Initial commit

engines/mutationofjb/widgets/buttonwidget.cpp

@@ -0,0 +1,69 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mutationofjb/widgets/buttonwidget.h"
+#include "common/events.h"
+#include "graphics/managed_surface.h"
+
+namespace MutationOfJB {
+
+ButtonWidget::ButtonWidget(GuiScreen &gui, const Common::Rect &area, const Graphics::Surface &normalSurface, const Graphics::Surface &pressedSurface) :
+	Widget(gui, area),
+	_normalSurface(normalSurface),
+	_pressedSurface(pressedSurface),
+	_callback(nullptr),
+	_pressed(false) {}
+
+void ButtonWidget::setCallback(ButtonWidgetCallback *callback) {
+	_callback = callback;
+}
+
+void ButtonWidget::handleEvent(const Common::Event &event) {
+	switch (event.type) {
+	case Common::EVENT_LBUTTONDOWN: {
+		const int16 x = event.mouse.x;
+		const int16 y = event.mouse.y;
+		if (_area.contains(x, y)) {
+			_pressed = true;
+			markDirty();
+		}
+		break;
+	}
+	case Common::EVENT_LBUTTONUP: {
+		if (_pressed) {
+			_pressed = false;
+			markDirty();
+			if (_callback) {
+				_callback->onButtonClicked(this);
+			}
+		}
+		break;
+	}
+	default:
+		break;
+	}
+}
+
+void ButtonWidget::draw(Graphics::ManagedSurface &surface) {
+	surface.blitFrom(_pressed ? _pressedSurface : _normalSurface, Common::Point(_area.left, _area.top));
+}
+
+}

engines/mutationofjb/widgets/buttonwidget.h

@@ -0,0 +1,57 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MUTATIONOFJB_BUTTONWIDGET_H
+#define MUTATIONOFJB_BUTTONWIDGET_H
+
+#include "mutationofjb/widgets/widget.h"
+#include "graphics/surface.h"
+
+namespace MutationOfJB {
+
+class ButtonWidget;
+
+class ButtonWidgetCallback {
+public:
+	virtual ~ButtonWidgetCallback() {}
+	virtual void onButtonClicked(ButtonWidget *) = 0;
+};
+
+class ButtonWidget : public Widget {
+public:
+	ButtonWidget(GuiScreen &gui, const Common::Rect &area, const Graphics::Surface &normalSurface, const Graphics::Surface &pressedSurface);
+	void setCallback(ButtonWidgetCallback *callback);
+
+	void handleEvent(const Common::Event &event) override;
+
+protected:
+	void draw(Graphics::ManagedSurface &) override;
+
+private:
+	Graphics::Surface _normalSurface;
+	Graphics::Surface _pressedSurface;
+	ButtonWidgetCallback *_callback;
+	bool _pressed;
+};
+
+}
+
+#endif

