starfighter/src/debris.cpp

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/*
Copyright (C) 2003 Parallel Realities
Copyright (C) 2011, 2012 Guus Sliepen
Copyright (C) 2015 Julian Marchant
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 3
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
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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
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along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Starfighter.h"
void addDebris(int x, int y, int amount)
{
if ((rand() % 2) == 0)
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audio_playSound(SFX_DEBRIS, x);
else
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audio_playSound(SFX_DEBRIS2, x);
object *debris;
amount = rrand(3, rand() % amount);
limitInt(&amount, 3, 8);
for (int i = 0 ; i < amount ; i++)
{
debris = new object;
debris->next = NULL;
debris->x = x;
debris->y = y;
debris->thinktime = rrand(60, 180);
debris->dx = rrand(-500, 500);
debris->dy = rrand(-500, 500);
if (debris->dx != 0)
debris->dx /= 100;
if (debris->dy != 0)
debris->dy /= 100;
engine.debrisTail->next = debris;
engine.debrisTail = debris;
}
}
void doDebris()
{
object *prevDebris = engine.debrisHead;
object *debris = engine.debrisHead;
engine.debrisTail = engine.debrisHead;
while (debris->next != NULL)
{
debris = debris->next;
if (debris->thinktime > 0)
{
debris->thinktime--;
debris->x += engine.ssx + engine.smx;
debris->y += engine.ssy + engine.smy;
debris->x += debris->dx;
debris->y += debris->dy;
addExplosion(debris->x + rrand(-10, 10), debris->y + rrand(-10, 10), E_BIG_EXPLOSION);
}
if (debris->thinktime < 1)
{
prevDebris->next = debris->next;
delete debris;
debris = prevDebris;
}
else
{
prevDebris = debris;
engine.debrisTail = debris;
}
}
}