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路径: \\game3dprogramming\materials\DarkPuzzle\GameEngine\Light.cpp

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历史版本

#pragma once

//#include "DXUT.h"
#include "DarkPuzzle.h"
#include "Light.h"
#include "GameEngine.h"

 
namespace DarkBattle{
	list<Light*> lightPool;
	list<Light*>::iterator currentIterator = lightPool.begin();
	const char* Light::lightNames[] = {"LampPost","LightEye"};
	int Light::identifyLightType(const char* name){
		for (int i=0;i<LIGHT_TYPES;i++){
			if (strcmp(name, lightNames[i])==0)
				return i;
		}
		return LIGHT_NOTLIGHT;
	}
	D3DXMATRIX Light::getLightEyeTransform(){
		D3DXMATRIX ret = pInstance->GetTransformMatrix();
		D3DXMATRIX trans;
		D3DXMatrixTranslation(&trans,0,0,15.0f);
		return ret*trans;
	}
	D3DXMATRIX Light::getLampPostTransform(){
		D3DXMATRIX ret = pInstance->GetTransformMatrix();
		D3DXMATRIX trans;
		D3DXMatrixTranslation(&trans,0,0,11.0f);
		return ret*trans;
	}
	Light* Light::CreateLight(const Game3DInstance* pInstance, int type){
		assert(type<LIGHT_TYPES);
		assert(type>=0);
		return new Light(pInstance,lightNames[type]);
	}
	Light::Light(const Game3DInstance* pInstance, const char* name){
		//this->currentIterator = NULL;
		this->pInstance = pInstance;
		assert(this->pInstance!=NULL);
		this->getTransform = NULL;
		this->lightFallOff = 0.5f;
		this->pLightRange = &GameEngine::PointLightRange;
		this->lightColor[0] = this->lightColor[1] = this->lightColor[2] = 1;
		this->isSpotLight = false;

		//parse the name, init the corresponding light parameters
		int lightType = identifyLightType(name);
		assert(lightType!=LIGHT_NOTLIGHT);//only valid light is added here
		if (lightType==LightTypesConst::LightEye){
			this->isSpotLight = true;
			this->pLightRange = &GameEngine::SpotLightRange;
			this->lightColor[1] = this->lightColor[2] = 0; //red light
			this->lightFallOff = 0.2f;
			this->getTransform = &Light::getLightEyeTransform;
		}else if (lightType==LightTypesConst::LamPost){
			this->lightColor[0] = this->lightColor[1] = 0; //blue light
			this->getTransform = &Light::getLampPostTransform;
		}
		assert(this->getTransform!=NULL);
		//add the light to the lightPool
		lightPool.push_back(this);
	}
	D3DXVECTOR3 Light::GetLightDirection(){
		D3DXMATRIX matRot;
		D3DXMatrixRotationZ(&matRot, pInstance->GetAngle());
		D3DXVECTOR3 ret = D3DXVECTOR3(0,-1,-1);
		D3DXVec3TransformCoord(&ret,&ret,&matRot);
		return ret;
	}
	Light* Light::IterationBegin(){
		//assert(currentIterator==NULL);
		currentIterator = lightPool.begin();
		assert(currentIterator!=lightPool.end());//there must be at least one light
		return *currentIterator;
	}
	bool Light::IterationEnd(){
		if (currentIterator == lightPool.end()){
			currentIterator = lightPool.begin();
			return true;			
		}else return false;
	}
	Light* Light::IterationNextElement(){
		currentIterator++;
		if (currentIterator==lightPool.end()){
			return NULL;
		}
		Light* ret = *currentIterator;
		assert(ret!=NULL);
		return ret;
	}
	float Light::GetLightRadius(){
		return GameEngine::SpotLightRadius;
	}
};

Light.cpp

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