第十章 OGRE中的粒子系统

#include <string>
#include "ExampleApplication.h"

class Example25FrameListener:public Ogre::FrameListener
{
public:

	Example25FrameListener(Ogre::SceneNode* node,RenderWindow* win,Ogre::Camera* cam,Ogre::Entity* ent):
	  _node(node),_cam(cam),_PolygonMode(Ogre::PolygonMode::PM_SOLID),_ent(ent),_WalkingSpeed(50.0f),_rotation(0.0f)
	{
		size_t windowHnd=0;
		std::stringstream windowHndStr;
		win->getCustomAttribute("WINDOW",&windowHnd);
		windowHndStr<<windowHnd;
		OIS::ParamList pl;
		pl.insert(std::make_pair(std::string("WINDOW"),windowHndStr.str()));
		_man=OIS::InputManager::createInputSystem(pl);
		_key=static_cast<OIS::Keyboard*>(_man->createInputObject(OIS::OISKeyboard,false));
		_mouse=static_cast<OIS::Mouse*>(_man->createInputObject(OIS::OISMouse,false));
		bRPressed=false;
		_aniState=_ent->getAnimationState("RunBase");
		_aniState->setLoop(false);
		_aniStateTop=_ent->getAnimationState("RunTop");
		_aniStateTop->setLoop(false);
	}
	~Example25FrameListener()
	{
		_man->destroyInputObject(_key);
		_man->destroyInputObject(_mouse);
		OIS::InputManager::destroyInputSystem(_man);
	}

	bool frameStarted(const Ogre::FrameEvent& evt)
	{
	
		bool walked=false;
		Ogre::Vector3 SinbadTranslate(0,0,0);
		_key->capture();

		
		if(_key->isKeyDown(OIS::KC_ESCAPE))
			return false;
		if(_key->isKeyDown(OIS::KC_UP))
		{
			SinbadTranslate+=Ogre::Vector3(0,0,-1);
			_rotation=3.14f;
			walked=true;
		}
		if(_key->isKeyDown(OIS::KC_DOWN))
		{
			SinbadTranslate+=Ogre::Vector3(0,0,1);
			_rotation=0.0f;
			walked=true;
		}
		if(_key->isKeyDown(OIS::KC_LEFT))
		{
			SinbadTranslate+=Ogre::Vector3(-1,0,0);
			_rotation=-1.57f;
			walked=true;
		}
		if(_key->isKeyDown(OIS::KC_RIGHT))
		{
			SinbadTranslate+=Ogre::Vector3(1,0,0);
			_rotation=1.57f;
			walked=true;
		}

		Ogre::Vector3 translate=Ogre::Vector3(0,0,0);
		Real Speed=1; 
		if(_key->isKeyDown(OIS::KC_LSHIFT))
		{
			Speed=10;
		}
		if(_key->isKeyDown(OIS::KC_W))
		{
			translate+=Ogre::Vector3(0,0,-10);
		}
		if(_key->isKeyDown(OIS::KC_S))
		{
			translate+=Ogre::Vector3(0,0,10);
		}
		if(_key->isKeyDown(OIS::KC_A))
		{
			translate+=Ogre::Vector3(-10,0,0);
		}
		if(_key->isKeyDown(OIS::KC_D))
		{
			translate+=Ogre::Vector3(10,0,0);
		}
		if(_key->isKeyDown(OIS::KC_LCONTROL) && _key->isKeyDown(OIS::KC_C))
			translate+=Ogre::Vector3(0,10,0);		
		if(_key->isKeyDown(OIS::KC_R) && !bRPressed)
		{
			bRPressed=true;
			if(_PolygonMode==PM_SOLID)
				_PolygonMode=Ogre::PolygonMode::PM_WIREFRAME;
			else if(_PolygonMode==PM_WIREFRAME)
				_PolygonMode=Ogre::PolygonMode::PM_POINTS;
			else if(_PolygonMode==PM_POINTS)
				_PolygonMode=Ogre::PolygonMode::PM_SOLID;
		}
		if(bRPressed && !_key->isKeyDown(OIS::KC_R))
			bRPressed=false;
		_mouse->capture();
		float rotX=_mouse->getMouseState().X.rel*evt.timeSinceLastFrame*-1;
		float rotY=_mouse->getMouseState().Y.rel*evt.timeSinceLastFrame*-1;
		_cam->yaw(Ogre::Radian(rotX));
		_cam->pitch(Ogre::Radian(rotY));
		_cam->moveRelative(translate*evt.timeSinceLastFrame*Speed);
		_cam->setPolygonMode(_PolygonMode);
		
		if(walked)
		{
			_aniState->setEnabled(true);
			_aniStateTop->setEnabled(true);
			if(_aniState->hasEnded())
				_aniState->setTimePosition(0.0f);
			if(_aniStateTop->hasEnded())
				_aniStateTop->setTimePosition(0.0f);
		}
		else
		{
			_aniState->setTimePosition(0.0f);
			_aniState->setEnabled(false);
			_aniStateTop->setTimePosition(0.0f);
			_aniStateTop->setEnabled(false);
		}


