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Diffstat (limited to 'engines/lastexpress/graphics.cpp')
| -rw-r--r-- | engines/lastexpress/graphics.cpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/engines/lastexpress/graphics.cpp b/engines/lastexpress/graphics.cpp new file mode 100644 index 0000000000..e5a69d16ea --- /dev/null +++ b/engines/lastexpress/graphics.cpp @@ -0,0 +1,166 @@ +/* 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. + * + * $URL$ + * $Id$ + * + */ + +#include "lastexpress/graphics.h" + +#include "common/system.h" + +namespace LastExpress { + +#define COLOR_KEY 0xFFFF + +GraphicsManager::GraphicsManager() : _changed(false) { + _screen.create(640, 480, 2); + + // Create the game surfaces + _backgroundA.create(640, 480, 2); + _backgroundC.create(640, 480, 2); + _overlay.create(640, 480, 2); + _inventory.create(640, 480, 2); + + clear(kBackgroundAll); +} + +GraphicsManager::~GraphicsManager() { + // Free the game surfaces + _screen.free(); + _backgroundA.free(); + _backgroundC.free(); + _overlay.free(); + _inventory.free(); +} + +void GraphicsManager::update() { + // Update the screen if needed and reset the status + if (_changed) { + mergePlanes(); + updateScreen(); + _changed = false; + } +} + +void GraphicsManager::change() { + _changed = true; +} + +void GraphicsManager::clear(BackgroundType type) { + clear(type, Common::Rect(640, 480)); +} + +void GraphicsManager::clear(BackgroundType type, const Common::Rect &rect) { + switch (type) { + default: + error("GraphicsManager::clear() - Unknown background type: %d", type); + break; + + case kBackgroundA: + case kBackgroundC: + case kBackgroundOverlay: + case kBackgroundInventory: + getSurface(type)->fillRect(rect, COLOR_KEY); + break; + + case kBackgroundAll: + _backgroundA.fillRect(rect, COLOR_KEY); + _backgroundC.fillRect(rect, COLOR_KEY); + _overlay.fillRect(rect, COLOR_KEY); + _inventory.fillRect(rect, COLOR_KEY); + break; + } +} + +bool GraphicsManager::draw(Drawable *drawable, BackgroundType type, bool transition) { + // TODO handle transition properly + if (transition) + clear(type); + + // TODO store rect for later use + Common::Rect rect = drawable->draw(getSurface(type)); + + return (!rect.isEmpty()); +} + +Graphics::Surface *GraphicsManager::getSurface(BackgroundType type) { + switch (type) { + default: + error("GraphicsManager::getSurface() - Unknown surface type: %d", type); + break; + + case kBackgroundA: + return &_backgroundA; + + case kBackgroundC: + return &_backgroundC; + + case kBackgroundOverlay: + return &_overlay; + + case kBackgroundInventory: + return &_inventory; + + case kBackgroundAll: + error("GraphicsManager::getSurface() - cannot return a surface for kBackgroundAll!"); + break; + } +} + +// TODO optimize to only merge dirty rects +void GraphicsManager::mergePlanes() { + // Clear screen surface + _screen.fillRect(Common::Rect(640, 480), 0); + + uint16 *screen = (uint16 *)_screen.pixels; + uint16 *inventory = (uint16 *)_inventory.pixels; + uint16 *overlay = (uint16 *)_overlay.pixels; + uint16 *backgroundC = (uint16 *)_backgroundC.pixels; + uint16 *backgroundA = (uint16 *)_backgroundA.pixels; + + for (int i = 0; i < 640 * 480; i++) { + + if (*inventory != COLOR_KEY) + *screen = *inventory; + else if (*overlay != COLOR_KEY) + *screen = *overlay; + else if (*backgroundA != COLOR_KEY) + *screen = *backgroundA; + else if (*backgroundC != COLOR_KEY) + *screen = *backgroundC; + else + *screen = 0; + + inventory++; + screen++; + overlay++; + backgroundA++; + backgroundC++; + } +} + +void GraphicsManager::updateScreen() { + g_system->fillScreen(0); + g_system->copyRectToScreen((byte *)_screen.getBasePtr(0, 0), 640 * 2, 0, 0, 640, 480); +} + +} // End of namespace LastExpress |