engines/mutationofjb/widgets/conversationwidget.cpp

@@ -0,0 +1,95 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mutationofjb/widgets/conversationwidget.h"
+#include "mutationofjb/game.h"
+#include "mutationofjb/gamedata.h"
+#include "mutationofjb/guiscreen.h"
+#include "mutationofjb/font.h"
+#include "common/events.h"
+
+namespace MutationOfJB {
+
+enum {
+	CONVERSATION_LINES_X = 5,
+	CONVERSATION_LINES_Y = 151,
+	CONVERSATION_LINE_HEIGHT = 12
+};
+
+ConversationWidget::ConversationWidget(GuiScreen &gui, const Common::Rect &area, const Graphics::Surface &surface) :
+	Widget(gui, area),
+	_surface(surface),
+	_callback(nullptr) {}
+
+
+void ConversationWidget::setChoice(int choiceNo, const Common::String &str, uint32 data) {
+	if (choiceNo >= CONVERSATION_MAX_CHOICES) {
+		return;
+	}
+
+	_choices[choiceNo]._str = str;
+	_choices[choiceNo]._data = data;
+	markDirty();
+}
+
+void ConversationWidget::clearChoices() {
+	for (int i = 0; i < CONVERSATION_MAX_CHOICES; ++i) {
+		_choices[i]._str.clear();
+		_choices[i]._data = 0;
+	}
+	markDirty();
+}
+
+void ConversationWidget::draw(Graphics::ManagedSurface &surface) {
+	surface.blitFrom(_surface, Common::Point(_area.left, _area.top));
+
+	for (int i = 0; i < CONVERSATION_MAX_CHOICES; ++i) {
+		Common::String &str = _choices[i]._str;
+		if (str.empty()) {
+			continue;
+		}
+
+		// TODO: Active line should be WHITE.
+		_gui.getGame().getAssets().getSystemFont().drawString(&surface, str, CONVERSATION_LINES_X, CONVERSATION_LINES_Y + i * CONVERSATION_LINE_HEIGHT, _area.width(), LIGHTGRAY);
+	}
+}
+
+void ConversationWidget::handleEvent(const Common::Event &event) {
+	switch (event.type) {
+	case Common::EVENT_LBUTTONDOWN: {
+		const int16 x = event.mouse.x;
+		const int16 y = event.mouse.y;
+		if (_area.contains(x, y)) {
+			if (_callback) {
+				int choiceNo = (y - CONVERSATION_LINES_Y) / CONVERSATION_LINE_HEIGHT;
+				if (!_choices[choiceNo]._str.empty()) {
+					_callback->onChoiceClicked(this, choiceNo, _choices[choiceNo]._data);
+				}
+			}
+		}
+		break;
+	}
+	default:
+		break;
+	}
+}
+
+}

engines/mutationofjb/widgets/conversationwidget.h

@@ -0,0 +1,66 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MUTATIONOFJB_CONVERSATIONWIDGET_H
+#define MUTATIONOFJB_CONVERSATIONWIDGET_H
+
+#include "mutationofjb/widgets/widget.h"
+#include "graphics/surface.h"
+
+namespace MutationOfJB {
+
+class ConversationWidget;
+
+class ConversationWidgetCallback {
+public:
+	virtual ~ConversationWidgetCallback() {}
+	virtual void onChoiceClicked(ConversationWidget *, int choiceNo, uint32 data) = 0;
+};
+
+class ConversationWidget : public Widget {
+public:
+	enum { CONVERSATION_MAX_CHOICES = 4 };
+
+	ConversationWidget(GuiScreen &gui, const Common::Rect &area, const Graphics::Surface &surface);
+	void setCallback(ConversationWidgetCallback *callback) {
+		_callback = callback;
+	}
+
+	void setChoice(int choiceNo, const Common::String &str, uint32 data = 0);
+	void clearChoices();
+
+	void handleEvent(const Common::Event &event) override;
+
+protected:
+	void draw(Graphics::ManagedSurface &surface) override;
+
+private:
+	Graphics::Surface _surface;
+	struct ChoiceInfo {
+		Common::String _str;
+		uint32 _data;
+	} _choices[CONVERSATION_MAX_CHOICES];
+	ConversationWidgetCallback *_callback;
+};
+
+}
+
+#endif