		_aniState->addTime(evt.timeSinceLastFrame);
		_aniStateTop->addTime(evt.timeSinceLastFrame);

		_node->translate(SinbadTranslate*evt.timeSinceLastFrame*_WalkingSpeed);
		_node->resetOrientation();
		_node->yaw(Ogre::Radian(_rotation));



		return true;

	}
private:
	Ogre::SceneNode* _node;
	OIS::InputManager* _man;
	OIS::Keyboard* _key;
	Ogre::Camera* _cam;
	OIS::Mouse* _mouse;
	Ogre::PolygonMode _PolygonMode;
	bool bRPressed;
	Ogre::Entity* _ent;
	Ogre::AnimationState* _aniState;
	Ogre::AnimationState* _aniStateTop;

	float _WalkingSpeed;
	float _rotation;

};

class Example1:public ExampleApplication
{
public:
	Example1()
	{
		FrameListener=NULL;
	}
	~Example1()
	{
		if(FrameListener)
		{
			delete FrameListener;
		}
	}
	void createScene()
	{
		Ogre::Plane plane(Vector3::UNIT_Y,-10);
		Ogre::MeshManager::getSingleton().createPlane("planemesh",ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,plane,1500,1500,200,200,true,1,5,5,Vector3::UNIT_Z);
		Ogre::Entity* LightPlane=mSceneMgr->createEntity("LightPlane","planemesh");
		mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(LightPlane);
		LightPlane->setMaterialName("Examples/BeachStones");

		Ogre::Light* DirectionalLight=mSceneMgr->createLight("MyDirectionalLight");
		DirectionalLight->setType(Ogre::Light::LT_DIRECTIONAL);
		DirectionalLight->setDirection(Ogre::Vector3(1,-1,0));
		
		Ogre::SceneNode* SubNodeRoot=mSceneMgr->getRootSceneNode()->createChildSceneNode("SubNodeRoot");

		_SinbadEnt=mSceneMgr->createEntity("Sinbad","Sinbad.mesh");
		
		_SinbadNode=SubNodeRoot->createChildSceneNode("SinbadNode");
		_SinbadNode->setPosition(Ogre::Vector3(0.0f,4.0f,0.0f));
		_SinbadNode->setScale(3.0f,3.0f,3.0f);
		_SinbadNode->attachObject(_SinbadEnt);
		//1 begin
		/*
		Ogre::ParticleSystem* partSystem=mSceneMgr->createParticleSystem("Smoke","Examples/Smoke");
				_SinbadNode->attachObject(partSystem);*/
		
		//1 end
		//2|1 begin
		/*Ogre::ParticleSystem* partSystem=mSceneMgr->createParticleSystem("Smoke","MySmoke1");
		_SinbadNode->attachObject(partSystem);
		*/
		
		//2|1 end
		//15|2 begin
		Ogre::ParticleSystem* partSystem1=mSceneMgr->createParticleSystem("Firework1","Firework");
		Ogre::ParticleSystem* partSystem2=mSceneMgr->createParticleSystem("Firework2","Firework");
		Ogre::ParticleSystem* partSystem3=mSceneMgr->createParticleSystem("Firework3","Firework");
		Ogre::ParticleSystem* partSystem4=mSceneMgr->createParticleSystem("Firework4","Firework");
		Ogre::ParticleSystem* partSystem5=mSceneMgr->createParticleSystem("Firework5","Firework");
		Ogre::SceneNode* node1=mSceneMgr->getRootSceneNode()->createChildSceneNode(Ogre::Vector3(0,10,0));
		Ogre::SceneNode* node2=mSceneMgr->getRootSceneNode()->createChildSceneNode(Ogre::Vector3(10,11,0));
		Ogre::SceneNode* node3=mSceneMgr->getRootSceneNode()->createChildSceneNode(Ogre::Vector3(20,9,0));
		Ogre::SceneNode* node4=mSceneMgr->getRootSceneNode()->createChildSceneNode(Ogre::Vector3(-10,11,0));
		Ogre::SceneNode* node5=mSceneMgr->getRootSceneNode()->createChildSceneNode(Ogre::Vector3(-20,19,0));
		node1->attachObject(partSystem1);
		node2->attachObject(partSystem2);
		node3->attachObject(partSystem3);
		node4->attachObject(partSystem4);
		node5->attachObject(partSystem5);


		//15|2 end
		mSceneMgr->setShadowTechnique(Ogre::SHADOWTYPE_STENCIL_ADDITIVE);

		Ogre::Entity* sword1=mSceneMgr->createEntity("Sword1","Sword.mesh");
		Ogre::Entity* sword2=mSceneMgr->createEntity("Sword2","Sword.mesh");
		_SinbadEnt->attachObjectToBone("Handle.L",sword1);
		_SinbadEnt->attachObjectToBone("Handle.R",sword2);



