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/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the Graphics Dojo project on Trolltech Labs.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 or 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include "entity.h"
const QImage toAlpha(const QImage &image)
{
if (image.isNull())
return image;
QRgb alpha = image.pixel(0, 0);
QImage result = image.convertToFormat(QImage::Format_ARGB32_Premultiplied);
QRgb *data = reinterpret_cast<QRgb *>(result.bits());
int size = image.width() * image.height();
for (int i = 0; i < size; ++i)
if (data[i] == alpha)
data[i] = 0;
return result;
}
Entity::Entity(const QPointF &pos)
: ProjectedItem(QRectF(-0.3, -0.4, 0.6, 0.9), false)
, m_pos(pos)
, m_angle(180)
, m_walking(false)
, m_walked(false)
, m_turnVelocity(0)
, m_useTurnTarget(false)
, m_animationIndex(0)
, m_angleIndex(0)
{
startTimer(300);
}
void Entity::walk()
{
m_walking = true;
}
void Entity::stop()
{
m_walking = false;
m_useTurnTarget = false;
m_turnVelocity = 0;
}
void Entity::turnTowards(qreal x, qreal y)
{
m_turnTarget = QPointF(x, y);
m_useTurnTarget = true;
}
void Entity::turnLeft()
{
m_useTurnTarget = false;
m_turnVelocity = -0.5;
}
void Entity::turnRight()
{
m_useTurnTarget = false;
m_turnVelocity = 0.5;
}
static QVector<QImage> loadSoldierImages()
{
QVector<QImage> images;
for (int i = 1; i <= 40; ++i) {
QImage image(QString("soldier/O%0.png").arg(i, 2, 10, QLatin1Char('0')));
images << toAlpha(image.convertToFormat(QImage::Format_RGB32));
}
return images;
}
static inline int mod(int x, int y)
{
return ((x % y) + y) % y;
}
void Entity::updateTransform(const Camera &camera)
{
qreal angleToCamera = QLineF(m_pos, camera.pos()).angle();
int cameraAngleIndex = mod(qRound(angleToCamera + 22.5), 360) / 45;
m_angleIndex = mod(qRound(cameraAngleIndex * 45 - m_angle + 22.5), 360) / 45;
QPointF delta = QLineF::fromPolar(1, 270.1 + 45 * cameraAngleIndex).p2();
setPosition(m_pos - delta, m_pos + delta);
updateImage();
ProjectedItem::updateTransform(camera);
}
bool Entity::move(MazeScene *scene)
{
bool moved = false;
if (m_useTurnTarget) {
qreal angleToTarget = QLineF::fromPolar(1, m_angle)
.angleTo(QLineF(m_pos, m_turnTarget));
if (angleToTarget != 0) {
if (angleToTarget >= 180)
angleToTarget -= 360;
if (angleToTarget < 0)
m_angle -= qMin(-angleToTarget, qreal(0.5));
else
m_angle += qMin(angleToTarget, qreal(0.5));
moved = true;
}
} else if (m_turnVelocity != 0) {
m_angle += m_turnVelocity;
moved = true;
}
m_walked = false;
if (m_walking) {
QPointF walkingDelta = QLineF::fromPolar(0.006, m_angle).p2();
if (scene->tryMove(m_pos, walkingDelta, this)) {
moved = true;
m_walked = true;
}
}
return moved;
}
void Entity::timerEvent(QTimerEvent *)
{
++m_animationIndex;
updateImage();
}
void Entity::updateImage()
{
static QVector<QImage> images = loadSoldierImages();
if (m_walked)
setImage(images.at(8 + 8 * (m_animationIndex % 4) + m_angleIndex));
else
setImage(images.at(m_angleIndex));
}
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