engines/mutationofjb/widgets/gamewidget.cpp

@@ -0,0 +1,182 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mutationofjb/widgets/gamewidget.h"
+
+#include "mutationofjb/game.h"
+#include "mutationofjb/gamedata.h"
+#include "mutationofjb/guiscreen.h"
+#include "mutationofjb/mutationofjb.h"
+#include "mutationofjb/room.h"
+
+#include "common/events.h"
+#include "graphics/screen.h"
+
+namespace MutationOfJB {
+
+GameWidget::GameWidget(GuiScreen &gui) :
+	Widget(gui, Common::Rect(GAME_NORMAL_AREA_WIDTH, GAME_NORMAL_AREA_HEIGHT)),
+	_currentMapObjectId(0),
+	_nextMapObjectId(0),
+	_callback(nullptr) {}
+
+void GameWidget::handleEvent(const Common::Event &event) {
+	if (!_enabled)
+		return;
+
+	if (!_gui.getGame().isCurrentSceneMap()) {
+		handleNormalScene(event);
+	} else {
+		handleMapScene(event);
+	}
+}
+
+void GameWidget::clearState() {
+	_currentMapObjectId = _nextMapObjectId = 0;
+}
+
+void GameWidget::draw(Graphics::ManagedSurface &) {
+	Room &room = _gui.getGame().getRoom();
+
+	// Full redraw using background buffer.
+	if (_dirtyBits == DIRTY_ALL) {
+		room.redraw();
+		return;
+	}
+
+	// Full redraw without background buffer.
+	if (_dirtyBits & DIRTY_AFTER_SCENE_CHANGE) {
+		room.redraw(false); // Don't use background buffer.
+		return;
+	}
+
+	// Only selection changed.
+	if (_dirtyBits & DIRTY_MAP_SELECTION) {
+		if (_currentMapObjectId != _nextMapObjectId) {
+			if (_currentMapObjectId) {
+				room.drawObjectAnimation(_currentMapObjectId, 1);
+			}
+			if (_nextMapObjectId) {
+				room.drawObjectAnimation(_nextMapObjectId, 0);
+			}
+			_currentMapObjectId = _nextMapObjectId;
+		}
+	}
+}
+
+void GameWidget::handleNormalScene(const Common::Event &event) {
+	Game &game = _gui.getGame();
+	Scene *const scene = game.getGameData().getCurrentScene();
+
+	switch (event.type) {
+	case Common::EVENT_LBUTTONDOWN: {
+		const int16 x = event.mouse.x;
+		const int16 y = event.mouse.y;
+
+		if (!_area.contains(x, y))
+			break;
+
+		if (Door *const door = scene->findDoor(x, y)) {
+			if (_callback)
+				_callback->onGameDoorClicked(this, door);
+		} else if (Static *const stat = scene->findStatic(x, y)) {
+			if (_callback)
+				_callback->onGameStaticClicked(this, stat);
+		}
+		break;
+	}
+	case Common::EVENT_MOUSEMOVE: {
+
+		const int16 x = event.mouse.x;
+		const int16 y = event.mouse.y;
+
+		if (!_area.contains(x, y))
+			break;
+
+		bool entityHit = false;
+		if (Door *const door = scene->findDoor(x, y)) {
+			if (_callback)
+				_callback->onGameEntityHovered(this, door->_name);
+			entityHit = true;
+		} else if (Static *const stat = scene->findStatic(x, y)) {
+			if (_callback)
+				_callback->onGameEntityHovered(this, stat->_name);
+			entityHit = true;
+		}
+
+		if (_callback && !entityHit)
+			_callback->onGameEntityHovered(this, Common::String());
+
+		_gui.getGame().getEngine().setCursorState(entityHit ? MutationOfJBEngine::CURSOR_ACTIVE : MutationOfJBEngine::CURSOR_IDLE);
+		break;
+	}
+	default:
+		break;
+	}
+}
+
+void GameWidget::handleMapScene(const Common::Event &event) {
+	Game &game = _gui.getGame();
+	Scene *const scene = game.getGameData().getCurrentScene();
+
+	switch (event.type) {
+	case Common::EVENT_LBUTTONDOWN: {
+		const int16 x = event.mouse.x;
+		const int16 y = event.mouse.y;
+
+		int index = 0;
+		if (scene->findBitmap(x, y, &index)) {
+			Static *const stat = scene->getStatic(index);
+			if (stat && stat->_active == 1) {
+				game.startActionSection(ActionInfo::Walk, stat->_name);
+			}
+		}
+		break;
+	}
+	case Common::EVENT_MOUSEMOVE: {
+		const int16 x = event.mouse.x;
+		const int16 y = event.mouse.y;
+
+		_nextMapObjectId = 0;
+
+		int index = 0;
+		//bool found = false;
+		if (scene->findBitmap(x, y, &index)) {
+			Static *const stat = scene->getStatic(index);
+			if (stat && stat->_active == 1) {
+				Object *const object = scene->getObject(index);
+				if (object) {
+					_nextMapObjectId = index;
+				}
+			}
+		}
+		if (_currentMapObjectId != _nextMapObjectId)
+			markDirty(DIRTY_MAP_SELECTION);
+
+		_gui.getGame().getEngine().setCursorState(_nextMapObjectId ? MutationOfJBEngine::CURSOR_ACTIVE : MutationOfJBEngine::CURSOR_IDLE);
+		break;
+	}
+	default:
+		break;
+	}
+}
+
+}

