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50
51#ifndef SUBMARINE_P_H
52#define SUBMARINE_P_H
53
54//
55// W A R N I N G
56// -------------
57//
58// This file is not part of the Qt API. It exists purely as an
59// implementation detail. This header file may change from version to
60// version without notice, or even be removed.
61//
62// We mean it.
63//
64
65//Own
66#include "animationmanager.h"
67#include "submarine.h"
68#include "qanimationstate.h"
69
70//Qt
71#include <QPropertyAnimation>
72#include <QRandomGenerator>
73
74//This state is describing when the boat is moving right
75class MovementState : public QAnimationState
76{
77Q_OBJECT
78public:
79 explicit MovementState(SubMarine *submarine, QState *parent = nullptr) : QAnimationState(parent)
80 {
81 movementAnimation = new QPropertyAnimation(submarine, "pos");
82 connect(sender: movementAnimation, signal: &QPropertyAnimation::valueChanged,
83 receiver: this, slot: &MovementState::onAnimationMovementValueChanged);
84 setAnimation(movementAnimation);
85 AnimationManager::self()->registerAnimation(anim: movementAnimation);
86 this->submarine = submarine;
87 }
88
89protected slots:
90 void onAnimationMovementValueChanged(const QVariant &)
91 {
92 if (QRandomGenerator::global()->bounded(highest: 200) + 1 == 3)
93 submarine->launchTorpedo(speed: QRandomGenerator::global()->bounded(highest: 3) + 1);
94 }
95
96protected:
97 void onEntry(QEvent *e) override
98 {
99 if (submarine->currentDirection() == SubMarine::Left) {
100 movementAnimation->setEndValue(QPointF(0,submarine->y()));
101 movementAnimation->setDuration(submarine->x()/submarine->currentSpeed()*12);
102 }
103 else /*if (submarine->currentDirection() == SubMarine::Right)*/ {
104 movementAnimation->setEndValue(QPointF(submarine->scene()->width()-submarine->size().width(),submarine->y()));
105 movementAnimation->setDuration((submarine->scene()->width()-submarine->size().width()-submarine->x())/submarine->currentSpeed()*12);
106 }
107 QAnimationState::onEntry(e);
108 }
109
110private:
111 SubMarine *submarine;
112 QPropertyAnimation *movementAnimation;
113};
114
115//This state is describing when the boat is moving right
116class ReturnState : public QAnimationState
117{
118public:
119 explicit ReturnState(SubMarine *submarine, QState *parent = nullptr) : QAnimationState(parent)
120 {
121 returnAnimation = new QPropertyAnimation(submarine->rotation(), "angle");
122 returnAnimation->setDuration(500);
123 AnimationManager::self()->registerAnimation(anim: returnAnimation);
124 setAnimation(returnAnimation);
125 this->submarine = submarine;
126 }
127
128protected:
129 void onEntry(QEvent *e) override
130 {
131 returnAnimation->stop();
132 returnAnimation->setEndValue(submarine->currentDirection() == SubMarine::Right ? 360. : 180.);
133 QAnimationState::onEntry(e);
134 }
135
136 void onExit(QEvent *e) override
137 {
138 submarine->currentDirection() == SubMarine::Right ? submarine->setCurrentDirection(SubMarine::Left) : submarine->setCurrentDirection(SubMarine::Right);
139 QAnimationState::onExit(e);
140 }
141
142private:
143 SubMarine *submarine;
144 QPropertyAnimation *returnAnimation;
145};
146
147#endif // SUBMARINE_P_H
148

source code of qtbase/examples/widgets/animation/sub-attaq/submarine_p.h