scummvm/engines/petka/video.cpp

/* 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 "common/system.h"

#include "petka/sound.h"
#include "petka/flc.h"
#include "petka/petka.h"
#include "petka/q_system.h"
#include "petka/interfaces/main.h"
#include "petka/interfaces/dialog_interface.h"
#include "petka/objects/object.h"
#include "petka/video.h"

namespace Petka {

// COMPLETED

const uint kShakeTime = 30;
const int kShakeOffset = 3;

VideoSystem::VideoSystem(PetkaEngine &vm) :
	_vm(vm), _shake(false), _shift(false), _shakeTime(0), _time(0) {
	makeAllDirty();
	_time = g_system->getMillis();
	_allowAddingRects = true;
}

void VideoSystem::update() {
	QSystem *sys = _vm.getQSystem();
	Interface *interface = sys->_currInterface;
	uint32 time = g_system->getMillis();
	if (interface) {
		if (sys->_currInterface == sys->_mainInterface.get()) {
			int xOff = sys->_xOffset;
			int reqOffset = sys->_reqOffset;
			if (xOff != reqOffset && ((xOff != sys->_sceneWidth - 640 && xOff < reqOffset) || (xOff > 0 && xOff > reqOffset))) {
				if (xOff <= reqOffset) {
					xOff += 8;
					xOff = MIN<int>(xOff, reqOffset);
				} else {
					xOff -= 8;
					xOff = MAX<int>(xOff, reqOffset);
				}
				sys->_xOffset = CLIP(xOff, 0, sys->_sceneWidth - 640);
			}
			makeAllDirty();
		}


		for (uint i = interface->_startIndex; i < interface->_objs.size(); ++i) {
			interface->_objs[i]->update(time - _time);
		}

		for (uint i = 0; i < interface->_objs.size(); ++i) {
			interface->_objs[i]->updateZ();
		}

		sort();

		mergeDirtyRects();

		_allowAddingRects = false;
		for (uint i = 0; i < interface->_objs.size(); ++i) {
			interface->_objs[i]->draw();
		}
		_allowAddingRects = true;

		for (Common::List<Common::Rect>::iterator i = _dirtyRects.begin(); i != _dirtyRects.end(); ++i) {
			const Common::Rect &r = *i;
			const byte *srcP = (const byte *)getBasePtr(r.left, r.top);
			g_system->copyRectToScreen(srcP, pitch, r.left, r.top,
									   r.width(), r.height());
		}

		_dirtyRects.clear();
	}

	_time = time;

	if (_shake) {
		g_system->setShakePos(_shift ? kShakeOffset : 0, 0);
		if (time - _shakeTime > kShakeTime) {
			_shift = !_shift;
			_shakeTime = time;
		}
	}

	g_system->updateScreen();
}

void VideoSystem::addDirtyRect(const Common::Rect &rect) {
	if (_allowAddingRects) {
		Graphics::Screen::addDirtyRect(rect);
	}
}

void VideoSystem::addDirtyRect(Common::Point pos, Common::Rect rect) {
	rect.translate(pos.x, pos.y);
	addDirtyRect(rect);
}

void VideoSystem::addDirtyRect(Common::Point pos, FlicDecoder &flc) {
	pos.x = pos.x - g_vm->getQSystem()->_xOffset;
	addDirtyRect(pos, flc.getBounds());
}

void VideoSystem::addDirtyMskRects(Common::Point pos, FlicDecoder &flc) {
	const Common::Array<Common::Rect> &rects = flc.getMskRects();
	for (uint i = 0; i < rects.size(); ++i) {
		addDirtyRect(pos, rects[i]);
	}
}

void VideoSystem::addDirtyMskRects(FlicDecoder &flc) {
	addDirtyMskRects(Common::Point(0, 0), flc);
}

const Common::List<Common::Rect> VideoSystem::rects() const {
	return _dirtyRects;
}

void VideoSystem::updateTime() {
	_time = g_system->getMillis();
}

void VideoSystem::setShake(bool shake) {
	_shake = shake;
	g_system->setShakePos(0, 0);
}

void VideoSystem::sort() {
	Common::Array<QVisibleObject *> &objs = _vm.getQSystem()->_currInterface->_objs;
	for (uint i = 0; i < objs.size() - 1; ++i) {
		uint minIndex = i;
		for (uint j = i + 1; j < objs.size(); ++j) {
			if (objs[j]->_z < objs[minIndex]->_z) {
				minIndex = j;
			}
		}

		if (i != minIndex) {
			QVisibleObject *tmp = objs[i];
			objs[i] = objs[minIndex];
			objs[minIndex] = tmp;
		}
	}
}

}