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#include "Soldier.h"
#include "GameFactoryDemo.h"

#include "Line3D.h"

using namespace GameFactory;

int Soldier::numSoldier = 0;
SceneNode* Soldier::referenceNode = NULL;

float Soldier::FireRange = 60;
float Soldier::FireHeight = 8;
int Soldier::EvaluateRange = 6;
int Soldier::WayPointQueueLength = 10;

Soldier* Soldier::selectedSoldier = NULL;

void Soldier::SelectSoldier(NxShape* shape){
	if (shape->getActor().readBodyFlag(NX_BF_KINEMATIC)){
		if (selectedSoldier!=NULL){
			selectedSoldier->mBody->setMaterialName("marine-body");
		}
		selectedSoldier = (Soldier*)shape->getActor().userData;
		if (selectedSoldier!=NULL)
			selectedSoldier->mBody->setMaterialName("Examples/Rockwall");
	}
}

bool Soldier::IsCovered(Vector3 from, Vector3 to){
	return ((from-to).length()>Soldier::FireRange) 
		|| SkeletalApplication::GetSingleton()->RayCast(from + Vector3(0,0,Soldier::FireHeight),
			to + Vector3(0,0,Soldier::FireHeight),NULL,NULL);
}

Soldier::Soldier(SceneManager *pSceneMgr, RenderWindow* renderWindow, NxScene* gScene)
{

	curBodyAnimation = NULL;
	curHeadAnimation = NULL;

	if (referenceNode==NULL){
		referenceNode = pSceneMgr->getRootSceneNode()->createChildSceneNode();
		OgreMax::OgreMaxScene* myScene = new OgreMax::OgreMaxScene();
		myScene->Load("marine.scene",renderWindow,OgreMax::OgreMaxScene::NO_OPTIONS,pSceneMgr,referenceNode);
		//referenceNode->setScale(0.5f,0.5f,0.5f);
		referenceNode->setVisible(false);

		// Report whether hardware skinning is enabled or not
		Technique* t = ((Entity*)((SceneNode*)referenceNode->getChild("Marine-body"))->getAttachedObject(0))->getSubEntity(0)->getMaterial()->getBestTechnique();
		Pass* p = t->getPass(0);
		if (p->hasVertexProgram() && p->getVertexProgram()->isSkeletalAnimationIncluded())
			SkeletalApplication::GetSingleton()->mDebugText = "Hardware skinning is enabled";
		else
			SkeletalApplication::GetSingleton()->mDebugText = "Software skinning is enabled";
	}
	mNameSuffix = StringConverter::toString(numSoldier);
	
	//mNode = pSceneMgr->getRootSceneNode()->createChildSceneNode();
	mNode = CloneSceneNode(referenceNode,(SceneNode*)referenceNode->getParent(),mNameSuffix);

	//mNode->showBoundingBox(true);
	//add bounding box to PhysX
	mNode->_updateBounds();
	mNode->_update(true,false);
	mNode->_updateBounds();
	//const AxisAlignedBox* pBoundingBox = &(mNode->_getWorldAABB());
	AxisAlignedBox pBoundingBox = AxisAlignedBox(Vector3(-0.5,-0.5,-0.5),Vector3(0.5,0.5,0.5));
	NxBodyDesc bodyDesc;
	bodyDesc.angularDamping	= 0.5f;
	NxVec3 initialVelocityNX = NxVec3(0,0,0);
	NxBoxShapeDesc boxDesc;
	Vector3 vv = (pBoundingBox.getMaximum()-pBoundingBox.getMinimum())/2;
	boxDesc.dimensions = Vector3ToNxVec3(vv*Vector3(0.5f,0.5f,1.8f));
	vv+= pBoundingBox.getMinimum();
	NxActorDesc actorDesc;
	actorDesc.shapes.pushBack(&boxDesc);
	actorDesc.body			= &bodyDesc;
	actorDesc.density		= 10.0f;
	actorDesc.globalPose.t  = Vector3ToNxVec3(vv);
	//gScene->createActor(actorDesc)->userData = (void*)size_t(size);
	actor = gScene->createActor(actorDesc);
	actor->raiseBodyFlag(NX_BF_KINEMATIC);
	actor->userData = (void*)this;
	//printf("Total: %d actors\n", gScene->getNbActors());

	mBody = (Entity*)((SceneNode*)mNode->getChild("Marine-body"+mNameSuffix))->getAttachedObject(0);
	mHead = (Entity*)((SceneNode*)mNode->getChild("head"+mNameSuffix))->getAttachedObject(0);
	mWeapon = pSceneMgr->getEntity("gun-01"+mNameSuffix);

	setAnimation("idle_stand");
	moving = false;
	rotating = false;

	numSoldier++;
}

Soldier::~Soldier(void)
{
}

void Soldier::setAnimation(String name){
	if (curBodyAnimation) curBodyAnimation->setEnabled(false);
	curBodyAnimation = mBody->getAnimationState(name);
	curBodyAnimation->setEnabled(true);
	curBodyAnimation->setLoop(true);
	
