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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtWidgets>
#include "window.h"
#include "movementtransition.h"
//![0]
Window::Window()
{
pX = 5;
pY = 5;
//![0]
QFont font;
const QStringList families = QFontDatabase::families();
if (families.contains("Monospace")) {
font = QFont(QStringList{"Monospace"});
}
else {
for (const QString &family : families) {
if (QFontDatabase::isFixedPitch(family)) {
font = QFont(QStringList{family});
break;
}
}
}
font.setPointSize(12);
setFont(font);
//![1]
setupMap();
buildMachine();
}
//![1]
void Window::setStatus(const QString &status)
{
myStatus = status;
repaint();
}
QString Window::status() const
{
return myStatus;
}
void Window::paintEvent(QPaintEvent * /* event */)
{
QFontMetrics metrics(font());
QPainter painter(this);
int fontHeight = metrics.height();
int fontWidth = metrics.horizontalAdvance('X');
int yPos = fontHeight;
int xPos;
painter.fillRect(rect(), Qt::black);
painter.setPen(Qt::white);
painter.drawText(QPoint(0, yPos), status());
for (int y = 0; y < HEIGHT; ++y) {
yPos += fontHeight;
xPos = 0;
for (int x = 0; x < WIDTH; ++x) {
if (y == pY && x == pX) {
xPos += fontWidth;
continue;
}
painter.setPen(Qt::white);
double x1 = static_cast<double>(pX);
double y1 = static_cast<double>(pY);
double x2 = static_cast<double>(x);
double y2 = static_cast<double>(y);
if (x2<x1) {
x2+=0.5;
} else if (x2>x1) {
x2-=0.5;
}
if (y2<y1) {
y2+=0.5;
} else if (y2>y1) {
y2-=0.5;
}
double dx = x2 - x1;
double dy = y2 - y1;
double length = qSqrt(dx*dx+dy*dy);
dx /= length;
dy /= length;
double xi = x1;
double yi = y1;
while (length > 0) {
int cx = static_cast<int>(xi+0.5);
int cy = static_cast<int>(yi+0.5);
if (x2 == cx && y2 == cy)
break;
if (!(x1==cx && y1==cy)
&& (map[cx][cy] == '#' || (length-10) > 0)) {
painter.setPen(QColor(60,60,60));
break;
}
xi += dx;
yi += dy;
--length;
}
painter.drawText(QPoint(xPos, yPos), map[x][y]);
xPos += fontWidth;
}
}
painter.setPen(Qt::white);
painter.drawText(QPoint(pX * fontWidth, (pY + 2) * fontHeight), QChar('@'));
}
QSize Window::sizeHint() const
{
QFontMetrics metrics(font());
return QSize(metrics.horizontalAdvance('X') * WIDTH, metrics.height() * (HEIGHT + 1));
}
//![2]
void Window::buildMachine()
{
machine = new QStateMachine;
QState *inputState = new QState(machine);
inputState->assignProperty(this, "status", "Move the rogue with 2, 4, 6, and 8");
MovementTransition *transition = new MovementTransition(this);
inputState->addTransition(transition);
//![2]
//![3]
QState *quitState = new QState(machine);
quitState->assignProperty(this, "status", "Really quit(y/n)?");
QKeyEventTransition *yesTransition = new
QKeyEventTransition(this, QEvent::KeyPress, Qt::Key_Y);
yesTransition->setTargetState(new QFinalState(machine));
quitState->addTransition(yesTransition);
QKeyEventTransition *noTransition =
new QKeyEventTransition(this, QEvent::KeyPress, Qt::Key_N);
noTransition->setTargetState(inputState);
quitState->addTransition(noTransition);
//![3]
//![4]
QKeyEventTransition *quitTransition =
new QKeyEventTransition(this, QEvent::KeyPress, Qt::Key_Q);
quitTransition->setTargetState(quitState);
inputState->addTransition(quitTransition);
//![4]
//![5]
machine->setInitialState(inputState);
connect(machine, &QStateMachine::finished,
qApp, &QApplication::quit);
machine->start();
}
//![5]
void Window::movePlayer(Direction direction)
{
switch (direction) {
case Left:
if (map[pX - 1][pY] != '#')
--pX;
break;
case Right:
if (map[pX + 1][pY] != '#')
++pX;
break;
case Up:
if (map[pX][pY - 1] != '#')
--pY;
break;
case Down:
if (map[pX][pY + 1] != '#')
++pY;
break;
}
repaint();
}
void Window::setupMap()
{
for (int x = 0; x < WIDTH; ++x)
for (int y = 0; y < HEIGHT; ++y) {
if (x == 0 || x == WIDTH - 1 || y == 0 || y == HEIGHT - 1 || QRandomGenerator::global()->bounded(40) == 0)
map[x][y] = '#';
else
map[x][y] = '.';
}
}
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