Function renderDrawMapView

source/core/automap.cpp:500–587

//---------------------------------------------------------------------------

static void renderDrawMapView(const DVector2& cpos, const DVector2& cangvect, const DVector2& xydim)
{
	TArray<FVector4> vertices;
	TArray<DCoreActor*> floorsprites;

	for (int i = (int)sector.Size() - 1; i >= 0; i--)
	{
		auto sect = &sector[i];
		if (!gFullMap && !show2dsector[i]) continue;

		//Collect floor sprites to draw
		TSectIterator<DCoreActor> it(sect);
		while (auto act = it.Next())
		{
			if (act->spr.cstat & CSTAT_SPRITE_INVISIBLE)
				continue;

			if (act->spr.cstat & CSTAT_SPRITE_ALIGNMENT_FLOOR)	// floor and slope sprites
			{
				if ((act->spr.cstat & (CSTAT_SPRITE_ONE_SIDE | CSTAT_SPRITE_YFLIP)) == (CSTAT_SPRITE_ONE_SIDE | CSTAT_SPRITE_YFLIP))
					continue; // upside down
				floorsprites.Push(act);
			}
		}

		if (sect->floorstat & CSTAT_SECTOR_SKY) continue;

		auto flortex = sect->floortexture;
		if (!flortex.isValid()) continue;

		auto translation = TRANSLATION(Translation_Remap + curbasepal, sector[i].floorpal);
		PalEntry light = shadeToLight(sector[i].floorshade);

		for (auto section : sectionsPerSector[i])
		{
			TArray<int>* indices;
			auto mesh = sectionGeometry.get(&sections[section], 0, { 0.f, 0.f }, &indices);
			vertices.Resize(mesh->vertices.Size());
			for (unsigned j = 0; j < mesh->vertices.Size(); j++)
			{
				auto v = OutAutomapVector(DVector2(mesh->vertices[j].X - cpos.X, -mesh->vertices[j].Y - cpos.Y), cangvect, gZoom, xydim);
				vertices[j] = { float(v.X), float(v.Y), mesh->texcoords[j].X, mesh->texcoords[j].Y };
			}

			twod->AddPoly(TexMan.GetGameTexture(flortex, true), vertices.Data(), vertices.Size(), (unsigned*)indices->Data(), indices->Size(), translation, light,
				LegacyRenderStyles[STYLE_Translucent], &viewport3d);
		}
	}
	qsort(floorsprites.Data(), floorsprites.Size(), sizeof(DCoreActor*), [](const void* a, const void* b)
		{
			auto A = *(DCoreActor**)a;
			auto B = *(DCoreActor**)b;
			if (A->spr.pos.Z < B->spr.pos.Z) return 1;
			if (A->spr.pos.Z > B->spr.pos.Z) return -1;
			return A->time - B->time; // ensures stable sort.
		});

	vertices.Resize(4);