engines/mutationofjb/widgets/gamewidget.h

@@ -0,0 +1,96 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MUTATIONOFJB_GAMEWIDGET_H
+#define MUTATIONOFJB_GAMEWIDGET_H
+
+#include "mutationofjb/widgets/widget.h"
+
+namespace MutationOfJB {
+
+class GameWidget;
+struct Door;
+struct Static;
+
+class GameWidgetCallback {
+public:
+	virtual ~GameWidgetCallback() {}
+	virtual void onGameDoorClicked(GameWidget *, Door *door) = 0;
+	virtual void onGameStaticClicked(GameWidget *, Static *stat) = 0;
+	virtual void onGameEntityHovered(GameWidget *, const Common::String &entity) = 0;
+};
+
+class GameWidget : public Widget {
+public:
+	enum {
+		GAME_NORMAL_AREA_WIDTH = 320,
+		GAME_NORMAL_AREA_HEIGHT = 139,
+		GAME_FULL_AREA_WIDTH = 320,
+		GAME_FULL_AREA_HEIGHT = 200
+	};
+
+	enum DirtyFlags {
+		DIRTY_AFTER_SCENE_CHANGE = 1 << 1,
+		DIRTY_MAP_SELECTION = 1 << 2
+	};
+
+	GameWidget(GuiScreen &gui);
+	void setCallback(GameWidgetCallback *callback) {
+		_callback = callback;
+	}
+
+	void handleEvent(const Common::Event &) override;
+
+	void clearState();
+protected:
+	void draw(Graphics::ManagedSurface &) override;
+
+private:
+	/**
+	 * Handling for normal (non-map) scenes.
+	 *
+	 * Statics and doors define mouse clickable areas.
+	 * Statics are used to start actions.
+	 * Doors are used to transition between scenes.
+	 *
+	 * @param event ScummVM event.
+	 */
+	void handleNormalScene(const Common::Event &event);
+
+	/**
+	 * Special handling for map scenes.
+	 *
+	 * Bitmaps define mouse clickable areas.
+	 * Statics are used to start actions.
+	 * Objects are used for showing labels.
+	 *
+	 * @param event ScummVM event.
+	 */
+	void handleMapScene(const Common::Event &event);
+
+	uint8 _currentMapObjectId;
+	uint8 _nextMapObjectId;
+	GameWidgetCallback *_callback;
+};
+
+}
+
+#endif

engines/mutationofjb/widgets/imagewidget.cpp

@@ -0,0 +1,36 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mutationofjb/widgets/imagewidget.h"
+#include "graphics/managed_surface.h"
+
+namespace MutationOfJB {
+
+ImageWidget::ImageWidget(GuiScreen &gui, const Common::Rect &area, const Graphics::Surface &image) :
+	Widget(gui, area),
+	_image(image) {}
+
+
+void ImageWidget::draw(Graphics::ManagedSurface &surface) {
+	surface.blitFrom(_image, Common::Point(_area.left, _area.top));
+}
+
+}

engines/mutationofjb/widgets/imagewidget.h

@@ -0,0 +1,43 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MUTATIONOFJB_IMAGEWIDGET_H
+#define MUTATIONOFJB_IMAGEWIDGET_H
+
+#include "mutationofjb/widgets/widget.h"
+#include "graphics/surface.h"
+
+namespace MutationOfJB {
+
+class ImageWidget : public Widget {
+public:
+	ImageWidget(GuiScreen &gui, const Common::Rect &area, const Graphics::Surface &image);
+
+protected:
+	void draw(Graphics::ManagedSurface &surface) override;
+
+private:
+	Graphics::Surface _image;
+};
+
+}
+
+#endif

