/** 让当前帧停留一定时间 */
void FrameControl_Remain( FrameCtrlCtx *ctx )
{
unsigned int n_ms, lost_ms;
int64_t current_time;
if( ctx->state == FRAME_CTRL_STATE_QUIT ) {
return;
}
current_time = LCUI_GetTickCount();
n_ms = (int)(current_time - ctx->prev_frame_start_time);
if( n_ms > ctx->one_frame_remain_time ) {
goto normal_exit;
}
n_ms = ctx->one_frame_remain_time - n_ms;
if( n_ms < 1 ) {
goto normal_exit;
}
/** 进行睡眠，直到需要暂停为止 */
LCUISleeper_StartSleep( &ctx->wait_pause, n_ms );
/** 睡眠结束后，如果当前状态不为PAUSE，则说明睡眠不是因为要暂停而终止的 */
if( ctx->state != FRAME_CTRL_STATE_PAUSE ) {
goto normal_exit;
}
/** 需要暂停，进行睡眠，直到需要继续为止 */
lost_ms = LCUISleeper_StartSleep( &ctx->wait_continue, INT_MAX );
ctx->pause_time = lost_ms;
ctx->prev_frame_start_time += lost_ms;
return;
normal_exit:;
current_time = LCUI_GetTickCount();
if( current_time - ctx->prev_fps_update_time >= 1000 ) {
ctx->current_fps = ctx->temp_fps;
ctx->prev_fps_update_time = current_time;
ctx->temp_fps = 0;
}
ctx->prev_frame_start_time = current_time;
++ctx->temp_fps;
}
/* 从消息队列中取出一个消息 */
int Game_GetMsg( GameMsg *msg_buff )
{
GameMsg *p_msg;
Game_RecvMsg();
while( Queue_GetTotal(&game_msg_queue)<=0 ) {
LCUISleeper_StartSleep( &msg_sleeper, 1000 );
}
Queue_Lock( &game_msg_queue );
p_msg = (GameMsg*)Queue_Get( &game_msg_queue, 0 );
if( p_msg == NULL ) {
Queue_Unlock( &game_msg_queue );
return -1;
}
*msg_buff = *p_msg;
Queue_Delete( &game_msg_queue, 0 );
Queue_Unlock( &game_msg_queue );
return 0;
}
/** 定时器线程，用于处理列表中各个定时器 */
static void TimerThread( void *arg )
{
int i, n;
long int n_ms;
LCUI_Func func_data;
LCUI_Queue *timer_list;
timer_data *timer = NULL;
int64_t lost_ms;
timer_list = (LCUI_Queue*)arg;
func_data.arg[0] = NULL;
func_data.arg[1] = NULL;
while( !LCUI_Active() ) {
LCUI_MSleep(10);
}
while( timer_thread_active ) {
Queue_Lock( timer_list );
n = Queue_GetTotal( timer_list );
for(i=0; i<n; ++i) {
timer = (timer_data*)Queue_Get( timer_list , i);
if( !timer ) {
continue;
}
if( timer->state == STATE_RUN ) {
break;
}
}
Queue_Unlock( timer_list );
/* 没有要处理的定时器，停留一段时间再进行下次循环 */
if(i >= n || !timer ) {
LCUI_MSleep(10);
continue;
}
lost_ms = LCUI_GetTicks( timer->start_time );
/* 减去处于暂停状态的时长 */
lost_ms -= timer->pause_ms;
/* 若流失的时间未达到总定时时长 */
if( lost_ms < timer->total_ms ) {
Queue_Lock( timer_list );
n_ms = timer->total_ms - lost_ms;
/* 开始睡眠 */
LCUISleeper_StartSleep( &timer_sleeper, n_ms );
Queue_Unlock( timer_list );
lost_ms = LCUI_GetTicks( timer->start_time );
lost_ms -= timer->pause_ms;
if( lost_ms < timer->total_ms ) {
continue;
}
}
DEBUG_MSG("timer: %d, start_time: %I64dms, cur_time: %I64dms, cur_ms: %I64d, total_ms: %ld\n",
timer->id, timer->start_time, LCUI_GetTickCount(), timer->total_ms-lost_ms, timer->total_ms);
/* 准备任务数据 */
func_data.id = timer->app_id;
func_data.func = (CallBackFunc)timer->callback_func;
func_data.arg[0] = timer->arg;
func_data.destroy_arg[0] = FALSE;
/* 添加该任务至指定程序的任务队列，添加模式是覆盖 */
AppTasks_CustomAdd( ADD_MODE_REPLACE | AND_ARG_F, &func_data );
Queue_Lock( timer_list );
/* 若需要重复使用，则重置剩余等待时间 */
if( timer->reuse ) {
timer->start_time = LCUI_GetTickCount();
timer->pause_ms = 0;
TimerList_UpdateTimerPos( timer_list, timer );
} else { /* 否则，释放该定时器 */
LCUITimer_Free( timer->id );
}
Queue_Unlock( timer_list );
}
LCUIThread_Exit(NULL);
}
