Exemplos de WhoseLinkAmI em C++ (Cpp)

Exemplo n.º 1

//call this function to find out which area we fall into
//not necessarily the target area
//if it isn't the same, then a random encounter happened!
WMPAreaLink *WorldMap::GetEncounterLink(const ieResRef AreaName, bool &encounter) const
{
	if (!GotHereFrom) {
		return NULL;
	}
	unsigned int i;
	WMPAreaEntry *ae=GetArea( AreaName, i ); //target area
	if (!ae) {
		printMessage("WorldMap", "No such area: %s\n", LIGHT_RED, AreaName);
		return NULL;
	}
	std::list<WMPAreaLink*> walkpath;
	print("Gathering path information for: %s\n", AreaName);
	while (GotHereFrom[i]!=-1) {
		print("Adding path to %d\n", i);
		walkpath.push_back(area_links[GotHereFrom[i]]);
		i = WhoseLinkAmI(GotHereFrom[i]);
		if (i==(ieDword) -1) {
			print("Something has been screwed up here (incorrect path)!\n");
			abort();
		}
	}

	print("Walkpath size is: %d\n",(int) walkpath.size());
	if (!walkpath.size()) {
		return NULL;
	}
	std::list<WMPAreaLink*>::iterator p=walkpath.begin();
	WMPAreaLink *lastpath;
	encounter=false;
	do {
		lastpath = *p;
		if (lastpath->EncounterChance > (unsigned int) (rand()%100)) {
			encounter=true;
			break;
		}
		p++;
	}
	while(p!=walkpath.end() );
	return lastpath;
}

Exemplo n.º 2

Arquivo: WorldMap.cpp Projeto: a2920074/gemrb

//adds a temporary AreaEntry to the world map
//this entry has two links for each direction, leading to the two areas
//we were travelling between when using the supplied link
void WorldMap::SetEncounterArea(const ieResRef area, WMPAreaLink *link) {
	unsigned int i;
	if (GetArea(area, i)) {
		return;
	}

	//determine the area the link came from
	unsigned int j, cnt = GetLinkCount();
	for (j = 0; j < cnt; ++j) {
		if (link == area_links[j]) {
			break;
		}
	}

	i = WhoseLinkAmI(j);
	if (i == (unsigned int) -1) {
		Log(ERROR, "WorldMap", "Could not add encounter area");
		return;
	}

	WMPAreaEntry *ae = GetNewAreaEntry();
	ae->SetAreaStatus(WMP_ENTRY_VISIBLE|WMP_ENTRY_ACCESSIBLE|WMP_ENTRY_VISITED, BM_SET);
	CopyResRef(ae->AreaName, area);
	CopyResRef(ae->AreaResRef, area);
	ae->LocCaptionName = -1;
	ae->LocTooltipName = -1;
	ae->IconSeq = -1;
	CopyResRef(ae->LoadScreenResRef, "");

	WMPAreaEntry *src = area_entries[i];
	WMPAreaEntry *dest = area_entries[link->AreaIndex];
	ae->X = src->X + (int) (dest->X - src->X) / 2;
	ae->Y = src->Y + (int) (dest->Y - src->Y) / 2;

	//setup the area links
	WMPAreaLink *ldest = new WMPAreaLink();
	memcpy(ldest, link, sizeof(WMPAreaLink));
	ldest->DistanceScale /= 2;
	ldest->EncounterChance = 0;

	link = GetLink(dest->AreaName, src->AreaName);
	if (!link) {
		Log(ERROR, "WorldMap", "Could not find link from %s to %s",
			dest->AreaName, src->AreaName);
		delete ae;
		delete ldest;
		return;
	}

	WMPAreaLink *lsrc = new WMPAreaLink();
	memcpy(lsrc, link, sizeof(WMPAreaLink));
	lsrc->DistanceScale /= 2;
	lsrc->EncounterChance = 0;

	unsigned int idx = area_links.size();
	AddAreaLink(ldest);
	AddAreaLink(lsrc);

	for (i = 0; i < 4; ++i) {
		ae->AreaLinksCount[i] = 2;
		ae->AreaLinksIndex[i] = idx;
	}
	
	encounterArea = area_entries.size();
	AddAreaEntry(ae);
}