engines/mutationofjb/widgets/inventorywidget.cpp

@@ -0,0 +1,124 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mutationofjb/widgets/inventorywidget.h"
+#include "mutationofjb/game.h"
+#include "mutationofjb/gamedata.h"
+#include "mutationofjb/gamescreen.h"
+#include "mutationofjb/inventory.h"
+
+#include "common/str.h"
+#include "common/rect.h"
+#include "common/util.h"
+#include "common/events.h"
+
+#include "graphics/managed_surface.h"
+
+namespace MutationOfJB {
+
+enum {
+	INVENTORY_START_X = 88,
+	INVENTORY_START_Y = 149,
+	INVENTORY_ITEM_WIDTH = 34,
+	INVENTORY_ITEM_HEIGHT = 33,
+	INVENTORY_ITEMS_PER_LINE = 8,
+	INVENTORY_ITEMS_LINES = 5
+};
+
+InventoryWidget::InventoryWidget(GuiScreen &gui, const Common::Array<Graphics::Surface> &inventorySurfaces) :
+	Widget(gui, Common::Rect(INVENTORY_START_X, INVENTORY_START_Y, INVENTORY_START_X + Inventory::VISIBLE_ITEMS * INVENTORY_ITEM_WIDTH, INVENTORY_START_Y + INVENTORY_ITEM_HEIGHT)),
+	_surfaces(inventorySurfaces),
+	_callback(nullptr),
+	_hoveredItemPos(-1) {}
+
+void InventoryWidget::drawInventoryItem(Graphics::ManagedSurface &surface, const Common::String &item, int pos) {
+	const int index = _gui.getGame().getAssets().getInventoryItemDefList().findItemIndex(item);
+	if (index == -1) {
+		return;
+	}
+
+	const int surfaceNo = index / (INVENTORY_ITEMS_LINES * INVENTORY_ITEMS_PER_LINE);
+	const int indexInSurface = index % (INVENTORY_ITEMS_LINES * INVENTORY_ITEMS_PER_LINE);
+	const int itemX = indexInSurface % INVENTORY_ITEMS_PER_LINE;
+	const int itemY = indexInSurface / INVENTORY_ITEMS_PER_LINE;
+
+	Common::Point destStartPos(INVENTORY_START_X + pos * INVENTORY_ITEM_WIDTH, INVENTORY_START_Y);
+	Common::Rect sourceRect(itemX * INVENTORY_ITEM_WIDTH, itemY * INVENTORY_ITEM_HEIGHT, (itemX + 1) * INVENTORY_ITEM_WIDTH, (itemY + 1) * INVENTORY_ITEM_HEIGHT);
+	surface.blitFrom(_surfaces[surfaceNo], sourceRect, destStartPos);
+}
+
+void InventoryWidget::draw(Graphics::ManagedSurface &surface) {
+	Inventory &inventory = _gui.getGame().getGameData().getInventory();
+	const Inventory::Items &items = inventory.getItems();
+	surface.fillRect(_area, 0x00);
+	for (Inventory::Items::size_type i = 0; i < MIN<Inventory::Items::size_type>(items.size(), Inventory::VISIBLE_ITEMS); ++i) {
+		drawInventoryItem(surface, items[i], i);
+	}
+}
+
+void InventoryWidget::handleEvent(const Common::Event &event) {
+	if (!_callback)
+		return;
+
+	Inventory &inventory = _gui.getGame().getGameData().getInventory();
+	const int numItems = inventory.getItems().size();
+
+	switch (event.type) {
+	case Common::EVENT_LBUTTONDOWN: {
+		const int16 x = event.mouse.x;
+		const int16 y = event.mouse.y;
+		if (_area.contains(x, y)) {
+			int itemPos = (x - INVENTORY_START_X) / INVENTORY_ITEM_WIDTH;
+			if (itemPos < numItems) {
+				_callback->onInventoryItemClicked(this, itemPos);
+			}
+		}
+		break;
+	}
+	case Common::EVENT_MOUSEMOVE: {
+		const int16 x = event.mouse.x;
+		const int16 y = event.mouse.y;
+
+		int newHoveredItemPos = -1;
+		if (_area.contains(x, y)) {
+			int itemPos = (x - INVENTORY_START_X) / INVENTORY_ITEM_WIDTH;
+			if (itemPos < numItems) {
+				newHoveredItemPos = itemPos;
+
+				if (_hoveredItemPos != newHoveredItemPos) {
+					_callback->onInventoryItemHovered(this, itemPos);
+				}
+			}
+		}
+
+		if (newHoveredItemPos == -1 && _hoveredItemPos != -1) {
+			_callback->onInventoryItemHovered(this, -1);
+		}
+
+		_hoveredItemPos = newHoveredItemPos;
+		break;
+	}
+	default:
+		break;
+	}
+}
+
+}

