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Fixed last bad artifacts of Sam & Max carnival music.

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Hopefully this fix doesn't break anything else....

svn-id: r5948
This commit is contained in:
Jamieson Christian 2002-12-14 02:51:37 +00:00
parent 7f46dc6690
commit e2cb8112e5
1 changed files with 34 additions and 17 deletions
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51
scumm/imuse.cpp
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@ -813,6 +813,19 @@ bool IMuseInternal::start_sound(int sound)
Player *player;
void *mdhd;
// Do not start a sound if it is already set to
// start on an ImTrigger event. This fixes carnival
// music problems where a sound has been set to trigger
// at the right time, but then is started up immediately
// anyway, only to be restarted later when the trigger
// occurs.
int i;
ImTrigger *trigger = _snm_triggers;
for (i = ARRAYSIZE (_snm_triggers); i; --i, ++trigger) {
if (trigger->sound && trigger->id && trigger->command[0] == 8 && trigger->command[1] == sound)
return false;
}
mdhd = findTag(sound, MDHD_TAG, 0);
if (!mdhd) {
mdhd = findTag(sound, MDPG_TAG, 0);
@ -829,7 +842,6 @@ bool IMuseInternal::start_sound(int sound)
// race conditions that were observed in MI2. Reference
// Bug #590511 and Patch #607175 (which was reversed to fix
// an FOA regression: Bug #622606).
int i;
for (i = ARRAYSIZE(_players), player = _players; i != 0; i--, player++) {
if (player->_active && player->_id == sound)
break;
@ -1452,7 +1464,7 @@ int32 IMuseInternal::do_command(int a, int b, int c, int d, int e, int f, int g,
}
return -1;
case 15:
// Sam & Max: Unconditional Jump?
// Sam & Max: Set hook for a "maybe" jump
for (i = ARRAYSIZE(_players), player = _players; i != 0; i--, player++) {
if (player->_active && player->_id == (uint16)b) {
player->_hook._jump = d;
@ -1604,11 +1616,11 @@ int32 IMuseInternal::ImSetTrigger (int sound, int id, int a, int b, int c, int d
// represented by MIDI SysEx block 00 xx (F7)
// where "xx" is the marker ID.
uint16 oldest_trigger = 0;
int oldest_index = -1;
ImTrigger *oldest_ptr = NULL;
int i;
for (i = 0; i < 16; ++i) {
ImTrigger *trig = &_snm_triggers [i];
ImTrigger *trig = _snm_triggers;
for (i = ARRAYSIZE (_snm_triggers); i; --i, ++trig) {
if (!trig->id)
break;
if (trig->id == id && trig->sound == sound)
@ -1620,26 +1632,31 @@ int32 IMuseInternal::ImSetTrigger (int sound, int id, int a, int b, int c, int d
else
diff = 0x10000 - trig->expire + _snm_trigger_index;
if (oldest_index < 0 || oldest_trigger < diff) {
oldest_index = i;
if (!oldest_ptr || oldest_trigger < diff) {
oldest_ptr = trig;
oldest_trigger = diff;
}
}
// If we didn't find a trigger, see if we can expire one.
if (i >= 16) {
if (oldest_index < 0)
if (!i) {
if (!oldest_ptr)
return -1;
i = oldest_index;
trig = oldest_ptr;
}
_snm_triggers [i].id = id;
_snm_triggers [i].sound = sound;
_snm_triggers [i].expire = (++_snm_trigger_index & 0xFFFF);
_snm_triggers [i].command [0] = a;
_snm_triggers [i].command [1] = b;
_snm_triggers [i].command [2] = c;
_snm_triggers [i].command [3] = d;
trig->id = id;
trig->sound = sound;
trig->expire = (++_snm_trigger_index & 0xFFFF);
trig->command [0] = a;
trig->command [1] = b;
trig->command [2] = c;
trig->command [3] = d;
// If the command is to start a sound, stop that sound if it's already playing.
// This fixes some carnival music problems.
if (trig->command [0] == 8 && get_sound_status (trig->command [1]))
stop_sound (trig->command [1]);
return 0;
}