Accessing Nodes and Files via Properties

#include "AppWorldLogic.h"
#include <UnigineMaterials.h>
#include <UnigineSounds.h>
#include <UnigineGame.h>
#include <UnigineWorld.h>
#include <UnigineFileSystem.h>

using namespace Unigine;
using namespace Math;
NodePtr my_node;                   // node to which a property with links is assigned
PropertyPtr property;              // property with all necessary links
MaterialPtr material;              // linked material
NodePtr param_node;                // linked node 
SoundSourcePtr sound;	      	   // sound source to be played 
ObjectMeshStaticPtr generated_obj; // object to be generated using the mesh

AppWorldLogic::AppWorldLogic() {

}

AppWorldLogic::~AppWorldLogic() {

}

int AppWorldLogic::init() {
	// getting the node to which a property with links to assets is assigned 
	my_node = World::getNodeByName("my_object");

	// getting the property, that will be used to access all necessary files
	property = my_node->getProperty();
	// using access to property parameters to perform desired actions
	if (property) {
		// getting a material from the corresponding property parameter
		material = property->getParameterPtr("some_material")->getValueMaterial();

		// getting the path to the mesh file from the corresponding property parameter
		const char *mesh_file_name = property->getParameterPtr("some_mesh")->getValueFile();

		// creating the object by using the mesh
		generated_obj = ObjectMeshStatic::create(mesh_file_name);

		// setting the object position relative to another node position
		generated_obj->setWorldPosition(my_node->getWorldPosition());
		generated_obj->translate(vec3(-1.0f, 0.0f, 0.0f));

		// getting the path to the sound file from the corresponding property parameter
		const char *sound_file_name = property->getParameterPtr("some_file")->getValueFile();

		// getting a node from the corresponding property parameter
		param_node = property->getParameterPtr("some_node")->getValueNode();

		// creating and playing a sound from the file
		sound = SoundSource::create(sound_file_name);
		sound->setMaxDistance(100.0f);
		sound->setLoop(1);
		sound->play();

		// reporting results to the console
		Log::message("Path to mesh file: %s\nPath to sound file: %s\nNode ID: %d\n", mesh_file_name, sound_file_name, param_node->getID());
	}
	return 1;
}

// start of the main loop
int AppWorldLogic::update() {
	// Write here code to be called before updating each render frame: specify all graphics-related functions you want to be called every frame while your application executes.

	float ifps = Game::getIFps();

	// changing the material
	material->setParameterFloat4("albedo_color", vec4(Game::getRandomFloat(0.0f, 1.0f), Game::getRandomFloat(0.0f, 1.0f), Game::getRandomFloat(0.0f, 1.0f), 1.0f));

	// rotate linked node
	param_node->setRotation(param_node->getRotation() * quat(0, 0, 30.0f * ifps));

	return 1;
}

int AppWorldLogic::postUpdate() {
	// The engine calls this function before rendering 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.
	// saving current material color (check it in the UnigineEditor to see that it was modified)
	material->save();
	return 1;
}

int AppWorldLogic::save(const Unigine::StreamPtr &stream) {
	// Write here code to be called when the world is saving its state: 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: restore custom user data to a file here.

	UNIGINE_UNUSED(stream);
	return 1;
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Unigine;

namespace UnigineApp
{
	class AppWorldLogic : WorldLogic
	{
		// World logic, it takes effect only when the world is loaded.
		// These methods are called right after corresponding world script's (UnigineScript) methods.
		Node my_node;						// node to which a property with links is assigned
		Property property;					// property with all necessary links
		Material material;					// linked material
		Node param_node;					// linked node
		SoundSource sound;					// sound source to be played 
		ObjectMeshStatic generated_obj;		// object to be generated using the mesh

		public AppWorldLogic()
		{
		}

		public override bool Init()
		{
			// getting the node to which a property with links to assets is assigned 
			my_node = World.GetNodeByName("my_object");

			// getting the property, that will be used to access all necessary files
			property = my_node.GetProperty();
			// using access to property parameters to perform desired actions
			if (property) {
				// getting a material from the corresponding property parameter
				material = property.GetParameterPtr("some_material").ValueMaterial;

				// getting the path to the mesh file from the corresponding property parameter
				String mesh_file_name = property.GetParameterPtr("some_mesh").ValueFile;

				// creating the object by using the mesh
				generated_obj = new ObjectMeshStatic(mesh_file_name);

				// setting the object position relative to another node position
				generated_obj.WorldPosition = my_node.WorldPosition;
				generated_obj.Translate(-1.0f, 0.0f, 0.0f);
				
				// getting the path to the sound file from the corresponding property parameter
				String sound_file_name = property.GetParameterPtr("some_file").ValueFile;

				// getting a node from the corresponding property parameter
				param_node = property.GetParameterPtr("some_node").ValueNode;

				// creating and playing a sound from the file
				sound = new SoundSource(sound_file_name);
				sound.MaxDistance = 100.0f;
				sound.Loop = 1;
				sound.Play();

				// reporting results to the console
				Log.Message("Path to mesh file: {0}\nPath to sound file: {1}\nNode ID: {2}\n", mesh_file_name, sound_file_name, param_node.ID);
			}
			return true;
		}

		// start of the main loop
		public override bool Update()
		{
			// Write here code to be called before updating each render frame: specify all graphics-related functions you want to be called every frame while your application executes.
			float ifps = Game.IFps;

			// changing the material
			 material.SetParameterFloat4("albedo_color", new vec4(Game.GetRandomFloat(0.0f, 1.0f), Game.GetRandomFloat(0.0f, 1.0f), Game.GetRandomFloat(0.0f, 1.0f), 1.0f));
			
			// rotate linked node
			param_node.SetRotation(param_node.GetRotation() * new quat(0, 0, 30.0f * ifps));

			return true;
		}

		public override bool PostUpdate()
		{
			// The engine calls this function before rendering each render frame: correct behavior after the state of the node has been updated.
			return true;
		}

		// end of the main loop

		public override bool Shutdown()
		{
			// Write here code to be called on world shutdown: delete resources that were created during world script execution to avoid memory leaks.
			// saving current material color (check it in the UnigineEditor to see that it was modified)
			material.Save();

			return true;
		}

		public override bool Save(Stream stream)
		{
			// Write here code to be called when the world is saving its state: save custom user data to a file.
			return true;
		}

		public override bool Restore(Stream stream)
		{
			// Write here code to be called when the world is restoring its state: restore custom user data to a file here.
			return true;
		}
	}
}