创建路由

// declare points between which a route should be calculated
Unigine::Math::Vec3 p0 = Unigine::Math::Vec3(-60.0f, -60.0f, 5.0f);
Unigine::Math::Vec3 p1 = Unigine::Math::Vec3(60.0f, 60.0f, 5.0f);

// create a new route
route = PathRoute::create();
// set a radius for the point which will move along the route
route->setRadius(1.2f);

// create a 3D route
route->create3D(p0,p1);

route->renderVisualizer(vec4(1.0f));

sector->renderVisualizer();

#ifndef __APP_WORLD_LOGIC_H__
#define __APP_WORLD_LOGIC_H__

#include <UnigineLogic.h>
#include <UnigineStreams.h>
#include <UnigineObjects.h>
#include <UniginePathFinding.h>

class AppWorldLogic : public Unigine::WorldLogic
{

public:
	AppWorldLogic();
	virtual ~AppWorldLogic();

	int init() override;

	int update() override;
	int postUpdate() override;
	int updatePhysics() override;

	int shutdown() override;

	int save(const Unigine::StreamPtr &stream) override;
	int restore(const Unigine::StreamPtr &stream) override;

private:

	// declare the required variables
	Unigine::ObstacleBoxPtr box_obstacle;
	Unigine::ObjectMeshStaticPtr box;
	Unigine::PathRoutePtr route;

	// declare points between which a route should be calculated
	Unigine::Math::Vec3 p0 = Unigine::Math::Vec3(-60.0f, -60.0f, 5.0f);
	Unigine::Math::Vec3 p1 = Unigine::Math::Vec3(60.0f, 60.0f, 5.0f);

};

#endif // __APP_WORLD_LOGIC_H__

#include "AppWorldLogic.h"
#include <UnigineEditor.h>
#include <UnigineGame.h>
#include <UnigineVisualizer.h>
#include <UnigineLog.h>

using namespace Unigine;
using namespace Math;

// World logic, it takes effect only when the world is loaded.
// These methods are called right after corresponding world script's (UnigineScript) methods.

AppWorldLogic::AppWorldLogic()
{
}

AppWorldLogic::~AppWorldLogic()
{
}

int AppWorldLogic::init()
{
	// enable the engine visualizer
	Visualizer::setEnabled(1);

	// create a navigation sector within which pathfinding will be performed
	NavigationSectorPtr navigation = NavigationSector::create(vec3(128.0f, 128.0f, 8.0f));
	navigation->setWorldTransform(translate(Vec3(1.0f, 1.0f, 5.0f)));

	// create the ObjectMeshStatic that should be bypassed
	box = ObjectMeshStatic::create("core/meshes/box.mesh");
	box->setPosition(Vec3(2.0f, 2.2f, 1.5f));
	box->setScale(vec3(2.0f, 2.0f, 2.0f));

	// create an obstacle
	box_obstacle = ObstacleBox::create(vec3(1.2f, 1.2f, 1.2f));
	box_obstacle->setPosition(Vec3(0.0f, 0.0f, 0.0f));

	// add the obstacle as the child node to the mesh in order to change their transformation simultaneously
	box->addChild(box_obstacle);

	// create a new route
	route = PathRoute::create();
	// set a radius for the point which will move along the route
	route->setRadius(1.2f);

	return 1;
}

////////////////////////////////////////////////////////////////////////////////
// start of the main loop
////////////////////////////////////////////////////////////////////////////////

int AppWorldLogic::update()
{
	// get the frame duration
	float ifps = Game::getIFps();
	// and define the angle of the object's rotation
	float angle = ifps * 90.0f;

	// change transformation of the mesh
	box->setTransform(box->getTransform() * Mat4(rotateZ(angle)));
	// render the bounding box of the obstacle
	box_obstacle->renderVisualizer();

	// recalculate the route in the current frame and render its visualizer
	route->create2D(p0, p1);
	if (route->isReached()) route->renderVisualizer(vec4(1.0f));
	else Log::message("PathRoute failed"); 
	
	return 1;
}

int AppWorldLogic::postUpdate()
{
	// The engine calls this function after updating each render frame: correct behavior after the state of the node has been updated.
	return 1;
}

int AppWorldLogic::updatePhysics()
{
	// Write here code to be called before updating each physics frame: control physics in your application and put non-rendering calculations.
	// The engine calls updatePhysics() with the fixed rate (60 times per second by default) regardless of the FPS value.
	// WARNING: do not create, delete or change transformations of nodes here, because rendering is already in progress.
	return 1;
}

////////////////////////////////////////////////////////////////////////////////
// end of the main loop
////////////////////////////////////////////////////////////////////////////////

int AppWorldLogic::shutdown()
{
	// Write here code to be called on world shutdown: delete resources that were created during world script execution to avoid memory leaks.
	return 1;
}

int AppWorldLogic::save(const Unigine::StreamPtr &stream)
{
	// Write here code to be called when the world is saving its state (i.e. state_save is called): save custom user data to a file.
	UNIGINE_UNUSED(stream);
	return 1;
}

int AppWorldLogic::restore(const Unigine::StreamPtr &stream)
{
	// Write here code to be called when the world is restoring its state (i.e. state_restore is called): restore custom user data to a file here.
	UNIGINE_UNUSED(stream);
	return 1;
}