engines/mutationofjb/widgets/inventorywidget.h

@@ -0,0 +1,80 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MUTATIONOFJB_INVENTORYWIDGET_H
+#define MUTATIONOFJB_INVENTORYWIDGET_H
+
+#include "mutationofjb/widgets/widget.h"
+
+#include "common/array.h"
+#include "graphics/surface.h"
+
+namespace Common {
+class String;
+}
+
+namespace MutationOfJB {
+
+class InventoryWidget;
+
+class InventoryWidgetCallback {
+public:
+	virtual ~InventoryWidgetCallback() {}
+
+	/**
+	 * Called when the user hovers an inventory item with the mouse or when stops hovering an item.
+	 *
+	 * @param widget Inventory widget.
+	 * @param posInWidget Item position in the widget or -1 if none.
+	 */
+	virtual void onInventoryItemHovered(InventoryWidget *widget, int posInWidget) = 0;
+
+	/**
+	 * Called when the user clicks on an inventory item.
+	 *
+	 * @param widget Inventory widget.
+	 * @param posInWidget Item position in the widget.
+	 */
+	virtual void onInventoryItemClicked(InventoryWidget *widget, int posInWidget) = 0;
+};
+
+class InventoryWidget : public Widget {
+public:
+	InventoryWidget(GuiScreen &gui, const Common::Array<Graphics::Surface> &inventorySurfaces);
+	void setCallback(InventoryWidgetCallback *callback) {
+		_callback = callback;
+	}
+
+	void handleEvent(const Common::Event &event) override;
+
+protected:
+	void draw(Graphics::ManagedSurface &surface) override;
+
+private:
+	void drawInventoryItem(Graphics::ManagedSurface &surface, const Common::String &item, int pos);
+	const Common::Array<Graphics::Surface> &_surfaces;
+	InventoryWidgetCallback *_callback;
+	int _hoveredItemPos;
+};
+
+}
+
+#endif

engines/mutationofjb/widgets/labelwidget.cpp

@@ -0,0 +1,63 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mutationofjb/widgets/labelwidget.h"
+
+#include "mutationofjb/assets.h"
+#include "mutationofjb/game.h"
+#include "mutationofjb/gamedata.h"
+
+namespace MutationOfJB {
+
+LabelWidget::LabelWidget(GuiScreen &gui, const Common::Rect &area) :
+	Widget(gui, area),
+	_backgroundColor(0x00) {}
+
+uint8 LabelWidget::getBackgroundColor() const {
+	return _backgroundColor;
+}
+
+void LabelWidget::setBackgroundColor(uint8 color) {
+	if (_backgroundColor == color)
+		return;
+
+	_backgroundColor = color;
+	markDirty();
+}
+
+const Common::String &LabelWidget::getText() const {
+	return _text;
+}
+
+void LabelWidget::setText(const Common::String &text) {
+	if (_text == text)
+		return;
+
+	_text = text;
+	markDirty();
+}
+
+void LabelWidget::draw(Graphics::ManagedSurface &surface) {
+	surface.fillRect(_area, _backgroundColor);
+	_gui.getGame().getAssets().getSystemFont().drawString(&surface, _text, _area.left, _area.top, _area.width(), LIGHTGRAY, Graphics::kTextAlignCenter);
+}
+
+}

