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/* 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
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