"].toString() == "chips.rcc") {
+			return asset["browser_download_url"].toString();
+		}
+	}
+	return QUrl();
+}
+
+QString BattleChipUpdater::destination() const {
+	QFileInfo info(GBAApp::dataDir() + "/chips.rcc");
+	if (info.isWritable()) {
+		return info.filePath();
+	}
+	return ConfigController::configDir() + "/chips.rcc";
+}

@@ -0,0 +1,22 @@
+/* Copyright (c) 2013-2019 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#pragma once
+
+#include "AbstractUpdater.h"
+
+namespace QGBA {
+
+class BattleChipUpdater : public AbstractUpdater {
+public:
+	BattleChipUpdater(QObject* parent = nullptr);
+
+protected:
+	virtual QUrl manifestLocation() const override;
+	virtual QUrl parseManifest(const QByteArray&) const override;
+	virtual QString destination() const override;
+};
+
+}

@@ -5,11 +5,15 @@ * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "BattleChipView.h"
 
+#include "BattleChipUpdater.h"
+#include "ConfigController.h"
 #include "CoreController.h"
+#include "GBAApp.h"
 #include "ShortcutController.h"
 #include "Window.h"
 
 #include <QtAlgorithms>
+#include <QFileInfo>
 #include <QFontMetrics>
 #include <QMessageBox>
 #include <QMultiMap>
@@ -59,6 +63,7 @@ connect(m_ui.remove, &QAbstractButton::clicked, this, &BattleChipView::removeChip);
 	connect(controller.get(), &CoreController::stopping, this, &QWidget::close);
 	connect(m_ui.save, &QAbstractButton::clicked, this, &BattleChipView::saveDeck);
 	connect(m_ui.load, &QAbstractButton::clicked, this, &BattleChipView::loadDeck);
+	connect(m_ui.updateData, &QAbstractButton::clicked, this, &BattleChipView::updateData);
 	connect(m_ui.buttonBox->button(QDialogButtonBox::Reset), &QAbstractButton::clicked, &m_model, &BattleChipModel::clear);
 
 	connect(m_ui.gateBattleChip, &QAbstractButton::toggled, this, [this](bool on) {
@@ -100,6 +105,18 @@ } else if (qtitle.startsWith("AGB-BRB") || qtitle.startsWith("AGB-BRK")) {
 		m_ui.gateProgress->setChecked(Qt::Checked);
 	} else if (qtitle.startsWith("AGB-BR5") || qtitle.startsWith("AGB-BR6")) {
 		m_ui.gateBeastLink->setChecked(Qt::Checked);
+	}
+
+	if (!QFileInfo(GBAApp::dataDir() + "/chips.rcc").exists() && !QFileInfo(ConfigController::configDir() + "/chips.rcc").exists()) {
+		QMessageBox* download = new QMessageBox(this);
+		download->setIcon(QMessageBox::Information);
+		download->setStandardButtons(QMessageBox::Yes | QMessageBox::No);
+		download->setWindowTitle(tr("BattleChip data missing"));
+		download->setText(tr("BattleChip data is missing. BattleChip Gates will still work, but some graphics will be missing. Would you like to download the data now?"));
+		download->setAttribute(Qt::WA_DeleteOnClose);
+		download->setWindowModality(Qt::NonModal);
+		connect(download, &QDialog::accepted, this, &BattleChipView::updateData);
+		download->show();
 	}
 }
 
@@ -225,4 +242,21 @@ x += index.row();
 		chips[x] = m_model.data(index, Qt::UserRole).toInt();
 	}
 	m_model.setChips(chips.values());
+}
+
+void BattleChipView::updateData() {
+	if (m_updater) {
+		return;
+	}
+	m_updater = new BattleChipUpdater(this);
+	connect(m_updater, &BattleChipUpdater::updateDone, this, [this](bool success) {
+		if (success) {
+			m_model.reloadAssets();
+			m_ui.chipName->clear();
+			m_ui.chipName->addItems(m_model.chipNames().values());
+		}
+		delete m_updater;
+		m_updater = nullptr;
+	});
+	m_updater->downloadUpdate();
 }

@@ -41,6 +41,8 @@
 	void saveDeck();
 	void loadDeck();
 
+	void updateData();
+
 private:
 	static const int UNINSERTED_TIME = 10;
 
@@ -55,6 +57,8 @@ int m_frameCounter = -1;
 	bool m_next = false;
 
 	Window* m_window;
+
+	BattleChipUpdater* m_updater = nullptr;
 };
 
 }

@@ -6,7 +6,7 @@ <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>630</width>
+    <width>658</width>
     <height>722</height>
    </rect>
   </property>
@@ -192,6 +192,19 @@ <item row="0" column="0">
          <widget class="QLabel" name="label_4">
           <property name="text">
            <string>Chip ID</string>
+          </property>
+         </widget>
+        </item>
+        <item row="2" column="0" colspan="2">
+         <widget class="QPushButton" name="updateData">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="text">
+           <string>Update Chip data</string>
           </property>
          </widget>
         </item>

@@ -66,6 +66,7 @@ endif()
 
 set(SOURCE_FILES
 	AboutScreen.cpp
+	AbstractUpdater.cpp
 	AssetTile.cpp
 	AssetView.cpp
 	AudioProcessor.cpp
@@ -148,6 +149,7 @@ VideoView.ui)
 
 set(GBA_SRC
 	BattleChipModel.cpp
+	BattleChipUpdater.cpp
 	BattleChipView.cpp
 	GBAOverride.cpp)