/*
==============
SetPortalState
doors explicitly close off portals when shut
==============
*/
void idRenderWorldLocal::SetPortalState( qhandle_t portal, int blockTypes ) {
if ( portal == 0 ) {
return;
}
if ( portal < 1 || portal > numInterAreaPortals ) {
common->Error( "SetPortalState: bad portal number %i", portal );
}
int old = doublePortals[portal-1].blockingBits;
if ( old == blockTypes ) {
return;
}
doublePortals[portal-1].blockingBits = blockTypes;
// leave the connectedAreaGroup the same on one side,
// then flood fill from the other side with a new number for each changed attribute
for ( int i = 0 ; i < NUM_PORTAL_ATTRIBUTES ; i++ ) {
if ( ( old ^ blockTypes ) & ( 1 << i ) ) {
connectedAreaNum++;
FloodConnectedAreas( &portalAreas[doublePortals[portal-1].portals[1]->intoArea], i );
}
}
if ( session->writeDemo ) {
session->writeDemo->WriteInt( DS_RENDER );
session->writeDemo->WriteInt( DC_SET_PORTAL_STATE );
session->writeDemo->WriteInt( portal );
session->writeDemo->WriteInt( blockTypes );
}
}
/*
=============
FloodConnectedAreas
=============
*/
void idRenderWorldLocal::FloodConnectedAreas( portalArea_t *area, int portalAttributeIndex ) {
if ( area->connectedAreaNum[portalAttributeIndex] == connectedAreaNum ) {
return;
}
area->connectedAreaNum[portalAttributeIndex] = connectedAreaNum;
for ( portal_t *p = area->portals ; p ; p = p->next ) {
if ( !(p->doublePortal->blockingBits & (1<<portalAttributeIndex) ) ) {
FloodConnectedAreas( &portalAreas[p->intoArea], portalAttributeIndex );
}
}
}
/*
=====================
idRenderWorldLocal::ClearPortalStates
=====================
*/
void idRenderWorldLocal::ClearPortalStates() {
int i, j;
// all portals start off open
for ( i = 0 ; i < numInterAreaPortals ; i++ ) {
doublePortals[i].blockingBits = PS_BLOCK_NONE;
}
// flood fill all area connections
for ( i = 0 ; i < numPortalAreas ; i++ ) {
for ( j = 0 ; j < NUM_PORTAL_ATTRIBUTES ; j++ ) {
connectedAreaNum++;
FloodConnectedAreas( &portalAreas[i], j );
}
}
}