	}

	void createCamera()
	{
		mCamera=mSceneMgr->createCamera("MyCamera1");
		mCamera->setPosition(Ogre::Vector3(0,100,200));
		mCamera->lookAt(0,0,0);
		mCamera->setNearClipDistance(5);

	}


	void createFrameListener()
	{

		FrameListener=new Example25FrameListener(_SinbadNode,mWindow,mCamera,_SinbadEnt);
		mRoot->addFrameListener(FrameListener);
	}

private:
	Ogre::SceneNode* _SinbadNode;
	Ogre::FrameListener* FrameListener;
	Ogre::Entity* _SinbadEnt;
};


int main()
{
	Example1 app;
	app.go();
	return 0;
}

Seamanj_Ogre3DBeginnersGuide.particle 文件

particle_system MySmoke1
{
	material Examples/Smoke
	particle_width 10
	particle_height 10
	quota 500//到最大粒子数时,发射器将不再发射粒子
	billboard_type point
	//0.1 begin
	//emitter Point
	//{
		emission_rate 3
		direction 1 0 0
		velocity 20
		//3 begin
		//angle 30
		//time_to_live 10
		//The parameter time_to_live sets the lifetime of each particle.The default is 5.
		//colour 1 0 0 1
		//3 end                                                        
		//4|3 begin
		//angle 30
		//time_to_live_min 1
		//time_to_live_max 10
		//colour_range_start 1 0 0
		//colour_range_end 0 0 1
		//4|3 end
		//5|4 begin
		//duration 1//持续发射时间
		//repeat_delay 1//离下一次发射的间隔时间
		//5|4 end
	//}
	//0.1 end
	//6|0.1 begin
	/*emitter Point
	{
		emission_rate 30
		direction 1 0 0
		velocity 20
		time_to_live 100
		
	}*/
	//6|0.1 end
	//6.1 begin
	/*
	affector Scaler
	{
		rate 5//粒子每秒变大5倍
	}
	*/
	
	//6.1 end
	//7|6.1 begin
	/*affector ColourFader//注意affector的名字不能随便变
	{
		red -0.25
		green -0.25
		blue -0.25
	}*/
	//7|6.1 end

	//8|7 begin
	/*affector ColourFader
	{
		green -0.25
		blue -0.25
	}*/
	//8|7 end

	//9|all begin
	/*emitter Point
	{
		emission_rate 30
		direction 1 0 0
		velocity 20
		time_to_live 4
	}*/
	//9.1 begin
	/*affector ColourFader2
	{
		red1 -1
		green1 -1
		blue1 -1
		state_change 2
		red2 +1
		green2 +1
		blue2 +1
	}*/
	//9.1 end
	
	//9|allend
	//10|9.1 begin
	affector ColourInterpolator
	{
		time0 0//timeX and ColorX,where X must between 0 and 5
		colour0 1 1 1
		time1 0.25
		colour1 1 0 0
		time2 0.5
		colour2 0 1 0
		time3 0.75
		colour3 0 0 1
		time4 1
		colour4 1 1 1 
		
	}
	//10|9.1 end
	
	
	//11|10 begin
	/*affector DirectionRandomiser
	{
		randomness 100
		scope 1//how many of our particles should be affected each time the affector is applied.
			//1.0 stands for 100 percent and 0 for 0 percent.
		keep_velocity true
	}*/
	//11|10 end
	//12|all begin   平面反弹
	/*emitter Point
	{
		emission_rate 30
		direction 0 1 0
		velocity 20
		time_to_live 4
		angle 30
	}
	affector DeflectorPlane
	{
		plane_point 0 20 0
		plane_normal 0 -1 0
		bounce 1.0
	}*/
	//12|all end
	//13_10|12 begin      盒子发射器
	/*emitter Box
	{
		height 50
		width 50
		depth 50
		emission_rate 10
		direction 0 1 0
		velocity 20
	}*/
	//13_10|12 end
	//14_10|13 begin	环发射器
	emitter Ring
	{
	//Ring的椭圆长宽的最大值
	height 50
	width 50
	//内部部分不发射粒子区域百分比
	inner_height 0.9
	inner_width 0.9
	emission_rate 10
	direction 0 1 0
	velocity 20
	}
	//14_10|13 end
}

//15 begin
particle_system Firework
{
	material Examples/Smoke
	particle_width 10
	particle_height 10
	quota 500
	billboard_type point
	emitter Point
	{
		emission_rate 100
		direction 0 0 -1
		velocity 50
		angle 30
		duration 0.1
		repeat_delay 1
		colour_range_start 0 0 0
		colour_range_end 1 1 1
	}
}
//15 end
	

此时这本书顺利完成,最后放点烟花庆祝一下