| 1 | /* |
| 2 | * Copyright (C) 2008 Patrik Gornicz, Gornicz_P (at) hotmail (dot) com. |
| 3 | * |
| 4 | * This program is free software: you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation, either version 3 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | |
| 18 | #include "Particle.h" |
| 19 | |
| 20 | #include <bear/Vector2.h> |
| 21 | using namespace bear; |
| 22 | |
| 23 | |
| 24 | /// ***** Constructors/Destructors ***** |
| 25 | |
| 26 | Particle::Particle(const Vector2& pos, bool canDie) |
| 27 | : Entity(pos), m_canDie(canDie) |
| 28 | { |
| 29 | |
| 30 | } |
| 31 | Particle::Particle(const Vector2& pos, float lifeTime) |
| 32 | : Entity(pos), m_lifeTime(lifeTime) |
| 33 | { |
| 34 | |
| 35 | } |
| 36 | Particle::~Particle() |
| 37 | { |
| 38 | |
| 39 | } |
| 40 | |
| 41 | /// ***** Public Class Methods ***** |
| 42 | |
| 43 | void Particle::update(float time_step) |
| 44 | { |
| 45 | if(m_isDead) |
| 46 | return; |
| 47 | |
| 48 | if (m_canDie) |
| 49 | { |
| 50 | m_lifeTime -= time_step; |
| 51 | m_isDead = m_lifeTime <= 0; |
| 52 | } |
| 53 | m_position += m_velocity * time_step; |
| 54 | } |