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FlightSimApp.cpp
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FlightSimApp.cpp
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/* Copyright 2012-2020 Matthew Reid
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
#include <ExamplesCommon/EntityInputSystem.h>
#include <ExamplesCommon/HudSystem.h>
#include <ExamplesCommon/HelpDisplayRenderOperation.h>
#include <ExamplesCommon/HelpDisplayToggleEventListener.h>
#include <ExamplesCommon/VisRootUtil.h>
#include <ExamplesCommon/WindowUtil.h>
#include <SkyboltEngine/CameraInputSystem.h>
#include <SkyboltEngine/EngineCommandLineParser.h>
#include <SkyboltEngine/EngineRoot.h>
#include <SkyboltEngine/EngineRootFactory.h>
#include <SkyboltEngine/EntityFactory.h>
#include <SkyboltEngine/WindowUtil.h>
#include <SkyboltEngine/Diagnostics/StatsDisplaySystem.h>
#include <SkyboltEngine/Input/InputPlatformOsg.h>
#include <SkyboltEngine/Input/InputSystem.h>
#include <SkyboltEngine/Input/LogicalAxis.h>
#include <SkyboltEngine/SimVisBinding/CameraSimVisBinding.h>
#include <SkyboltEngine/SimVisBinding/SimVisSystem.h>
#include <SkyboltEngine/UpdateLoop/UpdateLoopUtility.h>
#include <SkyboltSim/World.h>
#include <SkyboltSim/CameraController/CameraControllerSelector.h>
#include <SkyboltSim/CameraController/OrbitCameraController.h>
#include <SkyboltSim/Components/CameraComponent.h>
#include <SkyboltSim/Components/CameraControllerComponent.h>
#include <SkyboltSim/Physics/Astronomy.h>
#include <SkyboltSim/Spatial/Orientation.h>
#include <SkyboltSim/Spatial/Position.h>
#include <SkyboltSim/System/System.h>
#include <SkyboltVis/Camera.h>
#include <SkyboltVis/VisRoot.h>
#include <SkyboltVis/Scene.h>
#include <SkyboltVis/RenderOperation/RenderCameraViewport.h>
#include <SkyboltVis/RenderOperation/RenderOperationOrder.h>
#include <SkyboltVis/RenderOperation/RenderTarget.h>
#include <SkyboltVis/Window/StandaloneWindow.h>
#include <SkyboltCommon/Exception.h>
#include <SkyboltCommon/Json/ReadJsonFile.h>
using namespace skybolt;
using namespace skybolt::sim;
using namespace skybolt::vis;
static void createEnvironmentEntities(const EntityFactory& entityFactory, World& world)
{
world.addEntity(entityFactory.createEntity("Stars"));
world.addEntity(entityFactory.createEntity("SunBillboard"));
world.addEntity(entityFactory.createEntity("MoonBillboard"));
world.addEntity(entityFactory.createEntity("PlanetEarth"));
}
static std::vector<LogicalAxisPtr> createHelicopterInputAxesKeyboard(const InputPlatform& inputPlatform)
{
InputDevicePtr keyboard = inputPlatform.getInputDevicesOfType(InputDeviceTypeKeyboard)[0];
float rate = 10;
std::vector<LogicalAxisPtr> logicalAxes;
logicalAxes.push_back(std::make_shared<KeyAxis>(keyboard, KC_DOWN, KC_UP, rate, rate, -1.0f, 1.0f));
logicalAxes.push_back(std::make_shared<KeyAxis>(keyboard, KC_LEFT, KC_RIGHT, rate, rate, -1.0f, 1.0f));
logicalAxes.push_back(std::make_shared<KeyAxis>(keyboard, KC_S, KC_W, 1.0, 0.0, 0.0f, 1.0f, 0.5f));
logicalAxes.push_back(std::make_shared<KeyAxis>(keyboard, KC_A, KC_D, rate, rate, -1.0f, 1.0f));
return logicalAxes;
}
class CameraViewSelector : public EventListener
{
public:
CameraViewSelector(const CameraControllerComponentPtr& cameraController, const std::shared_ptr<HudSystem>& hudSystem, const std::function<void(bool)>& hudVisibilitySwitch) :
mCameraController(cameraController),
mHudSystem(hudSystem),
mHudVisibilitySwitch(hudVisibilitySwitch)
{
assert(mCameraController);
assert(mHudSystem);
mCameraController->selectController("Cockpit");
}
void onEvent(const Event& event) override
{
if (const KeyEvent* keyEvent = dynamic_cast<const KeyEvent*>(&event))
{
if (keyEvent->type == KeyEvent::Pressed)
{
switch (keyEvent->code)
{
case KC_F1:
{
mCameraController->selectController("Cockpit");
mHudSystem->setPitchLadderVisible(true);
mHudVisibilitySwitch(true);
break;
}
case KC_F2:
{
mCameraController->selectController("Follow");
mHudSystem->setPitchLadderVisible(false);
mHudVisibilitySwitch(true);
break;
}
}
}
}
}
private:
CameraControllerComponentPtr mCameraController;
std::shared_ptr<HudSystem> mHudSystem;
std::function<void(bool)> mHudVisibilitySwitch;
};
static osg::ref_ptr<HelpDisplayRenderOperation> createHelpDisplay()
{
std::string helpMessage =
R"(= Controls =
W: Collective up
S: Collective down
A: Pedel Left
D: Pedel Right
Up arrow: Cyclic forward
Down arrow: Cyclic aft
Left arrow: Cyclic left
Right arrow: Cyclic right
F1: Cockpit view
F2: External view
H: Toggle help message
Esc: Exit
Mouse: Pan camera
)";
osg::ref_ptr<HelpDisplayRenderOperation> helpDisplay = new HelpDisplayRenderOperation();
helpDisplay->setMessage(helpMessage);
return helpDisplay;
}
int main(int argc, char *argv[])
{
try
{
// Parse commandline arguments
