int datacloud::myrequest(int col,int row,const unsigned char *mapfile,int hlod,const unsigned char *texfile,int tlod,const unsigned char *fogfile,databuf *hfield,databuf *texture,databuf *fogmap)
{
BOOLINT immediate=FALSE;
// catch file existence check
if (hfield==NULL && texture==NULL && fogmap==NULL)
{
if (!checkfile(mapfile,FALSE)) return(0);
if (!checkfile(texfile,TRUE)) return(0);
if (!checkfile(fogfile,FALSE)) return(0);
return(1);
}
// check for height fields that should be delivered immediately
if (mapfile!=NULL)
if (TERRAIN->getminitile()==NULL) immediate=TRUE;
else if (!TERRAIN->getminitile()->isloaded(col,row)) immediate=TRUE;
// check for texture maps that should be delivered immediately
if (texfile!=NULL)
if (TERRAIN->getminitile()==NULL) immediate=TRUE;
else if (TERRAIN->getminitile()->gettexid(col,row)==0) immediate=TRUE;
// check for request of texture map only
if (mapfile==NULL && texfile!=NULL && fogfile==NULL) immediate=TRUE;
// schedule job as immediate or deferred with hi prio
insertjob(col,row,mapfile,hlod,texfile,tlod,fogfile,immediate,FALSE);
// immediate data delivery
if (immediate) deliverdata(hfield,texture,fogmap,TRUE);
return(0);
}
// insert one job into the queue
void datacloud::insertjob(int col,int row,const unsigned char *mapfile,int hlod,const unsigned char *texfile,int tlod,const unsigned char *fogfile,BOOLINT immediate,BOOLINT loprio)
{
double time;
jobqueueelem *oldjob,*newjob;
// check for already existing job
oldjob=checkjob(col,row,mapfile,hlod,texfile,tlod,fogfile,immediate,loprio);
// reset access time
if (oldjob!=NULL)
{
time=gettime();
if (mapfile!=NULL) oldjob->hfield->access=time;
if (texfile!=NULL) oldjob->texture->access=time;
if (fogfile!=NULL) oldjob->fogmap->access=time;
return;
}
// create new job
newjob=new jobqueueelem;
newjob->col=col;
newjob->row=row;
// schedule height field
if (mapfile!=NULL) newjob->hfield=inserttile(mapfile,col,row,FALSE,immediate,loprio,hlod);
else newjob->hfield=NULL;
newjob->hlod=hlod;
// schedule texture map
if (texfile!=NULL) newjob->texture=inserttile(texfile,col,row,TRUE,immediate,loprio,tlod);
else newjob->texture=NULL;
newjob->tlod=tlod;
// schedule fog field
if (fogfile!=NULL) newjob->fogmap=inserttile(fogfile,col,row,FALSE,immediate,loprio,0);
else newjob->fogmap=NULL;
newjob->loprio=loprio;
// insert job into job queue
if (immediate) insertjob(NULL,newjob); // insert immediate job at head
else insertjob(JOBQUEUETAIL,newjob); // insert job at tail
}
// insert one job into the queue
void datacloud::insertjob(int col,int row,unsigned char *mapfile,int hlod,unsigned char *texfile,int tlod,unsigned char *fogfile,BOOLINT immediate,BOOLINT loprio)
{
// check for already existing job
if (checkjob(mapfile,texfile,fogfile,immediate,loprio)) return;
jobqueueelem *newjob=new jobqueueelem;
newjob->col=col;
newjob->row=row;
// schedule height field
if (mapfile!=NULL) newjob->hfield=inserttile(mapfile,col,row,FALSE,immediate,loprio);
else newjob->hfield=NULL;
newjob->hlod=hlod;
// schedule texture map
if (texfile!=NULL) newjob->texture=inserttile(texfile,col,row,TRUE,immediate,loprio);
else newjob->texture=NULL;
newjob->tlod=tlod;
// schedule fog field
if (fogfile!=NULL) newjob->fogmap=inserttile(fogfile,col,row,FALSE,immediate,loprio);
else newjob->fogmap=NULL;
newjob->loprio=loprio;
// insert immediate job at begin
if (immediate) insertjob(NULL,newjob);
// insert hi prio job before lo prio jobs
else if (!loprio)
{
jobqueueelem *job=JOBQUEUETAIL;
// scan past lo prio jobs in reverse order
while (job!=NULL)
{
if (!job->loprio) break;
job=job->prev;
}
// insert after last hi prio job
insertjob(job,newjob);
}
// insert lo prio job at end
else insertjob(JOBQUEUETAIL,newjob);
}
void datacloud::mypreload(int col,int row,const unsigned char *mapfile,int hlod,const unsigned char *texfile,int tlod,const unsigned char *fogfile)
{
// schedule job as deferred with lo prio
insertjob(col,row,mapfile,hlod,texfile,tlod,fogfile,FALSE,TRUE);
}
