In this sample, we will create a simple Qt Window with one button to activate a logic with one lamp (that turns green when a logic starts).
In Qt Creator, create a Qt Gui Application:
Click until the end of the setup.
Now, in main.cpp file, add the following:
|
#include "vt_rtc.h"
Vt_RTC* vt_rtc = NULL;
// =========================================================================
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
...
|
in mainwindow.cpp file, add the following:
|
#include "QDebug"
#include "vt_rtc.h"
#include "myTestQt.h" // vsTasker database header
|
then change the MainWindow constructor with the following one:
|
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
vt_rtc = new Vt_RTC;
autorun();
connect(&loop_timer, SIGNAL(timeout()), this, SLOT(loopTimer()));
loop_timer.setInterval(33); // 33 milliseconds, 30hz
loop_timer.start();
ui->setupUi(this);
}
|
and the destructor with this one:
|
MainWindow::~MainWindow()
{
delete ui;
delete vt_rtc;
}
|
Now, let's define the vsTASKER runtime loop (called above loopTimer):
|
void MainWindow::loopTimer()
{
static int lb=0, s=0;
if (++lb==30) { // low band 1hz, always useful for tracing
lb = 0;
qDebug() << ++s;
}
if (vt_rtc->isOn()) {
vt_rtc->tic(); // mandatory, to call the runtime node cycle
if (vt_rtc->isRunning()) {
ui->startLogic->setEnabled(true); // allow button to be used
// get the entity
Vt_Entity* myEnt = vt_rtc->scenario->findEntity("myEnt");
if (myEnt) { // find the logic
Vt_Logic* start = myEnt->findLogic("myLogic");
if (start->isEnabled()) ui->logic->setStyleSheet("background-color: rgb(0, 255, 0)"); // green
else ui->logic->setStyleSheet("background-color: rgb(100, 100, 100)"); // gray
}
else ui->startLogic->setEnabled(false); // must start the simulation first
}
else {
exit(0); // we have a problem !
}
}
|
In mainwindow.h, add the following code emphasized in bold:
|
#include <QTimer>
private slots:
void loopTimer();
private:
Ui::MainWindow *ui;
QTimer loop_timer;
|
Now, in vsTASKER, create a new database, called myTestQt and save it
Back in Qt Creator, right click on the myTest project and
Select in /gen/ the three files: myTestQt.h, myTestQt_code.cpp and myTestQt_intfc.cpp
Now, open the myTest.pro and add the following:
|
QMAKE_CXXFLAGS += -Zc:strictStrings-
INCLUDEPATH += . \
$(VSTASKER_DIR)/include \
$(VSTASKER_DIR)/include/engine \
$(VSTASKER_DIR)/feature/include \
$(VSTASKER_DIR)/sprite/include \
$(VSTASKER_DIR)/plugins/include \
$(VSTASKER_DIR)/model/include \
$(VSTASKER_DIR)/src/template \
$(VSTASKER_DIR)/gen
LIBS += -L$(VSTASKER_DIR)/Lib/vc90/ -lglut32 \
-L$(VSTASKER_DIR)/Lib/vc90/ -lsdl \
-L$(VSTASKER_DIR)/Lib/vc90/ -lsdl_image \
-L$(VSTASKER_DIR)/Lib/vc90/ -lvstasker \
-L$(VSTASKER_DIR)/Lib/vc90/ -lvstasker_sim \
-L$(VSTASKER_DIR)/Lib/vc90/ -lspattern \
-L$(VSTASKER_DIR)/Lib/vc90/ -lspzone \
-L$(VSTASKER_DIR)/Lib/vc90/ -ltraj \
-L$(VSTASKER_DIR)/Lib/vc90/ -lpath \
-L$(VSTASKER_DIR)/Lib/vc90/ -lpoint \
-lwsock32 \
-luser32 \
-lgdi32 \
-lopengl32 \
-lglu32 \
-lfreetype \
-lorbitcore \
-lorbittools
|
Now, open the mainwindow.ui and add one button, called startLogic and one QWidget called logic and give it the following style-sheet: background-color: rgb(100, 100, 100);
You should then have:
Now, right click on the startLogic widget, , then add the following code:
|
void MainWindow::on_startLogic_clicked()
{
if (vt_rtc->isRunning()) {
// get car entity
Entity* myEnt = (Entity*) vt_rtc->scenario->findEntity("myEnt");
if (myEnt) myEnt->raiseEvent("start");
}
}
|
Now, in vsTASKER, add one entity and name it myEnt
Create one logic "myLogic" with the following (one delay set with a fix time of 20 seconds and a Perform action.
Give this logic to myEnt with an activation on event "start". but do not compile yet.
Back in Qt Creator, build and run in debug mode (good practice):
In vsTASKER GUI, start running the scenario.
On the UI window (below), click the button and see the lamp changing from gray to green then after 20 seconds, back to gray (when the logic ends)
When things work, you can add the Qt Viewer on the vsTASKER database.
Add it normally, then set the Build Directory where Qt Creator stores generated code of your myTest project:
You can now start adding new logics and rebuild the window application like you would do with another viewer.
Use Qt Creator anytime you need to change the UI or change the way it must react with the simulation engine.
