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/******************************************************************************
* Warmux is a convivial mass murder game.
* Copyright (C) 2001-2011 Warmux Team.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
******************************************************************************
* Particle Engine
*****************************************************************************/
#include "particles/ill_bubble.h"
#include "particles/explosion_smoke.h"
#include "game/game_time.h"
#include "graphic/sprite.h"
#include "network/randomsync.h"
// Vibration period of the bubble
static const uint vib_period = 250;
static const Double MAX_SCALE = ONE;
static const Double MIN_SCALE = 0.25f;
IllBubble::IllBubble() : ExplosionSmoke(20)
{
// delete the sprite of the ExplosionSmoke
delete image;
image = ParticleEngine::GetSprite(ILL_BUBBLE_spr);
SetAirResistFactor( GetAirResistFactor() * THREE );
MSG_DEBUG("random.get", "IllBubble::IllBubble()");
vib_phi = RandomSync().GetUint(0, vib_period);
image->Scale(MIN_SCALE, MIN_SCALE);
}
void IllBubble::Refresh()
{
ExplosionSmoke::Refresh();
uint time = (GameTime::GetInstance()->Read() + vib_phi) % vib_period;
Double scale_x, scale_y;
image->GetScaleFactors(scale_x, scale_y);
Double scale_factor = 1.2;
Double dangle = time*TWO_PI / vib_period;
scale_x *= scale_factor * sin(dangle);
scale_y *= scale_factor * cos(dangle);
scale_x = std::max(MIN_SCALE, std::min(scale_x, MAX_SCALE));
scale_y = std::max(MIN_SCALE, std::min(scale_y, MAX_SCALE));
// scale_x and scale_y should be now >= 0.25f so no flipping to do.
image->Scale(scale_x, scale_y);
}
void IllBubble::Draw()
{
if (m_time_left_to_live > m_initial_time_to_live - 3)
image->SetAlpha( (Double)(m_initial_time_to_live - m_time_left_to_live) / THREE );
else
image->SetAlpha(ONE);
if (m_time_left_to_live > 0)
image->Draw(GetPosition() - image->GetSize() / 2);
}
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