demos/sub-attaq/boat_p.h

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  41
  42 #ifndef BOAT_P_H
  43 #define BOAT_P_H
  44
  45 //
  46 //  W A R N I N G
  47 //  -------------
  48 //
  49 // This file is not part of the Qt API.  It exists purely as an
  50 // implementation detail.  This header file may change from version to
  51 // version without notice, or even be removed.
  52 //
  53 // We mean it.
  54 //
  55
  56 //Own
  57 #include "bomb.h"
  58 #include "graphicsscene.h"
  59
  60 // Qt
  61 #include <QtGui/QKeyEventTransition>
  62
  63 static const int MAX_BOMB = 5;
  64
  65
  66 //These transtion test if we have to stop the boat (i.e current speed is 1)
  67 class KeyStopTransition : public QKeyEventTransition
  68 {
  69 public:
  70     KeyStopTransition(Boat *boat, QEvent::Type type, int key)
  71     : QKeyEventTransition(boat, type, key)
  72     {
  73         this->boat = boat;
  74         this->key = key;
  75     }
  76 protected:
  77     virtual bool eventTest(QEvent *event)
  78     {
  79         Q_UNUSED(event);
  80         if (!QKeyEventTransition::eventTest(event))
  81             return false;
  82         if (boat->currentSpeed() == 1)
  83             return true;
  84         else
  85             return false;
  86     }
  87 private:
  88     Boat * boat;
  89     int key;
  90 };
  91
  92 //These transtion test if we have to move the boat (i.e current speed was 0 or another value)
  93  class KeyMoveTransition : public QKeyEventTransition
  94 {
  95 public:
  96     KeyMoveTransition(Boat *boat, QEvent::Type type, int key)
  97     : QKeyEventTransition(boat, type, key)
  98     {
  99         this->boat = boat;
 100         this->key = key;
 101     }
 102 protected:
 103     virtual bool eventTest(QEvent *event)
 104     {
 105         Q_UNUSED(event);
 106         if (!QKeyEventTransition::eventTest(event))
 107             return false;
 108         if (boat->currentSpeed() >= 0)
 109             return true;
 110         else
 111             return false;
 112
 113     }
 114     void onTransition(QEvent *)
 115     {
 116         //We decrease the speed if needed
 117         if (key == Qt::Key_Left && boat->currentDirection() == Boat::Right)
 118             boat->setCurrentSpeed(boat->currentSpeed() - 1);
 119         else if (key == Qt::Key_Right && boat->currentDirection() == Boat::Left)
 120             boat->setCurrentSpeed(boat->currentSpeed() - 1);
 121         else if (boat->currentSpeed() < 3)
 122             boat->setCurrentSpeed(boat->currentSpeed() + 1);
 123         boat->updateBoatMovement();
 124     }
 125 private:
 126     Boat * boat;
 127     int key;
 128 };
 129
 130 //This transition trigger the bombs launch
 131  class KeyLaunchTransition : public QKeyEventTransition
 132 {
 133 public:
 134     KeyLaunchTransition(Boat *boat, QEvent::Type type, int key)
 135     : QKeyEventTransition(boat, type, key)
 136     {
 137         this->boat = boat;
 138         this->key = key;
 139     }
 140 protected:
 141     virtual bool eventTest(QEvent *event)
 142     {
 143         Q_UNUSED(event);
 144         if (!QKeyEventTransition::eventTest(event))
 145             return false;
 146         //We have enough bomb?
 147         if (boat->bombsLaunched() < MAX_BOMB)
 148             return true;
 149         else
 150             return false;
 151     }
 152 private:
 153     Boat * boat;
 154     int key;
 155 };
 156
 157 //This state is describing when the boat is moving right
 158 class MoveStateRight : public QState
 159 {
 160 public:
 161     MoveStateRight(Boat *boat,QState *parent = 0) : QState(parent)
 162     {
 163         this->boat = boat;
 164     }
 165 protected:
 166     void onEntry(QEvent *)
 167     {
 168         boat->setCurrentDirection(Boat::Right);
 169         boat->updateBoatMovement();
 170     }
 171 private:
 172     Boat * boat;
 173 };
 174
 175  //This state is describing when the boat is moving left
 176 class MoveStateLeft : public QState
 177 {
 178 public:
 179     MoveStateLeft(Boat *boat,QState *parent = 0) : QState(parent)
 180     {
 181         this->boat = boat;
 182     }
 183 protected:
 184     void onEntry(QEvent *)
 185     {
 186         boat->setCurrentDirection(Boat::Left);
 187         boat->updateBoatMovement();
 188     }
 189 private:
 190     Boat * boat;
 191 };
 192
 193 //This state is describing when the boat is in a stand by position
 194 class StopState : public QState
 195 {
 196 public:
 197     StopState(Boat *boat,QState *parent = 0) : QState(parent)
 198     {
 199         this->boat = boat;
 200     }
 201 protected:
 202     void onEntry(QEvent *)
 203     {
 204         boat->setCurrentSpeed(0);
 205         boat->setCurrentDirection(Boat::None);
 206         boat->updateBoatMovement();
 207     }
 208 private:
 209     Boat * boat;
 210 };
 211
 212 //This state is describing the launch of the torpedo on the right
 213 class LaunchStateRight : public QState
 214 {
 215 public:
 216     LaunchStateRight(Boat *boat,QState *parent = 0) : QState(parent)
 217     {
 218         this->boat = boat;
 219     }
 220 protected:
 221     void onEntry(QEvent *)
 222     {
 223         Bomb *b = new Bomb();
 224         b->setPos(boat->x()+boat->size().width(),boat->y());
 225         GraphicsScene *scene = static_cast<GraphicsScene *>(boat->scene());
 226         scene->addItem(b);
 227         b->launch(Bomb::Right);
 228         boat->setBombsLaunched(boat->bombsLaunched() + 1);
 229     }
 230 private:
 231     Boat * boat;
 232 };
 233
 234 //This state is describing the launch of the torpedo on the left
 235 class LaunchStateLeft : public QState
 236 {
 237 public:
 238     LaunchStateLeft(Boat *boat,QState *parent = 0) : QState(parent)
 239     {
 240         this->boat = boat;
 241     }
 242 protected:
 243     void onEntry(QEvent *)
 244     {
 245         Bomb *b = new Bomb();
 246         b->setPos(boat->x() - b->size().width(), boat->y());
 247         GraphicsScene *scene = static_cast<GraphicsScene *>(boat->scene());
 248         scene->addItem(b);
 249         b->launch(Bomb::Left);
 250         boat->setBombsLaunched(boat->bombsLaunched() + 1);
 251     }
 252 private:
 253     Boat * boat;
 254 };
 255
 256 #endif // BOAT_P_H