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#include "mainwindow.h"
#include "tankitem.h"
#include "rocketitem.h"
#include "plugin.h"
#include <QStateMachine>
#include <QGraphicsView>
#include <QAction>
#include <QMenuBar>
#include <QState>
#include <QHistoryState>
#include <QTimer>
#include <QFileDialog>
#include <QPluginLoader>
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent), m_scene(0), m_machine(0), m_runningState(0), m_started(false)
{
init();
}
MainWindow::~MainWindow()
{
}
void MainWindow::addWall(const QRectF &wall)
{
QGraphicsRectItem *item = new QGraphicsRectItem;
item->setRect(wall);
item->setBrush(Qt::darkGreen);
item->setPen(QPen(Qt::black, 0));
m_scene->addItem(item);
}
void MainWindow::init()
{
setWindowTitle("Pluggable Tank Game");
QGraphicsView *view = new QGraphicsView(this);
view->setRenderHints(QPainter::Antialiasing);
setCentralWidget(view);
m_scene = new QGraphicsScene(this);
view->setScene(m_scene);
QRectF sceneRect = QRectF(-200.0, -200.0, 400.0, 400.0);
m_scene->setSceneRect(sceneRect);
{
TankItem *item = new TankItem(this);
item->setPos(m_scene->sceneRect().topLeft() + QPointF(15.0, 15.0));
item->setDirection(45.0);
item->setColor(Qt::red);
m_spawns.append(item);
}
{
TankItem *item = new TankItem(this);
item->setPos(m_scene->sceneRect().topRight() + QPointF(-15.0, 15.0));
item->setDirection(135.0);
item->setColor(Qt::green);
m_spawns.append(item);
}
{
TankItem *item = new TankItem(this);
item->setPos(m_scene->sceneRect().bottomRight() + QPointF(-15.0, -15.0));
item->setDirection(225.0);
item->setColor(Qt::blue);
m_spawns.append(item);
}
{
TankItem *item = new TankItem(this);
item->setPos(m_scene->sceneRect().bottomLeft() + QPointF(15.0, -15.0));
item->setDirection(315.0);
item->setColor(Qt::yellow);
m_spawns.append(item);
}
QPointF centerOfMap = sceneRect.center();
addWall(QRectF(centerOfMap + QPointF(-50.0, -60.0), centerOfMap + QPointF(50.0, -50.0)));
addWall(QRectF(centerOfMap - QPointF(-50.0, -60.0), centerOfMap - QPointF(50.0, -50.0)));
addWall(QRectF(centerOfMap + QPointF(-50.0, -50.0), centerOfMap + QPointF(-40.0, 50.0)));
addWall(QRectF(centerOfMap - QPointF(-50.0, -50.0), centerOfMap - QPointF(-40.0, 50.0)));
addWall(QRectF(sceneRect.topLeft() + QPointF(sceneRect.width() / 2.0 - 5.0, 0.0),
sceneRect.topLeft() + QPointF(sceneRect.width() / 2.0 + 5.0, 100.0)));
addWall(QRectF(sceneRect.bottomLeft() + QPointF(sceneRect.width() / 2.0 - 5.0, 0.0),
sceneRect.bottomLeft() + QPointF(sceneRect.width() / 2.0 + 5.0, -100.0)));
addWall(QRectF(sceneRect.topLeft() + QPointF(0.0, sceneRect.height() / 2.0 - 5.0),
sceneRect.topLeft() + QPointF(100.0, sceneRect.height() / 2.0 + 5.0)));
addWall(QRectF(sceneRect.topRight() + QPointF(0.0, sceneRect.height() / 2.0 - 5.0),
sceneRect.topRight() + QPointF(-100.0, sceneRect.height() / 2.0 + 5.0)));
QAction *addTankAction = menuBar()->addAction("&Add tank");
QAction *runGameAction = menuBar()->addAction("&Run game");
runGameAction->setObjectName("runGameAction");
QAction *stopGameAction = menuBar()->addAction("&Stop game");
menuBar()->addSeparator();
QAction *quitAction = menuBar()->addAction("&Quit");
connect(addTankAction, SIGNAL(triggered()), this, SLOT(addTank()));
connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
