#include "playsound.h"
#include "debug.h"

#ifndef NOSOUND
Mix_Chunk * sounds[NUM_SOUNDS];
#endif

int mute, use_sound;
int old_sound[4] = {-1, -1, -1, -1};

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)
    {
      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);
	}


	
	Mix_SetPanning(chan, left, (255 - dist) - left);
      }
    }
#endif
}