106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/*
|
|
playsound.c
|
|
|
|
Copyright (c) 2002-2009
|
|
http://www.tuxpaint.org/
|
|
|
|
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
|
|
(See COPYING.txt)
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#include "playsound.h"
|
|
#include "debug.h"
|
|
|
|
#ifndef NOSOUND
|
|
Mix_Chunk *sounds[NUM_SOUNDS];
|
|
#endif
|
|
|
|
int mute;
|
|
int use_sound = 1;
|
|
static int old_sound[4] = { -1, -1, -1, -1 };
|
|
|
|
/**
|
|
* Play a sound.
|
|
*
|
|
* @param screen Screen surface (for dealing with panning & volume)
|
|
* @param chan Channel to play on (-1 for first free unused channel)
|
|
* @param s Which sound to play (integer index of `sounds[]` array)
|
|
* @param override 1 to override an already-playing sound, 0 otherwise
|
|
* @param x X coordinate within the screen surface, for left/right panning
|
|
* effect; or SNDPOS_LEFT, SNDPOS_CENTER, or SNDPOS_RIGHT for
|
|
* far left, center, or far right panning, respectively.
|
|
* @param y Y coordinate within the screen surface, for volume control
|
|
* (low values, near the top of the window, are quieter), or
|
|
* SNDDIST_NEAR for full volume
|
|
*/
|
|
void playsound(SDL_Surface * screen, int chan, int s, int override, int x, int y)
|
|
{
|
|
#ifndef NOSOUND
|
|
int left, dist;
|
|
|
|
if (!mute && use_sound && s != SND_NONE)
|
|
{
|
|
#ifdef DEBUG
|
|
printf("playsound #%d in channel %d, pos (%d,%d), %soverride, ptr=%p\n", s, chan, x, y, override ? "" : "no ", sounds[s]);
|
|
fflush(stdout);
|
|
#endif
|
|
if (override || !Mix_Playing(chan))
|
|
{
|
|
Mix_PlayChannel(chan, sounds[s], 0);
|
|
|
|
old_sound[chan] = s;
|
|
}
|
|
|
|
if (old_sound[chan] == s)
|
|
{
|
|
if (y == SNDDIST_NEAR)
|
|
dist = 0;
|
|
else
|
|
{
|
|
if (y < 0)
|
|
y = 0;
|
|
else if (y >= screen->h - 1)
|
|
y = screen->h - 1;
|
|
|
|
dist = (255 * ((screen->h - 1) - y)) / (screen->h - 1);
|
|
}
|
|
|
|
if (x == SNDPOS_LEFT)
|
|
left = 255 - dist;
|
|
else if (x == SNDPOS_CENTER)
|
|
left = (255 - dist) / 2;
|
|
else if (x == SNDPOS_RIGHT)
|
|
left = 0;
|
|
else
|
|
{
|
|
if (x < 0)
|
|
x = 0;
|
|
else if (x >= screen->w)
|
|
x = screen->w - 1;
|
|
|
|
left = ((255 - dist) * ((screen->w - 1) - x)) / (screen->w - 1);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
printf("Panning of sound #%d in channel %d, left=%d, right=%d\n", s, chan, left, (255-dist)-left);
|
|
fflush(stdout);
|
|
#endif
|
|
Mix_SetPanning(chan, left, (255 - dist) - left);
|
|
}
|
|
}
|
|
#endif
|
|
}
|