m_machine = new QStateMachine(this);
QState *stoppedState = new QState(m_machine->rootState());
stoppedState->setObjectName("stoppedState");
stoppedState->assignProperty(runGameAction, "enabled", true);
stoppedState->assignProperty(stopGameAction, "enabled", false);
stoppedState->assignProperty(this, "started", false);
m_machine->setInitialState(stoppedState);
QState *spawnsAvailable = new QState(stoppedState);
spawnsAvailable->setObjectName("spawnsAvailable");
spawnsAvailable->assignProperty(addTankAction, "enabled", true);
QState *noSpawnsAvailable = new QState(stoppedState);
noSpawnsAvailable->setObjectName("noSpawnsAvailable");
noSpawnsAvailable->assignProperty(addTankAction, "enabled", false);
spawnsAvailable->addTransition(this, SIGNAL(mapFull()), noSpawnsAvailable);
QHistoryState *hs = new QHistoryState(stoppedState);
hs->setDefaultState(spawnsAvailable);
stoppedState->setInitialState(hs);
m_runningState = new QState(QState::ParallelStates, m_machine->rootState());
m_runningState->setObjectName("runningState");
m_runningState->assignProperty(addTankAction, "enabled", false);
m_runningState->assignProperty(runGameAction, "enabled", false);
m_runningState->assignProperty(stopGameAction, "enabled", true);
stoppedState->addTransition(runGameAction, SIGNAL(triggered()), m_runningState);
m_runningState->addTransition(stopGameAction, SIGNAL(triggered()), stoppedState);
QTimer *timer = new QTimer(this);
timer->setInterval(100);
connect(timer, SIGNAL(timeout()), this, SLOT(runStep()));
connect(m_runningState, SIGNAL(entered()), timer, SLOT(start()));
connect(m_runningState, SIGNAL(exited()), timer, SLOT(stop()));
m_machine->start();
m_time.start();
}
void MainWindow::runStep()
{
if (!m_started) {
m_time.restart();
m_started = true;
} else {
int elapsed = m_time.elapsed();
if (elapsed > 0) {
m_time.restart();
qreal elapsedSecs = elapsed / 1000.0;
QList<QGraphicsItem *> items = m_scene->items();
foreach (QGraphicsItem *item, items) {
if (GameItem *gameItem = qgraphicsitem_cast<GameItem *>(item))
gameItem->idle(elapsedSecs);
}
}
}
}
void MainWindow::addRocket()
{
TankItem *tankItem = qobject_cast<TankItem *>(sender());
if (tankItem != 0) {
RocketItem *rocketItem = new RocketItem;
QPointF s = tankItem->mapToScene(QPointF(tankItem->boundingRect().right() + 10.0,
tankItem->boundingRect().center().y()));
rocketItem->setPos(s);
rocketItem->setDirection(tankItem->direction());
m_scene->addItem(rocketItem);
}
}
void MainWindow::addTank()
{
Q_ASSERT(!m_spawns.isEmpty());
QString fileName = QFileDialog::getOpenFileName(this, "Select plugin file", "plugins/", "*.dll");
QPluginLoader loader(fileName);
Plugin *plugin = qobject_cast<Plugin *>(loader.instance());
if (plugin != 0) {
TankItem *tankItem = m_spawns.takeLast();
m_scene->addItem(tankItem);
connect(tankItem, SIGNAL(cannonFired()), this, SLOT(addRocket()));
if (m_spawns.isEmpty())
emit mapFull();
QState *region = new QState(m_runningState);
QState *pluginState = plugin->create(region, tankItem);
region->setInitialState(pluginState);
// If the plugin has an error it is disabled
QState *errorState = new QState(region);
errorState->assignProperty(tankItem, "enabled", false);
pluginState->setErrorState(errorState);
}
}
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