sounds.c

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/*
 * static char *rcsid_sound_c =
 *   "$Id: sounds.c 11578 2009-02-23 22:02:27Z lalo $";
 */

/* Send bug reports to Raphael Quinet (quinet@montefiore.ulg.ac.be) */

#include <global.h>
#include <sproto.h>
#include <sounds.h>

#define MAX_SOUND_DISTANCE 10

void play_sound_player_only(player *pl, sint8 sound_type, object *emitter, int dir, const char *action) {
    SockList sl;
    int volume = 50;
    sstring name;
    object *source;

    if (pl->socket.sound&SND_MUTE || !(pl->socket.sound&SND_EFFECTS))
        return;
    if (pl->socket.sounds_this_tick >= MAX_SOUNDS_TICK)
        return;
    if (!emitter->map && !(emitter->env && emitter->env->map))
        return;

    source = emitter->map ? emitter : emitter->env;

    if ((RANDOM()%100) >= emitter->sound_chance)
        return;

    pl->socket.sounds_this_tick = 0;

    name = emitter->type == PLAYER ? emitter->race : emitter->name;
    if (!source)
        source = emitter;

    SockList_Init(&sl);
    SockList_AddString(&sl, "sound2 ");
    SockList_AddChar(&sl, (sint8)(source->x-pl->ob->x));
    SockList_AddChar(&sl, (sint8)(source->y-pl->ob->y));
    SockList_AddChar(&sl, dir);
    SockList_AddChar(&sl, volume);
    SockList_AddChar(&sl, sound_type);
    SockList_AddLen8Data(&sl, action, strlen(action));
    SockList_AddLen8Data(&sl, name, strlen(name));
    Send_With_Handling(&pl->socket, &sl);
    SockList_Term(&sl);
}

#define POW2(x) ((x)*(x))

void play_sound_map(sint8 sound_type, object *emitter, int dir, const char *action) {
    player *pl;
    object *source;

    if ((RANDOM()%100) >= emitter->sound_chance)
        return;

    if (!emitter->map && !(emitter->env && emitter->env->map))
        return;

    source = emitter->map ? emitter : emitter->env;

    for (pl = first_player; pl; pl = pl->next) {
        if (pl->ob->map == emitter->map) {
            int distance = isqrt(POW2(pl->ob->x-source->x)+POW2(pl->ob->y-source->y));

            if (distance <= MAX_SOUND_DISTANCE) {
                play_sound_player_only(pl, sound_type, emitter, dir, action);
            }
        }
    }
}

void send_background_music(player *pl, const char *music) {
    SockList sl;

    if (pl->socket.sound&SND_MUTE || !(pl->socket.sound&SND_MUSIC))
        return;

    SockList_Init(&sl);
    SockList_AddString(&sl, "music ");
    SockList_AddString(&sl, music == NULL ? "NONE" : music);
    Send_With_Handling(&pl->socket, &sl);
    SockList_Term(&sl);
}