boost::program_options::options_description desc;
desc.add_options()("multiwindow", "demonstrate rendering to multiple display windows");
EngineCommandLineParser::addOptions(desc);
auto params = EngineCommandLineParser::parse(argc, argv, desc);
// Create engine
std::unique_ptr<EngineRoot> engineRoot = EngineRootFactory::create(params);
// Create camera
EntityPtr simCamera = engineRoot->entityFactory->createEntity("Camera");
engineRoot->scenario->world.addEntity(simCamera);
// Configure external view camera controller
auto cameraControllerComponent = simCamera->getFirstComponentRequired<CameraControllerComponent>();
auto orbitController = cameraControllerComponent->getControllerOfType<OrbitCameraController>();
orbitController->setLagTimeConstant(0.3);
orbitController->setTargetOffset(sim::Vector3(0, 0, -3));
orbitController->setZoom(0.8);
auto visRoot = createExampleVisRoot();
// Attach camera to window
vis::WindowPtr window = createExampleWindow();
osg::ref_ptr<vis::RenderCameraViewport> viewport = createAndAddViewportToWindowWithEngine(*window, *engineRoot);
viewport->setCamera(getVisCamera(*simCamera));
visRoot->addWindow(window);
CameraControllerComponentPtr cameraControllerComponent2;
if (params.count("multiwindow"))
{
sim::EntityPtr simCamera2 = engineRoot->entityFactory->createEntity("Camera");
engineRoot->scenario->world.addEntity(simCamera2);
cameraControllerComponent2 = simCamera2->getFirstComponentRequired<CameraControllerComponent>();
cameraControllerComponent2->selectController("Follow");
vis::WindowPtr window2 = std::make_unique<vis::StandaloneWindow>(vis::RectI(1080, 0, 1080, 720));
osg::ref_ptr<vis::RenderCameraViewport> viewport2 = createAndAddViewportToWindowWithEngine(*window2, *engineRoot);
viewport2->setCamera(getVisCamera(*simCamera2));
visRoot->addWindow(window2);
}
// Create input
auto inputPlatform = std::make_shared<InputPlatformOsg>(window->getView());
std::vector<LogicalAxisPtr> axes = createHelicopterInputAxesKeyboard(*inputPlatform);
// Create systems
engineRoot->systemRegistry->push_back(std::make_shared<InputSystem>(inputPlatform, axes));
auto cameraInputSystem = std::make_shared<CameraInputSystem>(inputPlatform);
configure(*cameraInputSystem, window->getWidth(), engineRoot->engineSettings);
connectToCamera(*cameraInputSystem, simCamera);
engineRoot->systemRegistry->push_back(cameraInputSystem);
osg::ref_ptr<osg::Camera> overlayCamera = viewport->getFinalRenderTarget()->getOsgCamera();
osg::ref_ptr<HelpDisplayRenderOperation> helpDisplay = createHelpDisplay();
window->getRenderOperationSequence().addOperation(helpDisplay, (int)RenderOperationOrder::Hud);
auto entityInputSystem = std::make_shared<EntityInputSystem>(axes);
engineRoot->systemRegistry->push_back(entityInputSystem);
auto hudSystem = std::make_shared<HudSystem>(overlayCamera, [&] { return getVisCamera(*simCamera)->getFovY(); });
engineRoot->systemRegistry->push_back(hudSystem);
// Register input event listeners
auto hudVisibilitySwitch = [&](bool visible) {
hudSystem->setEnabled(visible);
};
auto cameraViewSelector = std::make_shared<CameraViewSelector>(cameraControllerComponent, hudSystem, hudVisibilitySwitch);
inputPlatform->getEventEmitter()->addEventListener<KeyEvent>(cameraViewSelector.get());
auto helpDisplayToggleEventListener = std::make_shared<HelpDisplayToggleEventListener>(helpDisplay);
inputPlatform->getEventEmitter()->addEventListener<KeyEvent>(helpDisplayToggleEventListener.get());
//#define SHOW_STATS
#ifdef SHOW_STATS
engineRoot->systemRegistry->push_back(std::make_shared<StatsDisplaySystem>(&visRoot->getViewer(), window->getView(), overlayCamera));
#endif
// Create entities
createEnvironmentEntities(*engineRoot->entityFactory, engineRoot->scenario->world);
EntityPtr aircraft = engineRoot->entityFactory->createEntity("UH60");
engineRoot->scenario->world.addEntity(aircraft);
sim::LatLonAlt boeingFieldPosition(47.537 * math::degToRadD(), -122.307 * math::degToRadD(), 500);
setPosition(*aircraft, toGeocentric(sim::LatLonAltPosition(boeingFieldPosition)).position);
setOrientation(*aircraft, toGeocentric(sim::LtpNedOrientation(math::quatIdentity()), sim::toLatLon(boeingFieldPosition)).orientation);
// Configure systems for player's aircraft
entityInputSystem->setEntity(aircraft);
hudSystem->setEntity(aircraft.get());
cameraControllerComponent->setTargetId(aircraft->getId());
if (cameraControllerComponent2)
{
cameraControllerComponent2->setTargetId(aircraft->getId());
}
// Set time of day
engineRoot->scenario->startJulianDate = sim::calcJulianDate(/* year */ 2030, /* month */ 4, /* day */ 6, /* hour */ 20);
// Run loop
runMainLoop(*visRoot, *engineRoot, UpdateLoop::neverExit);
}
catch (const std::exception& e)
{
printf("%s\n", e.what());
}
return 0;
}