demos/sub-attaq/submarine.cpp

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  41
  42 //Own
  43 #include "submarine.h"
  44 #include "submarine_p.h"
  45 #include "torpedo.h"
  46 #include "pixmapitem.h"
  47 #include "graphicsscene.h"
  48 #include "animationmanager.h"
  49 #include "custompropertyanimation.h"
  50 #include "qanimationstate.h"
  51
  52 #include <QtCore/QPropertyAnimation>
  53 #include <QtCore/QStateMachine>
  54 #include <QtCore/QFinalState>
  55 #include <QtCore/QSequentialAnimationGroup>
  56
  57 static QAbstractAnimation *setupDestroyAnimation(SubMarine *sub)
  58 {
  59     QSequentialAnimationGroup *group = new QSequentialAnimationGroup(sub);
  60 #if QT_VERSION >=0x040500
  61     PixmapItem *step1 = new PixmapItem(QString("explosion/submarine/step1"),GraphicsScene::Big, sub);
  62     step1->setZValue(6);
  63     PixmapItem *step2 = new PixmapItem(QString("explosion/submarine/step2"),GraphicsScene::Big, sub);
  64     step2->setZValue(6);
  65     PixmapItem *step3 = new PixmapItem(QString("explosion/submarine/step3"),GraphicsScene::Big, sub);
  66     step3->setZValue(6);
  67     PixmapItem *step4 = new PixmapItem(QString("explosion/submarine/step4"),GraphicsScene::Big, sub);
  68     step4->setZValue(6);
  69     step1->setOpacity(0);
  70     step2->setOpacity(0);
  71     step3->setOpacity(0);
  72     step4->setOpacity(0);
  73     CustomPropertyAnimation *anim1 = new CustomPropertyAnimation(sub);
  74     anim1->setMemberFunctions((QGraphicsItem*)step1, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
  75     anim1->setDuration(100);
  76     anim1->setEndValue(1);
  77     CustomPropertyAnimation *anim2 = new CustomPropertyAnimation(sub);
  78     anim2->setMemberFunctions((QGraphicsItem*)step2, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
  79     anim2->setDuration(100);
  80     anim2->setEndValue(1);
  81     CustomPropertyAnimation *anim3 = new CustomPropertyAnimation(sub);
  82     anim3->setMemberFunctions((QGraphicsItem*)step3, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
  83     anim3->setDuration(100);
  84     anim3->setEndValue(1);
  85     CustomPropertyAnimation *anim4 = new CustomPropertyAnimation(sub);
  86     anim4->setMemberFunctions((QGraphicsItem*)step4, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
  87     anim4->setDuration(100);
  88     anim4->setEndValue(1);
  89     group->addAnimation(anim1);
  90     group->addAnimation(anim2);
  91     group->addAnimation(anim3);
  92     group->addAnimation(anim4);
  93 #else
  94     // work around for a bug where we don't transition if the duration is zero.
  95     QtPauseAnimation *anim = new QtPauseAnimation(group);
  96     anim->setDuration(1);
  97     group->addAnimation(anim);
  98 #endif
  99     AnimationManager::self()->registerAnimation(group);
 100     return group;
 101 }
 102
 103
 104 SubMarine::SubMarine(int type, const QString &name, int points, QGraphicsItem * parent, Qt::WindowFlags wFlags)
 105     : QGraphicsWidget(parent,wFlags), subType(type), subName(name), subPoints(points), speed(0), direction(SubMarine::None)
 106 {
 107     pixmapItem = new PixmapItem(QString("submarine"),GraphicsScene::Big, this);
 108     setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
 109     setZValue(5);
 110     setFlags(QGraphicsItem::ItemIsMovable);
 111     resize(pixmapItem->boundingRect().width(),pixmapItem->boundingRect().height());
 112     setTransformOriginPoint(boundingRect().center());
 113
 114     graphicsRotation = new QGraphicsRotation(this);
 115     graphicsRotation->setAxis(QVector3D(0, 1, 0));
 116     graphicsRotation->setOrigin(QVector3D(size().width()/2, size().height()/2, 0));
 117     QList<QGraphicsTransform *> r;
 118     r.append(graphicsRotation);
 119     setTransformations(r);
 120
 121     //We setup the state machine of the submarine
 122     QStateMachine *machine = new QStateMachine(this);
 123
 124     //This state is when the boat is moving/rotating
 125     QState *moving = new QState(machine);
 126
 127     //This state is when the boat is moving from left to right
 128     MovementState *movement = new MovementState(this, moving);
 129
 130     //This state is when the boat is moving from left to right
 131     ReturnState *rotation = new ReturnState(this, moving);
 132
 133     //This is the initial state of the moving root state
 134     moving->setInitialState(movement);
 135
 136     movement->addTransition(this, SIGNAL(subMarineStateChanged()), moving);
 137
 138     //This is the initial state of the machine
 139     machine->setInitialState(moving);
 140
 141     //End
 142     QFinalState *final = new QFinalState(machine);
 143
 144     //If the moving animation is finished we move to the return state
 145     movement->addTransition(movement, SIGNAL(animationFinished()), rotation);
 146
 147     //If the return animation is finished we move to the moving state
 148     rotation->addTransition(rotation, SIGNAL(animationFinished()), movement);
 149
 150     //This state play the destroyed animation
 151     QAnimationState *destroyedState = new QAnimationState(machine);
 152     destroyedState->setAnimation(setupDestroyAnimation(this));
 153
 154     //Play a nice animation when the submarine is destroyed
 155     moving->addTransition(this, SIGNAL(subMarineDestroyed()), destroyedState);
 156
 157     //Transition to final state when the destroyed animation is finished
 158     destroyedState->addTransition(destroyedState, SIGNAL(animationFinished()), final);
 159
 160     //The machine has finished to be executed, then the submarine is dead
 161     connect(machine,SIGNAL(finished()),this, SIGNAL(subMarineExecutionFinished()));
 162
 163     machine->start();
 164 }
 165
 166 int SubMarine::points()
 167 {
 168     return subPoints;
 169 }
 170
 171 void SubMarine::setCurrentDirection(SubMarine::Movement direction)
 172 {
 173     if (this->direction == direction)
 174         return;
 175     if (direction == SubMarine::Right && this->direction == SubMarine::None) {
 176           graphicsRotation->setAngle(180);
 177     }
 178     this->direction = direction;
 179 }
 180
 181 enum SubMarine::Movement SubMarine::currentDirection() const
 182 {
 183     return direction;
 184 }
 185
 186 void SubMarine::setCurrentSpeed(int speed)
 187 {
 188     if (speed < 0 || speed > 3) {
 189         qWarning("SubMarine::setCurrentSpeed : The speed is invalid");
 190     }
 191     this->speed = speed;
 192     emit subMarineStateChanged();
 193 }
 194
 195 int SubMarine::currentSpeed() const
 196 {
 197     return speed;
 198 }
 199
 200 void SubMarine::launchTorpedo(int speed)
 201 {
 202     Torpedo * torp = new Torpedo();
 203     GraphicsScene *scene = static_cast<GraphicsScene *>(this->scene());
 204     scene->addItem(torp);
 205     torp->setPos(x(), y());
 206     torp->setCurrentSpeed(speed);
 207     torp->launch();
 208 }
 209
 210 void SubMarine::destroy()
 211 {
 212     emit subMarineDestroyed();
 213 }
 214
 215 int SubMarine::type() const
 216 {
 217     return Type;
 218 }