gamecodebook/Chapter04/Bullet.cpp

// ----------------------------------------------------------------
// From Game Programming in C++ by Sanjay Madhav
// Copyright (C) 2017 Sanjay Madhav. All rights reserved.
//
// Released under the BSD License
// See LICENSE.txt for full details.
// ----------------------------------------------------------------

#include "Bullet.h"
#include "SpriteComponent.h"
#include "MoveComponent.h"
#include "CircleComponent.h"
#include "Game.h"
#include "Enemy.h"

Bullet::Bullet(class Game* game)
:Actor(game)
{
	SpriteComponent* sc = new SpriteComponent(this);
	sc->SetTexture(game->GetTexture("Assets/Projectile.png"));
	
	MoveComponent* mc = new MoveComponent(this);
	mc->SetForwardSpeed(400.0f);
	
	mCircle = new CircleComponent(this);
	mCircle->SetRadius(5.0f);
	
	mLiveTime = 1.0f;
}

void Bullet::UpdateActor(float deltaTime)
{
	Actor::UpdateActor(deltaTime);
	
	// Check for collision vs enemies
	for (Enemy* e : GetGame()->GetEnemies())
	{
		if (Intersect(*mCircle, *(e->GetCircle())))
		{
			// We both die on collision
			e->SetState(EDead);
			SetState(EDead);
			break;
		}
	}
	
	mLiveTime -= deltaTime;
	if (mLiveTime <= 0.0f)
	{
		// Time limit hit, die
		SetState(EDead);
	}
}