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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 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
* 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "m4/adv_r/adv_trigger.h"
#include "m4/core/errors.h"
#include "m4/vars.h"
#include "m4/m4.h"
namespace M4 {
#define _GT(X) _G(triggers)._##X
int32 kernel_trigger_create(int32 trigger_num) {
if (trigger_num < 0)
return (trigger_num);
if (trigger_num > 0xffff) { // If room changed, this is an invalid trigger
error_show(FL, 'BADT', "bad trigger. %d > 0xffff", trigger_num);
}
int32 new_trigger = trigger_num + (_G(game).room_id << 16) + (_G(kernel).trigger_mode << 28);
return new_trigger;
}
bool kernel_trigger_dispatch_now(int32 trigger_num) {
if (g_engine->getGameType() == GType_Riddle)
return kernel_trigger_dispatchx(trigger_num);
return kernel_trigger_dispatchx(kernel_trigger_create(trigger_num));
}
void cisco_dispatch_triggers() {
for (int i = 0; i < _GT(q_end); ++i) {
kernel_trigger_dispatchx(_GT(sound_trigger_q)[i]);
}
_GT(q_end) = 0;
}
void cisco_clear_triggers() {
_GT(q_end) = _GT(q_start) = 0;
}
bool kernel_trigger_dispatchx(int32 trigger_num) {
if (_G(between_rooms))
return true;
KernelTriggerType old_trigger_mode = _G(kernel).trigger_mode;
int32 old_trigger = _G(kernel).trigger;
bool result = false;
if (trigger_num < 0)
return false;
if (((trigger_num >> 16) & 0xfff) != _G(game).room_id) { // if room changed, this is an invalid trigger
term_message("orphan scene trigger:mode: %d, scene: %d, trigger: %d",
trigger_num >> 28, (trigger_num >> 16) & 0xffff, trigger_num & 0xffff);
return false;
}
_G(kernel).trigger = trigger_num & 0xffff; // If no command in Q, must be here because of code
switch (trigger_num >> 28) {
case KT_PREPARSE:
if (_G(kernel).trigger >= 32000)
break;
_G(kernel).trigger_mode = KT_PREPARSE;
g_engine->room_pre_parser();
result = true;
break;
case KT_PARSE:
if (_G(kernel).trigger >= 32000)
break;
_G(kernel).trigger_mode = KT_PARSE;
_G(player).command_ready = true;
g_engine->room_parser();
if (_G(player).command_ready) {
g_engine->global_parser();
}
result = true;
break;
case KT_DAEMON:
g_engine->game_daemon_code();
result = true;
break;
default:
term_message("orphan mode trigger: mode: %d, scene: %d, trigger: %d",
trigger_num >> 28, (trigger_num >> 16) & 0xffff, trigger_num & 0xffff);
result = false;
break;
}
_G(kernel).trigger_mode = old_trigger_mode;
_G(kernel).trigger = old_trigger;
return result;
}
static void timer_callback(frac16 myMessage, struct machine *sender) {
kernel_trigger_dispatchx(myMessage);
}
void kernel_timing_trigger(int32 ticks, int16 trigger, const char *name) {
if (ticks <= 0) {
// Trigger immediately
kernel_trigger_dispatchx(kernel_trigger_create(trigger));
return;
}
_G(globals)[GLB_TEMP_1] = ticks << 16;
_G(globals)[GLB_TEMP_2] = kernel_trigger_create(trigger);
if (name) {
Common::String machName = Common::String::format("timer - %s", name);
TriggerMachineByHash(2, nullptr, -1, -1, timer_callback, false, machName.c_str());
} else {
TriggerMachineByHash(2, nullptr, -1, -1, timer_callback, false, "timer trigger");
}
}
void kernel_timing_trigger(int32 ticks, int16 trigger,
KernelTriggerType preMode, KernelTriggerType postMode) {
_G(kernel).trigger_mode = preMode;
kernel_timing_trigger(ticks, trigger, nullptr);
_G(kernel).trigger_mode = postMode;
}
void kernel_timing_trigger_daemon(int32 ticks, int16 trigger) {
KernelTriggerType oldMode = _G(kernel).trigger_mode;
_G(kernel).trigger_mode = KT_DAEMON;
kernel_timing_trigger(ticks, trigger, nullptr);
_G(kernel).trigger_mode = oldMode;
}
void kernel_service_timing_trigger_q() {
// Dispatch pending timing triggers
int32 iter = 0;
int32 now = timer_read_60();
while (iter < _GT(time_q_end) && _GT(time_q)[iter] <= now)
{
kernel_trigger_dispatchx(_GT(time_trigger_q)[iter]);
++iter;
}
if (!iter)
return;
// Remove dispatched triggers from the q
int32 total = iter;
int32 dispatched = iter;
iter = 0;
while (dispatched < _GT(time_q_end)) {
_GT(time_q)[iter] = _GT(time_q)[dispatched];
_GT(time_trigger_q)[iter] = _GT(time_trigger_q)[dispatched];
++iter;
++dispatched;
}
_GT(time_q_end) -= total;
}
} // End of namespace M4
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