MUTATIONOFJB: Implement UI for inventory.

1 files changed, 181 insertions, 0 deletions

diff --git a/engines/mutationofjb/gui.cpp b/engines/mutationofjb/gui.cpp
new file mode 100644
index 0000000000..5ceed67b88
--- /dev/null
+++ b/engines/mutationofjb/gui.cpp
@@ -0,0 +1,181 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "mutationofjb/gui.h"
+#include "mutationofjb/animationdecoder.h"
+#include "mutationofjb/encryptedfile.h"
+#include "mutationofjb/game.h"
+#include "mutationofjb/gamedata.h"
+#include "mutationofjb/inventory.h"
+#include "mutationofjb/util.h"
+#include "common/rect.h"
+#include "graphics/screen.h"
+
+namespace MutationOfJB {
+
+enum ButtonType {
+	BUTTON_WALK,
+	BUTTON_TALK,
+	BUTTON_LOOK,
+	BUTTON_USE,
+	BUTTON_PICKUP,
+	BUTTON_SCROLL_LEFT,
+	BUTTON_SCROLL_RIGHT,
+	BUTTON_SETTINGS
+};
+
+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
+};
+
+static Common::Rect ButtonRects[] = {
+	Common::Rect(0, 148, 67, 158), // Walk
+	Common::Rect(0, 158, 67, 168), // Talk
+	Common::Rect(0, 168, 67, 178), // Look
+	Common::Rect(0, 178, 67, 188), // Use
+	Common::Rect(0, 188, 67, 198), // PickUp
+	Common::Rect(67, 149, 88, 174), // ScrollLeft
+	Common::Rect(67, 174, 88, 199), // ScrollRight
+	Common::Rect(301, 148, 320, 200) // Settings
+};
+
+Gui::Gui(Game &game, Graphics::Screen *screen)
+	: _game(game),
+	_screen(screen),
+	_inventoryDirty(false) {
+}
+
+bool Gui::init() {
+	const bool result1 = loadInventoryList();
+	const bool result2 = loadInventoryGfx();
+
+	_game.getGameData().getInventory().setObserver(this);
+
+	return result1 && result2;
+}
+
+void Gui::markInventoryDirty() {
+	_inventoryDirty = true;
+}
+
+void Gui::update() {
+	if (_inventoryDirty) {
+		drawInventory();
+		_inventoryDirty = false;
+	}
+}
+
+class InventoryAnimationDecoderCallback : public AnimationDecoderCallback {
+public:
+	InventoryAnimationDecoderCallback(Gui &gui) : _gui(gui) {}
+	virtual void onFrame(int frameNo, Graphics::Surface &surface) override;
+	virtual void onPaletteUpdated(byte palette[PALETTE_SIZE]) override;
+private:
+	Gui &_gui;
+};
+
+void InventoryAnimationDecoderCallback::onPaletteUpdated(byte palette[PALETTE_SIZE]) {
+	_gui._screen->setPalette(palette + 0xC0 * 3, 0xC0, 0x20); // Load only 0x20 colors.
+}
+
+void InventoryAnimationDecoderCallback::onFrame(int frameNo, Graphics::Surface &surface) {
+	if (frameNo < 3) {
+		Graphics::Surface outSurface;
+		outSurface.copyFrom(surface);
+		_gui._inventorySurfaces.push_back(outSurface);
+	}
+}
+
+bool Gui::loadInventoryGfx() {
+	AnimationDecoder decoder("icons.dat");
+	InventoryAnimationDecoderCallback callback(*this);
+	return decoder.decode(&callback);
+}
+
+bool Gui::loadInventoryList() {
+	EncryptedFile file;
+	const char *fileName = "fixitems.dat";
+	file.open(fileName);
+	if (!file.isOpen()) {
+		reportFileMissingError(fileName);
+		return false;
+	}
+
+	int itemIndex = 0;
+	while (!file.eos()) {
+		Common::String line = file.readLine();
+		if (line.empty() || line.hasPrefix("#")) {
+			continue;
+		}
+		const char *firstSpace = strchr(line.c_str(), ' ');
+		if (!firstSpace) {
+			continue;
+		}
+		const int len = firstSpace - line.c_str();
+		if (!len) {
+			continue;
+		}
+		Common::String item(line.c_str(), len);
+		_inventoryItems[item] = itemIndex;
+		itemIndex++;
+	}
+
+	return true;
+}
+
+void Gui::drawInventoryItem(const Common::String &item, int pos) {
+	InventoryMap::iterator it = _inventoryItems.find(item);
+	if (it == _inventoryItems.end()) {
+		return;
+	}
+
+	const int index = it->_value;
+	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);
+	_screen->blitFrom(_inventorySurfaces[surfaceNo], sourceRect, destStartPos);
+}
+
+void Gui::drawInventory() {
+	Inventory &inventory = _game.getGameData().getInventory();
+	const Inventory::Items &items = inventory.getItems();
+	Common::Rect fullRect(INVENTORY_START_X, INVENTORY_START_Y, INVENTORY_START_X + Inventory::VISIBLE_ITEMS * INVENTORY_ITEM_WIDTH, INVENTORY_START_Y + INVENTORY_ITEM_HEIGHT);
+	_screen->fillRect(fullRect, 0x00);
+	for (int i = 0; i < MIN((int) items.size(), (int) Inventory::VISIBLE_ITEMS); ++i) {
+		drawInventoryItem(items[i], i);
+	}
+}
+
+void Gui::onInventoryChanged() {
+	markInventoryDirty();
+}
+
+}