	if (curHeadAnimation) curHeadAnimation->setEnabled(false);
	curHeadAnimation = mHead->getAnimationState(name);
	curHeadAnimation->setEnabled(true);
	curHeadAnimation->setLoop(true);
}

bool Soldier::IsAt(Vector3 pos){
	return (mNode->getPosition()-pos).length()<0.2f;
}

void Soldier::ReachTo(Vector3 pos){
	if (!IsAt(pos)){
		if (!moving) setAnimation("run_forward");
		moving = true;
		movingTarget = pos;
	}else {
		if (moving) setAnimation("idle_stand");
		moving = false;
	}
}

void Soldier::RotateTo(Vector3 pos, Real elapsedTime){
	rotatingTarget = pos;

	pos.z=0.0f;
	Vector3 movingVector=(pos-mNode->getPosition()).normalisedCopy();//the displacement vector
	//Rotate(Vector3::UNIT_Y,Radian::Radian(Degree(45)));

	//movingVector.y = -movingVector.y;
	Real angle;
	if (movingVector.x==0){
		if (movingVector.y>0) angle = 3.14159/2;
		else angle = -3.14159/2;
	}else{
		angle = atanf(movingVector.y/movingVector.x);
		if (movingVector.x<0) angle+=3.14159;
	}
	angle+=3*3.14159/2;//to make this angle identical to character angle
	if (angle>3.14159*2) angle-=3.14159*2;//make sure it is not greater than 360 degrees

	Real curAngle;
	curAngle = mNode->getOrientation().getRoll().valueRadians();
	if (curAngle<0) curAngle+=3.14159*2;

	Real distPlus,distMinus,dist; 
	if (angle>curAngle){
		distPlus = abs(angle-curAngle);
		distMinus = abs(3.14159*2-angle+curAngle);
		if (distPlus<distMinus) dist = distPlus; else dist = -distMinus;
	}else{
		distMinus = abs(curAngle-angle);
		distPlus = abs(3.14159*2-curAngle+angle);
		if (distPlus<distMinus) dist = distPlus; else dist = -distMinus;
	}
	if (abs(dist)>3.14159/180*2){
		Rotate(Quaternion(Radian(curAngle+dist*elapsedTime*4.0f),Vector3::UNIT_Z));
		rotating = true;
	}
	else
		rotating = false;
}

void Soldier::ShotAt(Vector3 pos, Real elapsedTime){
	setAnimation("shot_bullet");//shot_rocket

	RotateTo(pos,elapsedTime);

	
	Vector3 hitPos, hitNorm,from;
	from = mNode->getPosition()+Vector3(0,0,7);
	if (SkeletalApplication::GetSingleton()->RayCast(from,pos,&hitPos,&hitNorm,false,true)){
		SkeletalApplication::GetSingleton()->smoke->AddSmoke(hitPos,hitNorm);
	}
}

void Soldier::MoveTo(Vector3 pos, Real elapsedTime){
	setAnimation("run_forward");
	pos.z=0.0f;
	Vector3 movingVector=(pos-mNode->getPosition()).normalisedCopy();//the displacement vector
	Translate(mNode->getPosition()+movingVector*1.0f*elapsedTime);
	//Rotate(Vector3::UNIT_Y,Radian::Radian(Degree(45)));

	//movingVector.y = -movingVector.y;
	Real angle;
	if (movingVector.x==0){
		if (movingVector.y>0) angle = 3.14159/2;
		else angle = -3.14159/2;
	}else{
		angle = atanf(movingVector.y/movingVector.x);
		if (movingVector.x<0) angle+=3.14159;
	}
	angle+=3*3.14159/2;//to make this angle identical to character angle
	if (angle>3.14159*2) angle-=3.14159*2;//make sure it is not greater than 360 degrees

	Real curAngle;
	curAngle = mNode->getOrientation().getRoll().valueRadians();
	if (curAngle<0) curAngle+=3.14159*2;

	Real distPlus,distMinus,dist; 
	if (angle>curAngle){
		distPlus = abs(angle-curAngle);
		distMinus = abs(3.14159*2-angle+curAngle);
		if (distPlus<distMinus) dist = distPlus; else dist = -distMinus;
	}else{
		distMinus = abs(curAngle-angle);
		distPlus = abs(3.14159*2-curAngle+angle);
		if (distPlus<distMinus) dist = distPlus; else dist = -distMinus;
	}
	if (abs(dist)>3.14159/180*2)
		Rotate(Quaternion(Radian(curAngle+dist*elapsedTime*4.0f),Vector3::UNIT_Z));
}

void Soldier::FrameMove(Real time){
	curBodyAnimation->addTime(time);
	curHeadAnimation->addTime(time);
	if (moving){
		MoveTo(movingTarget,time);
		ReachTo(movingTarget);
	}
	if (rotating){
		RotateTo(rotatingTarget,time);
	}
}
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