EnemyBullet.cpp

//=====================================
//
//エネミーバレット処理[EnemyBullet.cpp]
//Author:GP12A332 21 立花雄太
//
//=====================================
#include "EnemyBullet.h"
#include "Framework\ResourceManager.h"
#include "camera.h"
#include "GameParticleManager.h"
#include "EnemyBulletTrail.h"

/**************************************
マクロ定義
***************************************/
#define ENEMYBULLET_INIT_SPEED	(5.5f)

/**************************************
コンストラクタ
***************************************/
EnemyBullet::EnemyBullet()
{
	ResourceManager::Instance()->GetPolygon(RESOURCE_ENEMYBULLET_TAG, polygon);

	active = false;
}

/**************************************
デストラクタ
***************************************/
EnemyBullet::~EnemyBullet()
{
	polygon = NULL;
}

/**************************************
初期化処理
***************************************/
void EnemyBullet::Init(D3DXVECTOR3 setPos, D3DXVECTOR3 target, int reachFrame, const D3DXVECTOR3& scale)
{
	active = true;
	targetPos = target;
	cntFrame = reachFrame;

	transform.pos = setPos;
	transform.scale = scale;

	velocity.x = RandomRangef(-1.0f, 1.0f);
	velocity.y = RandomRangef(-1.0f, 1.0f);
	velocity.z = 1.0f;
	D3DXVec3Normalize(&velocity, &velocity);
	velocity *= ENEMYBULLET_INIT_SPEED;

	BaseEmitter* emitter = GameParticleManager::Instance()->SetEnemyBulletTrail(&transform.pos);
	if (emitter != NULL)
		trail = static_cast<EnemyBulletTrailEmitter*>(emitter);
}

/**************************************
終了処理
***************************************/
void EnemyBullet::Uninit()
{
	active = false;
	if (trail != NULL)
	{
		trail->active = false;
		trail = NULL;
	}
}

/**************************************
更新処理
***************************************/
void EnemyBullet::Update()
{
	if (!active)
		return;

	transform.Rotate(0.0f, 0.0f, 5.0f);

	D3DXVECTOR3 diff = targetPos - transform.pos;
	D3DXVECTOR3 acceleration = (diff - velocity * (float)cntFrame) * 2.0f / (float)(cntFrame * cntFrame);

	cntFrame--;

	velocity += acceleration;

	transform.pos += velocity;

	if (trail != NULL)
		trail->transform.pos = transform.pos;

	if (cntFrame < 0)
		Uninit();
}

/**************************************
描画処理
***************************************/
void EnemyBullet::Draw()
{
	LPDIRECT3DDEVICE9 pDevice = GetDevice();

	D3DXMATRIX mtxWorld, mtxInvView;

	//ワールド変換
	transform.SetWorldInvView();

	//描画
	polygon->Draw();
}