engines/mutationofjb/widgets/labelwidget.h

@@ -0,0 +1,51 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MUTATIONOJFB_LABELWIDGET_H
+#define MUTATIONOJFB_LABELWIDGET_H
+
+#include "mutationofjb/widgets/widget.h"
+
+#include "common/str.h"
+
+namespace MutationOfJB {
+
+class LabelWidget : public Widget {
+public:
+	LabelWidget(GuiScreen &gui, const Common::Rect &area);
+
+	uint8 getBackgroundColor() const;
+	void setBackgroundColor(uint8 color);
+
+	const Common::String &getText() const;
+	void setText(const Common::String &text);
+
+protected:
+	void draw(Graphics::ManagedSurface &) override;
+
+private:
+	uint8 _backgroundColor;
+	Common::String _text;
+};
+
+}
+
+#endif

engines/mutationofjb/widgets/widget.cpp

@@ -0,0 +1,78 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mutationofjb/widgets/widget.h"
+
+namespace MutationOfJB {
+
+int Widget::getId() const {
+	return _id;
+}
+
+void Widget::setId(int id) {
+	_id = id;
+}
+
+bool Widget::isVisible() const {
+	return _visible;
+}
+
+void Widget::setVisible(bool visible) {
+	if (!_visible && visible) {
+		markDirty();
+	}
+	_visible = visible;
+}
+
+bool Widget::isEnabled() const {
+	return _enabled;
+}
+
+void Widget::setEnabled(bool enabled) {
+	_enabled = enabled;
+}
+
+Common::Rect Widget::getArea() const {
+	return _area;
+}
+
+void Widget::setArea(const Common::Rect &area) {
+	_area = area;
+}
+
+void Widget::markDirty(uint32 dirtyBits) {
+	_dirtyBits = dirtyBits;
+}
+
+bool Widget::isDirty() const {
+	return _dirtyBits != DIRTY_NONE;
+}
+
+void Widget::update(Graphics::ManagedSurface &surface) {
+	if (isDirty()) {
+		if (_visible) {
+			draw(surface);
+		}
+		_dirtyBits = DIRTY_NONE;
+	}
+}
+
+}

engines/mutationofjb/widgets/widget.h

@@ -0,0 +1,80 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MUTATIONOFJB_WIDGET_H
+#define MUTATIONOFJB_WIDGET_H
+
+#include "common/scummsys.h"
+#include "common/rect.h"
+
+namespace Common {
+struct Event;
+}
+
+namespace Graphics {
+class ManagedSurface;
+}
+
+namespace MutationOfJB {
+
+class GuiScreen;
+
+class Widget {
+public:
+	enum : uint {
+		DIRTY_NONE = 0,
+		DIRTY_ALL = 0xFFFFFFFF
+	};
+
+	Widget(GuiScreen &gui, const Common::Rect &area) : _gui(gui), _area(area), _id(0), _visible(true), _enabled(true), _dirtyBits(DIRTY_NONE) {}
+	virtual ~Widget() {}
+
+	int getId() const;
+	void setId(int id);
+
+	bool isVisible() const;
+	void setVisible(bool visible);
+
+	bool isEnabled() const;
+	void setEnabled(bool enabled);
+
+	Common::Rect getArea() const;
+	void setArea(const Common::Rect &area);
+
+	bool isDirty() const;
+	void markDirty(uint32 dirtyBits = DIRTY_ALL);
+	void update(Graphics::ManagedSurface &);
+
+	virtual void handleEvent(const Common::Event &) {}
+protected:
+	virtual void draw(Graphics::ManagedSurface &) = 0;
+
+	GuiScreen &_gui;
+	Common::Rect _area;
+	int _id;
+	bool _visible;
+	bool _enabled;
+	uint32 _dirtyBits;
+};
+
+}
+
+#endif